228 posts

26 September

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

08:57
FFMPEG Multiple task for converting video to image sequence for MacOS - Gabriel Moraes Aquino Newest 'ffmpeg' Questions - Stack Overflow

I need help to make multiple task of that on MacOS: ffmpeg -i file.mp4 -r 0.1 output_%04d.jpg I have basically 200 video files to do that action and I want to create a single code that I can send to ffmpeg at once. I have tried with & in the end but it didn't work. please help! Gabriel
06:44
Using FFMPEG, how do we add subtitles in the black bar area or under the video? - DunceDancer Newest 'ffmpeg' Questions - Stack Overflow

I followed these steps: Added the black bars vf "scale=1920:1080:force_original_aspect_ratio=decrease,pad=1920:1080:(ow-iw)/2:(oh-ih)/2,setsar=1" Source:How to add black borders to video Added the subtitles ("burned" it into the video) ffmpeg -i "imput.mp4" -lavfi "subtitles=subtitles.srt:force_style='Alignment=0,OutlineColour=&H100000000,BorderStyle=3,Outline=1,Shadow=0,Fontsize=18,MarginL=5,MarginV=25'" -crf 1 -c:a copy "output.mp4" Source: ffmpeg subtitles alignment and position Now I am stuck as to how to place the subtitles (...) -- Screenshot of the Problem
05:43
Cut a video in between key frames without re-encoding the full video using ffpmeg? - bguiz Newest 'ffmpeg' Questions - Stack Overflow

I would like to cut a video at the beginning at any particular timestamp, and it need to be precise, so the nearest key frame is not good enough. Also, these videos are rather long - an hour or longer - so I would like to avoid re-encoding this altogether if possible, or otherwise only re-encode a minimal fraction of the total duration. Thus, would like to maximise the use of -vcodec copy. How can I accomplish this using ffmpeg? NOTE: See scenario, and my own rough idea for a possible solution below. Scenario: Original video Length of (...)
03:54
Use ffmpeg on windows to convert a set of png images to a set of webp images - januw a Newest 'ffmpeg' Questions - Stack Overflow

I tried to use this command to convert all .png in the images directory to .webp, but it did not achieve the expected result. Is there any other way to achieve this function? images> (for %i in (*.png) do ffmpeg -i %i %2d.webp)
03:14
FFMPEG Multiple task for converting video to image sequence - Gabriel Moraes Aquino Newest 'ffmpeg' Questions - Stack Overflow

I need help to make multiple task of that: ffmpeg -i file.mp4 -r 0.1 output_%04d.jpg I have basically 200 video files to do that action and I want to create a single code that I can send to ffmpeg at once. I have tried with & in the end but it didn't work. please help! Gabriel
01:12
I am using ffmpeg java library to convert captured screenshots to video. Video output is blurry - dark prince Newest 'ffmpeg' Questions - Stack Overflow

I am using ffmpeg java library to convert captured screenshots to video. Video which is generated as output is blurry. I am using bit rate as 9000, frames per sec as 25 and video size as that of desktop screen size. Any suggestions on how to solve this issue. P.S. I cannot use ffmpeg.exe and command line due to certain restrictions and hence I am opting for ffmpeg java library. Any suggestions on the issue or suggestions on any better approach will be helpful. Thanks in advance. ScreenRecorder.java import static (...) -- https://github.com/csanuragjain/recorder/tree/master/ScreenRecorder
00:48
Colors messed up when converting an image sequence to video using ffmpeg - Form Newest 'ffmpeg' Questions - Stack Overflow

I'm generating a video from a PNG sequence using ffmpeg but the resulting video has wrong colors compared to the source files. Getting the correct colors is important because we're using our video assets side-by-side with image assets and the colors must match perfectly (or at least, be as visually similar as possible so as not to be jarring). Our PNG input files are in the sRGB color profile. Here's the command we're running: ffmpeg -r 30 -f image2 -s 1920x1080 -i bg_analyse_%05d.png -vcodec libx264 -crf 25 -pix_fmt yuv420p output5.mp4 And (...) --
00:36
End FFMPEG execution when RTMP input is closed - tidpe Newest 'ffmpeg' Questions - Stack Overflow

I have an RTMP arut server inside which I call a python script to run an FFMPEG command and create HLS packaging. Problem is that when I stop the RTMP stream, FFMPEG still run processes in background. FFMPEG string is like this: ffmpeg -re -v verbose -i rtmp://localhost:1935/live/testlive -rw_timeout 500 -http_persistent 1 -method PUT -http_user_agent test -f hls -hls_list_size 5 -hls_flags discont_start+delete_segments -vf "scale=426:trunc(ow/a/2)*2" -c:a libfdk_aac -ar 48000 -c:v h264 -profile:v main -crf 24 -sc_threshold 0 -g 48 -keyint_min 48 -hls_time 4 (...)

25 September

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

23:39
Is encoding and streaming images into a video in under 30 ms realistic at all? - Hamza Ghizaoui Newest 'ffmpeg' Questions - Stack Overflow

So, a client camera would be sending 20 FPS 4000 x 3000 pixel images per second. The client want it to be streamed in under 30 ms upon receiving via a web-browser with a 1920 x 1080 resolution . Here is how we approached the problem : Image received => openCV resizes it to 1920 x 1080 => image piped to FFMPEG => ffmpeg encode it to H.264 using Nvec hardware acceleration => FFMPEG sends it via UDP-packets to a Node.js server => the Node.js server serves it to client (using React as a front-end there) The encoding time requires circa 12 ms using my best options while (...)
23:34
I received connection refused error while trying to stream live video through RTMP with FFMPEG - Femzy Newest 'ffmpeg' Questions - Stack Overflow

I am working on a nodeJs app that can send camera stream to third party plartform i.e Facebook and Youtube using the RTMP protoco;.. It works well on my localhost but once i deploy to the server, it only give me errors. The error I get is below on this content.. Here is my codes server.js const child_process = require('child_process'); // To be used later for running FFmpeg const express = require('express'); const http = require('http'); const WebSocketServer = require('ws').Server; const app = (...)
21:25
Creating text overlay like tiktok on a video in flutter [closed] - Sarthak Singhal Newest 'ffmpeg' Questions - Stack Overflow

I am trying to create an app in which user can add text on a video like the given image. The user should be able to move the text container anywhere on the screen, resize it, and rotate it also. When this is done, the text widget should be merged on the video. For now I have used Stack to add elements and let user play with them. I want to know how to merge this text along with the background color with the video and that too for a specific time (...) --

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

23:32
avcodec/mpeg12dec: remove inter block calls in IPU decoder - Paul B Mahol git.videolan.org Git - ffmpeg.git/rss log

avcodec/mpeg12dec: remove inter block calls in IPU decoder This is intra only codec. [DH] libavcodec/mpeg12dec.c

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

22:35
How to extract motion vectors from h264 without a full decode on the CPU - Adrian May Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to use my nose as a pointing device. The plan is to encode the video stream from a webcam pointed at my face as h264 or the like, get the motion vectors, cook the numbers a bit and chuck them into /dev/uinput to make the mouse pointer move about. The uinput bit was easy. This has to work with zero discernable latency. This, for instance: #!/bin/bash [ -p pipe.mkv ] || mkfifo pipe.mkv ffmpeg -y -rtbufsize 1M -s 640x360 -vcodec mjpeg -i /dev/video0 -c h264_nvenc pipe.mkv & ffplay -flags2 +export_mvs -vf codecview=mv=pf+bf+bb (...)

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

22:05
avcodec/mpeg12dec: add support for MPEG1 blocks in IPU codec - Paul B Mahol git.videolan.org Git - ffmpeg.git/rss log

avcodec/mpeg12dec: add support for MPEG1 blocks in IPU codec [DH] libavcodec/mpeg12dec.c

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

20:11
Merge two audio tracks in a video file into one track using FFmpeg [duplicate] - Alsors Newest 'ffmpeg' Questions - Stack Overflow

Okay so I have a video file with a video track and two audio tracks. What FFmpeg command would I use to copy the video track over and merge the two audio tracks into one? I would like the audio tracks to remain at the same quality just merged.
20:00
Continuously rotate image centered on background - Tudor-Radu Barbu Newest 'ffmpeg' Questions - Stack Overflow

Is it possible to continuously rotate an image or series of images and output as a video with ffmpeg? Rotating image should be centered over a background. See example video. -- example video
19:43
Problems with ffmpeg input filenames when using bash script - Nick Styles Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to use ffmpeg to convert some .m4a audio files to .mp3, and have come across something that has me stumped. I'd like to create the .mp3 in the same location and with the same filename as the .m4a, and so I'm using a combination of find/exec and a bash script to do this, as follows: find /Volumes/Untitled/ -name '[!.]*' -name '*.m4a' -exec ./m4atomp3.sh \\; where m4atomp3.sh looks like: #!/usr/bin/env bash || echo "$1 not found" ; exit 1 ; P="$1" echo "$P is the full filename" filename=$P%.* echo (...)

Newest 'libx264' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/libx264

18:23
FFmpeg : Segment muxer does not work for AVC-MXF - Mitra M Newest 'libx264' Questions - Stack Overflow

I'm trying to save input stream to separate files every 60 seconds with the following command: ffmpeg -i Input -vcodec libx264 -s 1920x1080 -pix_fmt yuv422p10le -aspect 16:9 -acodec pcm_s24le -ac 2 -ar 48000 -f segment -strftime 1 -segment_time 60 -y "e://o1/%H-%M-%S.mxf" but getting this errors: [mxf ⓐ 000002111453c640] h264 profile not supported0:00.62 bitrate=N/A speed=1.23x [mxf ⓐ 000002111453c640] could not get h264 profile av_interleaved_write_frame(): Operation not permitted Note: The following 3 commands work without any (...)

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

17:51
OpenCV FFMPEG RTSP Camera Feed Errors - trn2020 Newest 'ffmpeg' Questions - Stack Overflow

I'm getting these errors at random times when saving frames from an rtsp camera feed. The errors happen at different times, usually after 100-200 images have been saved, and the errors themselves are not always exactly the same. They cause the images that are saved at the time of the error to be distorted either to the point of being completely grey or contain distorted pixels. #Frame_142 - [hevc ⓐ 0c3bf800] The cu_qp_delta 29 is outside the valid range [-26, 25]. #Frame_406 - [hevc ⓐ 0b6bdb80] Could not find ref with POC 41 I've tried implementing the code in (...)
17:38
unable to download a file using youtube_dl - perkymaster Newest 'ffmpeg' Questions - Stack Overflow

I am trying to play music from a bot using ffmpeg and youtube_dl by making using of discord.py but it seems that I am unable to download the file Here is my code, voice = get(client.voice_clients, guild=ctx.guild) ydl_opts= 'format': 'bestaudio/best', 'noplaylist': 'True', 'postprocessors': [ 'key': 'FFmpegExtractAudio', 'preferredcodec':'mp3', 'prefferedquality':'192', ], with youtube_dl.YoutubeDL(ydl_opts) as (...)
11:08
Show error when build win32 version Ffmpeg in windows10,How solve it? [duplicate] - lslboy Newest 'ffmpeg' Questions - Stack Overflow

I build a win32 version FFmpeg for get the .dll and .lib file in windows10 follow the https://trac.ffmpeg.org/wiki/CompilationGuide/WinRT document, I executed the command ../../../configure \\ --toolchain=msvc \\ --disable-programs \\ --disable-d3d11va \\ --disable-dxva2 \\ --arch=x86 \\ --enable-shared \\ --enable-cross-compile \\ --target-os=win32 \\ --extra-cflags="-MD -DWINAPI_FAMILY=WINAPI_FAMILY_APP -D_WIN32_WINNT=0x0A00" \\ --extra-ldflags="-APPCONTAINER WindowsApp.lib" \\ --prefix=../../../Build/Windows10/x86 everything works well, (...) -- https://trac.ffmpeg.org/wiki/CompilationGuide/WinRT
16:28
Extract image of every frame of a video using react-native-ffmpeg - EdG Newest 'ffmpeg' Questions - Stack Overflow

I have looked all over the internet to get a way to extract image of everyframe of a video using react-native-ffmpeg. I am making a mobile app and I want to show all per frame images on the video timeline. I want to do this natively on mobile so that I can utilise hardware power of mobile. That is the reason I am looking for react-native-ffmpeg kind of library. Am I in the right direction? This npmjs.com/package/react-native-ffmpeg is what I am trying to use. I need to know the command to do the job. (...) -- npmjs.com/package/react-native-ffmpeg
15:46
Problem with Getting Output with Accents When Using PHP exec Command with ffprobe - user5919866 Newest 'ffmpeg' Questions - Stack Overflow

I am retrieving the output of ffprobe with PHP exec command to get information from mp3 files. The problem is that if there is any text in the output containing accents or apostrophes, then I don't get those displayed. I am running PHP 7.3.19 on Debian 10. The output locale -a from the commandline is: C C.UTF-8 en_US.utf8 POSIX I have tried several things in my PHP script such as: $cmd = 'LANG=\\"en_US.UTF8\\" ffprobe -loglevel error -show_entries format=duration:format_tags -of json "' . $FinalFilenamePath . '"'; exec($cmd, (...)

Revisions : SPIP http://core.spip.org/projects/spip/activity

14:39
Anomalie #4556 (Nouveau): Description du repo - jluc - Revisions : SPIP

Sur https://git.spip.net/spip/spip , le descriptif du projet SPIP est obsolète : `Dépôt officiel du core SPIP * Copie possible par svn sur svn://trac.rezo.net/spip * Les svn:externals sont présent dans https://git.spip.net/SPIP/[nom du plugin dist]`.

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

13:21
Discord.js Music Bot ffmpeg not found? - cccmdm Newest 'ffmpeg' Questions - Stack Overflow

I just started learning javascript with node.js and I am attempting to create a music bot, I've set up the command handler and everything, however, I keep getting this error when I try to run the play command Error: FFmpeg/avconv not found! at Function.getInfo (C:\\Users\\johnd\\OneDrive\\Desktop\\discordBot\\node_modules\\prism-media\\src\\core\\FFmpeg.js:130:11) at Function.create (C:\\Users\\johnd\\OneDrive\\Desktop\\discordBot\\node_modules\\prism-media\\src\\core\\FFmpeg.js:143:38) at new FFmpeg (...) -- https://imgur.com/a/EFM1G6s
15:02
Laravel FFMpeg - FFMpeg cannot edit existing files in-place - wlaskovic Newest 'ffmpeg' Questions - Stack Overflow

After I wanted to upload a video in the queue was returned a failed job. [2020-09-25 13:24:25][125] Processing: App\\Jobs\\ConvertVideoForStreaming [2020-09-25 13:24:26][125] Failed: App\\Jobs\\ConvertVideoForStreaming So I've took from the DB failed_jobs table the response and run the following: C:\\ffmpeg\\bin\\ffmpeg.exe -y -i "C:\\wamp64\\www\\laravel-stream\\storage\\app/public\\WF3UL8fJTSE7BMxa.mp4" -threads 12 -vcodec libx264 -acodec libmp3lame -b:v 500k -refs 6 -coder 1 -sc_threshold 40 -flags +loop -me_range 16 -subq 7 -i_qfactor 0.71 -qcomp 0.6 -qdiff (...)
13:42
How to extract jpeg/png images from RTSP stream without encoding the whole stream? - Rune Aspvik Newest 'ffmpeg' Questions - Stack Overflow

I am building a video system in Node.js based on IP cameras. They all output RTSP streams and MJPEG streams. However the Mjpeg is unreliable for web browser display snapshots and so I want to create my own snapshots. I'm using FFMPEG to record the RTSP stream so that's been my tool. So far I've tried two options: FFMPEG with two outputs: ffmpeg -i rtsp://.... -c copy output.ts -r 1/5 -s 640x360 -f image2 -update 1 -y snap.jpg This works really well, but it's using a lot of resources since even though I only need a low res image every 5 sec, it (...)
12:14
FFMPEG - local video to UDP streaming to OpenCV - video quality degraded - user3925023 Newest 'ffmpeg' Questions - Stack Overflow

my goal is to re-stream local video content / desktop screencasting, to an UDP flow that I need to process on a Python script. Here is the FFMPEG script that I'm using: ffmpeg -re -i C:\\Users\\test\\Downloads\\out.ts -strict -2 -c:v copy -an -preset slower -tune stillimage -b 11200k -f rawvideo udp://127.0.0.1:5000 And here is the simple Python script supposed to read the stream flow: import cv2 cap = cv2.VideoCapture('udp://127.0.0.1:5000',cv2.CAP_FFMPEG) if not cap.isOpened(): print('VideoCapture not (...) --
11:54
I am merging two videos using ffmpeg concat filter. First video has no audio and 2nd video has audio. How do I do it? [closed] - Akashnil Roy Newest 'ffmpeg' Questions - Stack Overflow

When I merge it I have an output video file which has the audio of the 2nd video file missing. I am using : ffmpeg -f concat -safe 0 -i -c copy The txt file contains the name of the 2 files. I have looked through the ffmpeg documentation. I am new to this and can't understand where lies the problem.

