21 mai

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

• 14:23
  ffmpeg - data is being "removed" while h264 is being processed by ffmpeg - Laki Newest 'ffmpeg' Questions - Stack Overflow
  I got a file which is created based on messages coming from streaming, all of the "messages" are ending with b'h264\\x00' I got a need to load the data into ffmpeg perform some processing of the data re-attach the data to same "messages" Data is loaded with ffmpeg and saved with ffmpeg - however - ffmpeg removes "part" of the data I have simplified the process and currently I am only loading and saving the data, without any processing, but still - part of the data is being removed I have used several commands - but always, part of my data (...)
• 14:12
  Can av_freep() be replaced directly with the following implementation? - user25167190 Newest 'ffmpeg' Questions - Stack Overflow
  After reviewing the implementation of av_freep(void* arg) in the FFmpeg documentation, I have some questions. Specifically, can its code be simplified to the following form? FFmpeg Implementation: void av_freep(void* arg) void* val; memcpy(&val, arg, sizeof(val)); memcpy(arg, &(void*) NULL , sizeof(val)); av_free(val); my version: void av_freep(void* arg) free(*arg); *arg = (...)
• 12:33
  ffmpeg real-time buffer too full or near too full frame dropped, I even tried increasing rtbufsize. What could be going wrong? - Ali Azlan Newest 'ffmpeg' Questions - Stack Overflow
  We have a software where we capture the stream from the camera connected to the laptop or device using ffmpeg python, ffmpeg .input(video, s='640x480', **self.args) //tried with rtbufsize=1000M (enough I suupose/ also sometimes the error does not occur even on default rtbufsize which is around 3MB) .output('pipe:', format='rawvideo', pix_fmt='rgb24') .overwrite_output() .run_async(pipe_stdout=True) majority of the times when I start the software like the software is still initiating we receive the following error, (...)
• 13:28
  FFmpeg stream extraction modifies subtitles - user18812922 Newest 'ffmpeg' Questions - Stack Overflow
  I have a video with the following ffprobe output: Input #0, matroska,webm, from 'video.mkv': Metadata: title : Video - 01 creation_time : 2021-07-14T02:49:59.000000Z ENCODER : Lavf58.29.100 Duration: 00:22:57.28, start: 0.000000, bitrate: 392 kb/s Chapters: Chapter #0:0: start 0.000000, end 86.169000 Metadata: title : Opening Chapter #0:1: start 86.169000, end 641.266000 Metadata: title : Part A Chapter #0:2: start 641.266000, end 651.359000 Metadata: title : Eyecatch Chapter #0:3: start (...)
• 09:56
  FFMpeg with xfade, 'auto_scale_x' inserted automatically. How to get rid of it? - userxxxxxxxxx Newest 'ffmpeg' Questions - Stack Overflow
  I'd like to use cuda gpu as below. But ffmpeg keep saying that Impossible to convert between the formats supported by the filter 'Parsed_hwupload_cuda_0' and the filter 'auto_scale_2' [fc#0 ⓐ 0000018ff3ff4e80] Error reinitializing filters! [fc#0 ⓐ 0000018ff3ff4e80] Task finished with error code: -40 (Function not implemented) [fc#0 ⓐ 0000018ff3ff4e80] Terminating thread with return code -40 (Function not implemented)"** *ffmpeg -y -loglevel debug -nostats -hide_banner -init_hw_device cuda=gpu:0 -hwaccel cuda -hwaccel_device gpu (...)
• 09:43
  FFmpeg-Python command too long because of drawtext - Xascoria Newest 'ffmpeg' Questions - Stack Overflow
  I have a FFmpeg-Python program that puts subtitles into a video, pseudocode below: for i in range(10000): video= video.filter( 'drawtext', fontfile=FONT_FILE, text=cur_string, x='(w-text_w)/2', y='(h-text_h)/2', fontsize=FONT_SIZE, fontcolor=FONT_COLOR, borderw=2, bordercolor=FONT_OUTLINE_COLOR, enable=f'between(t,i,i+1)') video.output(PATH).run() The code above gives the following error: FileNotFoundError: [WinError 206] The filename or extension is too long My questions are: (1) Is (...)
• 11:20
  Issues with Publishing and Subscribing Rates for H.264 Video Streaming over RabbitMQ - Luis Newest 'ffmpeg' Questions - Stack Overflow
