151 posts

3 August

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

17:26
Condition to check if a command printed something to stdout - Jesse Hix Newest 'ffmpeg' Questions - Stack Overflow

I am trying to create a loop that will return pass or fail if something is printed to stdout using the command below. The command will print info to the screen if a video has audio and it will print nothing if it doesn't. Currently the loop only prints pass on both the audio and non audio files. Is there a way to set the condition to stdout and determine if something was printed? ffprobe -i INPUT -show_streams -select_streams a -loglevel error >/dev/null if [ $? == 0 ] then echo pass else echo (...)
17:17
ffmpeg best parameteres for fastest compression on FullHD mp4? - Mike Azatov Newest 'ffmpeg' Questions - Stack Overflow

I need to compress a bunch of FullHD(1920x1080, 3Gb, mp4) videos, each ~2 hrs long. Some loss of quality is okay as is the lower resolution. I'm shooting for a 500Mb output video in ~10 min processing time (2080TI Ryzen 9 3900X). It is important for the videos to be completely in sync, so frame x in the input video matches frame x in output. For this, I'm using -vsync 0 My current working settings which get me to ~500MB size in 20 minutes. ffmpeg -i input_fullhd.mp4 -vcodec libx265 -crf 28 -vsync 0 -vf scale=800:-1 -preset medium output.mp4 I'd like it to be (...)
17:15
wmv video; packet fragment position invalid; what does it mean and how to resolve it - gufidown Newest 'ffmpeg' Questions - Stack Overflow

I am trying to do some work on a wmv video file. I'm using ffmpeg and ffprobe. I'm getting the message: "packet fragment position invalid 0,0 not in 0". I am not familiar with video processing, quite a newbie actually. I didn't find an explanation what this exactly means and no hints on how to possibly resolve that problem. I am able to play the video using VLC media player as well as other players.
17:11
FFmpeg takes too much time for generating m3u8 files from a mp4 file (166MB) - Angele Newest 'ffmpeg' Questions - Stack Overflow

I am using ffmpeg in nodejs to generate 4 different resolutions (360p, 480p, 720p, 1080p). I use a AWS lambda for each resolution and the last two take too much time. I convert a mp4 file which has a size of 166MB into .ts files (with all segments associated) It takes more than 900 seconds, and that's above the limit for a lambda timeout. Also my goal is to encode mp4 videos of a maximum size of 4go... and it would be to encode within 900 seconds maximum for each resolution. I used this website to find some parameters: (...) -- https://docs.peer5.com/guides/production-ready-hls-vod/

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

07:05
avcodec/dnxhddec: check and propagate function return value - maryam ebr git.videolan.org Git - ffmpeg.git/rss log

avcodec/dnxhddec: check and propagate function return value Similar to CVE-2013-0868, here return value check for 'init_vlc' is needed. crafted DNxHD data can cause unspecified impact. Reviewed-by: Paul B Mahol <onemdaⓐgmail.com> Signed-off-by: James Almer <jamrialⓐgmail.com> [DH] libavcodec/dnxhddec.c

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

15:57
How to decrypt segmented parts .ts files which are encrypted with ffmpeg? - Yancey Newest 'ffmpeg' Questions - Stack Overflow

I use ffmpeg to generate encrypted m3u8 playlists, both generation and playing work perfectly. The statement I use to generate m3u8: ffmpg -i "source.mp4" -c:v h264_nvenc -sc_threshold 0 -g 48 -keyint_min 48 -hls_time 10 -hls_playlist_type vod -hls_key_info_file "d:\\enc.keyinfo" -hls_segment_filename "output_$03d.ts" "output.m3u8"; Content of d:\\enc.keyinfo: /enc.key d:\\enc.key 261daad184c6acf4a3a21393ds232e1a Now I need to decrypt one or more generated .ts segments (not the whole m3u8 playlist), what should I (...)
15:43
ffmpeg: nvidia gpu performance sub-optimal - david furst Newest 'ffmpeg' Questions - Stack Overflow

the problem seems fairly basic : i'd like to create thumbnails from incoming video in the shortest time possible, and i'm trying to do this by offloading processing to an nvidia gpu. while i run ffmpeg, i'm monitoring the gpu usage with the nvidia-smi utility. gpu usage never goes above 15% and the amount of time to encode the thumbnails with gpu is only 10% less than the time required without the gpu. these performance levels are very disappointing. my question : am i going about this the wrong way (and if so, how should i go about it), or is this gpu performance (...) -- nvidia transcoding guide
12:55
Python - why do I get this ffprobe error? - gasper101 Newest 'ffmpeg' Questions - Stack Overflow

I am on mac and am working on a project in which my program shoud convert a .mp3 file into a .wav file and than get text from that file (basic speech recognition). For converting a .mp3 file into a .wav file I am using ffmpeg library. I have installed both ffmpeg and ffprobe libraryies using pip and than using homebrew so I have them installed in a folder. This is my code: import speech_recognition from pydub import AudioSegment from os import path #get text from original voice file------------------------------------------------- sound = (...)
12:33
Batch mixing audio, given timestamps. Multiple offsets, only two sounds. How to do it efficiently? - Evil Newest 'ffmpeg' Questions - Stack Overflow

I have two stereo sounds, 1.wav and 2.wav, these sounds are less than 1 second long and list of timestamps (miliseconds from start of recording). Recording of pure video (recording.mp4) is several hours long and there are thousands (20 000 - 30 000) of timestamps per sounds. I want to convert list of timestamps and sounds into one recording, merging it with video. The part of merging audio with video is easy with ffmpeg, so this is not part of the question. The list of timestamps is tsv, for example: 1201\\t1.wav 1501\\t2.wav 1603\\t1.wav and so on, up to 50 (...)
10:29
Does LSB steganography permanently change the pixels of the image? - Jesse Hix Newest 'ffmpeg' Questions - Stack Overflow

When you encrypt an image using LSB steganography it alters a few of the pixels. My question is if say you input that image in a video using ffmpeg and re-encode the video plus the image will the pixels still be altered and be able to be decrypted or not?
09:37
Conversion of individual mp4 files to ts yields unexpected playback - MorenoGentili Newest 'ffmpeg' Questions - Stack Overflow

I'm converting three mp4 files (h264, no audio, each with a duration of three seconds) to the mpeg-ts format like so. ffmpeg -i 1.mp4 -c copy 1.ts ffmpeg -i 2.mp4 -c copy 2.ts ffmpeg -i 3.mp4 -c copy 3.ts Please note: I can't combine the mp4 files beforehand. Each one has to be converted individually as shown above since they're being generated by a live recorder. Then, I manually created a .m3u8 manifest like this one, so I could play those 3 ts files in (...) -- link to the three files and the manifest
08:31
Audio file could not be read as PCM WAV, AIFF/AIFF-C, or Native FLAC; check if file is corrupted or in another format - 陳昱廷 Newest 'ffmpeg' Questions - Stack Overflow

import os import speech_recognition as sr command = "ffmpeg -i videototext.mp4 videototext.mp3" os.system(command) commandwav = "ffmpeg -i videototext.mp3 videototext.wav" os.system(commandwav) AUDIO_FILE = "videototext.wav" r = sr.Recognizer() videototext = sr.AudioFile(AUDIO_FILE) with videototext as source: audio = r.record(source, duration=100) print(type(audio)) print(r.recognize_google(audio)) above is my code,then the error is: Audio file could not be read as PCM WAV, AIFF/AIFF-C, or (...)
08:14
cover image not adding to mp3 using ffmpeg - Rajkumar Maity Newest 'ffmpeg' Questions - Stack Overflow

The cover image is not adding to the mp3 file Here is my code : shell_exec("ffmpeg -y -i ./tmp/tmp -i ./cover.jpg -map 0:0 -map 1:0 -metadata title=" . escapeshellarg($title) . " -metadata artist='Tuneraja.com' -metadata album='' -metadata year='' -metadata publisher='Tuneraja.com' -metadata copyright='respected owner' -vn -ar 44100 -ac 2 -b:a 64k -filter:a 'volume=1.0' ./tmp/" . escapeshellarg($fileTitle) . ".mp3 2>&1"); create_mp3($title, $duration, 0, "./tmp/$fileTitle.mp3", (...)
02:10
When downloading HLS video with FFMPEG it does not download the audio - Thiago Franklin Newest 'ffmpeg' Questions - Stack Overflow

I have a problem, when I try to download an HLS video with FFMPEG, it downloads the video track, but it doesn't find the AUDIO. When running the HLS .m3u8 file in a player, it plays normally, audio and video, but when trying to download, it shows an error message saying that the audio cannot be found. I'm running the following command: ffmpeg.exe -i "https://teste-etv.espiritismo.tv/437602.m3u8" -codec:a libmp3lame -b:a 96k teste-hls.mp3 Displays the following error when trying to download the audio: [hls ⓐ 0000021b5d9ad940] Skip (...)
00:13
FFMPEG wrapping live h264 to mp4 container delay - Emil Borconi Newest 'ffmpeg' Questions - Stack Overflow

Sorry if this has been asked but I couldn't find the answer. I'm trying to wrap a live raw h264 stream to a fragmented MP4 container. This is working as expected, with one issue, I have a 5-10 seconds delay between the input and output. Basically the output start after 5-10 seconds of the first input received. This is my command: ffmpeg -r 30 -f h264 -i tcp://127.0.0.1:1234 -c:v copy -an -f mp4 -movflags separate_moof+empty_moov+default_base_moof -tune zerolatency -tcp_nodelay true -frag_duration 33000 -max_muxing_queue_size 1 (...)

2 August

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

17:48
How to configure FFmpeg in windows? [closed] - GrassWarlock Newest 'ffmpeg' Questions - Stack Overflow

Hey there i'm not very tech savvy. when i invoke this command: ffmpeg -i input.mp4 -i subtitles.srt -map 0 -map 1 -c copy -c:v libx264 -crf 23 -preset veryfast output.mp4 ( which is supposed to overlay 'input.mp4' with subtitles from 'subtitle.srt' ) i get the following output: ffmpeg version 2021-07-27-git-0068b3d0f0-full_build-www.gyan.dev Copyright (c) 2000-2021 the FFmpeg developers built with gcc 10.3.0 (Rev5, Built by MSYS2 project) configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads (...)
23:15
extract date and LUFS from a file with script - sJoss Newest 'ffmpeg' Questions - Stack Overflow

I am using for i in *.mp4; do echo "$i:"; ffmpeg -i "$i" -map 0:a -af ebur128=framelog=verbose -f null - 2>&1 | awk '/I:/print $2'; done to extract LUFS and then using for i in *.mp4; do ffprobe -v quiet -select_streams v:0 -show_entries format=filename:stream_tags=creation_time -of default=noprint_wrappers=1:nokey=1 "$i"; done to extract date of creation of mp4 files. How can I have those both command as a sequence or a script file so that I run the command only once, and I get both of those command run. I want to get the output (...)
22:53
Stream images from python openCV with ffmpeg - Max D. Newest 'ffmpeg' Questions - Stack Overflow