Revisions : SPIP http://core.spip.org/projects/spip/activity

10:58
Evolution #4468: Unification des CSS pour les boutons et les icônes Revisions : SPIP

Et j'ai réessayé avec un spip nu, sans aucun plugin supplémentaire : pareil

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

11:05
ffmpeg throwing System.AccessViolationException - shmit Newest 'ffmpeg' Questions - Stack Overflow

I am using ffmpeg to extract frames and iterate over them. The codes iterates correctly over few frames and then then randomly throws error "System.AccessViolationException: 'Attempted to read or write protected memory. This is often an indication that other memory is corrupt.' Any suggestions on how to resolve it? System details and screenshot below: System Details: OS: Windows TargetFramework: .netCore3.1 Nugets: FFMediaToolkit v3.0.0 and SixLabors.ImageSharp v1.0.0 Shared dlls copied from: https://ffmpeg.zeranoe.com/builds/ for version (...) -- https://ffmpeg.zeranoe.com/builds/,
10:53
C# WinForms, play video using the FFmpeg library - Damn Vegetables Newest 'ffmpeg' Questions - Stack Overflow

According to web search results, FFmpeg.AutoGen provides video/audio frames with timing data, and I could use them to render the way I want. But I cannot find a simple example for playing a video file on a WinForms window, using FFmpeg. In the example file, I can see code for initialisation and decoding video frames. How to play those frames smoothly on WinForms? Should I use some sort of DirectX library? -- In the example file
10:33
Using FFmpeg AutoGen save to bitmap works on Windows but not on Linux - Chris Newest 'ffmpeg' Questions - Stack Overflow

I'm using FFmpeg.AutoGen to decrypt video and save the frames as bitmaps. Code is using dotnet core and I'd like to get it working for both Windows and Linux. The code is similar to the example provided: https://github.com/Ruslan-B/FFmpeg.AutoGen/blob/db9bcd4b9dfad5d117ffd71fe1a2d073e96a3520/FFmpeg.AutoGen.Example/Program.cs AVFrame convertedFrame = this.converter.Convert(frame); Bitmap image = new Bitmap(convertedFrame.width, convertedFrame.height, convertedFrame.linesize[0], PixelFormat.Format24bppRgb, (IntPtr)convertedFrame.data[0]); When saving the (...) -- https://github.com/Ruslan-B/FFmpeg.AutoGen/blob/db9bcd4b9dfad5d117ffd71fe1a2d073e96a3520/FFmpeg.AutoGen.Example/Program.cs
10:07
Extract video or audio from frame index ffmpeg [duplicate] - DustinPham Newest 'ffmpeg' Questions - Stack Overflow

I have a list of frames index, for example: [1,5,6,7,100,106,1100]. How I extract a video / audio from source video that only includes the above frames using ffmpeg?
10:07
(FFmpeg) How to extract vocal from a song? - tasy5kg Newest 'ffmpeg' Questions - Stack Overflow

As we all know, we can use FFmpeg to remove vocal from a song: $ ffmpeg -i song.mp3 -af pan="stereo|c0=c0|c1=-1*c1" -ac 1 karaoke.mp3 Then, how to use FFmpeg to do the opposite thing: extract vocal from a song?
09:40
ffmpeg - audio is 500ms behind video in screen recording - Riz Newest 'ffmpeg' Questions - Stack Overflow

I am trying to record my screen along with the audio using ffmpeg 4.3. But in the final output, my audio is around 500ms to 1sec behind the video. How this can be fixed? Here is the command I am using on Windows 10 machine: ffmpeg.exe -threads 4 -rtbufsize 1024m -f dshow -i audio="Microphone (Realtek Audio)" -f gdigrab -offset_x 0 -offset_y 0 -video_size 1920x1080 -framerate 30 -probesize 32 -i desktop -pix_fmt yuv420p -c:v libx264 -crf 28 -preset ultrafast -tune zerolatency -movflags +faststart (...)
06:53
FFMPEG - how to transcode input stream while cutting off first few seconds of video and audio - purplepear24 Newest 'ffmpeg' Questions - Stack Overflow

I am using ffmpeg to transcode a screen-record (x11) input stream to MP4. I would like to cut off the first ~10 seconds of the stream, which is just a blank screen (this is intentional). I understand how to trim video with ffmpeg when converting from mp4 to another mp4, but i can't find any working solution for processing an input stream while accounting for delay and audio/video syncing. Here is my current code: const spawn = require('child_process'); const S3Uploader = require('./utils/upload'); const MEETING_URL = (...)
06:40
ffmpeg - how to pass all streams audio/tmcd, etc from input->output unchanged - Selene Newest 'ffmpeg' Questions - Stack Overflow

Please help me, with hopefully specific ffmpeg arguments to include in my video encoding. My work is only related to video stream, so this is the only one I'm changing. I receive a .mov file(s) that have already been pre-compiled for a specific broadcaster, some of those selfcontained videos have 4 streams (1 video, 2 audio, and some other timecode stream). Others have up to 17 streams: 1-video, 15-audio streams and the final one is unsupported tmcd. My process pipeline includes only re-encoding/re-processing video stream, and everything else I need to pass along to the (...)
06:06
Create different qaulities for my manifest with only mp4box - Ted Bed Newest 'ffmpeg' Questions - Stack Overflow

I asked a question on slack on why the quality and bitrate of my dash video wasn't changing and I got this response: You only have one quality in your manifest. there is no way for the player to choose a different one So how can I create different "qualities"? I have a mp4box command like: MP4Box -dash 2000 -profile dashavc264:live -bs-switching multi -url-template whatever.mp4#trackID=1:id=vid0:role=vid0 whatever.mp4#trackID=2:id=aud0:role=aud0 -out whatever.mpd Would it be possible to create different "qualities" with only mp4box or would I have to create (...)
06:03
FFMPEG - Encode a .wav file to G711 - aebner Newest 'ffmpeg' Questions - Stack Overflow

My question is the following: how to encode a .wav file to G.711/PCM A-law? I tried to edit this example file, but I got an EINVAL error when tried to call av_frame_get_buffer(frame, 0) with frame->nb_samples = c->frame_size which is 0 (I think this is the problem) because of pcm.c:37 (at least I think because of it). So with which parameters allocate an audio data buffer by myself if av_frame_get_buffer() doesn't do this for me and how to use it? Thanks for reply! EDIT: My code: #include #include #include #include #include (...) -- this example file, pcm.c:37
05:17
AWS lambda layer call says opt/ffmpeg is not a directory - Mayowa Daniel Newest 'ffmpeg' Questions - Stack Overflow

I followed this tutorial for making ffmpeg a lambda layer https://www.serverless.com/blog/publish-aws-lambda-layers-serverless-framework I ran ls in my directory with spawnsync and the opt directory was empty and so ffmpeg didn't fire. Any pointers on what I might be doing wrong? I'm using node.js12.x as my runtime with the serverless framework. -- https://www.serverless.com/blog/publish-aws-lambda-layers-serverless-framework
04:56
ffmpeg compile fail with unknown problem (for android) - Rocky Newest 'ffmpeg' Questions - Stack Overflow

FFmpeg version : latest version download from ffmpeg.org Compile environment : window 10 with mingw msys NDK : r21b I want to compile FFmpeg .a file to one 'libffmpeg.so'. I get an error message but I don’t know the reason. Error message is clear but I can't find where is -lgcc_real or how to get it. following message is my error message. d:\\android-ndk-r21b\\toolchains\\llvm\\prebuilt\\windows-x86_64\\bin\\aarch64-linux-android-ld.exe: cannot find -lgcc_real following code is my build (...)
04:26
How to install libavcodec and libavutil from its source in linux - Necktwi Newest 'ffmpeg' Questions - Stack Overflow

FFMPEG is providing libavutil and libavcodec libraries. While compiling and installing ffmpeg as described at https://trac.ffmpeg.org/wiki/CompilationGuide/Ubuntu I can find libavcodec and libavutil folders in the ffmpeg source folder. I want to install these libraries to use them in my c++ programs. But there are no Makefiles in these folders. How can I install them? -- https://trac.ffmpeg.org/wiki/CompilationGuide/Ubuntu
00:23
How can I extract a good quality JPEG image from a video file with ffmpeg? - Daniel Gartmann Newest 'ffmpeg' Questions - Stack Overflow

Currently I am using this command to extract the images: ffmpeg -i input.mp4 output_%03d.jpeg But how can I improve the JPEG image quality?
00:05
ffmpeg quality conversion options (video compression) - Jason Hunter Newest 'ffmpeg' Questions - Stack Overflow

Can you provide a link, or an explanation, to the -q:v 1 argument that deals with video/image quality, and compression, in ffmpeg. Let me explain... for f in * do extension="$f##*." filename="$f%.*" ffmpeg -i "$f" -q:v 1 "$filename"_lq."$extension" rm -f "$f" done The ffmpeg for loop above compresses all images and videos in your working directory, it basically lowers the quality which results in smaller file sizes (the desired outcome). I'm most interested in the -q:v 1 argument of this for loop. The 1 in the -q:v 1 argument is (...) -- the official documentation

24 September

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

22:20
avcodec/sonic: Check channels before deallocating - Michael Niedermayer git.videolan.org Git - ffmpeg.git/rss log

avcodec/sonic: Check channels before deallocating Fixes: heap-buffer-overflow Fixes: 25744/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SONIC_fuzzer-5172961169113088 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Andreas Rheinhardt <andreas.rheinhardtⓐgmail.com> Signed-off-by: Michael Niedermayer <michaelⓐniedermayer.cc> [DH] libavcodec/sonic.c
11:03
avcodec/mobiclip: Move quantizer check into setup_qtables() - Michael Niedermayer git.videolan.org Git - ffmpeg.git/rss log

avcodec/mobiclip: Move quantizer check into setup_qtables() Fixes: shift exponent -2 is negative Fixes: 25683/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MOBICLIP_fuzzer-6434808492982272 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Paul B Mahol <onemdaⓐgmail.com> Signed-off-by: Michael Niedermayer <michaelⓐniedermayer.cc> [DH] libavcodec/mobiclip.c

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

23:20
ffmpeg - DF vs NDF (Drop Frames) vs (Non Drop Frames), how to simply pass input timecode to output - Selene Newest 'ffmpeg' Questions - Stack Overflow

Please help with this issue. The broadcaster just rejected my submitted video because their validation tool threw this kind of error: was configured as "Non drop Frame". "Drop Frame" expected. I'm only processing video, and I expect the audio to just be copied from input to output. Running and comparing input with output using ffprobe shows difference in timecode: Metadata: major_brand : qt minor_version : 537199360 compatible_brands: qt creation_time : 2020-02-29T22:07:42.000000Z Duration: 00:00:20.05, start: 0.000000, bitrate: (...)
21:32
ffmpeg afade not being applied to atrim - Red Newest 'ffmpeg' Questions - Stack Overflow

I used ffmpeg command line like this: ffmpeg -i test.mp3 -filter_complex "atrim=2:duration=6;afade=t=in:st=0:d=2" -y -vn output.mp3 Get error: Cannot find a matching stream for unlabeled input pad 0 on filter Parsed_afade_1 Why does output.mp3 have no fade in?
20:40
Comparing PSNR of two videos, possibly with ffmpeg? - UnixNerd Newest 'ffmpeg' Questions - Stack Overflow

I would like to compare a large number of videos to a good reference video in order to find videos with poor quality. I want to do this in a batch mode by calling a command line utility, I'm already using ffmpeg in this manner to grab video frames. ffmpg will give me a PSNR value to compare the input and output videos if I transcode a video. I was under the impression I could use something like this to compare two separate videos but can't find a way to do it. Would I be better grabbing a single frame from each video and comparing those somehow? PSNR may not (...)
19:45
Video Overlay not returning to black once video stopped - Matt Nelson Newest 'ffmpeg' Questions - Stack Overflow

I am combining multiple videos from a webrtc call and aligning the "user-terminal" videos to the left, and the "user-visitor" videos to the right. As the visitor feed can start and strop, they have multiple videos so I'm offsetting them by the timestamp. This is working, however crazy it looks! The one last issue I have is that when the first visitor video stop on the right, it shows the last frame of that video until the next video starts on the left. Can I have it return o the black background? Here is the command passed to ffmpeg: ffmpeg -y -i (...)
19:02
How can I use ffmpeg to stream over http - user3754828 Newest 'ffmpeg' Questions - Stack Overflow

I am using the follow commands to stream to my localhost ffmpeg -i b.mp4 -r 60 -bufsize 1024k -vcode libtheora -qscale:v 1 -f ogg "udp://ⓐ127.0.0.1/video.ogg" ffmpeg -i b.mp4 -r 60 -bufsize 1024k -vcode libtheora -qscale:v 1 -f ogg "http://127.0.0.1/video.ogg" The both work very well, at least do not show any errors, but when I try play such http stream does not, it gave me error "not found" Can somebody help me on it? I am complety lost in this issue...also when I try include some port, for example ffmpeg -i b.mp4 -r 60 -bufsize 1024k -vcode (...)
17:27
FFMPEG - Edit encode_audio.c to be able to encode a .wav file to G711 - aebner Newest 'ffmpeg' Questions - Stack Overflow

My question is the following: how to edit this example file to be able to encode a .wav file to PCM A-law? I tried it and I got an EINVAL error when tried to call av_frame_get_buffer(frame, 0) with frame->nb_samples = c->frame_size which is 0 (I think this is the problem) because of pcm.c:37 (at least I think because of it). So with which parameters allocate an audio data buffer by myself if av_frame_get_buffer() doesn't do this for me and how to use it? Thanks for reply! EDIT: My code: #include #include #include #include #include (...) -- this example file, pcm.c:37
17:16
Batch Compress Select Image and Video Types in a Folder with ffmpeg - Jason Hunter Newest 'ffmpeg' Questions - Stack Overflow

for f in * do extension="$f##*." filename="$f%.*" ffmpeg -i "$f" -q:v 1 "$filename"_lq."$extension" rm -f "$f" done How do I use the known working code shown above to do two things simultaneously? Compress all jpg files in the working directory, utilizing ffmpeg's -q:v 1 argument Compress all mp4 files in the working directory, utilizing ffmpeg's -crf 23 argument I'm using Ubuntu Linux 20.04. My franken-code below doesn't quite work and deletes the image files. for f in * do (...)
17:09
Batch Compress all Images and Videos in a Folder with ffmpeg - Jason Hunter Newest 'ffmpeg' Questions - Stack Overflow

for f in * do extension="$f##*." filename="$f%.*" ffmpeg -i "$f" -q:v 1 "$filename"_lq."$extension" rm -f "$f" done How do I use the known working code shown above to do two things simultaneously? Compress all jpg files in the working directory, utilizing ffmpeg's -q:v 1 argument Compress all mp4 files in the working directory, utilizing ffmpeg's -crf 23 argument I'm using Ubuntu Linux 20.04. My franken-code below doesn't quite work and deletes the image files. for f in * do (...)
15:56
Could not load file or assembly 'Accord.Video.FFMPEG.x64.DLL' or one of its dependencies. The specified module could not be found - Sandeep Kumar Newest 'ffmpeg' Questions - Stack Overflow