  I am working on a project to stream an H.264 video file using RabbitMQ (AMQP protocol) and display it in a web application. The setup involves capturing video frames, encoding them, sending them to RabbitMQ, and then consuming and decoding them on the web application side using Flask and Flask-SocketIO. However, I am encountering performance issues with the publishing and subscribing rates in RabbitMQ. I cannot seem to achieve more than 10 messages per second. This is not sufficient for smooth video streaming. I need help to diagnose and resolve these performance (...)
• 09:18
  How can I get decoded frames, which I sent into GPU, can i get them from GPU in rgb - Владислав Сапожник Newest 'ffmpeg' Questions - Stack Overflow
  I use ffmpeg.av_hwframe_transfer_data to sent decoded frames into GPU, but i can not get them again in another good format. I try to change my shaders, use av_hwframe_transfer_get_formats but it is not working!dfghkdsfiuhsgiherghoeirughoighweroigjoiwejgoiwrjgjeoijgoiewgoheroighoieqfgoihqeoigheiogieiqrhgihergh2eouirghou2rerhg My code: private static bool _readingComplete = false; private static bool _decodingComplete = false; private static readonly object _lock = new object(); private static Queue packets = new Queue(); private static readonly object (...)
• 06:38
  Find bytes range of webm video for specified segment - M2sh Newest 'ffmpeg' Questions - Stack Overflow
  I have a Video in webm format (like video.webm the duration is 60 seconds) I want to get specified segment of video (i.e split video) with http header range (Range: 100-200). In another word: I want to get a section of video (e.g. from second 4 to 12) but I don't want to use any converter like ffmpeg. I want to send http request to server and get specified range of webm file. Can I use this method (http range header)?  (...)
• 06:24
  When I use ffprobe to check a video stream，I get the error below - dongrixinyu Newest 'ffmpeg' Questions - Stack Overflow
  I came across with a problem when ffprobe and decoding video stream . Here is the log: ffprobe version 6.1.1 Copyright (c) 2007-2023 the FFmpeg developers built with gcc 9 (Ubuntu 9.4.0-1ubuntu1~20.04.2) configuration: --enable-gpl --enable-version3 --enable-shared --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-libsnappy --enable-zlib --enable-libsrt --enable-libssh --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libdav1d --enable-libdavs2 --enable-libzvbi --enable-libwebp (...)
• 05:10
  FFMpeg with cuda, 'auto_scale_x' inserted automatically. How to get rid of it? - userxxxxxxxxx Newest 'ffmpeg' Questions - Stack Overflow
  I'd like to use cuda gpu as below. But ffmpeg keep saying that Impossible to convert between the formats supported by the filter 'Parsed_hwupload_cuda_0' and the filter 'auto_scale_2' [fc#0 ⓐ 0000018ff3ff4e80] Error reinitializing filters! [fc#0 ⓐ 0000018ff3ff4e80] Task finished with error code: -40 (Function not implemented) [fc#0 ⓐ 0000018ff3ff4e80] Terminating thread with return code -40 (Function not implemented)"** *ffmpeg -y -loglevel debug -nostats -hide_banner -init_hw_device cuda=gpu:0 -hwaccel cuda -hwaccel_device gpu (...)
• 03:55
  NodeJS : Fail to write byte array input from webcam to ffmpeg spawn process - Thanesh Prabaghan Newest 'ffmpeg' Questions - Stack Overflow
  I'am using NodeJS server to display a html page which has webcam option. Once user visited to my NodeJS server, it will serve html page. User can allow webcam option and see webcam view on the page. In the backend, I send webcam stream (byte array) using socket.io. I receive byte array successfully in backend with the help of socket.io. BUT MY PROBLEM IS, I can't pipe this byte array to the ffmpeg spawn process. I don't know how to properly pipe this data to the ffmpeg. Once it done, all my problem will be solved. On the other side, I have node-media-server as RTMP server (...)
• 03:52
  ffmpeg - transcoding.c - why the last packet is discard - itisyang Newest 'ffmpeg' Questions - Stack Overflow
  Using ffmpeg examples transcoding.c. (https://github.com/FFmpeg/FFmpeg/blob/release/4.1/doc/examples/transcoding.c) This is read by ffprobe.exe (ffprobe.exe -i test.mp4 -show_packets) [PACKET] codec_type=video stream_index=0 pts=162000 pts_time=1.800000 dts=162000 dts_time=1.800000 duration=18000 duration_time=0.200000 size=238317 pos=2285176 flags=__ [/PACKET] [PACKET] codec_type=video stream_index=0 pts=180000 pts_time=2.000000 dts=180000 dts_time=2.000000 duration=18000 duration_time=0.200000 si -- https://github.com/FFmpeg/FFmpeg/blob/release/4.1/doc/examples/transcoding.c