In order to try an embedded AI, I want to stream an image dataset through a rtsp stream. What I tried to do is to read one image every X seconds and send it to the stream and infere my AI on it. I tried to use this github repo :https://gist.github.com/takidog/2c981c34d5d5b41c0d712f8ef4ac60d3#file-main-py This is what I tried so far : import cv2 import time import subprocess as sp import glob, os __PATH = "./DATASET" os.chdir(__PATH) IMG_LIST = glob.glob("*.jpg") IMG_LIST_LEN = len(IMG_LIST) IMG_INDEX = 0 IMG_DELAY (...) -- https://gist.github.com/takidog/2c981c34d5d5b41c0d712f8ef4ac60d3#file-main-py
21:24
Adding frames to gifs using FFMPEG - John Smith Newest 'ffmpeg' Questions - Stack Overflow

I have the following code for /f %%i in ('dir /b /a-d %script_id%_tmp_img_*1.png') do ( ffmpeg -y -v error -i %%i -i %script_id%_tmp_blank_frame.png -filter_complex "overlay" overlayed_%%i del %%i ) It currently Adds a overlay image frame at every 10th frame EX , 1,11,21,31 ect ect anything that ends in *1 any advice how i would change this so instead it adds 8 overlay frames before the gif then 1 after the gif instead? Any help would be great i am super stuck thanks (...)
20:43
Mixing audio, given timestamps. How to do it efficiently? - Evil Newest 'ffmpeg' Questions - Stack Overflow

I have two stereo sounds, 1.wav and 2.wav, these sounds are less than 1 second long and list of timestamps (miliseconds from start of recording). Recording of pure video (recording.mp4) is several hours long and there are thousands (20 000 - 30 000) of timestamps per sounds. I want to convert list of timestamps and sounds into one recording, merging it with video. The part of merging audio with video is easy with ffmpeg, so this is not part of the question. The list of timestamps is tsv, for example: 1201\\t1.wav 1501\\t2.wav 1603\\t1.wav and so on, up to 50 (...)
22:28
ffmpeg keyframe control on single image + audio - user3190036 Newest 'ffmpeg' Questions - Stack Overflow

I have scoured every related stackoverflow question I can find and none of them solved the issue, apologies in advance if I missed the one that would have worked. The application I am working on converts a video or audio file to an mp4, and later on the server to an hls playlist. I just implemented audio and I wanted a background image. After reading through various options on stackoverflow I settled on the following args: y -i "C:\\path\\ExternalAudioBackground.png" -i "C:\\path\\Audio.mp3" -vf scale=1280:720:force_original_aspect_ratio=decrease,pad=1280:720:-1:-1:color=black -c:a (...) -- https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-4.3.3.1

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

18:50
How to enable libx264 for FFmpeg on Elastic Beanstalk - user15575918 Newest 'libx264' Questions - Stack Overflow

My question is very similar to that of this person, but the suggested answer did not work for me. Using the following ffmpeg.config file in .ebextensions I am able to install ffmpeg, but without the libx264 codec. packages: yum: autoconf: [] automake: [] cmake: [] freetype-devel: [] gcc: [] gcc-c++: [] git: [] libtool: [] make: [] nasm: [] pkgconfig: [] zlib-devel: [] sources: /usr/local/src: http://ffmpeg.org/releases/ffmpeg-4.4.tar.bz2 commands: ffmpeg_install: cwd: (...)

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

19:01
"Uncurve" Cinerama-like videos - silent Newest 'ffmpeg' Questions - Stack Overflow

I'm pretty new to ffmpeg and I recently found interesting videos that are trying to simulate the Cinerama technology back from 1950x by curving the final video. Here is the screenshot how it looks like during the playback: I was wondering if it's possible to make this kind of picture back to "normal" rectangular shape? Here's a small (30 seconds, 48MB) example of how it looks like: https://ufile.io/8b0139j0 Thanks! -- Cinerama technology, , https://ufile.io/8b0139j0
17:36
conflicting of headers between ffmpeg and s3 - Juliette Newest 'ffmpeg' Questions - Stack Overflow

I have the code below in my server.js file for a web app that uses express for the backend and a built create react app that it serves. require('rootpath')(); const path = require('path'); const express = require('express'); const app = express(); const bodyParser = require('body-parser'); const cookieParser = require('cookie-parser'); const cors = require('cors'); app.use(bodyParser.urlencoded( extended: false (...)
17:26
Is there a way to parse Hevc rtsp packets and find height and width in c++ application - dinesh47 Newest 'ffmpeg' Questions - Stack Overflow

I have written a C++ application with processing of RTP video and Audio packet(Bitstream packets) but can't able to find a way to get height and width from VPs,SPs or PPs from every keyframe. Note:I am using only pure c++ codes until encoding and writing the file part with ffmpeg lib Need to know How to Extract it from that extra data for Memcopy it to add with start code. Need to find Height and width with it(Parsing). i have Written in case like the folowing: byte *packet=&*(frameData); int size =ptr->m_size; boost::shared_ptr (...)

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

14:40
packet: initialize time_base field to (0, 1) instead of (0, 0) - Lynne git.videolan.org Git - ffmpeg.git/rss log

packet: initialize time_base field to (0, 1) instead of (0, 0) Forget rational or irrational numbers, division by zero is undefined. [DH] libavcodec/avpacket.c

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

14:51
Targeting a specific file size in vp8+vorbis encoding using ffmpeg - Mohammad Zamanian Newest 'ffmpeg' Questions - Stack Overflow

I have a couple videos that I want to encode to vp8 for video and Vorbis for audio. This is the FFmpeg command I'm currently using: ffmpeg -y -i input.mp4 -map 0:v:0 -s 640x360 -filter:v fps=20 -c:v libvpx -crf 10 -b:v 200k -map 0:a:0 -b:a 48k -c:a libvorbis output.webm I want to have control over output file size and limit it to 3MB without clipping the video, but instead, lose quality. so I cant use -fs 3MB. How can I determine the file size based on video and audio bitrates and duration? How can I limit the file size without (...)

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

14:00
lavd/lavfi.c: Set time_base for 608 cc to container time_base. - Yun Zhang git.videolan.org Git - ffmpeg.git/rss log

lavd/lavfi.c: Set time_base for 608 cc to container time_base. Suggested-By: ffmpegⓐfb.com [DH] libavdevice/lavfi.c [DH] tests/ref/fate/sub-cc [DH] tests/ref/fate/sub-cc-realtime

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

13:57
What is the fastest method to compress videos before sending in React Native Chatting app - Jawad Chawich Newest 'ffmpeg' Questions - Stack Overflow

So my question is mainly in the title, I'm working on a chatting app and I have to compress the videos before sending to the database (firebase storage). All I could find till now is ffmpeg, but the issue is that it's taking tremendous amount of time to compress videos, for a 10 sec video it would take like a minute, and i was astonished how fast it's done in whatsapp.. so is there any other method to compress videos faster? Or does changing the ffmpeg command make an acceptable difference? the currently used command is "-y -i $rVideoUrl -c:v libx264 -crf 28 -preset (...)
13:46
Where are there working exdamples for QSV enabled ffmpeg filters? - Bart Lederman Newest 'ffmpeg' Questions - Stack Overflow

I'm re-posting this question in a modified form because I'm told that stack overflow doesn't allow anyone to ask for the location of documentation. So now I'm not asking for documentation, I just want working examples of how the QSV enabled filters are used, with a specific question on why async doesn't work with vpp_qsv . I have a PC running Windows which is QSV capable. I've found the codec and at least one QSV filter which really speed up decoding and encoding AVC (x264) videos. But the experience is extremely aggravating, as I cannot find a list (...) -- https://github.com/FFmpeg/FFmpeg/blob/master/libavfilter/vf_vpp_qsv.c
12:47
How can I improve the frame rate of my Raspberry Pi to YouTube stream? - RDowns Newest 'ffmpeg' Questions - Stack Overflow

I am using a Raspberry Pi 4 2GB to live stream to YouTube. The performance is pretty poor at the moment as I am trying to go through terminal and I feel the setting's are not correct. Performance is OK however if I go directly through YouTube studio and use the 'Webcam' option instead of 'Stream'. These are the settings that I am currently using: raspivid -o - -t 0 -vf -hf -fps 30 -b 6000000 | ffmpeg -threads 0 -f v4l2 -i /dev/video0 -ar 44100 -ac 2 -acodec pcm_s16le -f s16le -ac 2 -i /dev/zero -acodec aac -ab 128k -strict experimental -s 640x480 -b (...)
12:02
How text align text filter in ffmpeg with multi line text - Konduri Sai Aditya Newest 'ffmpeg' Questions - Stack Overflow

how text align center, right , left positions with drawtext with multi line as input. "Hello \\n world"
11:58
How to use ffmpeg with drawtext and a emoji TTF - morrislaptop Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to overlay some text emoticons on top of a video using ffmpeg.. This works fine for normal TTF's e.g. ffmpeg -i video.mp4 -vf drawtext="Arial.ttf: text='YENTL
07:45
Remove Static Pixels from a Video to Mimic a Green Screen Effect [closed] - nKrkan Newest 'ffmpeg' Questions - Stack Overflow

I have a video that's 50 seconds in length, resolution of 480x480 and 16 frames per second. There is a person talking in it, with the background being static I thought if there's a way to remove those static pixels (background) and just extract the moving pixels (foreground) and possibly mimic a green screen effect? I was thinking on writing a picture-by-picture comparison tool to do such thing but I don't believe I'm up to the task, or maybe It's laziness. And now I know, some of you will point out that the video has compression (...)
09:35
FFMPEG- Convert video to images - hack Newest 'ffmpeg' Questions - Stack Overflow

how can i convert a video to images using ffmpeg? Example am having a video with total duration 60 seconds. I want images between different set of duration like between 2-6 seconds, then between 15-24 seconds and so on. Is that possible using ffmpeg?
08:49
converting hls livestream to rtmp - dedshit Newest 'ffmpeg' Questions - Stack Overflow

i'm new to ffmpeg Is it possible to convert hls livestream into rtmp (facebook) eg: hls into rtmp is this even possible ? sorry moderators for my bad grammer forgive me -- hls
03:22
FFmpeg convert .mov to .ogv - Morten Hauberg Newest 'ffmpeg' Questions - Stack Overflow

I have some troubles converting my .mov to a .ogg file using FFmpeg. This command should work, right? ffmpeg -i test.mov -s 640x320 -vcodec libtheora -acodec libvorbis out.ogv It gives me this output [0] => FFmpeg version SVN-r0.5.9-4:0.5.9-1, Copyright (c) 2000-2009 Fabrice Bellard, et al. [1] => configuration: --extra-version=4:0.5.9-1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libdirac --enable-libgsm --enable-libopenjpeg --enable-libschroedinger --enable-libspeex --enable-libtheora (...)
00:38
Fastest way to extract frames using ffmpeg? - Stpn Newest 'ffmpeg' Questions - Stack Overflow

Hi I need to extract frames from videos using ffmpeg.. Is there a faster way to do it than this: ffmpeg -i file.mpg -r 1/1 $filename%03d.jpg ?