Trying to merge image and audio file to create a video file. I have tried changing the arch (x86 and x64). Manually moved all the dependent .dlls for "Accord.Video.FFMPEG.x64.DLL" to the the bin. used both Accord and Aforge, both of them have the same issue. installed VC++ redistribuable 2013 and 2015-19 Following is the base code: private const string _basePath = ⓐ"D:\\R&D Projects\\AudioVideoConvertor\\VideoAudioMerger\\VideoAudioMerger\\Images\\"; protected void Page_Load(object sender, EventArgs e) int width = (...) -- https://drive.google.com/file/d/1JAt8ZUCCsIwez0fkdvq_2FGeGXif5rwu/view?usp=sharing
14:10
PHP add whitespaces in string with an URL - Alberto Valerio Newest 'ffmpeg' Questions - Stack Overflow

Problem I have a temporary url to access an object from AWS-S3 $source = "http://mybucket..."; If I do a var_dump($source) it shows me the correct URL string(407) "https://mybucket.s3.amazonaws.com/storage/..." So I try to use this url in a ffmpeg command in this way (double quotes are required in ffmpeg) $cmd = 'ffmpeg -i "' . $source . '" ... shell_exec($cmd); This do not work, and when I do a var_dump($cmd) the url shows like this (whitespace beetween https: and the // ) "https: (...)
14:53
Setting up RTP on Nginx - Swap Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to use Janus Media Server to relay WebRTC streams to a particular RTP host/port, from where ffmpeg can pick it up as an input and convert it further to an rtmp stream, which can then be used to broadcast to various social media platforms (such as, YouTube, Twitch, Facebook, etc.) My inspiration for this has been the following blog - https://www.meetecho.com/blog/firefox-webrtc-youtube-kinda/ Specifically, I'm trying to replicate the following architecture - And Janus, as per their documentation, has a very neat API for doing it - (...) -- Janus Media Server, https://www.meetecho.com/blog/firefox-webrtc-youtube-kinda/
11:20
FFMpeg conversions from avi to mp4 does not succeed with video for safari and IE browsers - user27240 Newest 'ffmpeg' Questions - Stack Overflow

The ffmpeg command below does convert mp4 file from avi file successfully for chrome browser, but with browsers such as safari and IE(I have not tested with other browsers yet.) I can not see the video and I only can hear the audio which simply means that safari and IE browsers do not accept the conversion of video from avi file to mp4 file. for i in /xxxxxx/xxxxxxx/xxxxxxx/*.avi; do ffmpeg -i "$i" -pix_fmt yuvj422p "/xxxxxx/xxxxxxx/xxxxxxx/$(basename "$i" .avi).mp4"; done By the way, when I tried from flv file to mp4 with the same ffmpeg command both (...)
11:22
Generate frame images from video and compile them back to the video in-memory - gumkins Newest 'ffmpeg' Questions - Stack Overflow

I have to remove some repeating frames from the beginning of a video file. For that I'm generating frame images from the video ffmpeg -i input.mp4 -qscale:v 2 frame_%04d.jpg This command generates a set of files with index in name. Then I'm analyzing frames against some criteria programmaticaly, removing useless ones and compiling the rest back to the video file ffmpeg -r 60 -start_number 0 -i "frame_%04d.jpg" -c:v libx264 -vf "fps=25,format=yuv420p" out.mp4 What I don't like in this schema that IO operations take part in the process. I would like (...)

Newest 'x264' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/x264

10:21
How can I learn the effective quality of the h264_nvenc encoder? - pfdint2 Newest 'x264' Questions - Stack Overflow

I seek to ascertain the end-product quality of various cq ("constant quality") values for the h264_nvenc video encoder. To use the h264_nvenc encoder through ffmpeg and with a target quality, I follow the instructions in Nvidia's documentation, last paragraph of the linked anchor. I specify a Variable Bit Rate rate control mode (rc=vbr_hq) and a target quality (cq=). This should be enough to test various values of cq. The story should end there. HOWEVER, that only outputs the same perfect quality video of extremely large size for any cq value. (Using cq=1, cq=20, and (...) -- Nvidia's documentation

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

11:03
unable to read stderr - Sarmad S. Newest 'ffmpeg' Questions - Stack Overflow

I have the following code, which works fine locally: const child_process = require("child_process"); const path = require("path"); exports.handler = async (event) => var ffprobePath = path.resolve(__dirname, 'ffmpeg-static', 'ffprobe'); var ffmpegPath = path.resolve(__dirname, 'ffmpeg-static', 'ffmpeg'); var ffprobeArgs = [ '-i', 'tb.jpg' ] var proc = child_process.spawnSync(ffprobePath, ffprobeArgs); console.log(proc.stderr.toString()) //toString on (...)
09:43
Thumbnail of segmet videos with ffmpeg - guidop21 Newest 'ffmpeg' Questions - Stack Overflow

I am using FFMPEG to split a video into many 60 second video clips using a camera with the following command: ffmpeg -f dshow -rtbufsize 2000M -i video="Game Capture HD60 S (Video) (#01)" -preset slow -codec:a libfdk_aac -b:a 128k -codec:v libx264 pix_fmt yuv420p -b:v 1000k -minrate 500k -maxrate 2000k -bufsize 2000k -vf scale=854:480 -f segment -segment_time 60 -reset_timestamps 1 -flush_packets 1 "C:\\Program Files (x86)\\ffmpeg\\test\\clips\\testfile_%02d.mp4" For each segment I would also like to have the thumbnail of the video. How could I (...)
09:38
FFMPEG H264 with custom overlay per frame - La bla bla Newest 'ffmpeg' Questions - Stack Overflow

We have a stream that is stored in the cloud (Amazon S3) as individual H264 frames. The frames are stored as framexxxxxx.264, the numbering doesn't start from 0 but rather from some larger number, say 1000 (so, frame001000.264) The goal is to create a mp4 clip which is either timelapse or just faster for inspection and other checking (much faster, compressing around 3 hours of video down to At first I was creating a timelapse by pulling from S3 only the keyframes (i-frames? still rather new to codecs & stuff) and overlaying the filename on them and saving as png (which (...)
09:13
Reading frames from MP4 segment (.m4s). or Dash Segment [closed] - Vamsi Krishna Rayapati Newest 'ffmpeg' Questions - Stack Overflow

Generally we do it by copying init.mp4 and segment1.m4s to a video file and extract frames in that video It works fine. But it requires a temporary file I want to edit segment1.m4s directly ''' my idea is to decode the video Direclty with out using init file ''' Help me .how to do it ?
08:50
FFMPEG with KLV metadata - Mar Andrés López Newest 'ffmpeg' Questions - Stack Overflow

I am trying to clip a video with KLV. When I edit a video with KLV I lose the KLV metadata. I have read about -map 0 option, from my understading it copies all the streams of a video from the input 0. The command I have tried and it is not working is the following: ffmpeg -ss 00:01:00.000 -t 00:04:00.000 -re -i video.mpg -map 0 -c copy -f mpegts out.mpg When I use a video player that displays KLV the KLV is not displayed for out.mpg, But even more simple (without clipping the video): ffmpeg -i video.mpg -map 0 -c copy -f mpegts out.mpg If I do this to (...)
08:22
ffmpeg - maintain video quality as I apply multi-pass workflow, each includes decoding and encoding again, in video editing - Selene Newest 'ffmpeg' Questions - Stack Overflow

I'm using FFMPEG libraries do do some video manipulation, and due to complexity of filters and image overlaying, I have to run the process in multiple passes. This means, my process is as such: Open original video, decode it, run -complex_filter, recompress the video in whichever format the original video was encoded. Open the output from the first pass, run another -complex_filter, etc-etc. Sometimes I have to do the above 3-4 times. My concern is that the video, with every compression is losing quality - obvious signs of that is the file is shrinking in size with (...)
04:13
Duplicated frames when mering multiple videos with xfade filter (ffmpeg) - tjk Newest 'ffmpeg' Questions - Stack Overflow

I'm stuck with merging multiple videos with audio. This used to work on most videos I merged before but with some videos, I get the "More than 1000 frames duplicated" warning, and the output video is broken (some videos won't play, just static picture and the sound is misaligned). All videos are in the same format afaik. The only difference I see is that some are "yuvj420p(pc)" and most are "yuv420p". But I tried merging without those with "yuvj420p(pc)" and it didn't help. Already tried adding "-vsync vfr", didn't help too. Interestingly — if I remove the (...)
03:44
Concatenate Movies from Python List using MoviePy or FFmpeg - Python_Learner_DK Newest 'ffmpeg' Questions - Stack Overflow

I have about 10,000 short videos that I am trying to make several longer videos from. I've created these videos using MoviePy, but keep getting memory errors when trying to concatenate them back together. In my code I have an outer loop going through each letter of the alphabet and getting the files that start with that letter. From the returned video clips I get the length and and strip off the last 3.5 seconds (outro_clip_duration) of the video, and then add it into a Python list clips. Where I'm stuck is I then want to take this list (...)
01:25
Running pulseaudio inside docker container to record system audio - XXLuigiMario Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to set up a Docker container with Selenium that takes a recording of the browser with system audio using ffmpeg. I've got video working using Xvfb. Unfortunately, on the audio side, it seems to be more tricky. I thought I would set up a virtual pulseaudio sink inside the container, which would allow me to record its monitor: pacmd load-module module-null-sink sink_name=loopback pacmd set-default-sink loopback ffmpeg -f pulse -i loopback.monitor test.wav This works on my host operating system, but when trying to start the pulseaudio daemon in (...)
00:47
FFMPEG control delay and looping for generating APNG - fmw42 Newest 'ffmpeg' Questions - Stack Overflow

I have a (random selection) of JPG images that I want to use to make into an APNG animation using ffmpeg (to test the process). They are all the same dimensions (256x256). But I cannot seem to get the correct syntax to control the frame delay and loop control (to loop forever). Is it possible to set these parameters using ffmpeg when creating an APNG from a sequence of images? If so, can someone provide the proper syntax and/or show an example command? I have searched the ffmpeg documentation and cannot seem to find relevant syntax. I can do the following, but it will not accept (...)

23 September

Revisions : SPIP http://core.spip.org/projects/spip/activity

22:15
Evolution #4468: Unification des CSS pour les boutons et les icônes Revisions : SPIP

Alors, même en vidant entièrement le dossier tmp, j'ai : Fatal error: Uncaught Error: Call to undefined function ecrire_fichier_calcule_si_modifie() in C:\\laragon\\www\\spip33\\plugins-dist\\compresseur\\inc\\compresseur.php:302 Stack trace: #0 C:\\laragon\\www\\spip33\\plugins-dist\\compresseur\\inc\\compresseur_concatener.php(81): compresseur_callback_prepare_css('prive/themes/sp...') #1 C:\\laragon\\www\\spip33\\plugins-dist\\compresseur\\inc\\compresseur.php(206): concatener_fichiers(Array, 'css', Array) #2 C:\\laragon\\www\\spip33\\plugins-dist\\compresseur\\compresseur_fonctions.php(138): (...)

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

11:13
What are the other alternatives to FFMPEG for encoding and very low latency streaming? [closed] - Hamza Ghizaoui Newest 'ffmpeg' Questions - Stack Overflow

So the situation as following: I m receiving images on the fly from a camera, BMP format 4000x3000 pixel, encoding them into h264 or h265, and then streaming the result via HTTP and/or UDP. The whole process must take no more than 30 ms. I used FFMPEG with hardware acceleration as a start and it seems to deliver. There is doubt among our team that it is the best solution. and I wanna be absolutely sure that it is before I defend it openly :D would be glad to hear your takes on this :) Best (...)
22:55
Fatal Exception: java.lang.UnsatisfiedLinkError lopen failed: library name "/data/packagename/lib/arm64/libmobileffmpeg_abidetect.so" too long - Android198 Newest 'ffmpeg' Questions - Stack Overflow

Fatal Exception: java.lang.UnsatisfiedLinkError lopen failed: library name "/data/packagename/lib/arm64/libmobileffmpeg_abidetect.so" too long I got this error in android 5 devices because my app packagename is too long. i build apk with abi filters armeabi-v7a, arm64-v8a 'java.lang.System.loadLibrary (System.java:989) com.arthenica.mobileffmpeg.AbiDetect. (AbiDetect.java) com.arthenica.mobileffmpeg.AbiDetect.getNativeAbi (AbiDetect.java) com.arthenica.mobileffmpeg.AbiDetect.setArmV7aNeonLoaded (AbiDetect.java) (...)
22:39
Invalid data found when processing input. No start code is found - Alex Blokha Newest 'ffmpeg' Questions - Stack Overflow

I am trying to concat video from many files. But sometimes I receive an error: "Invalid data found when processing input". So, I am trying to iterate over files with ffprobe and find invalid files. Here is the error. ffprobe started on 2020-06-28 at 16:06:39 Report written to "ffreport.log" Log level: 32 Command line: "f:\\\\prog\\\\ffmpeg\\\\bin\\\\ffprobe.exe" -i Rec496_20200423123337_A_1.avi ffprobe version git-2020-03-23-ba698a2 Copyright (c) 2007-2020 the FFmpeg developers built with gcc 9.2.1 (GCC) 20200122 configuration: --enable-gpl (...)
20:51
How can I correctly provide a mock webcam video to Chrome? - doppelgreener Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to run end-to-end testing in Chrome for a product that requires a webcam feed halfway through to operate. From what I understand this means providing a fake webcam video to Chrome using the --use-file-for-fake-video-capture="/path/to/video.y4m" command line argument. It will then use that as a webcam video. However, no matter what y4m file I provide, I get the following error from Chrome running under these conditions: DOMException: Could not start video source code: 0, message: "Could not start video source", name: (...) -- the Chromium file that explains fake video capture, the example y4m file list, TestRTC
20:49
PyInstaller --noconsole still shows the console after running the app - Kiren78 Newest 'ffmpeg' Questions - Stack Overflow

I've built an app to download and play sound everytime someone inserts or removes USB drive from PC. Code: from playsound import playsound from win10toast import ToastNotifier from time import sleep from typing import Callable import threading import os import youtube_dl import win32file def play_audio(): try: path = os.getcwd() + "\\\\audio.mp3" ydl_opts = 'format': 'bestaudio/best', 'postprocessors': [ 'key': 'FFmpegExtractAudio', (...)
19:57
Streaming a programatically created video to youtube using node and ffmpeg - Caltrop Newest 'ffmpeg' Questions - Stack Overflow

I've been trying to Livestream a programmatically created image to youtube using node. I've had very limited success using FFmpeg. While I have managed to create and save an image thanks to this insightful thread, I have yet to make the code work for streaming to an RTMP server. const cp = require('child_process'), destination = 'rtmp://a.rtmp.youtube.com/live2/[redacted]', //stream token redacted proc = cp.spawn('./ffmpeg/bin/ffmpeg.exe', [ '-f', 'rawvideo', '-pix_fmt', 'rgb24', (...)
17:20
Read and check the duration of small mp4 files in a directory then concatenate into 3 mins each then assign a unique name in BASH - super_nooba Newest 'ffmpeg' Questions - Stack Overflow

OS: Darwin Kernel Version 19.6.0 Step 1: Scan all the files until it reaches 3 mins of duration for f in *.mp4; do ffmpeg -i "$f" 2>&1 | grep "Duration" \\ | grep -o " [0-9:.]*, " | head -n1 | tr ',' ' ' \\ | awk -F: ' print ($1 * 3600) + ($2 * 60) + $3 ') How do I assign a variable or loop until it reaches the combination of different videos until 3 mins minimum and 4 mins max? Step 2: Concatenate and assign a unique name when 3 mins is reached ffmpeg -i concat $f Step 3: Resize to 1080p and (...)
17:04
LibAV FFMPEG How to get devices list? - FennecFix Newest 'ffmpeg' Questions - Stack Overflow

I looked up to documantation and found a very convenient AVInputFormat's funciton get_device_list . But the problem is I can't use it. Here's my short code snippet #include extern "C" #include #include int main(int argc, char *argv[]) avdevice_register_all(); AVFormatContext *formatContext = avformat_alloc_context(); AVInputFormat *inputFormat = av_find_input_format("dshow"); AVDeviceInfoList devices; inputFormat->get_device_list(formatContext, &devices); qDebug() (...)