20 mai

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

• 22:53
  How to speed-up ffmpeg encoding for the 'qtrle' codec - userxxxxxxxxx Newest 'ffmpeg' Questions - Stack Overflow
  Need you guys help for that I'm facing kinda limit of performance to encode clips with the codec 'qtrle'. In short, Is there GPU option or technic for the qtrle encoding by GPU? Can I get ANY of technic for qtrle? Does NVMe m.2 upgrade helps performance for ffmpeg concat and encoding? (Currently SKHynix P41 M.2 1TB on PCIe 4 board) (Several multiple times of re-encoding betewwen clips again again again in one loop, so that I cannot use h254 (...)
• 19:50
  Could not find ffmpeg executable, tried "/srv/linux-x64/ffmpeg" - Alan Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to run my docker image on AWS EC2 Instance. However, I am having a trouble with the image file. When I run a task in AWS ECS, it says: Could not find ffmpeg executable, tried "/srv/linux-x64/ffmpeg", "/srv/app/node_modules/ⓐffmpeg-installer/linux-x64/ffmpeg" and "/srv/app/node_modules/ⓐffmpeg-installer/linux-x64/ffmpeg" This is my Dockerfile: FROM node:latest as server WORKDIR /srv/app COPY ./server/package*.json ./ RUN apt-get update && apt-get install -y 'ffmpeg' RUN npm install COPY ./server . RUN npm run (...)
• 16:15
  Is there a way to change the ffplay playback speed while running - richjhart Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to modify ffplay 7.0 to allow us to modify the playback speed while running. Our use-case only involves basic video-only mp4 files. We can set the playback speed with something like the following: ffplay -i ..\\Video\\SampleVideoLong.mp4 -vf "setpts=5.0*PTS" -loglevel debug -sync video But I don't know how to change that option "live" (note if I don't choose -sync video, it gets very laggy - but that's fine as our use-case is video only. I have tried the following (with just a fixed rate at the moment): static double l_CurrentSpeed = (...)
• 12:34
  Render YUV frame using OpenTK [closed] - dima2012 terminator Newest 'ffmpeg' Questions - Stack Overflow
  my window Im trying to render YUV AVFrame, that i get from camera using OpenTK, im creating a rectangle and trying to apply a texture to it, but it doesnt work. Here is my window class using OpenTK.Graphics.Egl; using OpenTK.Graphics.OpenGL4; using OpenTK.Windowing.Common; using OpenTK.Windowing.Desktop; using OpenTK.Windowing.GraphicsLibraryFramework; using System; using System.Collections.Generic; using System.Diagnostics; using System.Linq; using System.Text; using System.Threading; using (...) -- my window
• 15:20
  ffmpeg: Render a two-pass MP4 timelapse video from a glob of JPEG images - algalg Newest 'ffmpeg' Questions - Stack Overflow
  In bash on an Ubuntu 22 LTS system, I have this line to make a timelapse video file from hundreds of collected JPEG images in a folder. ffmpeg -r 25 \\ -pattern_type glob -i "/some/path/input/*.jpg" \\ -vf "pad=ceil(iw/2)*2:ceil(ih/2)*2" \\ -pix_fmt yuvj420p -preset veryslow -qp 0 \\ -movflags +faststart \\ "/some/path/output/render.mp4" The input JPEGs are 4K, so the resulting video file in that same resolution, and at high quality (which is desired), renders to a very large video file (~250GB). Through trial and error, I've needed to add (...) -- this one
• 13:48
  Amplification of recorded audio in flutter app using FFMPEG not working correctly - Noman khanbhai Newest 'ffmpeg' Questions - Stack Overflow
  In my app I need to record audio and send it to server, server then sends the file to a hardware using mqtt and then file gets played on the hardware. I am using flutter to build app and using record 5.0.5 package for audio recording and for amplification ffmpeg_kit_flutter 6.0.3 package to do the amplification. The issue is it doesnt seems like there is much change in amplitude, I used different values for amplification factor but audio remains same. Here is the code for amplification Future? amplifyAudio( String inputPath, String outputPath) async // Build (...)
• 11:12
  Implement video playback using NodeJS, FFMPEG and HLS.JS - JayEm Newest 'ffmpeg' Questions - Stack Overflow
  I have RTSP stream coming from camera, which is converted to fragmented mp4 using FFMPEG. It is stored in a folder. Also manifest.m3u8 file is created using FFMPEG. I am using Hls.js player on frontend for playing the video, also using a time slider for seeking forward and backward according to timestamp on time slider. Need to dynamically generate moov file. My question is how do I implement above scenario on backend using NodeJS? I'm new to Video domain so please help. Thanks in advance. expected result should be when a user clicks on time slider on a specific (...)
• 09:24
  Showing in-video visual progress bar with FFMPEG? - Taapo Newest 'ffmpeg' Questions - Stack Overflow
  As OBS Studio lacks a visual indicator to show how far a video has progressed (and when you need to advance to the next scene), I was wondering if there is a command-line option (or solution) to get FFMPEG to re-encode the video and show a progress bar at the bottom of the video that shows how long the video has been playing so far. Is there such a feature?
• 09:20
  how to record screen using ffmpeg with variable framerate - AJ Dev Newest 'ffmpeg' Questions - Stack Overflow
  I want to record desktop using ffmpeg with variable framerate. set a limit of fps to 120fps now ffmpeg handle automatically that my max limit is 120 if pc is highly configured then record to 120 otherwise record auto fps like 5,10 whatever i searched on google i found -vsync 2 and -vsync vfr but these are not working. my command is ffmpeg -use_wallclock_as_timestamps 1 -re -vsync vfr -thread_queue_size 1024 -rtbufsize 1024 -indexmem 1024 -probesize 32 -analyzeduration 0 -framerate 120 -f rawvideo -pix_fmt rgb32 -video_size 1366x768 -i (...)
• 07:50
  FFMPEG: chroma key / greenscreen filter for images / video [closed] - user753676 Newest 'ffmpeg' Questions - Stack Overflow
  I need for a video to use chroma key filter / greenscreen filter and overlay it over another video and output it as new video.
• 02:12
  ffmpeg - how to apply filters without losing quality - Mickey Newest 'ffmpeg' Questions - Stack Overflow
  Here is a simple request, it has an input, output, and two watermarks. From what I gathered I can't apply -codec copy because I'm using a filter. ffmpeg -i input.mp4 -i wm-bl.png -i wm-br.png -filter_complex "overlay=x=0:y=H-h,overlay=x=W-w:y=H-h" output.mp4 This does the trick, as far as watermarking is concerned, but the output is compressed into half the original file size. Is it possible to watermark without losing video (...)
• 02:22
  About ffmpeg use [closed] - shijian Dong Newest 'ffmpeg' Questions - Stack Overflow
  Which version of ffmpeg supports amr_wb? ffmpeg -i D:\\test.mp4 -threads 5 -c:a amr_wb -ar 16000 -ac 1 -y D:\\test_wb.amr ->Unknown encoder 'amr_wb' generates an error when executing this command on windows: Unknown encoder 'amr_wb', but changing 'amr_WB' to 'amr_nb' will do,So I want to ask is the version not supported or something wrong。 I want to talk about converting an MP4 file to an amr_wb encoded amr (...)
• 01:20
  FFmpeg - sharpening the high pass filter - kubinka0505 Newest 'ffmpeg' Questions - Stack Overflow
  I'm writing the command that is resampling the audio file and adding the high-pass filter to it. In the software that I'm using, the high pass filter is very sharp - the problem is that I don't know how to sharpify the filter in FFmpeg. I've experimented with some options but none succeded. How can I achieve that? ffmpeg -i "Audio.wav" -ar 44100 -af highpass=f=5000 "Audio_HP.wav" -y What FFmpeg does What I (...) -- I've experimented with some options