1 August

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

16:38
ffmpeg filter to make video rectangular/square - MiGu3X Newest 'ffmpeg' Questions - Stack Overflow

So, I've been trying for a while To convert this videos I have to a more "squared" way, so it doesn't look circular as they are being recorded. An example image of the video is the following: I've been trying using lenscorrection filter with ffmpeg attempting to convert that image into something like I could do in photoshop to something like this: But it seemed impossible. I've got information that the camera has a lens of 1.77 mm with focal length F2.4 I don't know a lot about cameras that's why I couldn't understand which (...) -- ,
16:09
FFMPEG: How to not loose quality when increasing the volume of MP3 file? - user7858768 Newest 'ffmpeg' Questions - Stack Overflow

When increasing the volume of MP3 file (re-encoding the file to have higher volume) using the following command: ffmpeg -y -i /tmp/input.mp3 -af volume=2 -ab 48k /tmp/output.mp3 When volume increase (volume=2) is below 2 (below 200%) the audio quality sounds clean. However, when the audio is increased past 2, example: volume=3 there are distortions that can be heard. The bitrate of the original file is 48k (hence I am setting it to 48k otherwise ffmpeg drops output bitrate to 32k) Are there any settings that can be set to avoid distortions from appearing when (...)
08:57
How to burn subtitle .vtt to .mp4 in Mac from terminal via ffmpeg? - Kali89 Newest 'ffmpeg' Questions - Stack Overflow

While running this in my mac the resultant video does not include audio. Where am I going wrong?? ffmpeg -i movie.mp4 -vf subtitles=subtitle.vtt mysubtitledmovie.mp4
01:45
Audio issues when overlaying two videos (ffmpeg) - crashyourtesla Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to overlay a short 10 second video on top of a 2 minute video and have the 10 second video show up at the 30 second mark. Here is what I have so far start = 30 subprocess.run( f'ffmpeg -y \\ -i os.path.join(path, "2minutevideo.mp4") \\ -i os.path.join(path, "popup.mov") \\ -filter_complex \\ "[0:v]setpts=PTS-STARTPTS[v0]; \\ [1:v]setpts=PTS-STARTPTS+notify_start/TB[v1]; \\ [v0][v1]overlay=enable=\\'between(t, notify_start, notify_start + get_duration(os.path.join(path, "popup.mp4")))\\' [out1]" \\ render_flags (...)

31 July

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

22:48
Zoom effect based on audio levels using ffmpeg - FOLLGAD Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to create a zoom-in/shake effect based on how loud the audio stream's bass is. I've realized you can use showcqt to get a graph of the sound, but I can't figure out how to pipe that to some zoom function to do zoom based on that. Any ideas?
18:52
Pro ffmpeg join to me - Stefani Newest 'ffmpeg' Questions - Stack Overflow

for anyone who understand with ffmpeg code help me, I need a code that can zoom in and out a video every 5-10 seconds, and delete 10-15 seconds a video every 15 seconds, this command can only be used easily in ffmpeg, and requires code. thank you
16:36
ffmpeg on the fly switch video from rtsp stream - John Williamson Newest 'ffmpeg' Questions - Stack Overflow

I have a nest doorbell which provides a video stream via rtsp but for security the url is valid for just 4 minutes at which point a new url is provided i.e. 15:25 - rtsps://stream-eu1-delta.dropcam.com:443/sdm_live_stream/CiQA2..... 15:29 - rtsps://stream-eu1-delta.dropcam.com:443/sdm_live_stream/vY8pB..... I'm able to play the individual streams to a rtsp-simple-server using ffmpeg -nostdin -i rtsps://stream-eu1-delta.dropcam.com:443/sdm_live_stream/CiQA2.... -q:v 1 -f rtsp rtsp://localhost:8554/live But is there any way to switch to the latest url on (...)
15:01
How to stream a video from localhost to web browser using video tag? - kup Newest 'ffmpeg' Questions - Stack Overflow

Basically what i want to stream a video to my browser both on localhost, using flask and opencv or ffmpeg. But not sure how to do it. i tried this: #!/usr/bin/env python from flask import Flask, render_template, Response import cv2 import sys import numpy app = Flask(__name__) def get_frame(): c=cv2.VideoCapture("output.mkv") while True: retval, im = c.read() imgencode=cv2.imencode('.jpg',im)[1] stringData=imgencode.tostring() yield (b'--frame\\r\\n' b'Content-Type: (...)
14:55
How can I speed up Raspberry Pi to YouTube stream? - RDowns Newest 'ffmpeg' Questions - Stack Overflow

I am using a Raspberry Pi 4 2GB to live stream to YouTube. The performance is pretty poor at the moment as I am trying to go through terminal and I feel the setting's are not correct. Performance is OK however if I go directly through YouTube studio and use the 'Webcam' option instead of 'Stream'. These are the settings that I am currently using: raspivid -o - -t 0 -vf -hf -fps 30 -b 6000000 | ffmpeg -threads 0 -f v4l2 -i /dev/video0 -ar 44100 -ac 2 -acodec pcm_s16le -f s16le -ac 2 -i /dev/zero -acodec aac -ab 128k -strict experimental -s 640x480 -b (...)
13:20
How to de-warp 180 degree or 360 degree fisheye video with ffmpeg? - John Allard Newest 'ffmpeg' Questions - Stack Overflow

Let's say I have video from an IP-camera that has a 180 degree or 360 degree fisheye lens and I want to dewarp the image in some way. Ideally I would be able to select some rectangular area of the input image and dewarp that into a "normal" looking output video, but it would also be acceptable to dewarp the the video into some sort of Equirectangular or Equi-Angular Cubemap projection. The input video looks like this I'm aware of two filters that might be used for this lenscorrect filter - I think that this is on the right course but all of (...) -- , ,
12:40
how to convert rtmp stream to video file using ffmpeg? - kup Newest 'ffmpeg' Questions - Stack Overflow

I am trying to convert a rmtp stream to a video file using ffmpeg but keep getting error: rtmp://localhost:1935/live/app: Broken pipe on using: ffmpeg -i rtmp://localhost:1935/live/app -acodec copy -vcodec copy test.mp4 streaming using ffmpeg as: ffmpeg -i ./video.mp4 -c copy -f flv -listen 1 -flvflags no_duration_filesize rtmp://localhost:1935/live/app
11:32
ffmpeg, stereo + 5.1 surround, and YouTube's "Recommended upload encoding settings" - CoreyVidal Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to make sense of something YouTube has listed on their recommended upload encoding settings for the best possible quality. Here's the link: https://support.google.com/youtube/answer/1722171#zippy=%2Caudio-codec-aac-lc Specifically this line: Channels: Stereo or Stereo + 5.1 I'm Googling for "Stereo + 5.1" and anything to do with ffmpeg but I can't seem to find much of anything. I have trailers with surround audio I need to export for a client for (...) -- https://support.google.com/youtube/answer/1722171#zippy=%2Caudio-codec-aac-lc
11:00
How to Resize Video 720:1280 Bigger Height, Width and Crop To 1280:720 using ffmpeg? - ChhengRavy Newest 'ffmpeg' Questions - Stack Overflow

I have video Original size 720:1280 and want to convert it to size 1280:720 but before converting I want to increase it bigger first. Using Code Below, I can resize the video to 1280:720 but it is not the result that I want. ffmpeg -i input.mp4 -filter_complex scale=1280:720:force_original_aspect_ratio=decrease,pad=1280:720:-1:-1:color=black output.mp4 This is what I want to get. Please Help Me To solve the problem. Your answer is so important to me. Thank you so much. I am waiting your reply. (...) -- , ,
09:13
ffmpeg - extract multi-line subtitles - Schalk Burger Newest 'ffmpeg' Questions - Stack Overflow

I'm extracting a subtitle using: ffmpeg -i input.mkv -map 0:4 outsub.ass It works fine at first glance: Dialogue: 0,0:02:46.24,0:02:47.88,Default,,0,0,0,,y que eliminamos por la orina. Dialogue: 0,0:02:48.20,0:02:50.24,Default,,0,0,0,,ﾂｿQuﾃｩ le has estado preguntando Dialogue: 0,0:02:50.28,0:02:52.88,Default,,0,0,0,,Como tenemos aquﾃｭ Dialogue: 0,0:02:52.92,0:02:55.76,Default,,0,0,0,,que es una enciclopedia, Dialogue: 0,0:02:55.80,0:02:58.56,Default,,0,0,0,,cuando comemos espﾃ｡rrago The problem is that the actual subtitle is this: screenshot (...) -- screenshot showing two lines of subtitle
07:06
How to use xstack correctly in ffmpeg-python? - kup Newest 'ffmpeg' Questions - Stack Overflow

For creating xstack i am using this command: vout = ffmpeg.filter( [v0.video, v1.video, v2.video, v3.video], 'xstack', inputs=4, layout='0_0|w0_0|0_h0|w0_h0') I am getting this: [0:v][1:v][0:v][1:v]xstack=inputs=4:layout=0_0|w0_0|0_h0|w0_h0 instead of this: [0:v][1:v][2:v][3:v]xstack=inputs=4:layout=0_0|w0_0|0_h0|w0_h0

30 July

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

21:25
Create PNG from video with ffmpeg and force_original_aspect_ratio - resulting PNG is squashed to sample_aspect_ratio (instead of display_aspect_ratio) - Jason Barnabe Newest 'ffmpeg' Questions - Stack Overflow

I have a generic process whose purpose is to take a video at any aspect ratio and generate a PNG from one of its frames. This frame should: Be as large as possible, but no larger than 720x405 (16:9) Maintain the aspect ratio of the video Have no letterboxing ffmpeg -y -nostats -ss 10 -i ./video.mp4 -max_muxing_queue_size 6400 -an -frames:v 1 -r 24/1 -vf "scale=w=720:h=405:force_original_aspect_ratio=decrease" -f image2 ./frame.png When I give this command a video with a sample_aspect_ratio (SAR) of 4:3 and a display_aspect_ratio (DAR) of 16:9, I end up (...)
20:05
ffmpeg: speed up AND rotate video - LFPGaming Newest 'ffmpeg' Questions - Stack Overflow

This is my current script that I'm trying to use to speed up the playspeed and rotate my video by 90', but it doesn't work when I include the transpose=1 argument. "C:\\ffmpeg-win64\\bin\\ffmpeg.exe" -i "C:\\video1.mkv" -vf "setpts=PTS/60" "transpose=1" -an -crf 18 "C:\\video2.mkv" Script works without the transpose argument and speeds up my video perfectly, but Script won't run once I try to rotate the video by 90' and outputs an error: Unable to find a suitable output format for 'transpose=1' transpose=1: Invalid argument Can (...)
19:58
Is it possible to compression and scaling in single command using ffmpeg? - Nikunj Chaklasiya Newest 'ffmpeg' Questions - Stack Overflow

I used this command for Image compression: "ffmpeg -hide_banner -i in.png -pix_fmt pal8 -vf dctdnoiz=4.5 -y out_2.png" and this command for scaling: "ffmpeg -i 1.png -vf scale=250:250 output_250x250.png" I'm new to FFmpeg and I have tried my first and second command in FFmpeg. I tried the below command. ffmpeg -hide_banner -i in.png -pix_fmt pal8 -vf scale=250:250 dctdnoiz=4.5 -y out_2.png But, It's not working and outputs this error: [NULL ⓐ 0x562190cf5140] Unable to find a suitable output format for (...)
19:51
Animated Webp - change framerate - Robert Newest 'ffmpeg' Questions - Stack Overflow

Is there any tool or script for batch converting animated webp images? I want to create animated thumbnails from my animated webp images: resize image size reduce quality (lossy compression) reduce frame rate I tried tools like ImageMagick, but they cannot change the frame rate. -- ImageMagick
19:09
ValueError: Encountered hstack() with multiple outgoing edges with same upstream label None; a `split` filter is probably required - kup Newest 'ffmpeg' Questions - Stack Overflow