Revisions : SPIP http://core.spip.org/projects/spip/activity

16:06
Evolution #4468: Unification des CSS pour les boutons et les icônes Revisions : SPIP

J'ai changé l'icône d'export plutôt que l'autre comme le suggérait RastaPopoulos, ça me semble plus logique. ⓐRealET : ça persiste après un recalcul ? J'ai une erreur php quand je bascule du master sur cette branche mais c'est normal car elle est en retard de quelques mois sur le master, donc certaines fonctions invoquées dans les fichiers mis en cache manquent. Par contre ton erreur ne semble pas concerner le dépôt spip mais un des plugins dist, donc je vois pas trop pourquoi elle apparaît juste là. ⓐRastaPopoulos : j'en parle justement plus haut : (...)

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

16:38
Diagonal split to show two positions of the same video frame. Landscape input, portrait output - ajomajo Newest 'ffmpeg' Questions - Stack Overflow

I have a 16:9 video with two faces talking to eachother. I want to make a portrait video output (for smartphones viewport) where I show both faces in the same frame, split diagonally. Is this possible? Like this: from [o o] to [%] I have used a filter .script-file earlier to fit one face into the frame, but now I'd like to fit both faces from the same scene, and preferably diagonally. The viewer will be able to see the two faces having a dialogue in a portrait aspect ratio, no matter how far away they are from eachother in the original landscape aspect (...)
16:03
Merge Camera and AudioListener feeds into a video in Unity for OpenCV - KDelli Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to create a simulated environnement using Unity3D. My first goat is to fetch the camera and audiolistener feeds and merge / convert it into a readable video. Once I get this, I want to send this to OpenCV. To do so, I have created a scene with a camera and an object that emit a constant noise. Then, I have attached this script to the camera to catch the feeds : private Texture2D texture; private byte[] lastTexture; private float[] lastAudio; private void Start () texture = new Texture2D(Screen.width, Screen.height, (...)

Revisions : SPIP http://core.spip.org/projects/spip/activity

14:59
Anomalie #4555 (Nouveau): Révisions de lien si personne logé - jluc - Revisions : SPIP

Dans https://git.spip.net/spip/revisions/src/branch/master/inc/revisions_pipeline.php#L319 $GLOBALS['visiteur_session']['id_auteur'] est parfois undefined sur un de mes sites, pour un lien sur spip_gis. Ne faut il pas prendre en compte l'éventualité que personne soit logé et ajouter "(... ?? 0)" ?
13:34
Evolution #3821: [sécurité - cookie] possibilité de gérer l'attribut "secure" du cookie spip sess... - b b Revisions : SPIP

Topito marcimat :) On ferme ?

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

14:53
Prevent ffmpeg from distorting images - asored Newest 'ffmpeg' Questions - Stack Overflow

I´m using ffmpeg in a Flutter application to create a video from many images. The code to handle this job is the following: r $settingsFps -i $tempPath/img%04d.jpg -vcodec libx264 -y -an -vf "pad=ceil(iw/2)*2:ceil(ih/2)*2" -vf "scale=1920:-2,format=yuv420p" $tempPath/$videoFileName.mp4 For the resolution seems that ffmpeg chooses the resolution from the first picture. But there is one problem: All other pictures with another resolution are heavy stretched.. Example / What I get: I have a gallery with portrait and landscape images. If the landscape image is the (...)
14:38
How to pipe multiple images, being created in parallel with an index, to ffmpeg so that it can match the speed of image creation? - vishwas.mittal Newest 'ffmpeg' Questions - Stack Overflow

We've a system that spews out 4-channel png images frame-by-frame (we control the output format of these images as well, so we can use something else as long as it supports transparency). Right now, we're waiting for all the images and then encoding them with ffmpeg into a webm video file with vp8 (libvpx encoder). But we now want to pipeline these images to FFmpeg to encode into the WebM video simultaneously as the images are being spewed out so that we don't wait for ffmpeg to encode all the images afterwards. This is the current command, in python (...)
14:09
Ffmpeg capturing from campera not using built in microphone - Expressingx Newest 'ffmpeg' Questions - Stack Overflow

I have Logitech HD Webcam C270 and I want to capture both video and audio from the camera built in microphone. ffmpeg -f dshow -i video="Logitech HD Webcam C270" out.mp4 But there is no audio in the output file. Why?
13:12
Is there any way to remove Protected metadata? - Nojus741 Newest 'ffmpeg' Questions - Stack Overflow

I have an Audio file which plays fine in VLC player, but not in other players. I opened up properties of the file and it says Encryption: Encrypted, but there is no protection on this file as it plays in VLC player. Is there any way to remove this metadata? File info: Format : iso6 Codec ID : iso6 (iso6/dash) File size : 127 MiB Duration : 1 h 29 min Overall bit rate : 199 kb/s Audio ID : 1 Format : AAC LC Format/Info : Advanced Audio Codec Low Complexity Codec ID : enca-40-2 Duration : 1 h 29 min Bit rate : 192 kb/s Channel(s) (...)
12:22
How to pipe openCV images to ffmpeg? - vishwas.mittal Newest 'ffmpeg' Questions - Stack Overflow

We are generating 4-channel png images one-by-one, and we want to pipeline it to FFmpeg to encode to WebM, with an audio file. How can we do that with optimum speed? (My target is >1x—more that better).
11:57
How to upload and overlay animation.html file from system and overlay over video in HTML or ANGULAR - Hiren Newest 'ffmpeg' Questions - Stack Overflow

Hey I am trying to build an app which has a functionality of allowing a user to upload a pre-existing .HTML file from his system which contains a simple animation init I want to get that file and overlay the animation contained in .HTML file on my video and display it to the user. is that possible please help me if it is. body background: #; #fullScreenBox height: 500px; width: 50%; background: #; position: absolute; top: 0; bottom: 0; left: 0; right: 0; margin: (...)
11:43
Unosquare FFMediaElement Edit the segments from m3u8 at runtime - user14326452 Newest 'ffmpeg' Questions - Stack Overflow

I am trying to understand the way of m3u8 streaming in UnoSquare FFME MediaElement . In the UnoSquare FFMediaElement, I can play the simple m3u8 file from the URL , but I have the URL which have encrypted videos, there are some keys that need to be provided for segments on runtime to decrypt and play. I am going through the source code : https://github.com/unosquare/ffmediaelement So , I want to know the detail how the m3u8 file is played and if I want to edit/append some keys in the segments list how can I do that, any help is is greatly (...) -- https://github.com/unosquare/ffmediaelement
11:33
How do I combine intermediate video and audio input in filter_complex using shortest input? - ed22 Newest 'ffmpeg' Questions - Stack Overflow

I have one video and one audio stream (for simplicity) and try to combine them (so that the result ends where the shortest input ends). This definition works but the resulting output is as long as the longest of inputs. I need the shortest. [video][audio:a]concat=n=1:v=1:a=1[out];

Revisions : SPIP http://core.spip.org/projects/spip/activity

10:23
Evolution #3821: [sécurité - cookie] possibilité de gérer l'attribut "secure" du cookie spip sess... Revisions : SPIP

J’ai complété par https://git.spip.net/spip/spip/commit/d6552d0563 en fait, car trop optimiste, la version avec $options en tableau est arrivée en PHP 7.3, de même que l’option samesite. Du coup, on applique same que pour php >= 7.3. Alternative sinon il faudrait passer par la fonction header() comme a fait Nextcloud là dans sa classe setCookie : https://github.com/nextcloud/server/commit/d01905200aa2da5f6271815975500dc7f30fd050

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

10:05
How to decrypt Encrypted Video Stream (AES - 128) - Kartik Bhushan Newest 'ffmpeg' Questions - Stack Overflow

I was trying to download a video from a website using python and the URL turned out to be a BLOB. Moving along I found the "master.m3u8" link and found the .ts files. The .m3u8 file #EXTM3U #EXT-X-VERSION:3 #EXT-X-MEDIA-SEQUENCE:0 #EXT-X-ALLOW-CACHE:YES #EXT-X-TARGETDURATION:7 #EXT-X-KEY:METHOD=AES-128,URI="https://andreasucci.nichevid.com/key/41791",IV=0xa470bf3cdecac388cc4ac8509df46f1e #EXTINF:6.066667, 37eb6942-144d-48e0-bb50-ad2deaf34687_partintroduction-2M00000.ts #EXTINF:6.000000, 37eb6942-144d-48e0-bb50-ad2deaf34687_partintroduction-2M00001.t -- https://andreasucci.nichevid.com/key/41791
09:59
Renaming image files in windows for timelapses - esdoublelef Newest 'ffmpeg' Questions - Stack Overflow

I just wanted to share this tip. I'm just answering my own question. If you select all and rename the images as "img(0001).jpg" you will end up having img(0001).jpg, img(2).jpg, img(3).jpg, ... img(11).jpg.... img(21).jpg this messes the order up as the img(21).jpg will be placed after img(2).jpg. (At least this happens for my ffmpeg code) The solution is to name your files img(1001).jpg (i.e. start from 1000. that way, windows file explorer will name the other files as img(1001).jpg, img(1002).jpg, img(1003).jpg, img(1004).jpg I'm just putting this (...)
07:13
ffmpeg rtmp broadcast on youtube speed below 1x - usr6969 Newest 'ffmpeg' Questions - Stack Overflow

i made an python and opencv program that produce frame per second around 8-15fps with MJPEG output format where MJPEG address served on localhost webserver (0.0.0.0:5000) and, i do attempt to broadcast its frame to rtmp server like youtube using ffmpeg so basically i do convert MJEG to flv and forward to rtmp server with following command ffmpeg -f mjpeg -i http://0.0.0.0:5000/video_feed -f lavfi -i anullsrc -c:v libx264 -vf "scale=trunc(oh*a/2)*2:320,unsharp=lx=3:ly=3:la=1.0" -crf 24 -c:a aac -ac 1 -f flv rtmp://a.rtmp.youtube.com/live2/xxx-xxx-xxx but unfortunatelly youtube stream has (...) -- ,
08:49
Capturing Screen with FFMPEG on RTP protocol - mertakkartal Newest 'ffmpeg' Questions - Stack Overflow

I am struggling about capturing the screen of remote computer on the same network with ffmpeg on RTP protocol. On the remote computer I run these two parameter blocks in different bash scripts for making the server catches the stream. For video : ffmpeg -f x11grab -framerate 25 -video_size uhd2160 -i :0.0 -c:video h264_nvenc -preset fast -pix_fmt bgr0 -b:v 6M -g 25 -an -f rtp_mpegts rtp://multicastaddress:videoPort For Audio: ffmpeg -f alsa -i hw:0,0 -c:audio aac -b:a 48K -f rtp_mpegts rtp://multicastaddress:audioPort Then , I run my ffmpeg capturing screen (...)
02:03
How to espace quotes, double quotes and colon inside double quotes when using FFMpeg - DnerD.Dev Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to get a text written onto a video. I can get it to work when I do it in a single line but not when I need to quote the drawtext inside the double quotes to write two lines. ffmpeg.exe -i input.ts -vf "[in]drawtext=fontfile=Bebas-Regular.ttf:text='"Day: Sunday"':fontcolor=white:y=(h-h*0.2):x=(w-w*0.95):fontsize=36, drawtext=fontfile=Bebas-Regular.ttf:text='"thing1, thing2, thing3"':fontcolor=white:y=(h-h*0.1):x=(w-w*0.95):fontsize=36[out]" -codec:a copy output1.mp4 I've tried so many combinations of \\ but I can't get it to work. The (...)

22 September

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

21:02
ffmpeg - libx264 + slideshow produces smeared output [duplicate] - epilitimus Newest 'ffmpeg' Questions - Stack Overflow

I recently upgraded to ffmpeg version 4.3.1 with libx264. When I use it to generate a single image slideshow ffmpeg -y -loop 1 -i shapes.jpg -t 0:0:5 -vcodec libx264 output.mp4 I get a smeared image that looks like a technicolor waterfall (I know the -vcodec is redundant here).If I force use of the mpeg4 codec ffmpeg -y -loop 1 -i shapes.jpg -t 0:0:5 -vcodec mpeg4 output.mp4 everything works fine. I have tried several different input images but for example: https://cdn4.vectorstock.com/i/1000x1000/84/48/simple-geometric-shape-vector-13698448.jpg (...) -- https://cdn4.vectorstock.com/i/1000x1000/84/48/simple-geometric-shape-vector-13698448.jpg, technicolor waterfall
21:01
Ffmpeg seeking with m3u8 ineffective - Lemon Sky Newest 'ffmpeg' Questions - Stack Overflow

Following the answer at Ffmpeg inaccurate cutting with ts and m3u8 files despite resamping audio filter, I am cutting some portion out of an m3u8 file. My m3u8 has a segment every 4 seconds, so I seek to a location around 10 seconds before the cutting point with -ss before -i. Then adjust position with -ss after -i. Here are two examples where the starting cut points are off by 1s: ffmpeg -y -ss 0:03:22 -start_at_zero -i http://tyberis.com/CFTE-AM_2020-08-28_23-00-00.m3u8 -ss 1 -t 0:00:10 322.wav ffmpeg -y -ss 0:03:23 -start_at_zero -i (...)
20:27
Merging video in a specific order using ffmpeg - Terry Newest 'ffmpeg' Questions - Stack Overflow

I use the following to merge video in numeric order. for f in *; do mv "$f" "$f: -17"; done &&. find *.ts|. sed 's:\\:\\ :g'| sed 's/^/file /' > fraglist.txt && ffmpeg -f concat -safe 0 -i fraglist.txt -c copy output.ts; rm fraglist.txt This works great for files named like the following... 000001 000002 000003 000004 000005 000006 000007 000008 000009 000010 But If I need something like the following merged the order is based on how many digits there are in the file name... 1708.ts 9803.ts (...)
20:04
Display a specific string in each frame with ffmpeg - Robyc Newest 'ffmpeg' Questions - Stack Overflow

I'm creating a video from a set of images like this ffmpeg -f concat -safe 0 -r 1 -i video_file.txt -crf 0 video_file.mkv where video_file.txt contains the filepath of the images, which looks like this: file '/path/to/image1.tif' duration 0.5 file_packet_metadata name=image1_name file '/path/to/image2.tif' duration 0.5 file_packet_metadata name=image2_name ... Concat reads all the lines starting with file '...' and correctly creates the output video. I want that for each frame a specific (...)

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

18:31
avcodec/magicyuv: add support for recently added new format - Paul B Mahol git.videolan.org Git - ffmpeg.git/rss log

avcodec/magicyuv: add support for recently added new format [DH] libavcodec/magicyuv.c [DH] libavformat/isom.c [DH] libavformat/riff.c

Revisions : SPIP http://core.spip.org/projects/spip/activity

19:06
Anomalie #4543: Accessibilité des chargements ajax (live regions) - nicod _ Revisions : SPIP

Pour info, mon interlocuteur sur ces questions, que je cite, est Eric Gateau, de Temesis (https://temesis.com/a-propos/equipe-temesis/) avec qui je collabore sur un projet en ce moment.
18:51
Evolution #3821 (En cours): [sécurité - cookie] possibilité de gérer l'attribut "secure" du cooki... Revisions : SPIP

J’ai envoyé : https://git.spip.net/spip/spip/commit/63a427ac2 https://git.spip.net/spip/spip/commit/607ad198 Ça introduit la possibilité d’avoir _COOKIE_SECURE , sur 'spip_session'. Je ne vois pas trop le rapport avec 'spip_lang' cela dit ?, donc je ne l’ai pas mis dessus. Si quelqu’un·e a des détails à fournir (ou s’il faut pouvoir définir la liste, dites le :) Par défaut aussi, j’envoie maintenant aussi samesite => Lax.