19 mai

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

• 13:35
  ffmpeg: After using scale2ref and concat filter only part of video is encoded [closed] - Ricardo Bohner Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to select some parts of an video, concat them, and apply an overlay that should have 1/6 of the video width: ffmpeg -reinit_filter 0 -i "input.mp4" -t 12 -loop 1 -i flag.webp -an -filter_complex "[0]select='between(t,3,9)',setpts=PTS-STARTPTS[P1];[0]select='between(t,12,15)',setpts=PTS-STARTPTS[P2];[0]select='between(t,60,70)',setpts=PTS-STARTPTS[P3];[P1][P2][P3]concat=n=3:v=1:a=0[vid];[1][vid]scale2ref=w=iw/6:h=ow/mdar[flag][vid];[vid][flag]overlay=x=20:y=20:enable='between(t,1,7)'[vid]" -map [vid] -c:v libx264 -b:v 900K -y (...)
• 05:07
  How to Automatically Add Silence to a Voiceover Based on Punctuation? [closed] - Big Loot Newest 'ffmpeg' Questions - Stack Overflow
  I have a script and its voiceover. Is there a way to automatically add silence with the following durations: 1 second at each comma 2 seconds at each full stop 3 seconds at each paragraph change I've tried manually inserting silence in the audio file, but it's time-consuming and prone to errors. I'm looking for a more efficient and accurate method, possibly an automated solution, that can help streamline this (...)
• 17:17
  ffmpeg.wasm does not support nodejs - John Red Newest 'ffmpeg' Questions - Stack Overflow
  I use ffmpeg in the next js version and an error occurs Error: ffmpeg.wasm does not support nodejs "next": "14.1.4", "ⓐffmpeg/ffmpeg":"^0.12.10", "ⓐffmpeg/util": "^0.12.1", In another application this code works the only difference is the architecture in this code I am using FSD. 'use client' import FFmpeg from 'ⓐffmpeg/ffmpeg'; import fetchFile, toBlobURL from 'ⓐffmpeg/util'; import useRef, useState from 'react'; type useTranscodeProps = file: any, export const (...)
• 17:16
  Uncaught Exception: TypeError: Cannot read properties of undefined (reading 'format') - gzhe1056 Newest 'ffmpeg' Questions - Stack Overflow
  I've been having trouble with sending the video files to be read by ffprobe. I have fluent-ffmpeg and ffprobe installed but this error shows. I'm not sure what I'm missing index.js const electron = require('electron') const app, BrowserWindow, ipcMain = electron const ffmpeg = require('fluent-ffmpeg') let mainWindow // const ffmpeg = require('ⓐffmpeg-installer/ffmpeg'); // app.on('ready', function() // console.log('App is ready') // ) app.on('ready', function()  (...)
• 13:51
  How to convert CODEC of all videos in a folder from "Codec: MPEG-H Part2/HEVC (H.265) (hev1)" to "Codec: H264 - MPEG-4 AVC (part 10) (avc1)" [closed] - user25123807 Newest 'ffmpeg' Questions - Stack Overflow
  I've downloaded shows and cant get them to play on TV as the codec is not supported. H264 is a compatible codec. I have noted the codec of the videos I currently have (H256), and the codec which is compatible (264). I need help converting in bulk, all videos in a folder to the compatible codec - H264 - MPEG-4 AVC (part 10) (avc1). please help i have ffmpeg. I have tried changing the file type from mkv --> mp4 but the issue is the codec. I need help bulk converting the codec (265-->264). All the videos I am trying to convert to 264 are .mp4 (...)
• 03:19
  Convert CODEC of all videos in a folder from "Codec: MPEG-H Part2/HEVC (H.265) (hev1)" to "Codec: H264 - MPEG-4 AVC (part 10) (avc1)" [closed] - user25123807 Newest 'ffmpeg' Questions - Stack Overflow
  I've downloaded shows and cant get them to play on TV as the codec is not supported. H264 is a compatible codec. I have noted the codec of the videos in the title of this post, and the codec which is compatible (264). I need help converting in bulk, all videos in a folder to the compatible codec - H264 - MPEG-4 AVC (part 10) (avc1). please help i have ffmpeg. I have tried changing the file type from mkv --> mp4 but the issue is the codec. I need help bulk converting the codec (...)
• 04:04
  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 (...)
• 04:04
  How to record video and audio from webcam using ffmpeg on Windows? - Babu Newest 'ffmpeg' Questions - Stack Overflow
  I want to record video as well as audio from webcam using ffmpeg, I have used the following codes to know what devices are available: ffmpeg -list_devices true -f dshow -i dummy And got the result: ffmpeg version N-54082-g96b33dd Copyright (c) 2000-2013 the FFmpeg developers built on Jun 17 2013 02:05:16 with gcc 4.7.3 (GCC) configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab le-iconv --enable-libass --enable-libbluray (...)
• 03:57
  Convert m3u8 file to mp4 file in React Native Expo - DRx Newest 'ffmpeg' Questions - Stack Overflow
  How can I convert m3u8 file to mp4 file in React Native Expo? I have tried to convert m3u8 file to mp4 using FFmpegKit but I have this errors: 'Cannot read property 'getLogLevel' of null' and 'Cannot read property 'ffmpegSession' of null' Also building with this package failing (Could not determine the dependencies of task ':ffmpeg-kit-react-native:compileDebugAidl'.). Is there a simple and easy way to convert m3u8 file in React Native Expo? Code I have used: import FFmpegKit from (...)
• 01:10
  Can ffmpeg show a progress bar? - Pawan Rao Newest 'ffmpeg' Questions - Stack Overflow
  I am converting a .avi file to .flv file using ffmpeg. As it takes a long time to convert a file I would like to display a progress bar. Can someone please guide me on how to go about the same. I know that ffmpeg somehow has to output the progress in a text file and I have to read it using ajax calls. But how do I get ffmpeg to output the progress to the text file?