I want to stack multiple videos at a time at the screen "more or less like zoom show multiple screens of users" but unable to do so and met with an error: The approach i took: aout = /*got audio*/ vout0 = ffmpeg.filter( [v1, v2], 'hstack') vout1 = ffmpeg.filter( [v3, v4], 'hstack') vout = ffmpeg.filter([vout0.video, vout1.video], 'vstack') ( ffmpeg .output(aout, vout, "out.mkv") .run() ) ValueError: Encountered hstack() with multiple outgoing edges with same upstream label None; a split (...)
19:00
FFmpeg - Is It Possible To Cut Video Stream According to its SSIM Value - user4134414 Newest 'ffmpeg' Questions - Stack Overflow

I have a video stream with a certain constant event happening from time to time. For example, a traffic light turning green. I would like to cut a few seconds of the video every time the event happens (continuing the example, cars start moving). I managed to use a predefined image and SSIM to detect the event (in the SSIM log file), but I cannot find a way to cut the stream in real time according to its SSIM value. Any help would be appreciated.
18:34
OCI runtime exec failed: exec failed: (...) executable file not found in $PATH": unknown - Uğur Kaya Newest 'ffmpeg' Questions - Stack Overflow

I have dockerized an app which has ffmpeg installed in it via libav-tools. The app launches without problem, yet the problem occured when fluent-ffmpeg npm module tried to execute ffmpeg command, which was not found. When I wanted to check the version of the ffmpeg and the linux distro set up in the image, I used sudo docker exec -it c44f29d30753 "lsb_release -a" command, but it gave the following error: OCI runtime exec failed: exec failed: container_linux.go:296: starting container process caused "exec: \\"lsb_release -a\\": executable file not found in $PATH": unknown Then I (...)
16:56
Create a constant fragment duration for audio (AAC) MP4 Tracks [duplicate] - Mahmoud Khudairi Newest 'ffmpeg' Questions - Stack Overflow

I want to create a fragmented audio mp4 file using FFMPEG with a constant length (for example: 10 seconds) Using -frag_duration and -min_frag_duration isn't accurate unlike using -force_key_frames for video tracks This is sidx atom for my audio stream And this is sidx atom for my video stream -- ,
16:08
Can't get FFMPEG buildpack working in Heroku Node.js server (using Fluent-FFMPEG) - Rayhan Memon Newest 'ffmpeg' Questions - Stack Overflow

I'm using a library called 'fluent-ffmpeg' on my Nodejs server that makes it easier to use an audio/video editing tool called FFmpeg, which is downloaded locally on my computer. When running on my computer, I point fluent-ffmpeg to the local executable files of FFmpeg and FFprobe on my computer, like so: import ffmpeg from "fluent-ffmpeg"; // When running locally, set FFmpeg and FFprobe path to the local executable files ffmpeg.setFfmpegPath("C:/Program Files/FFMPEG/ffmpeg.exe"); ffmpeg.setFfprobePath("C:/Program (...) -- https://github.com/jonathanong/heroku-buildpack-ffmpeg-latest, https://github.com/HasibulKabir/heroku-buildpack-ffmpeg-ffprobe

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

13:38
avcodec/noise_bsf: restore dropamount for backwards compatibility - Gyan Doshi git.videolan.org Git - ffmpeg.git/rss log

avcodec/noise_bsf: restore dropamount for backwards compatibility [DH] doc/bitstream_filters.texi [DH] libavcodec/noise_bsf.c [DH] tests/fate/matroska.mak

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

11:59
How to play an overlay video in loop using ffmpeg-python? - kup Newest 'ffmpeg' Questions - Stack Overflow

I want to play an overlay video in infinite loop until the video ends. I have tried the below command but this doesn't seem to work: video = video.overlay(overlay_file, x=0, y=0, eof_action='repeat') ( ffmpeg .output(video, "out.mkv") .run() )
10:36
ffmpeg convert 2tb of video from dropbox on EC2 instance - Misha Newest 'ffmpeg' Questions - Stack Overflow

My dropbox account is full and I need to convert from uncompressed video to mpeg-4 format. I´ve used ffmpeg for this earlier and the compression works quite fine and provides an impressive file reduction allowing for reasonable quality. All my video files are stored in my dropbox account in multiple folders each having 5-20 uncompressed files of approx 1-2 Gb each that I stich together and generate a final file (1-10hrs long) for each folder. Previously I´ve downloaded each folder to my local harddrive and done the conversion locally, but it takes a long time. I can set up my (...)
10:05
How to continue saving to an existing m3u8 playlist using ffmpeg - kidox Newest 'ffmpeg' Questions - Stack Overflow

I'm using nginx rtmp module to run a live streaming server that encodes a rtmp stream to a hls playlist. Is there a way to continue with an existing m3u8 file instead of creating a new playlist when I start ffmpeg? Streams can be disconnected sometimes and I want to keep a single playlist when a user resumes streaming. Here's ffmpeg command I'm running: ffmpeg -i rtmp://localhost/live/$name -c:v libx264 -x264opts keyint=60:no-scenecut -s 720x1280 -r 30 -b:v 2000k -profile:v high -preset veryfast -c:a libfdk_aac -sws_flags bilinear -hls_list_size 0 (...)

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

09:24
avfilter/avf_showfreqs: switch to TX FFT from avutil - Paul B Mahol git.videolan.org Git - ffmpeg.git/rss log

avfilter/avf_showfreqs: switch to TX FFT from avutil [DH] configure [DH] libavfilter/avf_showfreqs.c

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

09:47
How to add overlay video with opacity and run in loop using ffmpeg-python? - kup Newest 'ffmpeg' Questions - Stack Overflow

I am trying the below code: in0 = ffmpeg.input('left.mkv') in1 = ffmpeg.input('right.mkv') aout = ffmpeg.filter([in0.audio, in1.audio.filter('adelay', "5000|5000")],'amix') vout = ffmpeg.filter([inv0.video, inv1.video.filter('tpad', start_duration=5, start_mode='add', color='black')], 'hstack') overlay_file = ffmpeg.input(overlay).filter('scale', 1280, 720, force_original_aspect_ratio='decrease') vout = vout.overlay(overlay_file, x=0, y=0) ( (...)
09:34
NodeJs watch file Chokidar and create Thumbnail with FFMPEG, Code is hanging. Memory jam? - Mert Newest 'ffmpeg' Questions - Stack Overflow

I'm trying watch file Chokidar. Mp4 files in Folder. And I'm trying watch folder with create thumnail. But My code is hanging. It's getting stuck. I'm waiting ten min but i didnt get error and my code worked more little. Again, I'm waiting more ten min. But no change anything. Code: let fs = require('fs'); var chokidar = require('chokidar'); const ffmpegInstaller = require('ⓐffmpeg-installer/ffmpeg'); const ffmpeg = require('fluent-ffmpeg'); ffmpeg.setFfmpegPath(ffmpegInstaller.path) var (...)
06:03
Recording livestream from m3u8 to pipe using ffmpeg results in video with no audio - jcvamp Newest 'ffmpeg' Questions - Stack Overflow

I'm not very good with ffmpeg, so this code is something I've created through trial and error. I'm using ffmpeg from VB.net with the arguments: Dim CL As String = "-y -i " & Chr(34) & URL & Chr(34) & " -t " & Time & " -acodec copy -vcodec copy -f mpeg pipe:pipe1" The videos end up having no audio. I tried removing '-acodec copy' and '-vcodec copy' and using '-map 0', which creates a video with audio, but the quality is substantially lower. I'd like to retain the quality and still have (...)
06:03
How is better to use ffmpeg with the ASP.NET Core, on Linux? - user8245660 Newest 'ffmpeg' Questions - Stack Overflow

I've got the project (ASP.NET Core, on Linux) where are the several tasks, which relate to the video converting and extracting frames from the video file. I thought about the two possible options: using ffmpeg console utility using P/Invoke with the libavcodec library and others, which ffmpeg uses The second option is miles harder and may be very impractical, because it reminds me developing the new wrapper/library, instead of using the ready products. I've done googling, but there aren't well-done projects for the (...)
04:12
moviepy write_videofile giving error on remote host - HadiH2o Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to put a logo on a video using the moviepy module This module works properly on my PC(windows) but gives an error when I run the following code on the remote host I bought(linux). code : import random import moviepy.editor as mp import requests def video_watermark(url): corners = [("right", "top"), ("left", "top"), ("right", "bottom"), ("left", "bottom")] response = requests.get(url) with open("media/videos/raw_video.mp4", "wb") as file: file.write(response.content) video = (...)
03:15
Splicing two gifs together every other frame using ffmpeg - Alexwall Newest 'ffmpeg' Questions - Stack Overflow

I have two gifs I want to be combined together in an odd fashion. If I have gif1.gif and gif2.gif i want one frame of gif2.gif inserted every other frame of gif1.gif, in a sort of zipper like way if that makes sense. Is this feasible? Is ffmpeg maybe not the right software to use for this?
01:34
combine video and audio .webm files based on wallclock times - Zach Newest 'ffmpeg' Questions - Stack Overflow

I have a node server recording webrtc streams as separate video/audio files via ffmpeg. I'm running ffmpeg via node's child_process.spawn('ffmpeg', commandArgs); Unfortunately, when I try to combine video and audio files later on, I don't know when ffmpeg created the first frame of each file, resulting in out of sync faces and voices :( Here's my command line args for piping the stream into ffmpeg '-loglevel', 'debug', '-reorder_queue_size', '0', (...)

29 July

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

22:10
(ffmpeg) How to sync dshow inputs, dropping frames, and -rtbufsize [closed] - Zach Fleeman Newest 'ffmpeg' Questions - Stack Overflow

I wrote a quick batch script to capture anything from my Elgato HD60 Pro capture card, and while it works in some ways, I don't really understand how certain parameters are affecting my capture. Whenever I run this command without the -rtbufsize 2048M -thread_queue_size 5096 params, I drop a ton of frames. I only added those params with those values because I found them on another stackoverflow thread. I wouldn't mind actually knowing what these do, and how I can fine-tune them for my script. ffmpeg.exe -y -rtbufsize 2048M -thread_queue_size 5096 -fflags +igndts (...)
19:54
How to fix a webm file without audio? - John Newest 'ffmpeg' Questions - Stack Overflow

I use mediarecorder to record video and audio from a user's browser. We record every 15 seconds and then upload that blog to S3. Then we combine all the files together to make one webm file. I believe the first file isn't right because when I combine the files, there is not any audio - only video. Is there a way to alter the headers in the first file to use the audio in all of the subsequent files? OR is there an FFMPEG command to force using the audio? I know they exist in the other files. I don't believe this is important but here is the code that I use to save (...)
20:39
C++ RTSP Stream recording timebase wrong ffmpeg - Tom Baires Newest 'ffmpeg' Questions - Stack Overflow

We fetch a camera stream over RTSP (Axis Q1755 H264). And after a random time we a start recording the stream to a file. I check the video file with ffprobe and realise the start time is not the start time of the recording it is the start time of fetch the stream. My Video has a length of 5 seconds and the start time of the video should be 0. But the real starttime of the Video is at second 20. This leads to a an incorrect timebase. (ffmpeg Version 3.3.3) I try to repair it, but now i have some time the error timebase 1/180000... i marked my changes with the comment (timebase repair (...) --
19:27
Cannot extract audio tracks from video using ffmpeg - Mentos Newest 'ffmpeg' Questions - Stack Overflow