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

18:14
Convert video files from mkv to mp4 w/ AC3 - Kushal Sai Gunturi Newest 'ffmpeg' Questions - Stack Overflow

The new spatial audio feature came out on the airpods and I'd like to convert my current 5.1 mkv files to mp4 files with AC3, since it is the only file format supported for spatial audio. I'm unfamiliar with ffmpeg, and would like help on how to convert my files.
16:53
Rotate text in ffmpeg - Konduri Sai Aditya Newest 'ffmpeg' Questions - Stack Overflow

ffmpeg -y -i test.png -i test.mp4 -filter_complex "[1:v]scale=1152:648,rotate=0:c=blackⓐ0:ow=rotw(0):oh=roth(0)[rotate0];[0:v][rotate0]overlay=304.2:172.29,drawtext=fontfile=test.ttf:text='hi text':fontsize=40:fontcolor=white:x=426.05:y=852.04,format=yuv420p" est.mp4 Above is the command for drawing text in mp4 video, but if in the case if need to apply to rotate for text, I should I do. Can anyone help me with command?
14:30
Set the filename downloaded via youtube-dl to a variable [closed] - Jim Jamil Newest 'ffmpeg' Questions - Stack Overflow

This is the current script, it's a Windows batch file that prompts for a Youtube url and then downloads the best audio in m4a. It's basically cobbled together and uses aria2 to manage the download. ⓐecho off SETLOCAL ENABLEDELAYEDEXPANSION (set /p var1="Url? " && youtube-dl -f bestaudio[ext=m4a] --external-downloader aria2c --external-downloader-args "-j 16 -s 16 -x 16 -k 5M" --restrict-filenames -o "%%(title)s.%%(ext)s" --add-metadata --embed-thumbnail !Var1!) ENDLOCAL pause After asking for the url, I want to also prompt the user to input (...)

Revisions : SPIP http://core.spip.org/projects/spip/activity

15:00
Anomalie #4543: Accessibilité des chargements ajax (live regions) - nicod _ Revisions : SPIP

nicod _ a écrit : C'est bien ce que je comprends des recos, oui, attribut aria sur le premier résultat et redonner le focus sur cet élément. J'ai dit une bêtise : retirer l'attribut aria-live et juste gérer le focus. Précisions : (D'ailleurs, pour effectuer cela, afin de donner le focus à un élément qui normalement ne le reçoit pas, il faut lui ajouter un attribut tabindex="-1".) Enfin, il est vraiment important de voir en contexte leur nécessité, si je reprend l'exemple donné sur le github de la disic, à propos d'un panier d'achats, ce n'est pas aussi simple qu'ils l'ont écrit. Tout va dépendre du (...)

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

14:34
Resampling audio with FFMPEG LibAV - FennecFix Newest 'ffmpeg' Questions - Stack Overflow

Well, since FFMPEG documentation and code examples are absolute garbage, I guess my only choise is to go here and aks. So what I'm trying to do is simply record audio from microphione and write it to the file. So I initialize my input and out formats, I get an audio packet decode it, resample, encode and write. But everytime I try to play and audio there's only a stub of data. It seems like for some reason it writes only a start packet. Which is still very strange and let me explain why: if((response = swr_config_frame(resampleContext, audioOutputFrame, frame) (...)
14:08
How to suspend and resume ffmpeg during encoding? - guidop21 Newest 'ffmpeg' Questions - Stack Overflow

I am using FFMPEG to split a video into many 60 second video clips using a camera with the following command: ffmpeg -f dshow -rtbufsize 2000M -i video="Game Capture HD60 S (Video) (#01)" -preset slow -codec:a libfdk_aac -b:a 128k -codec:v libx264 -pix_fmt yuv420p -b:v 1000k -minrate 500k -maxrate 2000k -bufsize 2000k -vf scale=854:480 -f segment -segment_time 60 -reset_timestamps 1 -flush_packets 1 "C:\\Program Files (x86)\\ffmpeg\\test\\clips\\testfile_%02d.mp4" I would also like to be able to do suspend and resume. How can I do? Thank (...)
14:02
Upgrade ffmpeg (or rust) on OSX 10.12 cannot find make - gemp Newest 'ffmpeg' Questions - Stack Overflow

Trying to brew upgrade ffmpeg on OSX 10.12 Sierra but when it arrived to install rust I had the following error: make: error: unable to find utility "make", not a developer tool or in PATH xcodebuild: error: SDK "/Library/Developer/CommandLineTools/SDKs/MacOSX10.13.sdk" cannot be located. clang: error: unable to find utility "clang", not a developer tool or in PATH But which make gives /usr/bin/make and xcrun make is recognized and ls -l /Library/Developer/CommandLineTools/SDKs/MacOSX10.13.sdk gives lrwxr-xr-x 1 root wheel 10 Dec 21 2017 (...)
13:28
FFMPEG fails while processing MOV files - Tom Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to convert video files to DASH format. All videos work great except MOV videos. I'm using the following command: /usr/local/bin/ffmpeg -y -i /path/to/mov/video.mov -c:v libx264 -c:a aac -bf 1 -keyint_min 25 -g 250 -sc_threshold 40 -use_timeline 1 -use_template 1 -init_seg_name 'video_init_$RepresentationID$.$ext$' -media_seg_name 'video_chunk_$RepresentationID$_$Number%05d$.$ext$' -seg_duration 10 -hls_playlist 0 -f dash -adaptation_sets -0:s -map 0 -s:v:0 854x480 -b:v:0 750k -strict -2 -threads 12 /output/path/video.mpd I get (...)
12:48
ffmpeg -var_stream_map Invalid keyval "v:0 - rmrf fly Newest 'ffmpeg' Questions - Stack Overflow

the ffmpeg command is correct, use ffmpeg command execute at command line is ok， int windows10 use java exec the command is ok , by only in linux when i use java exec the ffmpeg command throw expection the command : ffmpeg -i /data/vsftpd/Anchor.mp4 -b:v:0 1000k -b:v:1 256k -b:a:0 64k -b:a:1 32k -map 0:v -map 0:a -map 0:v -map 0:a -f hls -var_stream_map "v:0,a:0 v:1,a:1" -hls_segment_filename 'file_%v_%03d.ts' out_%v.m3u8 enter image description here [hls ⓐ 0xd31b5c0] Invalid keyval "v:0 [hls ⓐ 0xd31b5c0] Variant stream info update failed (...) -- enter image description here
11:08
Adding trimming option to Youtube-dl audio script - Jim Jamil Newest 'ffmpeg' Questions - Stack Overflow

This is the current script, it's a Windows batch file that prompts for a Youtube url and then downloads the best audio in m4a. It's basically cobbled together and uses aria2 to manage the download. ⓐecho off SETLOCAL ENABLEDELAYEDEXPANSION (set /p var1="Url? " && youtube-dl -f bestaudio[ext=m4a] --external-downloader aria2c --external-downloader-args "-j 16 -s 16 -x 16 -k 5M" --restrict-filenames -o "%%(title)s.%%(ext)s" --add-metadata --embed-thumbnail !Var1!) ENDLOCAL pause After asking for the url, I want to also prompt the user to input (...)
11:01
FFMPEG error when saving NDI stream to mp4 - user1163234 Newest 'ffmpeg' Questions - Stack Overflow

I am trying to record a NDI stream to a MP4 file(I want to stream the mp4 to rtmp endpoint after saving file). However I am getting this error when running this class. https://github.com/WalkerKnapp/devolay/blob/master/examples/src/main/java/com/walker/devolayexamples/recording/RecordingExample.java Error: Connecting to source: DESKTOP-GQNH46Q (Ari PC output) [file ⓐ 0x7fb4f2d48540] Setting default whitelist 'file,crypto' x265 [info]: HEVC encoder version 0.0 x265 [info]: build info [Mac OS X][clang 8.1.0][64 bit] 8bit+10bit+12bit x265 [info]: (...) -- https://github.com/WalkerKnapp/devolay/blob/master/examples/src/main/java/com/walker/devolayexamples/recording/RecordingExample.java
10:53
Cutting a video without re encoding using ffmpeg and nodejs (fluent-ffmpeg) - foufrix Newest 'ffmpeg' Questions - Stack Overflow

I have a quick question, I'm trying to do a cloud video editor, and i want to be able to cut out video usng nodejs. I'm using fluent-ffmpeg. Here is my code : const cutVideo = async (sourcePath, outputPath, startTime, duration) => console.log('start cut video'); await new Promise((resolve, reject) => ffmpeg(sourcePath) .setFfmpegPath(pathToFfmpeg) .setFfprobePath(ffprobe.path) .output(outputPath) .setStartTime(startTime) .setDuration(duration) .on('end', function (err) if (!err) (...) -- fluent-ffmpeg
10:34
ffmpeg arguments with flutter for video upload to firebase - ebg11 Newest 'ffmpeg' Questions - Stack Overflow

I have been trying to use ffmpeg to compress a videos file size so I can upload to firebase storage. I've ran the code on windows cmd and it works. But when i run it on flutter the quality of the video is terrible. I have also specified many values for the -crf param but the output videos quality and file size are always the same. int processSuccess = await _flutterFFmpeg.execute(["-i", "file1.mp4", "-crf", "23", "fileoutput.mp4"]); I had to change the package to video as the execution would fail on the default import as it could not find the (...) -- https://github.com/tanersener/flutter-ffmpeg
10:43
Stop FFMPEG changing extracted frame resolution - S_Wheel Newest 'ffmpeg' Questions - Stack Overflow

I'm using a bash script to extract frames from a bunch of videos in a folder. #!/bin/bash if [ "$1" == '' ] || [ "$2" == '' ] || [ "$3" == '' ]; then echo "Usage: $0 "; exit; fi for file in "$1"/*."$3"; do destination="$2$file:$#1:$#file-$#1-$#3-1"; mkdir -p "$destination"; ffmpeg -i "$file" -vsync 0 -frame_pts true -r 1000 "$destination/frame_%d.png"; done Using the ffmpeg command: ffmpeg -i "$file" -vsync 0 -frame_pts true -r 1000 -s "$destination/frame_%d.png"; My problem is the (...)
06:59
Receive HLS stream and rebroadcast - user9066046 Newest 'ffmpeg' Questions - Stack Overflow

I have commercial streaming server that streams via HLS in Europe. http://europe.server/stream1/index.m3u8 Now my clients in USA having some network issues due to distance. So I have deployed new server in USA. I'd like it to receive HLS streams from European server and respond to US based customers. So users can access like http://usa.server/stream1/index.m3u8 It will be H265/HEVC only so RTMP is not possible. Every tutorial I see on internet is based on RTMP. I have used following config from (...) -- https://docs.peer5.com/guides/setting-up-hls-live-streaming-server-using-nginx/
05:03
Mac terminal command to list files and sort by date to use in ffmpeg - Jeff Newest 'ffmpeg' Questions - Stack Overflow

I am using a gopro to film a bunch of videos. I want to then take those videos directly from the SD card folder and concatenate them into a single video (bypass an editor) by using FFMPEG. I'm currently able to stitch together "chaptered" videos with the following example command on my Mac (10.13): ffmpeg -f concat -safe 0 -i The reason for this is that the ffmpeg command requires a text file that looks like this: file '/folder/GH016992.MP4' file '/folder/GH036990.MP4' ... The real command is this, which (...) -- https://opensource.com/article/19/6/how-write-loop-bash
04:04
Cutting the videos based on start and end time using ffmpeg - Kalai Newest 'ffmpeg' Questions - Stack Overflow

I tried to cut the video using the start and end time of the video by using the following command ffmpeg -ss 00:00:03 -t 00:00:08 -i movie.mp4 -acodec copy -vcodec copy -async 1 cut.mp4 By using the above command i want to cut the video from 00:00:03 to 00:00:08. But it is not cutting the video between those times instead of that it is cutting the video with first 11 seconds. can anyone help me how resolve this? Edit 1: I have tried to cut by using the following command which is suggested by mark4o ffmpeg -i movie.mp4 -ss 00:00:03 -t (...)
04:39
FFMPEG doesn't work with mp4 and stdout - Max Grigoriev Newest 'ffmpeg' Questions - Stack Overflow

I need to add text to mp4 video. If I write result to file then everything is OK, but I want to read data from ffmpeg stream. I run command: ffmpeg -i sample.mp4 -filter_complex "drawtext='text=\\"Sample Text\\"':x=(w-text_w)/2:y=(h-text_h-line_h)/2:fontsize=40:fontcolor=white:fontfile=TimesNewRoman.ttf:enable='between(t,1,5)'" -f mp4 - I received the following error: ffmpeg version 2.2.2-tessus Copyright (c) 2000-2014 the FFmpeg developers built on May 7 2014 23:17:42 with clang version 3.3 (tags/RELEASE_33/final) (...)
00:20
Multiple bitrates HLS with ffmpeg-python - monomonedula Newest 'ffmpeg' Questions - Stack Overflow

I am currently using ffmpeg-python library to convert a .mp4 video into HLS format with output looking like this: ffmpeg.output( mp4_input, m3u8_name, format='hls', start_number=0, hls_time=5, hls_list_size=0, ), How do I make ffmpeg-python output HLS with in multiple bitrates and create a master playlist for them?

21 September

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

11:36
avformat/argo_asf: implement seeking - Zane van Iperen git.videolan.org Git - ffmpeg.git/rss log

avformat/argo_asf: implement seeking Causes some error as the ADPCM predictors aren't known, but the difference is negligible and not audible. Signed-off-by: Zane van Iperen <zaneⓐzanevaniperen.com> [DH] libavformat/argo_asf.c

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

16:52
How to merge several videos in a grid, in one video? [closed] - Kayra Uckilinc Newest 'ffmpeg' Questions - Stack Overflow

I have 36 video files with same dimensions and want to concatenate them into a one single video with 6x6 grid. Ideally is non-square number of videos are given for example 12, a 4x3 grid as the most square it can be would be great. I tried with matplotlib's animation library but failed to concatenate videos in both directions first as row then as columns. Any help is appriciated!
23:53
FFMPEG : add multiple drawtexts, vertically stacked, to a video - Ali Doggaz Newest 'ffmpeg' Questions - Stack Overflow

I wish to add several texts to a video. The texts should be vertically aligned, in the top center of the video. here is what I tried for now : n = len(titles) #Titles a list containing all the texts we will add to the video p = 0 for text in titles: os.system( fr'ffmpeg -i outputp.mp4 -filter:v drawtext="fontfile=Lato- Black.ttf:fontcolor=black:fontsize=60:text=' + f"'text':" + f'y=200-(n-p) * 62:x=(w- text_w)/2"-y outputp + 1.mp4') p = p + 1 As you can see, all the texts should have (...)
22:27
FFMPEG with moviepy - Shenhav Mor Newest 'ffmpeg' Questions - Stack Overflow

I'm working on something that concatenate videos and adds some titles on through moviepy. As I saw on the web and on my on pc moviepy works on the CPU and takes a lot of time to save(render) a movie. Is there a way to improve the speed by running the writing of moviepy on GPU? Like using FFmpeg or something like this? I didn't find an answer to that on the web, so I hope that some of you can help me. I tried using thread=4 and thread=16 but they are still very very slow and didn't change much. My CPU is very strong (i7 10700k), but still, rendering on (...)
21:54
AttributeError: module 'librosa' has no attribute 'output' - Aditya Kumar Newest 'ffmpeg' Questions - Stack Overflow

I am using librosa 0.6 in anaconda and i have also installed ffmpeg but i am still getting this error the code is a = np.exp(spectrum) - 1 p = 2 * np.pi * np.random.random_sample(spectrum.shape) - np.pi for i in range(50): S = a * np.exp(1j * p) x = librosa.istft(S) p = np.angle(librosa.stft(x, N_FFT)) librosa.output.write_wav(outfile, x, sr)
21:34
The good command for Broadway.js (H264) - Gamepigeek Newest 'ffmpeg' Questions - Stack Overflow

im use https://github.com/mbebenita/Broadway i stream h264 with ffmpeg with this command (broadway require baseline) /usr/bin/v4l2-ctl -v width=640,height=480,pixelformat=4 -p 30 -c h264_profile=0,repeat_sequence_header=1,rotate=0,video_bitrate=300000,brightness=50,contrast=-5 | ffmpeg -i /dev/video0 -c:v h264 -profile:v baseline -f rawvideo http://mynodejserver:8081/ the commands is working but i have artefact in my video :( (the bitrate os ok) look : artefacts how to fix this please (the good command) :) (...) -- https://github.com/mbebenita/Broadway, artefacts
21:00
FFMPEG with -vf yadif on progressive file produces incorrect 'Original Frame Rate' metadata double - hedgehog90 Newest 'ffmpeg' Questions - Stack Overflow

I've got an ffmpeg command that I often use, I incorporate the yadif argument for content that may or may not be interlaced: ffmpeg -i input.mkv -c copy -c:v hevc_nvenc -c:a:0 aac -b:a 192k -vf yadif=mode=1:deint=1 output.mkv This means if input.mkv is an interlaced video, I get double the frame rate and the footage is deinterlaced, and if it's progressive it remains so and the frame rate doesn't change, exactly as I want it. However, I've just noticed in Mediainfo that progressive videos processed by this command, it adds this mysterious "Original Frame (...) --
20:08
show subtitles list, get id and name of each subtitles track - user25 Newest 'ffmpeg' Questions - Stack Overflow