18 mai

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

• 08:55
  how to creating V210 encoder in pure c/c++ code [closed] - mans Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to implement V210 video encoding by writing the encoder by myself in c/c++ and not using any library. To achieve this, I am trying to see how I can create frame data and then use FFMPEG to put the frames in a video container using this command ffmpeg -s 1280x720 -f v210 -i frames.bin -c:v copy sample_video.mkv to create the frames.bin, I am creating a list of blocks based on the specifications that I found above. The code that I am using to pack YUV to the block is as follows: #pragma pack (push,1) class V210Block public:  (...) -- V210 video encoding
• 10:28
  How to stream lossy audio in chunks? [closed] - Adam Newest 'ffmpeg' Questions - Stack Overflow
  On the client side, I'm collecting periodically received audio slices into a circular buffer during the playback to avoid having to receive the entire file at once, only a small portion of its size. On server side I tried splitting MP3/M4A/OGG into frames, but even with ffmpeg, a gap is created in the chunk (usually at the beginning/end), which prevents me from validly concatenating them on the client side. Not even when I encoded the MP3 to PCM beforehand and then split the WAV file into MP3 chunks. Of course, split to WAV chunks there is no gap, but one slice is larger than (...) --
• 19:48
  I'm trying to hide information in a H264 video. When I stitch the video up, split it into frames again and try to read it, the information is lost - Wer Wer Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to create a video steganography python script. The algorithm for hiding will be... convert any video codec into h264 lossless save the audio of the video and split the h264 video into frames hide my txt secret into frame0 using LSB replacement method stitch the video back up and put in the audio ...and when I want to recover the text, I'll save the audio of the video and split the encoded h264 video into frames retrieve my hidden text from frame0 and print the text So, this is what I can do: split the (...)
• 19:42
  Edge of text clipped a few pixels in ffmpeg - THEMOUNTAINSANDTHESKIES Newest 'ffmpeg' Questions - Stack Overflow
  Trying to make a short video of a background image with text and some background audio. It's functional, but the right side of each line of my text is always clipped a few pixels. What am I missing? Here's my python code (which includes the ffmpeg command): font_size = 100 text='Example Text Example Text \\n Example Text' font_path = 'Bangers-Regular.ttf' image_path = 'background.jpg' audio_path = 'audio.wav' duration = 15 #or whatever the audio's length is output_path = (...) --
• 18:49
  FFMPEG merge continous input stream with intermittent input stream without waiting - gian848396 Newest 'ffmpeg' Questions - Stack Overflow
  My goal is to take two audio inputs and merge them. The below works for this, however, I want a continuous output stream even when only one of the two inputs are being streamed into FFmpeg. The below only produces an output when the stdin pipe input is receiving audio. Here I have an FFmpeg child process where one input is a stream from the device's microphone, the other comes from wav audio buffers sent to the server in clips by a client. ⓐInjectable() export class AppService ffmpegProcess: ChildProcessWithoutNullStreams; constructor()  (...)
• 18:19
  ffmpeg.wasm DOMException: Failed to construct 'Worker': Script at '/814.ffmpeg.js' cannot be accessed from origin '' - Quantum Newest 'ffmpeg' Questions - Stack Overflow
  I have written a google chrome extension using local ffmpegwasm files (no need to run a server or download any ffmpegwasm files), which allows users to click an injected 'download' button under Reddit videos (via content_scripts). This was working great on ffmpegwasm v11, but since migrating to v12 (latest version) I have been unable to solve the following exception which is triggered during ffmpeg.load(): as seen in chrome's console log: DOMException: Failed to construct 'Worker': Script at 'https://www.redditstatic.com/814.ffmpeg.js' cannot be (...)
• 05:42
  how to merge two mp4 files (audio & video) with ffmpeg using script? [closed] - mayor Newest 'ffmpeg' Questions - Stack Overflow
  I need a script (in win 10) that will do the following thing: Retrieve the name of the directory it is in. In this directory are placed two mp4 files - video and audio separately. The files have different names. Script will merge them using ffmpeg into one mkv (ffmpeg -i ... - i ... -c copy “the name of the directory in which the script and files.mkv”) end The idea is that I put myself this script in some directory, run it and have the job done without typing the command manually. Thank (...)

17 mai

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

• 10:12
  FFMPEG - colorkey [closed] - Acnologla Newest 'ffmpeg' Questions - Stack Overflow
  i am using the following command to remove chroma key: ffmpeg -i black.png -i video.mp4 -filter_complex '[1:v]colorkey=0x70d021:0.35:0.15[ckout];[0:v][ckout]overlay[out]' -map '[out]' video-.mp4 but it results in these strange things around her original video Out video -- original video, Out video
• 15:20
  ffmpeg: Apply a time-based expression to control lowpass, highpass, aphaser, or aecho [closed] - Wes Modes Newest 'ffmpeg' Questions - Stack Overflow