I tried to extract and transcode audio tracks from video, but I got an error: Filter split:output1 has an unconnected output. How to fix this problem? ffmpeg command: ffmpeg -i video.mp4 -filter_complex [0]split=2[s0][s1] -map [s0] -c:a aac -dn -map -0:v? -map 0:1 -map_chapters -1 -map_metadata -1 -sn video-0.aac -map [s1] -ac 2 -c:a aac -dn -map -0:v? -map 0:2 -map_chapters -1 -map_metadata -1 -sn video-1.aac -y fprobe full output (strip information about chapters): Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video.mp4': Metadata: major_brand : (...)
19:21
Variable is not being assingned value from the stdout of a command - Jesse Hix Newest 'ffmpeg' Questions - Stack Overflow

When I try to run the entire program I get an error concerning the assignment of the y variable leading to the entire thing crashing. I have tried a few different ways of formatting but none of them have worked echo -e "Enter the name of the carrier video (include .mp4, .mp3, etc):" read -r carrier_video echo -e "Enter starting point x: " read -r x command rmdir frames command mkdir frames var=$(ffprobe -v error -select_streams v:0 -count_packets -show_entries stream=nb_read_packets -of csv=p=0 "$carrier__video") command $(ffmpeg -i $carrier_video -vf (...)
19:09
Extract LUFS only from multiple file - sJoss Newest 'ffmpeg' Questions - Stack Overflow

ffmpeg -i input.mp4 -af ebur128=framelog=verbose -f null - 2>&1 | awk '/I:/print $2' The above command extract only LUFS value from input.mp4 file. But If there are number of mp4 files, how to apply similar command to extract LUFS value only from multiple mp4 files? Please help.
18:57
How to create side by side horizontally stacked video with delay in video and audio using ffmpeg-python? - kup Newest 'ffmpeg' Questions - Stack Overflow

I am trying to create a video from two videos that will be stacked horizontally but the resulting video is not what i expected. The same video is appearing on both side (left & right). So wondering how that can be achieved? The ffmpeg command i tried, which kinda worked: ffmpeg -i left.mp4 -i right.mp4 -filter_complex " [0:v]setpts=PTS-STARTPTS[l]; [1:v]setpts=PTS-STARTPTS,tpad=start_duration=14:start_mode=add:color=black[r]; [l][r]hstack=inputs=2[stacked]; [0:a][1:a]amix=inputs=2[a] " -map "[stacked]" -map "[a]" -c:a aac -preset superfast (...)

Revisions : colorbox http://github.com/jackmoore/colorbox

17:33
Merge pull request #902 from ngtrian/master - jackmoore Revisions : colorbox

Merge pull request #902 from ngtrian/master Vietnamese translation

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

17:22
Send a file and parameters to a OpenFaas Dockerfile function - Johannes Klauß Newest 'ffmpeg' Questions - Stack Overflow

I have a ffmpeg Dockerfile function that I deploy to my OpenFaaS: FROM ghcr.io/openfaas/classic-watchdog:0.1.5 as watchdog FROM jrottenberg/ffmpeg:4.1-alpine RUN mkdir -p /home/app COPY --from=watchdog /fwatchdog /usr/bin/fwatchdog RUN chmod +x /usr/bin/fwatchdog # Add non root user RUN addgroup -S app && adduser app -S -G app RUN chown app /home/app WORKDIR /home/app USER app # Populate example here - i.e. "cat", "sha512sum" or "node index.js" ENV fprocess="ffmpeg" # Set to true to see (...)
16:57
error when I try to seek on a streaming with ffmpeg and flask - Martin Oller Exposito Newest 'ffmpeg' Questions - Stack Overflow

I want to get a seekable stream from a google drive file but When calling 127.0.0.1:500/, it works and it returns the video stream but it does not show me the duration of the video nor does it allow me to advance or rewind it img of stream in vlc I have also done tests using an html player and it gives me an error in the content length and it seems that after 8 seconds it starts to upload the duration of the file up to 10 seconds (the total duration of the file is 10s) img of stream in player web import threading from flask import Flask, request from (...) -- img of stream in vlc, img of stream in player web
16:43
FFMPEG: Too many packets buffered for output stream 0:1 - Der Micha Newest 'ffmpeg' Questions - Stack Overflow

I want to add a logo to a video using FFMPEG. I encountered this error: "Too many packets buffered for output stream 0:1.", "Conversion Failed.". I tried with diffent pictures and videos, always got the same error. Google didn't help much either. I found a thread C:\\Users\\Anwender\\OneDrive - IT-Center Engels\\_Programmierung & Scripting\\delphi\\_ITCE\\Tempater\\Win32\\Debug\\ffmpeg\\bin>ffmpeg ^ Mehr? -i C:\\Users\\Anwender\\Videos\\CutErgebnis.mp4 ^ Mehr? -i C:\\Users\\Anwender\\Pictures\\pic.png ^ Mehr? -filter_complex "overlay=0:0" ^ Mehr? (...)
16:20
Using FFmpeg in Laravel Unable to load FFProbe error - Amirhasan M Newest 'ffmpeg' Questions - Stack Overflow

I'm using FFmpeg in my Laravel application. I want to set the quality for my video, but I get an error. $ffprob = FFProbe::create(); $getDimension = $ffprob->streams(public_path() . "/video/laravel.mp4") ->videos()->first()->getDimensions(); $w = $getDimension->getWidth(); $h = $getDimension->getHeight(); FFMpeg::fromDisk('public') ->open(public_path() . "/video/laravel.mp4") ->addFilter(function ($filters) $filters->resize(new Dimension(160, 144)); )->export() ->toDisk('public') ->inFormat(new (...)
16:17
How can i create a stable checksum of a media file? - yawniek Newest 'ffmpeg' Questions - Stack Overflow

how can i create a checksum of only the media data without the metadata to get a stable identification for a media file. preferably an cross platform approach with a library that has support for many formats. e.g. vlc, ffmpeg or mplayer. (media files should be audio and video in common formats, images would be nice to have too)
15:45
How to make ffmpeg exit when rtmp input stream ends? - Remi Newest 'ffmpeg' Questions - Stack Overflow

I am using ffmpeg to transcode a stream from my local nginx rtmp server, and send the transcoded media back to the same local rtmp server. When the stream goes offline, ffmpeg stays active. When the stream starts again, ffmpeg picks up the transcoding work. I'd like ffmpeg to exit when the input rtmp stream stops, but I cannot find out to configure it to do that. I've looked through the manual page and the online documentation. For completeness, these are the arguments I currectly provide to ffmpeg: ffmpeg -i 'rtmp://localhost/live/ijsbeer' -s (...)
13:09
Does ffmpeg support yv12? - wxleasyland Newest 'ffmpeg' Questions - Stack Overflow

I've got raw YUV file that is YV12 format. YV12 is not YUV420P, nor I420. X264 can process it, but ffmpeg can't. x264 --input-res 1280x720 --fps 25 --input-csp yv12 --output 2.mp4 2.yuv --this runs correctly, and color is correct! ffmpeg -c rawvideo -s 1280x720 -pix_fmt yv12 -r 25 -i 2.yuv 2.mp4 --there is an error: No such pixel format: yv12 ffmpeg -c rawvideo -s 1280x720 -pix_fmt yuv420p -r 25 -i 2.yuv 2.mp4 --this can run, but color is NOT correct! ffmpeg -pix_fmts --there is no YV12 format in the result (...)
12:10
Regarding encoding h264 video with 1680x1050 - TONY Newest 'ffmpeg' Questions - Stack Overflow

What's the difference between resolution 1680x1050 and others. I use ffmpeg to encoding one video to be 1680x1050 h264, the result video is blurred, I tried qsv and x264, they has the same result. Does it need special settings? I use libyuv to convert argb to nv12, the code as below: uint8_t* yBuf = new uint8_t[imgSize]; uint8_t* uvBuf = new uint8_t[imgSize/2]; int ret = libyuv::ARGBToNV12((uchar*)m_newDesktopData,m_width*4, yBuf,m_width,uvBuf,m_width,m_width,m_height); if(ret != 0) delete []yBuf; delete []uvBuf; (...)
11:57
How to set timestamp all by ourself in using ffmpeg SDK deal vedio? - busy_lazy Newest 'ffmpeg' Questions - Stack Overflow

I want to use my function set a frame data or packet data.Isn't use SDK get timestamp.which hxd(god) can help me? My function is static int64_t cnt_v = 0, cnt_a = 0; static const int64_t dts_base = 0; static const int64_t dts_step = tb.num * 1000 / tb.den; pkt.dts = dts_base + (cnt_v++) * dts_step; pkt.pts = pkt.dts; if frame rate inc, maybe lose frame or audio isn't sync vedio.
10:32
Is there a way to extract a video frame, encode a sentence behind it, put it back, and then decode it? - Jesse Hix Newest 'ffmpeg' Questions - Stack Overflow

I am trying to do stenography on an MP4 video where I am pulling a frame out at a certain time, 5.52 sec, saving that frame as a jpg or jpeg using any image stenography tool, in this case stegosuite, to encode a sentence behind the image and then reinsert that image back into the video at the same time and then extract it again with the same command and using the same steno tool read the message. Up until decoding the message everything runs without issue. I know that it is not working because the videos are not the same in size meaning that the frankenstein video is not the same (...)
09:30
compiling ffmpeg for Mac OSX High Sierra 10.13 - Martin Newest 'ffmpeg' Questions - Stack Overflow

Hello I made an electron app that uses ffmpeg to combine audio and renders video, it works fine on windows, linux, and modern mac osx computers, but a user has reported to me that on an older version of mac osx such as High Sierra 10.13, the way that I have setup ffmpeg does not work. I have a virtual machine with High Sierra v10.13 where I install RenderTune-mac.dmg from my RenderTune releases page, then I download 2 audio files and the image from this link. I open RenderTune, and try render a video. My command to combine the audio files into a single mp3 works fine, but when I try (...) -- RenderTune releases page, this link, https://github.com/MartinBarker/RenderTune/blob/master/buildffmpeg.sh
04:31
FFMPEG - WEBM to AVI conversion failed - Md Yeamin Newest 'ffmpeg' Questions - Stack Overflow

I am trying to convert an webm file to avi using mobile-ffmpeg on android device. For this I have used the following command: -hide_banner -i /storage/emulated/0/Download/input.webm -vcodec copy -acodec mp3 -async 1 /storage/emulated/0/converted/output.avi The above command works fine for most of the files. However it failed to convert for some files. Here is the command log: Input #0, matroska,webm, from '/storage/emulated/0/Download/input.webm': Metadata: ENCODER : Lavf56.40.101 Duration: N/A, start: -0.007000, bitrate: N/A Stream (...)
04:22
cuda invalid resource handle when using h264_cuvid decoder to decode video in my C program - ChrisFisher Newest 'ffmpeg' Questions - Stack Overflow