I would like to get some list of all available subtitles tracks like: #1 - id, name #2 - id, name #3 - id, name ... So list would tell how much subtitles tracks I have, show id and name of each track Is there any FFmpeg option to show such list?
19:33
Can you crop a photo to fit a circle using ffmpeg? - L04DB4L4NC3R Newest 'ffmpeg' Questions - Stack Overflow

I know that ffmpeg is very advanced and can be used to crop both photos and videos in order to rescale them. Bit mostly everything I've come across online uses the X and Y coordinates to crop a photo in ffmpeg. How can we use this to crop a photo in the form of a circle rather than a rectangle?
17:13
Use ffmpeg to create a music video with the cover on a black background - user6329530 Newest 'ffmpeg' Questions - Stack Overflow

I am trying to use this tutorial to create youtube videos with ffmpeg https://trac.ffmpeg.org/wiki/Encode/YouTube When using this example, I get a video that works however the background is white ffmpeg -loop 1 -framerate 2 -i albumcover.png -i audio.wav -c:v libx264 -preset medium -tune stillimage -crf 18 -c:a copy -shortest -pix_fmt yuv420p output.mkv I tried to add a color filter but that makes the whole video output black: ffmpeg -loop 1 -framerate 2 -i albumcover.png -filter_complex "color=s=1920x1080:c=black" -i audio.wav -c:v libx264 -preset medium -tune (...) -- https://trac.ffmpeg.org/wiki/Encode/YouTube
17:11
fade In and out effect on a text using ffmpeg in nodejs - sankar barman Newest 'ffmpeg' Questions - Stack Overflow

There are many examples for command line interface, but what i need is to achieve by having an object property with filter name and options. No solution have been found for this. Here is the code sample. Everything is working fine, but don't know the syntax for fade In and fade out. Please do help in this. Thanks in advance. ffmpeg("tmp/" + file.name).videoFilters( filter: 'drawtext', options: fontfile: 'Lucida Grande.ttf', x: 50, y:20, text: 'some title', fontsize: '56', fontcolor: (...)
17:06
ffmpeg encoded hls makes audio and video progressively out of sync - eschie Newest 'ffmpeg' Questions - Stack Overflow

When trying to encoding a source .mp4 to multiple bitrates and sizes for adaptive HLSv3 playback the resulting audio and video become progressively out of sync. When scrubbing to a later point it seems to reset, and stay in sync. I'm on the latest ffmpeg 4.2.1 via homebrew-ffmpeg, with the libfdk-aac codec. Note, this was also occurring with ffmpeg 4.1. ffmpeg version 4.2.1 Copyright (c) 2000-2019 the FFmpeg developers built with Apple LLVM version 9.0.0 (clang-900.0.39.2) configuration: --prefix=/usr/local/Cellar/ffmpeg/4.2.1-with-options_1 (...)
13:52
How to use ffmpeg to transcode many live streamed videos? [closed] - user14258924 Newest 'ffmpeg' Questions - Stack Overflow

PREMISE As a pet project, I am writing a live video streaming service, in Go, that can consume video streams from OBS via SRT(TS -> h264/aac) and RTMP(FLV -> h264/aac) protocols and am planning to support streaming video from web browser as well, captured from a web camera via JS. This ingress server will receive many video streams in various containers and codecs and I need to normalize them into single container and codec and then create multiple versions for various bitrates(ie. 240p, 360p, 480p, 720p, 1080p...) to pass along where needed in the application. Each stream is split (...)
16:16
Filter useless white frames at the beginning and duplicated frames at the end of captured video - gumkins Newest 'ffmpeg' Questions - Stack Overflow

I'm capturing HTML animation with use of Puppeteer and MediaRecorder API. Before starting the capturing I'm waiting for networkidle event (I tried networkidle0-2 but result is identical) await page.goto(url, waitUntil: 'networkidle0' ) For some reason, the animation starts to play 2-3 seconds after the capturing starts, and thus, white frames are captures. Similar, at the end of the video there are identical frames because capturing duration is a bit longer than animation plays. Thus I want to detect and cut off those repeating white frames (...)
15:39
Concatenate two files while keeping the duration the same as the two files separately - John Pollard Newest 'ffmpeg' Questions - Stack Overflow

When I calculate the duration of each individual file I want to concatenate I get 10.24 for both. So I figured when I concatenate the two files I would get a duration of file A plus file B or 10.24 + 10.24 giving me a total duration of 20.48 for the combined file. But no matter what command I use to concentrate I cannot get the same duration. Am I doing something wrong? ffprobe -i "audioA.mp3" -show_entries format=duration -v quiet -of csv="p=0" 10.24 ffprobe -i "audioB.mp3" -show_entries format=duration -v quiet -of csv="p=0" 10.24 Which makes a (...)
15:28
what's mean of program and layer in latm? - night Newest 'ffmpeg' Questions - Stack Overflow

I am a beginner for ffmpeg and mpeg. Recently,I is reading documents of mpeg-4 part3-aac,But I can't understand two terms that they was program and layer in latm format that is in multiplex layer .how does I understand them.Is program in latm the same with program in ts format. Thx! numProgram A data element indicating how many programs are multiplexed (numProgram+1). The minimum value is 0 indicating 1 program. numLayer A data element indicating how many scalable layers are multiplexed (numLayer+1). The minimum value is 0 indicating 1 (...)
14:37
Using a HLS m3u8 or DASH mpd as ffmpeg input: seeking performance - coder_uk Newest 'ffmpeg' Questions - Stack Overflow

I wonder if any FFMPEG wizards can help with this: I've seen examples (like FFmpeg code not working on http url for thumbnail extraction) of using a http URL as the input but so far only with an .mp4. If I were to instead use an ABR .m3u8/.mpd as the input (which, though a text file, does represent a video) ... is FFMPEG smart enough to work with it? To parse it? So ... if I gave it a 5 hour HLS VOD m3u8 as input (-i http...), and asked it for a frame at 4 hours in (-ss), would it only download that one 10s segment at the 4-hours point? And so only need to download a small (...)
14:31
How to change colour in WebM video using FFMPEG - gowtham kosaraju Newest 'ffmpeg' Questions - Stack Overflow

I Have a web video file in this want to change the colour of the video pixels which are in black to blue color. I tried with the below command. Input video: https://share.getcloudapp.com/WnuJoLGX ffmpeg -vcodec libvpx-vp9 -i input.webm -filter_complex "[0:v]format=rgba,lutrgb=r='if(eq(val,0),240,val)':g='if(eq(val,0),111,val)':b='if(eq(val,0),69,val)':a='val'[out]" -vcodec libvpx-vp9 -map "[out]" output.webm Output video: https://share.getcloudapp.com/geuzn6be But output video looks stuttering at the edges. Can anyone (...) -- https://share.getcloudapp.com/WnuJoLGX, https://share.getcloudapp.com/geuzn6be
14:14
ffmpeg error on DVCPRO HD encoding is not supported - Selene Newest 'ffmpeg' Questions - Stack Overflow

Please help, I'm trying to encode a video stream, and output the video using the same format as my input: ffmpeg -i input.mov -c:v dvvideo -pix_fmt yuv422p -b:v 115084915 -maxrate 115084915 -minrate 115084915 -r 29.97 -top 1 -color_primaries bt709 -color_trc bt709 -colorspace bt709 -vtag dvh6 -c:a copy -c:s copy -y output.mov this is the output: DVCPRO HD encoding is not supported.\\n[dvvideo ⓐ 0x7ffaee815c00] ff_frame_thread_encoder_init failed\\nError initializing output stream 0:0 -- Error while opening encoder for output stream #0:0 - maybe incorrect parameters (...)
10:47
Building the ffmpeg Libs as static (.lib) files on Windows - pma07pg Newest 'ffmpeg' Questions - Stack Overflow

I've got the build environment set up: https://www.linkedin.com/pulse/building-ffmpeg-windows-without-fuss-moshe-david From this I can successfully build ffmpeg.exe but I want to build libavcodec.lib etc statically for use with my project. I assume it's just a simple command line option for ./configure that I'm missng, but --enable-static builds the exe and --enable-shared builds the dlls... Any help on this would be much appreciated! (...) -- https://www.linkedin.com/pulse/building-ffmpeg-windows-without-fuss-moshe-david
10:08
Edit m4s files video - Yogevnn Newest 'ffmpeg' Questions - Stack Overflow

In my application i'm saving my video files in M4S format. I want to make an editing option for these files, my requirements are adding text and images at specific point of a video. My first thought was to generate photo for text inserting (using jimp) which is very easy. Now my goal is to make a single photo as a m4s file. preferably i would like to choose my own name for that file. How can i achieve that? The flow should be: image.jpg -> 5.m4s (...) -- jimp
10:04
ffmpeg concat discards audio stream - julian bechtold Newest 'ffmpeg' Questions - Stack Overflow

What I want to achieve I have two input videos which I do want to concatenate using ffmpeg. Issue The input videos contain two stereo audio channels: after concatenation, the second audio stream is lost: steps to reproduce The Command I used is ffmpeg -f concat -i list.txt -c:a copy -c:v copy demuxed.mp4 Additional Information The Console Output shows the second audio stream in input properly: The Output settings also show that there is only one audio output stream. But I want to have the exact same settings in to out, (...) -- , , ,
03:33
How to Add Watermark like tic tok using ffmpeg in android studio - arjunsinh Newest 'ffmpeg' Questions - Stack Overflow

I am trying To add Watermark Like Tic Tok using FFMPEG but it's Not working GeneralUtils.checkForPermissionsMAndAbove(MainActivity.this, true); LoadJNI vk = new LoadJNI(); try //String complexCommand = "ffmpeg -y -i /storage/emulated/0/in.mp4 -strict experimental -vf transpose=1 -s 160x120 -r 30 -aspect 4:3 -ab 48000 -ac 2 -ar 22050 -b 2097k /storage/emulated/0/out.mp4"; /*String complexCommand = "ffmpeg -i /storage/emulated/0/in.mp4 -framerate 30000/1001 -loop 1 -i /storage/emulated/0/abcd.jpg -filter_complex\\n" + " \\"[1:v] (...)
02:25
ffmpeg - top coded first (swapped) vs progressive -top 1 does not stick - Selene Newest 'ffmpeg' Questions - Stack Overflow

please help: I'm encoding a video, and because of my specific use-case, I have to encode it twice, in sequence, so that the output from the first run of ffmpeg goes into second encoding of ffmpeg as an input. I use "-top 1" option to force "top coded first (swapped)". When encoding the first iteration of encoding, everything works great (output from ffprobe below): Duration: 00:00:22.16, start: 0.000000, bitrate: 61390 kb/s Stream #0:0(eng): Video: mpeg2video (4:2:2) (xd5c / 0x63356478), yuv422p(tv, bt709, top coded first (swapped)), 1920x1080 ... etc-etc. (...)
01:35
How to Combine 2 FFmpeg Commands - John Doe Newest 'ffmpeg' Questions - Stack Overflow

Written for BATCH file. I have a command which creates a video from a concat list of clips, adds background music and then finishes with an outro mp3 and some silence. The output video is the length of the combined audio files. I then have a second command which adds a simple fade-in to the outputted video. I would like to do this on the first pass rather than re-encoding the entire video, however when I try to do this the video no longer stops rendering after the audio, but instead continues rendering for the length of the entire concat list. Is there a way to do this whilst (...)

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

01:03
MAINTAINERS: remove my public key fingerprint - Lou Logan git.videolan.org Git - ffmpeg.git/rss log

MAINTAINERS: remove my public key fingerprint Forgot to remove this last time I edited my info. Signed-off-by: Lou Logan <louⓐlrcd.com> [DH] MAINTAINERS

20 September

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

01:31
avcodec/cfhd: check that lowpass_height is >= 3 when used in vertical filter - Paul B Mahol git.videolan.org Git - ffmpeg.git/rss log

avcodec/cfhd: check that lowpass_height is >= 3 when used in vertical filter Also check for out of buffer access. Also return early when encountering fatal error. [DH] libavcodec/cfhd.c
12:28
avformat/swfdec: Reorder allocations/initializations - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log

avformat/swfdec: Reorder allocations/initializations The earlier code would first attempt to allocate two buffers, then attempt to allocate an AVIOContext, using one of the new buffers I/O buffer, then check the allocations. On success, a z_stream that is used in the AVIOContext's read_packet callback is initialized afterwards. There are two problems with this: In case the allocation of the I/O buffer fails avio_alloc_context() will be given a NULL read buffer with a size > 0. This works right now, but it is fragile. The second problem is that the z_stream used in the read_packet (...)
12:07
avformat/swfdec: Fix memleaks on error - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log

avformat/swfdec: Fix memleaks on error Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐgmail.com> [DH] libavformat/swfdec.c
18:55
avformat/movenc: simplify ISML manifest bit rate logic - Jan Ekström git.videolan.org Git - ffmpeg.git/rss log

avformat/movenc: simplify ISML manifest bit rate logic The newly calculated average bit rate value is pretty much what is being done here. [DH] libavformat/movenc.c
17:14
avformat/movenc: use more fall-back values for average bit rate fields - Jan Ekström git.videolan.org Git - ffmpeg.git/rss log

avformat/movenc: use more fall-back values for average bit rate fields If the average bit rate cannot be calculated, such as in the case of streamed fragmented mp4, utilize various available parameters in priority order. Tests are updated where the esds or btrt or ISML manifest boxes' output changes. [DH] libavformat/movenc.c [DH] tests/ref/lavf/ismv
14:26
avformat/movenc: implement writing of the btrt box - Jan Ekström git.videolan.org Git - ffmpeg.git/rss log

avformat/movenc: implement writing of the btrt box This is utilized by various media ingests to figure out the bit rate of the content you are pushing towards it, so write it for video, audio and subtitle tracks in case at least one nonzero value is available. It is only mentioned for timed metadata sample descriptions in QTFF, so limit it only to ISOBMFF (MODE_MP4) mode. Updates the FATE tests which have their results changed due to the 20 extra bytes being written per track. [DH] libavformat/movenc.c [DH] tests/fate/mov.mak [DH] tests/ref/fate/copy-trac3074 [DH] tests/ref/fate/movenc (...)
14:01
avformat/movenc: utilize bit rate helper function in ISML writing - Jan Ekström git.videolan.org Git - ffmpeg.git/rss log

avformat/movenc: utilize bit rate helper function in ISML writing This way we have a single location in movenc which utilizes the CPB properties. [DH] libavformat/movenc.c
13:41
avformat/movenc: split MPEG-4 bit rate value calculation - Jan Ekström git.videolan.org Git - ffmpeg.git/rss log

avformat/movenc: split MPEG-4 bit rate value calculation This can now be re-utilized in other places. [DH] libavformat/movenc.c
21:23
avformat/moflex: Check pop_int() for overflow - Michael Niedermayer git.videolan.org Git - ffmpeg.git/rss log

avformat/moflex: Check pop_int() for overflow Fixes: signed integer overflow: 2 * 2132811776 cannot be represented in type 'int' Fixes: 25722/clusterfuzz-testcase-minimized-ffmpeg_IO_DEMUXER_fuzzer-6221704077246464 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Paul B Mahol <onemdaⓐgmail.com> Signed-off-by: Michael Niedermayer <michaelⓐniedermayer.cc> [DH] libavformat/moflex.c
21:09
avformat/vividas: Check for EOF in first loop in track_header() - Michael Niedermayer git.videolan.org Git - ffmpeg.git/rss log

avformat/vividas: Check for EOF in first loop in track_header() Fixes: timeout (243sec -> a few ms) Fixes: 25716/clusterfuzz-testcase-minimized-ffmpeg_IO_DEMUXER_fuzzer-5764093666131968 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Paul B Mahol <onemdaⓐgmail.com> Signed-off-by: Michael Niedermayer <michaelⓐniedermayer.cc> [DH] libavformat/vividas.c
20:53
avformat/wvdec: Check rate for overflow - Michael Niedermayer git.videolan.org Git - ffmpeg.git/rss log

avformat/wvdec: Check rate for overflow Fixes: signed integer overflow: 6000 * -2147483648 cannot be represented in type 'int' Fixes: 25700/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-6578316302352384 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michaelⓐniedermayer.cc> [DH] libavformat/wvdec.c

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

23:11
fluent-ffmpeg unable to achieve consistent audio bitrate - Martin Newest 'ffmpeg' Questions - Stack Overflow

I am working on an electron app that runs ffmpeg commands to combine an audio file + image file into a video file. I'm using an fluent-ffmpeg command I wrote, which works, but the outputted video fiels always have a lower audio bit rate, even though I specify 320kbps in my command. I've been running multiple tests with mp3/flac/wav files that I logged below; using my fluent-ffmpeg command as follows: ffmpeg() .input(imgPath) .loop() .addInputOption('-framerate 2') .input(audioPath) .videoCodec('libx264') (...) -- , ,
23:09
FFmpeg copy mkv covers without re-encoding (`-c:t copy` does not work) - CasualDemon Newest 'ffmpeg' Questions - Stack Overflow

Using the Matrsoka test file with cover art https://sourceforge.net/projects/matroska/files/test_files/cover_art.mkv/download I am trying to copy the covers using the -c copy methodology, but I need to specify it only for the covers themselves, however -c:t copy does not seem to work. Video file streams: Stream #0:0: Audio: aac (LC), 44100 Hz, stereo, fltp (default) Stream #0:1: Video: h264 (High), yuv420p(progressive), 1272x720 [SAR 1:1 DAR 53:30], 24 fps, 24 tbr, 1k tbn, 48 tbc (default) Stream #0:2: Video: mjpeg (Baseline), yuvj444p(pc, bt470bg/unknown/unknown), (...) -- https://sourceforge.net/projects/matroska/files/test_files/cover_art.mkv/download

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

17:33
avformat/aaxdec: Fix potential integer overflow - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log

avformat/aaxdec: Fix potential integer overflow The AAX demuxer reads a 32bit number containing the amount of entries of an array and stores it in an uint32_t. Yet when iterating over this array, a loop counter of type int is used. This leads to undefined behaviour if the amount of entries is not in the range of int; to avoid this, it is generally good to use the same type for the loop counter as for the variable it is compared to. This is done in one of the two loops affected by this. In the other loop, the undefined behaviour can begin even earlier: Here the loop counter is multiplied (...)