  I am constructing complexFilters to procedurally generate audio with ffmpeg via fluent-ffmpeg. The interesting part of my fluent-ffmpeg complex filters look like: "filter": "volume", "options": "volume": "min(1, max(0, ((cos(PI * t * 1 / 13) * 1 + cos(PI * t * 1 / 7) * 0.5 + cos(PI * t * 1 / 3) * 0.25) + -0.5 ) * 0.75 * -1 + 0.5))", "eval": "frame" , "inputs": "track_1_output", "outputs": "track_1_adjusted" , Note that I am using an expression to determine the volume dynamically. To simplify my tests, I'm (...)
• 23:38
  play encrypted movies in vlc by decrypting them by ffmpeg "on the fly" - doctor Newest 'ffmpeg' Questions - Stack Overflow
  I would like to play encrypted movies in vlc by decrypting them by ffmpeg like below on macOS. The size of my movie is, say, 200-1000MB. (hundreds of files) My problem is that it is too slow to decrypt; it takes 5mins for 300MB movie before it starts to play. My guess is that ffmpeg first decrypts the whole content of 300MB and then VLC plays it. My question: Is it possible to play the movie "on the fly" while decrypting it? (play the decrypted chunk once it is decrypted, Not wait until the whole movie is decrypted before it plays, so that it starts to play in, say, (...)
• 22:42
  Discord Bot Freezes and Stops Sending/Receiving Audio Buffers - Nerevaine Newest 'ffmpeg' Questions - Stack Overflow
  I'm working on a Discord bot that connects to a voice channel, listens to the audio, and sends it to a WebSocket server. Initially, everything works fine, but after some time, the bot freezes and stops sending/receiving audio buffers. After a certain period, the bot stops processing audio. There are no errors thrown, but the audio buffers stop being sent and received. Here are the key parts of the code I use to handle the connection and audio processing: let count = 0; await entersState(connection, VoiceConnectionStatus.Ready, 30000); const player = (...)
• 22:10
  Making a video with opencv and ffmpeg. How to find the right color format? - luc Newest 'ffmpeg' Questions - Stack Overflow
  I have a webcam video recorder program built with python, opencv and ffmpeg It works ok except that the color of the video is more blue than the reality. The problem seems to come from color format of images. It seems that OpenCv is giving BGR images and ffmpeg+libx264 is expecting YUV420p. I've read that YUV420p correspond to YCbCr. opencv has no conversion from BGR to YCbCr. It only has a conversion to YCrCb. I have made some searchs and tried different alternatives to try converting opencv image to something that could be ok for (...)
• 21:33
  Persistent AbortError During Reconnection Attempts in Discord Bot - Nerevaine Newest 'ffmpeg' Questions - Stack Overflow
  I'm working on a Discord bot that connects to a voice channel, listens to the audio, and sends it to a WebSocket server. Initially, everything works fine, but after some time, when I try to reconnect after losing the connection, I encounter `AbortError` repeatedly. Despite several attempts to handle this error, the problem persists. The error occurs during the reconnection attempts. Here is the error message I keep receiving: Attempting to reconnect: Try 1 of 5Reconnect attempt 2 failed: AbortError: The operation was abortedat EventTarget.abortListener (node:events:1008:14)at (...)
• 14:16
  Burning subtitles into video with ffmpeg with specific margin not working - Anthony Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to build a tool where people can position their subtitles on an HTML5 video and then I will burn the subtitles into the video for them. I can easily get the position of the subtitles, in whatever format I need, that's easy. However, no combination of values that I feed to ffmpeg are working. My holy grail is an x and y offest (aka offset 5% from the left, 10% from the bottom, in terms of video height/width). To achieve this, I would like the subtitles to start in the very bottom-left corner. ffmpeg -y -i english.mp4 -vf (...)
• 10:00
  What are all of the file extensions supported by FFmpeg - zjevander Newest 'ffmpeg' Questions - Stack Overflow
  How would I go about getting a list of all the file extensions supported by FFmpeg for use in an ExtensionFilter used by FileChooser in JavaFX? I am familiar with the "-codecs" and "-formats" options from FFmpeg, but these list the format and codec names which do not necessarily coincide with their file extensions. e.g. (partial output from "ffmpeg -formats") D aac raw ADTS AAC (Advanced Audio Coding) DE ac3 raw AC-3 E matroska Matroska parsing aac and ac3 from the output of ffmpeg would work fine to create file extensions for those (...)
• 09:28
  Convert a bash script to Windows bat script [closed] - gyandoo Newest 'ffmpeg' Questions - Stack Overflow
  I have a bash script, now I need to convert it to bat. What the script does is based on the shortcut the script checks the audio codec and video codec using ffprobe and then loops through all the files in the folder to convert the file(s) using the presets based on which one the shortcut calls. It also limits the processor usage before running ffmpeg. Here's the script: #!/bin/sh FILES="/home/red/Downloads/to_convert/*" to_convert="/home/red/Downloads/to_convert" TYPE="$1" #echo "$TYPE" if [ -e '/tmp/convert.txt' ]; then echo (...)
• 03:46
  ffmpeg: Apply a time-based expr to control intensity of lowpass, highpass, aphaser, or aecho [closed] - Wes Modes Newest 'ffmpeg' Questions - Stack Overflow
  I am procedurally constructing complexFilters for ffmpeg via fluent-ffmpeg. My fluent-ffmpeg complex filters look like: "filter": "volume", "options": "volume": "min(1, max(0, ((cos(PI * t * 1 / 13) * 1 + cos(PI * t * 1 / 7) * 0.5 + cos(PI * t * 1 / 3) * 0.25) + -0.5 ) * 0.75 * -1 + 0.5))", "eval": "frame" , "inputs": "track_1_output", "outputs": "track_1_adjusted" , Note that I am using an expression to determine the volume dynamically. Here I'm testing on the command line, to understand the (...)