I try to use GPU acceleration in my ffmpeg decode program, and I check the codecs of ffmpeg by command:ffmpeg -codecs | grep nv, and it shows that I can use h264_cuvid decoder(In fact, I have already used ffmpeg command line to encode and decode a test video with hardware acceleration and it turned out everything was all fine), but when I use the decoder in my program AVCodec *pCodec = avcodec_find_decoder_by_name("h264_cuvid"); here is part of my program void FFMPEGCodec::initDecoder() AVCodec *pCodec = avcodec_find_decoder(AV_CODEC_ID_H264); if (!pCodec) (...)
04:20
cuda invalid resource handle when using h264_cuvid decoder in my C program [closed] - ChrisFisher Newest 'ffmpeg' Questions - Stack Overflow

I try to use GPU acceleration in my ffmpeg decode program, and I check the codecs of ffmpeg by command:ffmpeg -codecs | grep nv, and it shows that I can use h264_cuvid decoder(In fact, I have already used ffmpeg command line to encode and decode a test video with hardware acceleration and it turned out everything was all fine), but when I use the decoder in my program AVCodec *pCodec = avcodec_find_decoder_by_name("h264_cuvid"); here is part of my program void FFMPEGCodec::initDecoder() AVCodec *pCodec = avcodec_find_decoder(AV_CODEC_ID_H264); if (!pCodec) (...)
01:01
FFMPEG command works in shell ! but not in my node.js - Kuno Kim Newest 'ffmpeg' Questions - Stack Overflow

When my ffmpeg command is built by my node.js application it does not run. error Unrecognized option 'ss 3.2 -t 1.9 -i videoplayback.mp4 -vf fps=15,scale=240:-1:flags=lanczos,palettegen palette.png'. command ffmpeg -ss 3.2 -t 1.9 -i videoplayback.mp4 -vf \\ fps=15,scale=240:-1:flags=lanczos,palettegen palette.png this is my code var child_process = require('child_process') function recordVideo() var spawn = child_process.spawn; var args = [ '-y', (...)
00:02
sharedarraybuffer error in edge and firefox but not in chrome when uploading with ffmpeg in nodejs - Juliette Newest 'ffmpeg' Questions - Stack Overflow

I have the code below in React.js that uses ffmpeg to convert files: import createFFmpeg, fetchFile from 'ⓐffmpeg/ffmpeg'; const doTranscode = async () => setMessage('Loading ffmpeg-core.js'); await ffmpeg.load(); setMessage('Uploading file'); ffmpeg.FS('writeFile', filename, await fetchFile(file)); await ffmpeg.run('-i', filename, 'test.wav'); setMessage('Upload to manager complete. Sound file will be available and playable on the manger within 1-2 minutes.'); const (...)

28 July

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

09:23
ffmpeg_opt: restore documented stream selection behaviour - Gyan Doshi git.videolan.org Git - ffmpeg.git/rss log

ffmpeg_opt: restore documented stream selection behaviour 11d3b03fcb added consideration of default stream disposition for audio and video when choosing the 'best' stream among all the inputs. This can lead to video streams with lower resolution or audio streams with fewer channels being selected. Stream disposition, however, only sets a priority for a stream among all other streams in the *same input*. It cannot set a priority for a stream across all inputs. This patch sets a middle-way and selects the best stream from each file with default disposition considered. Then it (...)

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

22:56
Python Lambda function and ffmpeg command with stdout from jpg to ts file - Sflagg Newest 'ffmpeg' Questions - Stack Overflow

I have a AWS Lambda Python function setup to process jpg and convert it to a ts file. I followed these instructions https://aws.amazon.com/blogs/media/processing-user-generated-content-using-aws-lambda-and-ffmpeg/ but changed the command from vfr to cfr conversion to a jpg to ts conversion. This is the command I am using ffmpeg_cmd = "/opt/bin/ffmpeg -r 30000/1001 -loop 1 -i \\"" + s3_source_signed_url + "\\" -f lavfi -i anullsrc=channel_layout=stereo:sample_rate=48000 -t 30 -vcodec libx264 -crf 23 -s 1920x1080 -r 30000/1001 -g 150 -pix_fmt yuv420p -acodec aac -b:a (...) -- https://aws.amazon.com/blogs/media/processing-user-generated-content-using-aws-lambda-and-ffmpeg/
22:38
Make error: ffbuild/config.mak(1) : fatal error U1034: syntax error : separator missing Stop - Schuerta Newest 'ffmpeg' Questions - Stack Overflow

Im trying to build ffmpeg on windows but I am getting the error in the title when i use nmake. What is causing this? --
22:22
Creating video thumbnail with ffmpeg from buffer - J. Carpenter Newest 'ffmpeg' Questions - Stack Overflow

Attempting to create a child process which spawns ffmpeg command. Should use the buffer from fs.readFile to write to stdin. The -i - flag tells ffmpeg to source input from stdin but nothing is happening when running this code. If replace -i - with -i test.mp4 this script works perfectly. What is wrong with the write to stdin which is not allowing code to generate thumbnail? (async () => const spawn = require('child_process').spawn; const fs = require('fs/promises'); const buffer = await fs.readFile('test.mp4'); await new (...)
20:07
Issue concating two halves of a video with an image - Jesse Hix Newest 'ffmpeg' Questions - Stack Overflow

I am getting this error when I try to run this code. I am new to ffmpeg so I'm not sure how to fix it. Invalid file index 4 in filtergraph description [0:v][4:a][1:v][1:a][2:v][4:a][3:v][4:a]concat=n=4:v=2:a=1. The goal of this code is to insert an image between two halves of a video with the image data intact an able to be pulled out. ffmpeg \\ -i original.mp4 -ss 00:00:00 -t 00:00:5.48 -async 1 \\ -loop 1 -framerate 24 -i frames1.jpeg \\ -f lavfi -t 0.1 -i anullsrc=channel_layout=stereo:sample_rate=44100 \\ -i original.mp4 -ss 00:00:5.52 -t 00:00:21.12 (...)
21:35
Creating a transparent video out of an input video - poldown Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to create a video with a transparent background out of an input video (with the same dimensions, etc.). I tried several strategies (using the chromakey filter and others) and none worked... I got this far: ffmpeg -i input.mp4 -filter_complex "color=color=blackⓐ0.0,format=yuva420p[bg],[bg][0:v]scale2ref[bg][0v],[bg]drawbox=x=10:y=10:w=100:h=100:color=pinkⓐ0.5;[0v]nullsink" -c:v qtrle -an "alpha.mov" creating a video stream with transparency, and setting a transparent background (blackⓐ0.0) scaling the transparent video according to the input (...)
20:50
Need to concatenate several MP4 from Garmin dashcam with telemetry - Suporte JM Newest 'ffmpeg' Questions - Stack Overflow

I have a Garmin 66W dashcam for my work (street mapping surveyor) which produces several 1min. MP4 videos of my journey (60 min. = 60 videos). All these videos have telemetry data on it as metadata (GPS location, speed, etc...). I want to concatenate every 5 files excluding the audio but preserving the video and the telemetry in the metadata. What I have tried so far: Export GPS information as GPX file (result: successful) exiftool -p gpx.fmt -ee X:\\video_place\\videos_1m\\GRMN0005.mp4 > GRMN0005.gpx Merge MP4 videos as a single MP4 video (result: (...)
10:45
Extract Creation date and time of multiple files at once [duplicate] - sJoss Newest 'ffmpeg' Questions - Stack Overflow

$ ffprobe -v quiet -select_streams v:0 -show_entries stream_tags=creation_time -of default=noprint_wrappers=1:nokey=1 input.mp4 This is good for one file at a time, can someone suggest while multiple files like 50 files at a time? or how to run this in a loop? When there are 50 files, it doesn't make sense to run this command 50 times inputting file name every single time. Thanks
16:50
FFMPEG Inverse blur - Matthew Wilson Newest 'ffmpeg' Questions - Stack Overflow

We are generating an FFMPEG complex filter that blurs all but a specific section of a video. This section can be moved and resized by a user. The resulting filter chain looks like this [0:v] split=2 [inverseBlurInputFilter0-1][inverseBlurInputFilter0-2]; [inverseBlurInputFilter0-1] boxblur=40: enable='between(t,0.0,0.056268)' [blurFilter0]; [inverseBlurInputFilter0-2] crop=500.0:500.0:642.5:372.5 [cropFilter0]; [blurFilter0][cropFilter0] overlay=642.5:372.5 [overlayInverseBlurFilter0]; (...)
15:13
Quickly check the integrity of video files inside a directory with ffmpeg - DMT Newest 'ffmpeg' Questions - Stack Overflow

I'm desperately searching for a convenient method to check the integrity of .mp4 files inside a specific directory with folders in it. Both the names of the .mp4 files and the folders contain spaces, special characters and numbers. I've already found a proper ffmpeg command to quickly identify a damaged .mp4 file, taken from here: ffmpeg -v error -i filename.mp4 -map 0:1 -f null - 2>error.log If the created error.log contains some entries, then the file is obviously corrupted. The opposite would be an empty error.log. The next step would be to (...)
15:10
Frames and Size Increase as Speed Reduces When Ffmpeg Converts HLS to MPEGTS - Mikeyy10 Newest 'ffmpeg' Questions - Stack Overflow

I've been trying my hands on programmatically using ffmpeg to convert HTTP live streams to mpegts. All of the HLS I've tried have been on remote servers and everything worked fine until this particular feed. As you can see in the logs, the number of frames keeps increasing by 150 and the size increases as a result. At the same time, the speed reduces. This is the code I used:ffmpeg -i http://xxxxxxxx-xxxxxxx-xx.m3u8 -y -r 100 -vcodec libx264 -f mpegts -preset ultrafast -tune zerolatency -t 00:10:00.500 /home/xxxx-xxxxxx/app/backend/queues/../files/output.mpegts I have tried (...)
14:40
Overwriting TS Stream File with FFMPEG in Linux - user5717177 Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to convert rtmp streams to m3u8 stream. To reach that aim I use FFMPEG. Now, there is no problem with converting and downloading. However, it writes lots of .ts file such as channel0000.ts,channel0001.ts,channel0002.ts. Per every 10 seconds, 1 ts file is created. In this point, I want a single ts file. In other words, I need overwriting because I don't want to store all the stream I need just last 10 seconds. When I try to write on the same file I get this error: Invalid segment filename template 'channel.ts' Could not write header for output (...)
14:18
Why do I get "method DESCRIBE failed: 401 Unauthorized " - TheOliveTurtle Newest 'ffmpeg' Questions - Stack Overflow

Let me explain my problem, I am trying to access different channels in a DVR system. I have successfully gotten access to a single camera (channel 1) by using opencv as such: public_link = 'rtsp://test:testⓐ192.168.1.48/cam/realmonitor' cap = cv2.VideoCapture(public_link, cv2.CAP_FFMPEG) The problem is I can't access the other channels with these parameters: public_link = 'rtsp://test:testⓐ192.168.1.48/cam/realmonitor?channel=3&subtype=0' cap = cv2.VideoCapture(public_link, cv2.CAP_FFMPEG) I've tried the (...)
12:27
use FFmpeg in laravel - Amirhasan M Newest 'ffmpeg' Questions - Stack Overflow

i`m want set quality for video $ffprob = FFProbe::create(); $getDimension=$ffprob->streams(public_path()."/video/laravel.mp4")->videos()->first()->getDimensions(); $w = $getDimension->getWidth(); $h = $getDimension->getHeight(); FFMpeg::fromDisk('public') ->open(public_path()."/video/laravel.mp4") ->addFilter(function ($filters) $filters->resize(new Dimension(160,144)); )->export() ->toDisk('public') ->inFormat(new X264()) ->save('converted/video'); return back()->with('CRES'); show me an (...)
13:26
Detection of virtual background on video using ffmpeg - Marcos G Newest 'ffmpeg' Questions - Stack Overflow