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

20:21
Using Timeline Support with "reverse" in ffmpeg - Ffmpeg Newest 'ffmpeg' Questions - Stack Overflow

I want to reverse a small space in my video that doesn't seem like Timeline editing doesn't support that I tried to use the following command ffmpeg -y -i "input. *" -filter_complex "reverse = enable = 'gte (t, 3)': preset = cross_process" -vcodec libx264 -pix_fmt yuv420p -r 30 -g 60 -b: v 1200k -acodec libmp3lame -b: a 128k -ar 44100 -preset superfast "output .mp4" Look forward to the help . thank you
20:07
Remuxing MKV to MP4 fails when using -map 0 but works fine when Remuxing MP4 to MKV - AppetiteForDestruction Newest 'ffmpeg' Questions - Stack Overflow

I have an MKV file that contains 5 streams... 0: video 1: audio 2: audio 3: text 4: menu I was able to remux the MKV into an MP4 using this command... > ffmpeg.exe -i input.mp4 -map 0 -c copy -c:s mov_text output.mkv The resulting output MP4 contains all the streams from the original MKV. But if I try to remux the output MP4 into an MKV using the same command, but with a different codec for the subtitles (srt) and different file extension (mkv), I get an error. However, if I omit "-map 0" from the command, it works but only ONE of the audio (...)
18:42
FFMPEG + V4L2 OPTIONS - Pierre Newest 'ffmpeg' Questions - Stack Overflow

I am looking for a way to integrate the parameters of v4l2-ctl on ffmpeg the problem what ffmpeg overwrite v4l2-ctl and I need specific parameter has v4l2-ctl :( my v4l2-ctl commands is : v4l2-ctl -v width=640,height=480,pixelformat=4 -p 30 -c h264_profile=0,repeat_sequence_header=1 I want to use these parameters to then stream directly with FFMPEG how can I do ? Thanks !

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

13:21
avformat/swf: Separate mux and demux contexts - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log

avformat/swf: Separate mux and demux contexts There was almost no overlap between them: The only field used by both was an int named samples_per_frame. Therefore this commit separates them. Reviewed-by: Michael Niedermayer <michaelⓐniedermayer.cc> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐgmail.com> [DH] libavformat/swf.h [DH] libavformat/swfdec.c [DH] libavformat/swfenc.c

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

16:59
How to use GPU to accelerate the processing speed of ffmpeg filter? - Zedd W Newest 'ffmpeg' Questions - Stack Overflow

According to NVIDIA's developer website, you can use GPU to speed up the rendering of the ffmpeg filter. Create high-performance end-to-end hardware-accelerated video processing, 1:N encoding and 1:N transcoding pipeline using built-in > filters in FFmpeg Ability to add your own custom high-performance CUDA filters using the shared CUDA context implementation in FFmpeg The problem I am having now is how to use the GPU to speed up multiple ffmpeg filter processing? For example: ffmpeg -loop 1 -i dog.jpg -filter_complex (...)
16:59
ffmpeg subtitles alignment and position - friendlygiraffe Newest 'ffmpeg' Questions - Stack Overflow

I am adding subtitles to a video using: ffmpeg -i "imput.mp4" -lavfi "subtitles=subtitles.srt:force_style='OutlineColour=&H100000000,BorderStyle=3,Outline=1,Shadow=0,Fontsize=18'" -crf 1 -c:a copy "output.mp4" Which results in: I am repositioning this using Alignment : ffmpeg -i "imput.mp4" -lavfi "subtitles=subtitles.srt:force_style='Alignment=9,OutlineColour=&H100000000,BorderStyle=3,Outline=1,Shadow=0,Fontsize=18'" -crf 1 -c:a copy "output.mp4" But according to the Line-Alignment (...) -- Line-Alignment ASS Tags
16:45
ffmpeg cut video and put audio in the middle of it - deathangel908 Newest 'ffmpeg' Questions - Stack Overflow

I have a video file of 60s duration. an audio file of 35s duration I want to cut a video from 5th second to 50th and put an audio file in the middle that starts playing at 5th second of the output. So first 5 and last 5 seconds output video is silent. I also don't want to reencode the video so compilation would be fast and quality would stay exactly the same. I'm trying the following command ffmpeg -y -i DJI_0325.mp4 -ss 00:00:40.5 -i song.mp3 -c:v copy -c:a copy out.mp4 but the audio starts playing in the middle. I also tried (...) --

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

16:16
avformat/tedcaptionsdec: Fix leak of AVBPrint upon error - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log

avformat/tedcaptionsdec: Fix leak of AVBPrint upon error The tedcaptions demuxer uses an AVBPrint whose string is not restricted to its internal buffer; it therefore needs to be cleaned up, yet this is not done on error, as parse_file() returned simply returned directly. This is fixed by going to fail first in such cases. Furthermore, there is also a second way how this string can leak: By having more than one subtitle per subtitle block, as the new one simply overwrites the old one in this case as the AVBPrint is initialized each time upon encountering a subtitle line. The code has been (...)

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

15:25
How can i generate rtp pcap file with silk codec? - mohammad noroz Newest 'ffmpeg' Questions - Stack Overflow

for a university project my teacher said me generate rtp pcap file with silk codec. I explorer ffmpeg and i dont see any thing useful for me for generate rtp pcap file with encode silk codec.
14:59
I got that error when i try to play music with my bot on discord - TheKillerBoss 27 Newest 'ffmpeg' Questions - Stack Overflow

(node:10076) UnhandledPromiseRejectionWarning: TypeError: Cannot read property 'id' of undefined at play (C:\\Users\\USER\\Desktop\\Giochi e Programmi\\Foto video ecc\\Proggetti\\Discord-bot\\Akagi-chan\\Akagi_chan.js:49:51) at C:\\Users\\USER\\Desktop\\Giochi e Programmi\\Foto video ecc\\Proggetti\\Discord-bot\\Akagi-chan\\Akagi_chan.js:89:17 at processTicksAndRejections (internal/process/task_queues.js:97:5) (node:10076) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or (...) -- https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode
04:34
FFMPEG Combine a list of jpg with mo3 audios to sepatated videos on batch [closed] - Francisco Barrod Newest 'ffmpeg' Questions - Stack Overflow

i have a big list of jpg and mp3 files. each of them have identical names but they not enumerated. example cat.jpg and cat.mp3 pig.jpg and pig.jpg i want to make videos cat.mp4 pig.mp4 i have a code to do this manually but i want to make it on batch. heres my code ffmpeg -loop 1 -i cat.jpg -i cat.mp3 -threads 8 -shortest -c:v libx264 -c:a copy cat.mp4 its simple but works for my need. need help to make it on batch- thanks in (...)

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

09:53
avformat/argo_asf: cosmetics - Zane van Iperen git.videolan.org Git - ffmpeg.git/rss log

avformat/argo_asf: cosmetics Signed-off-by: Zane van Iperen <zaneⓐzanevaniperen.com> [DH] libavformat/argo_asf.c
00:19
avformat/argo_brp: don't pass AVStream into avpriv_request_sample() - Zane van Iperen git.videolan.org Git - ffmpeg.git/rss log

avformat/argo_brp: don't pass AVStream into avpriv_request_sample() Signed-off-by: Zane van Iperen <zaneⓐzanevaniperen.com> [DH] libavformat/argo_brp.c

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

11:47
How to use FFMPEG on Python/Windows10 with Pipe for Screen recording? - Trmotta Newest 'ffmpeg' Questions - Stack Overflow

I'd like to record the screen with ffmpeg as it seems to be the only player out there who can record a region of the screen along with the mouse cursor. The following code was adapted from i want to display mouse pointer in my recording but it doesn't work on a Windows 10 (x64) setup (using Python 3.6). #!/usr/bin/env python3 # ffmpeg -y -pix_fmt bgr0 -f avfoundation -r 20 -t 10 -i 1 -vf scale=w=3840:h=2160 -f rawvideo /dev/null import sys import cv2 import time import subprocess import numpy as np w,h = 100, 100 def (...) -- https://github.com/abhiTronix/vidgear, https://github.com/kkroening/ffmpeg-python
10:36
ffmpeg: error while loading shared libraries: libopenh264.so.5 - ESZ Newest 'ffmpeg' Questions - Stack Overflow

I am using ffmpeg and getting this error ffmpeg: error while loading shared libraries: libopenh264.so.5: cannot open shared object file: No such file or directory I have already checked if the library exists and it does. I added it to /etc/ld.so.conf as mentioned in this previous question but it doesn't work.

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

08:46
avformat/swfdec: Avoid unnecessary skip - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log

avformat/swfdec: Avoid unnecessary skip Reviewed-by: Paul B Mahol <onemdaⓐgmail.com> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐgmail.com> [DH] libavformat/swfdec.c
08:05
avformat/swfenc: Fix memleak upon write_header error - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log

avformat/swfenc: Fix memleak upon write_header error The SWF muxer accepts at most one mp3 audio and at most one VP6F, FLV1 or MJPEG stream. Upon encountering an mp3 stream, a fifo is allocated that leaks if one of the subsequent streams is incompliant with the restrictions mentioned above or if the framerate or samplerate are invalid. This is fixed by adding a deinit function to free said fifo. Reviewed-by: Paul B Mahol <onemdaⓐgmail.com> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐgmail.com> [DH] (...)

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

05:56
How can I segment a ts file on scene change detection using FFmpeg? - Mike Davis Newest 'ffmpeg' Questions - Stack Overflow

I am either not asking the question in a way Google can understand, or no one has asked this, as every issue I can find is in regards to outputting images of each scene. I want to output video segments… I have an input video that is basically a slide show, except the slides coincide with songs, so they are not at regular intervals. I would like to segment and create a sequence of ts files that are split based on a scene change threshold, and have a separate ts file for each (...)
03:22
ffmpeg options for encoding a video mpeg2video but with .mov extension - Selene Newest 'ffmpeg' Questions - Stack Overflow

I just finished a project, and need to produce an output in the specific format, should be exactly the same as the format of the video I received. The best way for me to identify the source format was to use ffprobe. Here was the output of that: Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'input.mov': Metadata: creation_time : 2020-02-27T04:15:23.000000Z Duration: 00:00:22.13, start: 0.000000, bitrate: 111320 kb/s Stream #0:0(eng): Video: mpeg2video (4:2:2) (xd5c / 0x63356478), yuv422p(tv, bt709, top coded first (swapped)), 1920x1080 [SAR 1:1 DAR 16:9], (...)
00:29
Make Discord bot play sound from a direct url - merctraider Newest 'ffmpeg' Questions - Stack Overflow

I want to make a discordpy bot that plays audio files from a specific link on the internet, rather than from a local directory. It seems that all the other examples use ytdl, but those are for video streaming sites. How should I go about doing this? if(voice_channel != None): vc = await voice_channel.connect() vc.play(discord.FFmpegPCMAudio('http://website/001.mp3'), after=lambda e: print('done', e)) else: await ctx.send("Join a voice channel (...)

19 September

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

02:37
avformat/dashdec: Free subtitle representations on exit - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log

avformat/dashdec: Free subtitle representations on exit Reviewed-by: Steven Liu <lqⓐchinaffmpeg.org> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐgmail.com> [DH] libavformat/dashdec.c
01:04
avformat/dashdec: Don't overwrite and leak old initialization fragments - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log

avformat/dashdec: Don't overwrite and leak old initialization fragments Reviewed-by: Steven Liu <lqⓐchinaffmpeg.org> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐgmail.com> [DH] libavformat/dashdec.c
13:14
avformat/dashdec: Check allocation of AVProgram - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log

avformat/dashdec: Check allocation of AVProgram Reviewed-by: Steven Liu <lqⓐchinaffmpeg.org> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐgmail.com> [DH] libavformat/dashdec.c
12:32
avformat/dashdec: Cosmetics - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log

avformat/dashdec: Cosmetics 1. Perform the necessary reindentations after the last few commits. 2. Adapt switches to the ordinary indentation style. 3. Now that the effective lifetimes of the variables containing the freshly allocated strings used when parsing the representation are disjoint, the variables can be replaced by a single variable. Doing so has the advantage of making it more clear that these are throwaway variables, hence it has been done. Reviewed-by: Steven Liu <lqⓐchinaffmpeg.org> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐgmail.com> [DH] (...)
12:08
avformat/dashdec: Return early for unsupported representations - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log

avformat/dashdec: Return early for unsupported representations This allows to reduce the level of indentation for parsing the supported representations (audio, video and subtitles). It also allows to avoid some allocations and frees for unsupported representations. Reviewed-by: Steven Liu <lqⓐchinaffmpeg.org> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐgmail.com> [DH] libavformat/dashdec.c
10:27
avformat/dashdec: Remove redundant checks - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log

avformat/dashdec: Remove redundant checks This commit removes two always-true checks as well as a dead default case of a switch. The check when parsing manifests is always true, because we now jump to the cleaning code in case the format of the representation is unknown. The default case of the switch is dead, because the type of the representation is already checked at the beginning of parse_manifest_representation(). The check when reading the header is dead, because we error out if an error happened before. Reviewed-by: Steven Liu <lqⓐchinaffmpeg.org> Signed-off-by: Andreas (...)
08:52
avformat/dashdec: Fix memleaks on error to add representation to dynarray - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log

avformat/dashdec: Fix memleaks on error to add representation to dynarray Up until now, the DASH demuxer used av_dynarray_add() to add audio/video/subtitles representations to arrays. Yet av_dynarray_add() frees the array upon failure, leading to leaks of its elements; furthermore, the element to be added leaks, too. This has been fixed by using av_dynarray_add_nofree() instead and by freeing the elements that could not be added to the list. Furthermore, errors from this are now checked and returned. Reviewed-by: Steven Liu <lqⓐchinaffmpeg.org> Signed-off-by: Andreas Rheinhardt (...)
07:01
avformat/dashdec: Fix leak of representation languages - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log