16 mai

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

• 05:18
  Output file not specified [closed] - Rich Madrid Newest 'ffmpeg' Questions - Stack Overflow
  I have been messing around with ffmpeg working on basic mkv to mp4 conversions the last couple of days on my Mac and Windows computers. Mac was easier buy my windows desktop has a much faster OS so I wanted to do some conversions on it tonight. Got ffmpeg installed and working. After having some issues with the command prompt not finding the directory, I solved that with the following basic code to convert an mkv file to an mp4 for me: ffmpeg -i "C:\\Users\\Computer\\videos\\decade.mkv" "C:\\Users\\Computer\\Videos\\RJ videos\\Complete\\decade.mp4" I moved on to wanting to scale (...)
• 05:54
  fluent-ffmpeg use without installation ffmpeg in Window [closed] - Vishal Kumar Newest 'ffmpeg' Questions - Stack Overflow
  can I use fluent-ffmpeg library without installation of FFMPEG in my window PC. I try to use fluent-ffmpeg library without installation of ffmpeg in my PC so i am not able to mux audio with video file . so it is compulsory to install ffmpeg first in local sysytem ?
• 20:42
  LL-HLS (CMAF/fMP4) minimize latency with FFplay - DanielB6 Newest 'ffmpeg' Questions - Stack Overflow
  How do I minimize latency when streaming LL-HLS (CMAF/fMP4) via FFplay? I configured a live video stream which is broadcast from a media server using LL-HLS. I see the following results: HLS.js: ~2 seconds behind the source FFplay (./ffplay "https:////playlist.m3u8"): ~8 seconds behind the source FFplay (./ffplay -fflags nobuffer -flags low_delay -strict experimental "https:////playlist.m3u8"): ~5 seconds behind the source My goal is to achieve what HLS.js can achieve in a browser, ~2 seconds behind the (...)
• 17:34
  Generating timestamps in webm transport stream with ffmpeg - Vlad Feinstein Newest 'ffmpeg' Questions - Stack Overflow
  I am recording screen capture of my Electron app to a file, as suggested here: Save captured video to file in Electron It works great, but the file is a “transport stream”. I can play it in Chrome browser, but can’t adjust the time slider. The suggestion was to use ffmpeg to post-process the file. The simplest, straight-forward command I found is: ffmpeg -fflags +genpts -i in.webm out.webm I thought that this simply generates timestamps. However, the out.webm file is 15 times smaller than in.webm! I don’t see any change in the quality. The downside is - the (...)
• 18:44
  How do I configure codec parameters for a RTSP stream? - Kermit Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to stream a network camera source into /dev/video0. However, all attempts keep telling me I have set incorrect codec parameters. Any suggestions? # works ffplay rtsp://admin:passwordⓐ172.16.0.184:554/live Then trying any of these to feed into /dev/video0 (valid from list of ls /dev/video*): ffmpeg -rtsp_transport tcp -i "rtsp://admin:passwordⓐ172.16.0.184:554/live" -c:v rawvideo -pix_fmt yuv420p -f v4l2 /dev/video0 Results in ffmpeg version 5.1.4-0+rpt3+deb12u1 Copyright (c) 2000-2023 the FFmpeg developers built with gcc 12 (...)
• 16:21
  C# server problem with FFmpeg Visual Studio 2022 - seanofdead Newest 'ffmpeg' Questions - Stack Overflow
  Hello everyone I've spent countless hours on my server I'm trying to create that will share video from one stream to another client computer. That is the goal anyway. I'm using Visual Studio 2022 most recent update. Currently this is my code using System; using System.IO; using System.Net; using System.Net.Sockets; using System.Threading.Tasks; using FFmpeg.AutoGen; using NLog; public class VideoStreamServer private const int Port = 5000; private TcpListener server; private FFmpegVideoEncoder encoder; private (...) --
• 14:02
  PHP/ffmpeg (Windows 7): - Permission Denied. Tried everything, but still doesn't work - user365465 Newest 'ffmpeg' Questions - Stack Overflow
  I have a command-line PHP script that, when given the folder name as an argument when executing the script, will find all images in said folder and resize them using FFmpeg. Problem is, I always get a Permission Denied error in FFmpeg when it attempts to get at the files within the folder. This is while being on Windows 7. The big problem is that I've tried every solution that keeps popping up on the interwebs when I search for how to fix it. I've changed the settings in Avast!, did the attrib command (both as normal and "Run as Administrator") to unmark as read-only, (...)
• 12:51
  How to stop ffmpeg remotely? - Adam Newest 'ffmpeg' Questions - Stack Overflow
  I'm running ffmpeg on another machine for screen capture. I'd like to be able to stop it recording remotely. FFMPEG requires that q is pressed to stop encoding as it has to do some finalization to finish the file cleanly. I know I could kill it with kill/killall however this can lead to corrupt videos. Press [q] to stop encoding I can't find anything on google specifically for this, but some there is suggestion that echoing into /proc//fd/0 will work. I've tried this but it does not stop ffmpeg. The q is however shown in the terminal (...)
• 10:24
  how to concat multiple files using ffmpeg - user3189881 Newest 'ffmpeg' Questions - Stack Overflow
  I want to concat multiple files using ffmpeg. I have few video files, few audio files, few images and few text files. I have to concat all the files one by one. Now, I am doing on video files like this: For the videos, first I converted both the video into same resolution using this: C:/FFmpeg/bin/ffmpeg -i E:/xampp/htdocs/ffmpeg_test/v1.mp4 -f lavfi -i anullsrc -vcodec copy -acodec aac -shortest video_with_silence.mp4 Then this command: C:/FFmpeg/bin/ffmpeg -i E:/xampp/htdocs/ffmpeg_test/output3.mp4 -i E:/xampp/htdocs/ffmpeg_test/output2.mp4 (...)
• 06:54
  ffmpeg Unrecognized option 'preset' [closed] - Lalaluye Newest 'ffmpeg' Questions - Stack Overflow
  Hello I just recently upgraded ffmpeg from 4.3.1 to 7.0 and getting the following error: my command is ffmpeg -y -f image2pipe -framerate 24 -i pipe: -c:v libx264 -preset veryfast -crf 29 -pix_fmt yuv420 and getting the below error: 16 May 2024 06:43:28,979 [DEBUG] testIntent (pool-7-thread-3) ffmpeg built with gcc 7 (GCC) 16 May 2024 06:43:28,979 [DEBUG] testIntent (pool-7-thread-3) configuration: --prefix=/local/p4clients/pkgbuild-JklBW/workspace/src/FFmpeg/build/private/install 16 May 2024 06:43:28,979 [DEBUG] testIntent (pool-7-thread-3) ffmpeg (...)
• 03:29
  How FPS reduction for H264 without transcode? [duplicate] - Александр А Newest 'ffmpeg' Questions - Stack Overflow
  There is a USB camera that sends H264 frames with a frequency of 30 fps in a resolution of 1920x1080, GOP size 30 or 60 (1 or 2 I frame per second depending on the camera and only P-frames), which requires throughput of about 6 mbit/s. It is necessary to reduce this to no more than 2 mbit/s. All this is done on a weak ARMv7, so the option of transcoding is extremely resource intensive, especially considering that I did not find how to do it as a GPU Mali (NanoPi Neo Core). Given that the basic functionality is performed on the framework ffmpeg, is it possible to reduce the frame (...)