I am trying with ffmpeg to detect the use of a virtual background on a video, like the ones used in Google Meet. I got some ideas, but none seem to work: Egde color: When using a chroma key you can get shades of green/blue on the outline of the subject. This is called spill, and can be detectable, but gets discarded by the fact that you dont need a chroma key to fake a background (example: Google Meet). Still image: Most of virtual backgrounds are a still image pasted behind the subject. The problem with detecting this is that most of the real backgrounds also are like still (...) -- the ones used in Google Meet
11:14
ffmpeg single output container with 4 audio channel to AWS IVS - Yusufu Newest 'ffmpeg' Questions - Stack Overflow

Trying to send 1 video and 4 different audios to AWS IVS in single container. Which container or muxer should I use ? FLV doesn't support multi audio, matroska doesn't support rtmp I guess link. 3GP and mp4 containers doesn't give me error but neither video showing on IVS For simple try I am using this command. ffmpeg -re -stream_loop -1 -i sample.mkv -r 30 -c:v libx264 -pix_fmt yuv420p -profile:v main -preset veryfast -x264opts "nal-hrd=cbr:no-scenecut" -minrate 3000 -maxrate 3000 -g 60 -c:a aac -ac 2 -ar 44100 -vb 400k -maxrate 400k -minrate 400k (...) -- AWS IVS, link
11:14
How to stream video form device to ingestion server using nodejs - rocky Newest 'ffmpeg' Questions - Stack Overflow

I'm building a live streaming app (one-to-many) and am using AWS IVS as my ingestion server. Now, I get the video feed from mediaRecorder api transmits the video using socket.io as a buffer. Now the challenge is to parse the real-time buffers to AWS IVS or any other ingestion server. I figured that the only way to stream the video is by using ffmpeg and that's where am completely stuck. Here is my code // ffmpeg config const spawn, exec = require("child_process"); let ffstr = `-re -stream_loop -1 -i $input -r 30 -c:v libx264 -pix_fmt yuv420p (...)
10:30
FFMPEG - Get creation and/or modification date - rmartrenado Newest 'ffmpeg' Questions - Stack Overflow

I'm trying hard to get the modification date from a MP4 file hosted on my server. I tried the following library: ffmpeg -i video.mp4 Without any luck. All I get is duration and a few other fields but I'm not able to get modification date. I tried ffprobe as well and it is not there either. Any suggestions?? Thanks a lot
07:45
installing and using ffmpeg on mamp under mac snow leopard - sarmen Newest 'ffmpeg' Questions - Stack Overflow

hi i was wondering if anyone knew how to install ffmpeg on mac then how would i link it to mamp so that i can use it with php? thanks
07:45
Where is a binary file once it's been built (for ffmpeg)? - James Skidmore Newest 'ffmpeg' Questions - Stack Overflow

I need to build ffmpeg for Mac for converting MOV to FLV in a Java application. I made and installed LAME and then FFMPEG, but I'm confused as to what file I should grab to include with the Java application. What is the binary file? The previous version that I grabbed from the source of ffmpegX was 10mb in size, but the file that's in my /usr/local/bin is only 0.1mb. Is that the right file, or what do I need to include? I'm not too savvy with anything that needs to be typed into Terminal, so excuse the lack of technical (...)
07:21
How to make ffmpeg insert timestamp in filename - sealfab Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to make a bash script that grabs a still shot from an IP camera and than emails it. Using ffmpeg -i http://admin:Stupidpassword1ⓐ10.12.10.40/Streaming/channels/1/picture \\ -f image2 -updatefirst 1 doorbell.jpg From what I have read this should work but the output file name is still doorbell.jpg How can I make the filename TIMESTAMPdoorbell.jpg?
07:17
TypeError: Cannot read property 'url' of undefined - ws - Bawantha Rathnayaka Newest 'ffmpeg' Questions - Stack Overflow

I am trying to get URL starts with '/rtmp/', and extract the target RTMP URL. Uncaught TypeError: Cannot read property 'url' of undefined this is my server.js let match if (!(match = req.url.match(/^\\/rtmp\\/(.*)$/))) ws.terminate() // No match, reject the connection. return
06:32
Error while adding RTSP stream to Ant media server - Jacob Newest 'ffmpeg' Questions - Stack Overflow

I have successfully remotely viewed the stream using ffplay -rtsp_transport tcp rtsp://streamurl. ffplay version 4.4 Copyright (c) 2003-2021 the FFmpeg developers built with Apple clang version 12.0.5 (clang-1205.0.22.9) configuration: --prefix=/opt/homebrew/Cellar/ffmpeg/4.4_2 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librubberband --enable-libsnappy (...)
06:16
How to make ffmpeg re-encode an vp9 webm with alpha into a vp9 webm with alpha - LemmeTestThat Newest 'ffmpeg' Questions - Stack Overflow

I am trying to find optimal parameters for encoding a transparent video using ffmpeg in my scenario, and as a test, I have been re-encoding a pre-made transparent .webm (vp9 with alpha channel, made using python vidgear) like this: $ /usr/bin/ffmpeg -i pre-made.webm pre-made-remade.webm ffmpeg version 4.3.2-0york0~18.04 Copyright (c) 2000-2021 the FFmpeg developers built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04) configuration: --prefix=/usr --extra-version='0york0~18.04' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu (...)
05:36
ffmpeg grap a image from webcarmera issue from python invoking - neil2021 Newest 'ffmpeg' Questions - Stack Overflow

I meet an issue that cmd of ffmpeg is working from dos command line but not working from python code with error: not working from python invoking cmd: ffmpeg -f dshow -i video="Webcam C170" -frames 1 target.jpg is working well from windows dos command line working well from dos command line but failed when using os.system(cmd) or os.popen(cmd) or subprocess.popen(cmd) not working from python invoking I do not know why the ffmpeg is not working while invoking by python code. =============================== cite from another post: I meet the same (...) -- not working from python invoking, working well from dos command line
05:21
What does "all-yes" mean in ffmpeg Makefile - FLT Newest 'ffmpeg' Questions - Stack Overflow

In ffmpeg Makefile, https://github.com/FFmpeg/FFmpeg/blob/master/Makefile#L37 https://github.com/FFmpeg/FFmpeg/blob/master/Makefile#L189 It defined phony targets "all" and "all-yes", but I can't find prerequisites and command of "all-yes" by searching whole ffmpeg directory. So can anyone help to explain what "all-yes" exactly means? -- https://github.com/FFmpeg/FFmpeg/blob/master/Makefile#L37, https://github.com/FFmpeg/FFmpeg/blob/master/Makefile#L189
05:03
Mp4 to dynamic adaptive hls with multiple bitrates using ffmpeg - Awais fiaz Newest 'ffmpeg' Questions - Stack Overflow

I tried converting mp4 video to HLS for online streaming which I have successfully done using FFmpeg. Command: ffmpeg -i /var/www/html/file_conversion/heli.mp4 -map 0 -profile:v baseline -level 3.0 -s 640x360 -c:v libx264 -b:v 500k -c:a libfdk_aac -b:a 320k -hls_list_size 0 -start_number 0 -hls_init_time 0 -hls_time 2 -f hls /var/www/html/file_conversion/hlstest2/heli.m3u8 But now I am trying to convert the same video with multiple bitrates for dynamic adaptive streaming. Any idea how can I achieve (...)
02:06
Is there a way to use current frame and total frames as vairables in a filter in ffmpeg? - Ozan Şimşeker Newest 'ffmpeg' Questions - Stack Overflow

I am trying to write a silly command to rotate a video clockwise through the entire thing. The only things I need is a variable to tell the filter the current frame number, and the total frame count. Here's my planned command (cf = current frame, tf = total frames) ffmpeg -i input.mp4 -vf rotate=(cf*(tf/360))/PI*180 output.mp4 Is there anyone willing to help?

27 July

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

20:25
libavcodec/mpeg12dec.c: Switch to init_get_bits8 and checks return value - Thierry Foucu git.videolan.org Git - ffmpeg.git/rss log

libavcodec/mpeg12dec.c: Switch to init_get_bits8 and checks return value Signed-off-by: Michael Niedermayer <michaelⓐniedermayer.cc> [DH] libavcodec/mpeg12dec.c

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

23:49
Why can't I duplicate an MJPEG stream from a webcam to a V4L2 Loopback Device on Linux? - Chris White Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to duplicate a USB webcam device V4L2 stream (/dev/video0) to a V4L2 Loopback Device (/dev/video99) at the highest resolution and framerate possible with the hardware available on a Raspberry Pi 4 running the latest Raspbian (also the minimum CPU load). I'm using FFMPEG version 7:4.1.6-1~deb10u1+rpt2 and v4l2loopback version 0.12.5.1. The output from: ffmpeg -f v4l2 -list_formats all -i /dev/video0 gives me the following: [video4linux2,v4l2 ⓐ 0xc1e1c0] Compressed: mjpeg : Motion-JPEG : 1600x1200 3264x2448 2592x1944 2048x1536 1280x960 1024x768 800x600 (...)
23:27
FFMPEG: How to fix WebM file which was created by stitching multiple WebM files? - thedeadalive Newest 'ffmpeg' Questions - Stack Overflow

I have a file that has multiple WebM(vp9/opus) streams stitched together sequentially. When trying to play it through regular media players it stops at the end of 1st stream in the sequence. When used with FFMPEG for transcoding it to MP4, the trancoding stops at the end of first stream. Using FFMPEG is it possible to make a regular WebM(vp9/opus) file from a file that contains multiple WebM(vp9/opus) stitched together sequentially?

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

21:16
avfilter/avf_showcqt: switch to TX FFT from avutil - Paul B Mahol git.videolan.org Git - ffmpeg.git/rss log

avfilter/avf_showcqt: switch to TX FFT from avutil [DH] configure [DH] libavfilter/avf_showcqt.c [DH] libavfilter/avf_showcqt.h [DH] libavfilter/x86/avf_showcqt_init.c
20:48
avfilter/af_afftdn: switch to TX FFT from avutil - Paul B Mahol git.videolan.org Git - ffmpeg.git/rss log

avfilter/af_afftdn: switch to TX FFT from avutil [DH] configure [DH] libavfilter/af_afftdn.c

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

18:27
Error : undefined reference to `x264_encoder_open_155' - Shankar Newest 'libx264' Questions - Stack Overflow

I had done sudo apt-get update sudo apt-get upgrade after that i am getting this error while compiling project: ffmpeg/libavcodec/libx264.c:948: undefined reference to `x264_encoder_open_155' Even i tried to build ffmpeg, i still got same error. Is there any solution or suggestions for this error?