avformat/dashdec: Fix leak of representation languages These languages are normally freed after having been added as metadata to their respective AVStreams. Yet if one never reaches said point, they leak. This can happen as a result of an error when reading the header or as a result of refreshing the manifests. Reviewed-by: Steven Liu <lqⓐchinaffmpeg.org> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐgmail.com> [DH] libavformat/dashdec.c
06:32
avformat/dashdec: Fix leak of string on error when parsing representation - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log

avformat/dashdec: Fix leak of string on error when parsing representation The DASH demuxer currently extracts several strings at once from an xml document before processing them one by one; these strings are allocated, stored in local variables and need to be freed by the demuxer itself. So if an error happens when processing one of them, all strings need to be freed before returning. This has simply not been done, leading to leaks. A simple fix would be to add the necessary code for freeing; yet there is a better solution: Avoid having several strings at the same time by extracting a (...)
04:28
avformat/dashdec: Fix leak of representation on error - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log

avformat/dashdec: Fix leak of representation on error If parsing a representation fails, it is not added to the list of representations and is therefore not freed in dash_close(); it therefore leaked in most error paths in parse_manifest_representation() (some error paths had (incomplete) code for freeing). This commit fixes freeing the representation in this case. Reviewed-by: Steven Liu <lqⓐchinaffmpeg.org> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐgmail.com> [DH] (...)
03:18
avformat/dashdec: Fix memleaks upon read_header failure - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log

avformat/dashdec: Fix memleaks upon read_header failure Reviewed-by: Steven Liu <lqⓐchinaffmpeg.org> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐgmail.com> [DH] libavformat/dashdec.c
20:48
avcodec/ansi: Check nb_args for overflow - Michael Niedermayer git.videolan.org Git - ffmpeg.git/rss log

avcodec/ansi: Check nb_args for overflow Fixes: Integer overflow (no testcase) Reviewed-by: Paul B Mahol <onemdaⓐgmail.com> Signed-off-by: Michael Niedermayer <michaelⓐniedermayer.cc> [DH] libavcodec/ansi.c
14:14
avformat/argo_brp: set BVID packet duration - Zane van Iperen git.videolan.org Git - ffmpeg.git/rss log

avformat/argo_brp: set BVID packet duration Signed-off-by: Zane van Iperen <zaneⓐzanevaniperen.com> [DH] libavformat/argo_brp.c
14:10
avformat/argo_brp: make sure stream ids match - Zane van Iperen git.videolan.org Git - ffmpeg.git/rss log

avformat/argo_brp: make sure stream ids match Signed-off-by: Zane van Iperen <zaneⓐzanevaniperen.com> [DH] libavformat/argo_brp.c
14:05
avformat/argo_brp: cleanup 'goto fail's - Zane van Iperen git.videolan.org Git - ffmpeg.git/rss log

avformat/argo_brp: cleanup 'goto fail's Signed-off-by: Zane van Iperen <zaneⓐzanevaniperen.com> [DH] libavformat/argo_brp.c
14:02
avformat/argo_brp: remove an allocation - Zane van Iperen git.videolan.org Git - ffmpeg.git/rss log

avformat/argo_brp: remove an allocation Signed-off-by: Zane van Iperen <zaneⓐzanevaniperen.com> [DH] libavformat/argo_brp.c
04:35
avformat/argo_asf: fix enforcement of chunk count - Zane van Iperen git.videolan.org Git - ffmpeg.git/rss log

avformat/argo_asf: fix enforcement of chunk count Enforcing num_chunks == 1 only makes sense when demuxing from an ASF file. When embedded in a BRP file, an ASF stream can have multiple chunks. Signed-off-by: Zane van Iperen <zaneⓐzanevaniperen.com> [DH] libavformat/argo_asf.c
17:24
dnn_backend_native_layer_conv2d.c: fix bug of loop boundary in single thread mode. - Xu Jun git.videolan.org Git - ffmpeg.git/rss log

dnn_backend_native_layer_conv2d.c: fix bug of loop boundary in single thread mode. Before patch, fate test for dnn may fail in some Windows environment while succeed in my Linux. The bug was caused by a wrong loop boundary. After patch, fate test succeed in my windows mingw 64-bit. Signed-off-by: Xu Jun <xujunzzⓐsjtu.edu.cn> Signed-off-by: Guo, Yejun <yejun.guoⓐintel.com> [DH] libavfilter/dnn/dnn_backend_native_layer_conv2d.c

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

23:59
Wrap audio data of the pcm_alaw type into an MKA audio file using the ffmpeg API - bbdd Newest 'ffmpeg' Questions - Stack Overflow

Imagine that in my project, I receive RTP packets with the payload type-8, for later saving this load as the Nth part of the audio track. I extract this load from the RTP packet and save it to a temporary buffer: ... while ((rtp = receiveRtpPackets()).withoutErrors()) payloadData.push(rtp.getPayloadData()); audioGenerator.setPayloadData(payloadData); audioGenerator.recordToFile(); ... After filling a temporary buffer of a certain size with this payload, I process this buffer, namely, extract the entire payload and encode it using (...) -- type-8, ffmpeg, Matroska, pcm_alaw, vlc, av_guess_codec(), All, this
23:13
Using ffmpeg to get video info - why do I need to specify an output file? - Redtopia Newest 'ffmpeg' Questions - Stack Overflow

I'm using ffmpeg to get info about a video file and I don't want to save the info into a file. ffmpeg is returning all the video info, but it's returning as an error because I'm not specifying an output file. The command I'm using is: ffmpeg -i C:\\Test\\3FA8D0E6-BD61-D160-98BB41304D63FAE3.mp4 The error I get is "At least one output file must be specified" I'm calling this in ColdFusion using , and the output is being stored in a local variable, which is why I don't want to specify a file... I just don't need to (...)
21:13
can we apply fecolor matrix in FFmpeg? - Dubey sai vithal teja Newest 'ffmpeg' Questions - Stack Overflow

Im using FFmpeg from 2 days. I learned how to add watermarks and mix audio and video . Is there a way to use recolor matrix to make video filters. Thanks
20:43
How to compress video size without changing much quality and without changing framerate (Ffmpeg)? - WebDiva Newest 'ffmpeg' Questions - Stack Overflow

I am using this command to compress my videos: ffmpeg -y -i video.mp4 -vcodec libx264 -crf 24 -preset ultrafast compressed.mp4 Although it works okay, there is a slight increase in duration because I am changing the framerate of videos, and we need the video to be the exact duration. Is there a way to compress videos without changing the framerate? any help would be appreciated. Thank you. Log: ffmpeg version git-2020-08-31-4a11a6f Copyright (c) 2000-2020 the FFmpeg developers built with gcc 10.2.1 (GCC) 20200805 configuration: --enable-gpl (...)
20:36
Speed up reading video frames from camera with Opencv - Tuyen Vo Quang Newest 'ffmpeg' Questions - Stack Overflow

Currently, i have my application implemented in Python to read camera frames via USB. I use Opencv, but for camera with 60fps and 1920x1080 resolution, i could not capture the this speed. I try something: cv2.VideoCapture(0, cv2.CAP_FFMPEG), but i could not the frames (capture read returns False). Could you please suggest any solutions or ways to improve the overall speed or even processing them in GPU. # Opencv 3.4.9 & Python 3.6.9 import cv2 capture = cv2.VideoCapture(0, cv2.CAP_FFMPEG) while True: ret, frame = capture.read() if ret: (...)
19:40
how to cut 2 seconds of video after each 10 seconds with ffmpeg? - ben_copper Newest 'ffmpeg' Questions - Stack Overflow

i have a long video which require to cut 2 seconds of video after each 10 seconds , how can i do that with FFMPEG ? I have tried video filter trim but it didn't cut video automatically after 10 seconds. Using -ss and -to option will require to create video parts and then concat them and it will take lot of time. Is there any Method in FFMPEG to do that. Thanks
04:50
How to concat 2 FLAC files using ffmpeg version 3.4.8 [duplicate] - Armstrong Soo Newest 'ffmpeg' Questions - Stack Overflow

I am trying to concatenate 2 flac files in Ubuntu via CLI. The first flac file is "mynameis.flac", which contains the audio of "My name is" and lasts 2.66 sec. The second flac file is "stt_VNFKEY.fac" that contains audio of a name that last 1.9 sec. After a successful concatenation, I expect the output "test.flac" should contain an audio of about 3.56 sec (2.66+1.9). However, the following command only yield the "mynameis" in the output. What do I need to do to concat both flacs? ffmpeg -i mynameis.flac -i stt_VNFKEY.flac test.flac ffmpeg version 3.4.8-0ubuntu0.2 (...)
18:07
Xcode 12: how to link against object files built for free standing - Jean-Michaël Celerier Newest 'ffmpeg' Questions - Stack Overflow

The issue is about linking x86_64 macOS executables statically against libavcodec, libavdevice, etc, which have some object files built against freestanding as they use YASM which isn't able to embed the macOS "tag" in the binary (see Building for macOS, but linking in object file built for free standing for detailed information on that issue). Everything works fine under Xcode 11.6 - the following messages are here, but they are warnings. With the Xcode 12 update they become an error. How to make them warnings again ? I could not find anything relevant in the ld man (...)
17:55
How is audio data stored in raw pcm format？ - Tian Ye Newest 'ffmpeg' Questions - Stack Overflow

I am writing an app to manipulate audio where i need to convert a file (wav, MP3, etc) to raw data (samples are presented as float) at the first place. I use ffmpeg in cmd: ffmpeg -i test.wav -f s16le -acodec pcm_s16le output.dat How are samples represented in the output.dat file? I know one sample needs two bytes under S16, and dual channel means it is stored as L1 R1 L2 R2 ... But does this file come with a frame presentation or all the byte in the dat file are sample values? The converted files' size of test.wav via two methods is not identical. (...)
17:46
How to merge subtitle files in one sami file - rush Newest 'ffmpeg' Questions - Stack Overflow

I want to make a multilanguage subtitle file from multi srt file what I mean is if I have en.srt ar.srt fr.srt I want to make subtitle.smi sami files can contain more than on subtitle and can choose any of them from video player I search for tool in command line or python script/library to do that

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

16:34
avfilter/vf_datascope: fix oscilloscope with gray>8 depth - Paul B Mahol git.videolan.org Git - ffmpeg.git/rss log

avfilter/vf_datascope: fix oscilloscope with gray>8 depth [DH] libavfilter/vf_datascope.c

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

15:15
ffmpeg: transcode over socket - user14258924 Newest 'ffmpeg' Questions - Stack Overflow

I am consuming multiple streams of h264 video and aac audio data in my own RTMP server and I want to transcode these streams into different codecs so I want to send these tracks, in chunks, into ffmpeg and get the transcoded result back. But due to performance requirements I want to use some kind of streaming where I can just open up a socket to get files in/out instead of dumping the data into individual files and then reading transcoded files back. Is it possible with (...)

Revisions : SPIP http://core.spip.org/projects/spip/activity

14:38
Evolution #4468: Unification des CSS pour les boutons et les icônes Revisions : SPIP

Bonjour, J'ai voulu tester. Et j'ai cette erreur : Fatal error: Uncaught Error: Call to undefined function ecrire_fichier_calcule_si_modifie() in C:\\laragon\\www\\spip33\\plugins-dist\\compresseur\\inc\\compresseur.php on line 302 ( ! ) Error: Call to undefined function ecrire_fichier_calcule_si_modifie() in C:\\laragon\\www\\spip33\\plugins-dist\\compresseur\\inc\\compresseur.php on line 302 Call Stack Time Memory Function Location 1 0.0004 430392 main( ) ...\\index.php:0 2 0.1314 8997432 exec_admin_plugin_dist( ) ...\\index.php:166 3 0.3552 11321248 inc_commencer_page_dist( ) ...\\admin_plugin.php:99 (...)

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

13:54
Convert ogg audio to wav in python without ffmpeg - Talha Anwar Newest 'ffmpeg' Questions - Stack Overflow

I am getting oga file from javascript blob and I want to convert it to PCM compatible wav file in python. The approach I am using is as follow AudioSegment.converter = r"C:/ffmpeg/bin/ffmpeg.exe" AudioSegment.ffprobe = r"C:/ffmpeg/bin/ffprobe.exe" sound = AudioSegment.from_file("file.oga") sound.export("file.wav", format="wav") For this I have to download ffmpeg locally. Is there any way to convert oga file to wave directly. This is how i am saving file f = open('./file.oga', (...)
13:07
stream FFMPEG clients on webserver [closed] - Pierre Newest 'ffmpeg' Questions - Stack Overflow

i tried to make a picture that sums up what i want to do. I hope you understand :) protocol operation please guide me the best of the best would be not to open ports ! clients sending their FFMPEG stream (h264) --> server who interprets them --> front-end which displays all the video streams (php nodejs..) Thanks x) -- protocol operation
11:36
How to batch process a directory of mp4 files to remove their metadata? - sd100 Newest 'ffmpeg' Questions - Stack Overflow

I convert one mp4 file using ffmpeg to remove all metadata from the mp4 file with the following command: ffmpeg -i test.mp4 -map_metadata -1 -c:v copy -c:a copy out.mp4 This works fine but I want a bash script that will automatically remove all metadata of a directory containing mp4 files, with minimum interaction. How can I do that?
11:12
Getting Error with node-media-serve and ffmpeg in heroku - Anurag Gautam Newest 'ffmpeg' Questions - Stack Overflow

I have created a MERN app with video streaming by using node-media-serve module, with following configuration trans: ffmpeg: '/vendor/ffmpeg', tasks: [] , ..... In local I have installed ffmpeg in trans.ffmpeg. and its working fine, But how we need to install ffmpeg in heroku . I have tried by adding heroku buildpacks heroku buildpacks:add https://github.com/jonathanong/heroku-buildpack-ffmpeg-latest.git but its showing me error. May be some issue with config only. Heroku error : 2020-09-16T11:23:54.292896+00:00 (...)
10:13
Increase volume on multiple files - Reckless Velociraptor Newest 'ffmpeg' Questions - Stack Overflow

Let say I have a couple of hundreds mp3 files. How do I increase volume in all of them with ffmpeg? This is for single file: ffmpeg -i input.mp3 -filter:a "volume=1.5" output.mp3 And what about multiple files with one command?

Revisions : SPIP http://core.spip.org/projects/spip/activity

09:53
Anomalie #4546: image_recadre perd l'EXIF de rotation - jluc - Revisions : SPIP

Le 19/07/2020, cerdic dit « On pourrait envisager que conserver les exifs à travers chaque filtre image, mais c’est aussi dangereux du point de vue des données personnelles. Je verrais plutôt un filtre qui permettrait de recopier certains exifs d’une image source sur l’image finale, sur le mode : [(#FICHIER|image_reduire…|image_recadre…|image_copie_exif#FICHIER,’author’)] (syntaxe exacte à définir) »

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

04:12
How can i stream through ffmpeg a canvas generated in Node.js to youtube/any other rtmp server? - DDC Newest 'ffmpeg' Questions - Stack Overflow

i wanted to generate some images in Node.JS, compile them to a video and stream them to youtube. To generate the images i'm using the node-canvas module. This sounds simple enough, but i wanted to generate the images continuously, and stream the result in realtime. I'm very new to this whole thing, and what i was thinking about doing, after reading a bunch of resources on the internet was: Open ffmpeg with spawn('ffmpeg', ...args), setting the output to the destination rtmp server Generate the image in the canvas Convert the content of the canvas to a (...)
03:50
Process video frame by frame with NodeJS - Michael Studebaker Newest 'ffmpeg' Questions - Stack Overflow

I want to be able to process a video frame by frame with NodeJS. I've looked at fluent-ffmpeg, but I don't think it supports processing the video frame by frame.

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

00:11
avformat/3dostr: Check remaining buffer in probe before 8 byte step - Michael Niedermayer git.videolan.org Git - ffmpeg.git/rss log

avformat/3dostr: Check remaining buffer in probe before 8 byte step Fixes: segfault Fixes: signal_sigabrt_7ffff6ae7cc9_7213_0d6457b9d6897fa7c78507fa5de53510.ts Regression since: 3ac45bf66561a667260cac37223c0393f7333fca Signed-off-by: Michael Niedermayer <michaelⓐniedermayer.cc> [DH] libavformat/3dostr.c

Recent posts

Preferences

Feeds

SPIP Compass

Sedna

26 September

25 September

24 September

23 September

22 September

21 September

20 September

19 September