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

18:11
concat 2 videos with sound and loop with the other audio which is longer or shorter - Andy Newest 'ffmpeg' Questions - Stack Overflow

I have audio.mp3 can be longer or shorter than concat of 2 videos with sound. If audio > video, video will be looped until audio stops If audio Currently, I have to use 2 lines: ffmpeg -y -i v1.mp4 -i v2.mp4 -filter_complex "[0:v:0][0:a:0][1:v:0][1:a:0?]concat=n=2:v=1:a=1[outv][outa]" -c:v libx264 -map "[outv]" -map "[outa]" v12.mp4 and ffmpeg -i audio.mp3 -stream_loop -1 -i v12.mp4 -filter_complex "amovie=$BODY12:loop=0,volume=0.5,apad[A];[0:a][A]amerge[outa]" -c:v copy -c:a aac -map 1:v -map "[outa]" -shortest -y newvideo.mp4 Do you (...)
18:09
Is there a way to hide text or an image behind a video with ffmpeg? - Jesse Hix Newest 'ffmpeg' Questions - Stack Overflow

The following command puts an image in the upper left hand corner that flashes every 2 or so seconds. ffmpeg -i input.mp4 -loop 1 -i test.jpeg -filter_complex "[0][1]overlay=enable='if(gt(n,0),not(mod(n,20)),0)':shortest=1[v]" -map "[v]" -map 0:a? -c:a copy output.mp4 The following command puts text in the center of a video and depending on the ⓐ.05 make it invisible or visible. ffmpeg -i input.mp4 -vf "drawtext=fontfile=/path/to/font.ttf:text='Stack Overflow':fontcolor=whiteⓐ.05:fontsize=24:x=(w-text_w)/2:y=(h-text_h)/2" -codec:a copy output.mp4 My (...)

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

17:00
avformat/concat: check the terminating character returned by av_get_token() - James Almer git.videolan.org Git - ffmpeg.git/rss log

avformat/concat: check the terminating character returned by av_get_token() Don't attempt to increase the cursor pointer if it was \\0. Fixes invalid reads. Reviewed-by: Marton Balint <cusⓐpasswd.hu> Reviewed-by: Nicolas George <georgeⓐnsup.org> Signed-off-by: James Almer <jamrialⓐgmail.com> [DH] libavformat/concat.c

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

15:52
Clang cannot find dependency of a shared library - zana zakaryaie nejad Newest 'ffmpeg' Questions - Stack Overflow

I have a project with two submodules (say A and B). A depends on FFmpeg and B depends on A. Clang successfully finds FFmpeg and builds libA.so but it fails to build libB.so because it can't find FFmpeg! The strange thing is that GCC can handle this. When I move find_package(FFmpeg) from submodule A's CMakelists to the project's CMakelist, then libB.so is successfully built. But this is an ugly solution. Any suggestion for the reason behind this strange (...)
14:43
Does anyone use go-av to parse mp4 audio and then use oto/portaudio to output it? - seven Newest 'ffmpeg' Questions - Stack Overflow

it is use go-av to get audio func audio() (= 0 if pkt.StreamIndex() == audioStreamIndex l := pCodecCtx.AvcodecDecodeAudio4((*avcodec.Frame)(unsafe.Pointer(utilFrame)), &gotName, pkt) //fmt.Println("AvcodecDecodeAudio4:", l) if l 0 fram := getFramBytes(utilFrame) fmt.Println("buf add:", index) buffer and it is output it func main() portaudio.Initialize() defer portaudio.Terminate() out := make([]int32, 8192) stream, err := portaudio.OpenDefaultStream(0, 1, 44100, len(out), &out) defer (...)
14:24
SRT : No Room to Store Incoming Packets when we stream SRT streams through VLC - Shankar Newest 'ffmpeg' Questions - Stack Overflow

Hope all you are doing well. Actually i was trying to stream a media file using VLC by SRT protocol. For which, srt-live-transmit is used as converter in between SRT Listener and VLC UDP streams. srt-live-transmit used to convert udp to srt streams(mpegts). But when i tried to do that, after few seconds, i got error in srt-live-transmit terminal that : No room to store incoming packet: What should be the reason for this error? And if anyone know anything about this problem, please share info. It would be helpful. Thank (...)
13:14
Why does FFMPEG incorrectly guess .M4A to be a WAV pcm_s16le file? - Meggy Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to extract a section of audio with this command; ffmpeg -ss 00:00:01 -i input.m4a -t 00:00:03 -c:a copy output.m4a But FFMPEG incorrectly guesses the .M4A to be a WAV pcm_s16le file so I have to use this command and convert to AAC for the .M4A output; ffmpeg -vn -ss 00:00:01 -i input.m4a -t 00:00:03 -c:a aac output.m4 But I'm worried that this may lead to it being processed twice. So how do I get FFMPEG to recognise that the output file should remain in the same format as the input file and simply be copied instead of (...)
11:15
defining variable in subprocess function python [duplicate] - david Newest 'ffmpeg' Questions - Stack Overflow

I have the following ffmpeg command and I have several videos in a folder that I need to implement this command for each videos. ffmpeg -i input.mp4 -c:v libx264 -map 0 -segment_time 2 -reset_timestamps 1 -g 120 -sc_threshold 0 -force_key_frames "expr:gte(t,n_forced*1)" -f segment output%0d.h264 this command split the video into several chunks with different names, so I need to execute this command in python using subprocess.call function to automatically implement this command for each video. but I do not know how can I define output%0d.h264 as a variable in subprocess, (...)
11:06
FFMPEG - Could not find tag for codec pcm_s16le in stream #0, codec not currently supported in container - Meggy Newest 'ffmpeg' Questions - Stack Overflow

I'm using the following command to extract part of a mono 44K .M4A audio file; ffmpeg -ss 00:00:01 -i input.m4a -t 00:00:03 -c:a copy output.m4a But I'm getting the following error; Trailing option(s) found in the command: may be ignored. Guessed Channel Layout for Input Stream #0.0 : mono Input #0, wav, from 'input.m4a': Duration: 00:00:01.95, bitrate: 705 kb/s Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, mono, s16, 705 kb/s [ipod ⓐ 00000222e439ca00] Could not find tag for codec pcm_s16le in stream #0, (...)
09:52
implementing a ffmpeg command in python [closed] - david Newest 'ffmpeg' Questions - Stack Overflow

I have the following ffmpeg command and I have several videos in a folder that I need to implement this command for each videos. ffmpeg -i input.mp4 -c:v libx264 -map 0 -segment_time 2 -reset_timestamps 1 -g 120 -sc_threshold 0 -force_key_frames "expr:gte(t,n_forced*1)" -f segment output%0d.h264 this command split the video into several chunks with different names, so I need to execute this command in python using subprocess.call function to automatically implement this command for each video. but I do not know how can I define output%0d.h264 as a variable in subprocess, (...)
09:38
How to use milliseconds in FFmpeg's drawText? - Abs Newest 'ffmpeg' Questions - Stack Overflow

How can I use milliseconds to define the placement of text? drawtext=fontfile=font/arial.ttf:text='Test':enable='between(t,1,5)' Currently, I only have the option of seconds using the enable command. -- enable command
08:52
ffmpeg ignores video stream bitrate input doubling the -b:v parameter that I set during encoding - QRrabbit Newest 'ffmpeg' Questions - Stack Overflow

My question is, how do I force ffmpeg to encode a video at a specific kb/s? The problem is that my output is almost twice the size of the input 1.2Gb This is my input (from ffprobe): Stream #0:0(eng): Video: prores (4444) (ap4h / 0x68347061), yuva444p12le(tv, bt709, progressive), 1920x1080, 316752 kb/s, SAR 1:1 DAR 16:9, 29.97 fps, 29.97 tbr, 30k tbn, 30k tbc (default) Metadata: creation_time : 2021-07-26T23:59:52.000000Z handler_name : Apple Video Media Handler timecode : 00:00:00:00 My encoding command string: ffmpeg -i input.mov -i (...)
08:14
ffmpeg through python subprocess fails to find camera - Ofer Sadan Newest 'ffmpeg' Questions - Stack Overflow

Weird problem here, i use this command to capture my webcam through ffmpeg (through cmd on windows): ffmpeg -y -t 300 -rtbufsize 1024M -f dshow -i video="Lenovo EasyCamera" -c:v libx264 -preset veryslow -crf 25 Desktop.mkv and everything works fine. But when i try the very same command through python as a subprocess it fails. Here's the python code: from subprocess import Popen cmd = ['ffmpeg', '-y', '-t', '300', '-rtbufsize', '1024M', '-f', 'dshow', '-i', (...)
06:57
FFMPEG segmented radio stream shows incorrect duration after a concat - darbid Newest 'ffmpeg' Questions - Stack Overflow

On MacOS using Automator I am recording a radio stream. I thought the best way to do this so as to avoid an internet drop out was to segment it as follows. /opt/homebrew/Cellar/ffmpeg/4.4_2/bin/ffmpeg -i http://s2.viastreaming.net:7100 -t 02:10:00 -c copy -f segment -segment_time 1800 -segment_list /Volumes/BackUp/Radio/segmentlist.txt -segment_list_entry_prefix "file /Volumes/BackUp/Radio/" /Volumes/BackUp/Radio/Segments_%d.m4a I then bring it all together with the following command. /opt/homebrew/Cellar/ffmpeg/4.4_2/bin/ffmpeg -f concat -safe 0 -i (...)
06:45
Fragmented MP4: TrackFragHeader TFHD must have TrackID, is this in the spec? - Penquin Newest 'ffmpeg' Questions - Stack Overflow

I'm building a fragmented mp4 muxer and noticed that the track id is repeated inside the TFHD. If the video does not have this undocumented track id, it will simply not play. Here's an example of a muxer adding it: https://github.com/edgeware/mp4ff/blob/bb9320744777dc97f18034c8aed45a9bcdbaa995/mp4/tfhd.go#L154 I was relying on the open spec provided by Microsoft: https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-sstr/513ea48c-9a57-4792-a32a-fb6202ce2a58 Is this an addition to the spec? Is the spec provided by Microsoft (...) -- https://github.com/edgeware/mp4ff/blob/bb9320744777dc97f18034c8aed45a9bcdbaa995/mp4/tfhd.go#L154, https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-sstr/513ea48c-9a57-4792-a32a-fb6202ce2a58
06:09
Why reading line by line and feeding ffmpeg removes leading character gradually? [closed] - Ibn Fulan Newest 'ffmpeg' Questions - Stack Overflow

As I was answering this question, I tried two ways to read my script to read timestamps line by line. #! /bin/bash x="00:00:00" z=0 filename=$(basename -- "$2") ext="$filename##*." while read y do echo $x ffmpeg -hide_banner -loglevel error -i $2 -ss $x -to $y -c copy $filename$z.$ext let "z=z+1" x=$y done And #! /bin/bash x="00:00:00" z=0 filename=$(basename -- "$2") ext="$filename##*." while IFS=, read -r y do echo $x ffmpeg -hide_banner -loglevel error -i $2 -ss $x -to $y -c copy (...)
00:16
ffmpeg for archival and convertibility - Satya Newest 'ffmpeg' Questions - Stack Overflow

I've got a couple hundred gigs of *.dv files. I'd like to convert them to H.264 or something else or even leave them alone. The purpose is archival, with an eye to maximum convertibility especially to DVD. The content is family videos. Would this be fine? ffmpeg -i input.dv \\ -c:v libx264 -preset slower \\ -crf 17 \\ -pix_fmt yuv420p \\ output.mp4 I went with the slower preset because encoding time isn't an issue and I'd like a smaller file size. crf 17 is for least-lossy while being widely playable. I read somewhere that yuv420p is (...) -- https://trac.ffmpeg.org/wiki/Encode/H.264

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