15 mai

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

• 22:11
  avpriv_h264_has_reorder_num_frame error on av_send_packet - KaisoHHH Newest 'ffmpeg' Questions - Stack Overflow
  I'm facing the error in the title which crashes my thread. int decode(AVPacket* pPacket) int count = 0; int response = avcodec_send_packet(_pCodecContext, pPacket); while(response >= 0) AVFrame* pFrame = av_frame_alloc(); response = avcodec_receive_frame(_pCodecContext, pFrame); This is the general structure of where I'm decoding the video into frames. I do use seek_frame to change position around avstream to get different frames with this: avformat_seek_file(_pFormat, -1, INT64_MIN, location, INT64_MAX, (...)
• 21:22
  ffmpeg: PNGs to mp4 video is strange scaled quicktime - v_b Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to create a video from multiple PNG files. The files contain an animation of a line. However, the output MP4 video looks really strange, as if the content is stretched or scaled. Below, you can see screenshots of one of the PNG files and the resulting video file. Some additional information: I am on a MacPro M3 w. latest MacOs updates. The images have transparent backgrounds. Command: ffmpeg -framerate 30 -pattern_type glob -i "*.png" -s:v 1600x800 -pix_fmt yuv420p -c:v libx264 result.mp4 Example PNG file: PNG (...) -- , ,
• 20:06
  How do I make my discord.py bot play a sound effect? - Kronik71 Newest 'ffmpeg' Questions - Stack Overflow
  My bot is supposed to be some sort of jeopardy quiz show type of bot. /joinvc makes the bot connect to the call, however, I cant seem to make the bot make noise when its in a vc. Here's some of the code: ⓐinteractions.slash_command( name="press", description="Press the button" ) async def press(ctx: interactions.ComponentContext): await ctx.send(f"ctx.author.mention has pressed the button") vc = ctx.author.voice.channel player = vc.create_ffmpeg_player('audiopath', after=lambda: print('done')) player.start()  (...)
• 18:32
  Using FFMPEG: How to do a Scene Change Detection? with timecode? - Mozart Newest 'ffmpeg' Questions - Stack Overflow
  Based on this article it seems that it is possible to use FFMPEG to detect scene change in videos: http://www.luckydinosaur.com/u/ffmpeg-scene-change-detector Now I have a video that displays a book text and when the text (word or sentence) is spoken it gets highlighted. Something like this audio book: https://youtu.be/lA7L6ZNVKjc I need to know the timestamp when the text gets highlighted (hence scene change), this will allow me to add timestamp tags on my youtube video, so it becomes easier for listeners to navigate through the audiobook. What is (...)
• 12:27
  Is there a way to concatenate mp4 video files in ffmpeg without video resolution switching? [closed] - Micery999 Newest 'ffmpeg' Questions - Stack Overflow
  So i tried this command from windows (echo file 'first file.mp4' & echo file 'second file.mp4' )>list.txt ffmpeg -safe 0 -f concat -i list.txt -c copy output.mp4 while making a batch file Then i concatenate two video's and as soon as the one video ended. It changes resolution, then the video player started to glitch out pixel's like in vlc. Even if i typed ffmpeg -safe 0 -f concat -i list.txt -vf scale=640:360 -c copy output.mp4 Nothing (...)
• 11:49
  How to stream webcam video over RTSP using ffmpeg on Windows 10? [closed] - let me down slowly Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to stream my laptop's webcam using RTSP protocol using ffmpeg. I am trying to simulate an actual IP Camera. I have already tried different tools already including using VidGear python package, and gstreamer but could not get it working. Note: I am on Windows 10. I have tried this command: ffmpeg -f dshow -s 320x240 -rtbufsize 2147.48M -r 30 -vcodec mjpeg -i video="HD Camera" -f rtsp -rtsp_transport tcp rtsp://localhost:8554/mystream It turns on the webcam with but prints these logs to the console: ffmpeg version 7.0-full_build-www.gyan.dev Copyright (c) (...)
• 13:41
  The system cannot find the file specified with ffmpeg - Samhita vempatti Newest 'ffmpeg' Questions - Stack Overflow
  In the process of using the ffmpeg module to edit video files i used the subprocess module The code is as follows: #trim bit import subprocess import os seconds = "4" mypath=os.path.abspath('trial.mp4') subprocess.call(['ffmpeg', '-i',mypath, '-ss', seconds, 'trimmed.mp4']) Error message: Traceback (most recent call last): File "C:\\moviepy-master\\resizer.py", line 29, in subprocess.call(['ffmpeg', '-i',mypath, '-ss', seconds, (...)
• 13:16
  'ffmpeg' is not recognized as an internal or external command, operable program or batch file [closed] - Mark S. Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to convert group of images .png to video .webm on Windows 10: ffmpeg -i %03d.png output.webm But I am getting this error: 'ffmpeg' is not recognized as an internal or external command, operable program or batch file.
• 12:48
  Flutter: How to use "ffmpeg_kit_flutter" to merge videos? - Hani Kanakri Newest 'ffmpeg' Questions - Stack Overflow
  i am using "ffmpeg_kit_flutter" to merge two videos with code import 'dart:io'; import 'package:ffmpeg_kit_flutter/ffmpeg_kit.dart'; import 'package:ffmpeg_kit_flutter/abstract_session.dart'; import 'package:ffmpeg_kit_flutter/return_code.dart'; import 'package:flutter/material.dart'; import 'package:flutter_bloc/flutter_bloc.dart'; import 'package:wechat_assets_picker/wechat_assets_picker.dart'; import (...)
• 11:15
  Multiples Cameras Rttsp to HLS [closed] - Dark Dragon Newest 'ffmpeg' Questions - Stack Overflow
  Is it possible to create a media server that will have just one endpoint that will receive several requests with camera protocols, and this server must return the stream from these cameras formatted? Knowing that the front end will take these camera streams and place them in the browser I Still searching about the subject
• 12:21
  Problems with Python's azure.cognitiveservices.speech when installing together with FFmpeg in a Linux web app - Kakobo kakobo Newest 'ffmpeg' Questions - Stack Overflow
  I need some help. I'm building an web app that takes any audio format, converts into a .wav file and then passes it to 'azure.cognitiveservices.speech' for transcription.I'm building the web app via a container Dockerfile as I need to install ffmpeg to be able to convert non ".wav" audio files to ".wav" (as azure speech services only process wav files). For some odd reason, the 'speechsdk' class of 'azure.cognitiveservices.speech' fails to work when I install ffmpeg in the web app. The class works perfectly fine when I install it without ffpmeg (...)
• 08:34
  Can't show image with opencv when importing av - Flojomojo Newest 'ffmpeg' Questions - Stack Overflow
  When importing the PyAv module, I am unable to show an image with opencv using imshow() Code without the PyAv module (works as expected) import cv2 img = cv2.imread("test_image.jpeg") cv2.imshow('image', img) cv2.waitKey(0) Code with the import (doesn't work, just hangs) import cv2 import av img = cv2.imread("test_image.jpeg") cv2.imshow('image', img) cv2.waitKey(0) OS: Linux arch 5.18.3-arch1-1 #1 SMP PREEMPT_DYNAMIC Thu, 09 Jun 2022 16:14:10 +0000 x86_64 GNU/Linux Am I doing (...)
• 06:43
  adding one video after certain time and - Jaga G Newest 'ffmpeg' Questions - Stack Overflow
  I have two videos. If one video length is 42 minutes 35 seconds and another video length is 46 seconds, now I need to add this 46 second video after every three minutes 50 seconds so that the added video should be exported as a separate video. After every three minutes and 50 seconds, those 46 seconds of video should be added and a separate video should be exported. This should be done for a total of 42 minutes and 35 seconds of video. Does this happen in FFMPEG? how to add the (...)

14 mai

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

• 19:17
  "No accelerated colorspace conversion found from yuv420p to bgr24" when using OpenCV with FFMPEG on mac - Itay k Newest 'ffmpeg' Questions - Stack Overflow
  When trying to acquire a frame from a video file (I've tried several video formats) I am getting an error message "No accelerated colorspace conversion found from yuv420p to bgr24". The exact same code ran perfectly fine on a windows machine and I couldn't get it to run on a mac even after I recompiled and installed FFMPEG and OpenCV. I am using lion for my OS. Any ideas?
• 17:15
  Merge videos on computer automatically - Skyturkish Newest 'ffmpeg' Questions - Stack Overflow
  I have some videos regularly downloaded to my computer, these are short videos, around 10-15 seconds each. I usually use https://online-video-cutter.com/merge-videos to merge them, and it serves my purpose well. I just drag and drop the videos I want and hit the download button without any additional steps. My goal is to automate this process, so I thought I could merge the videos locally on my computer using ffmpeg. I've tried with JavaScript libraries like ffmpeg-static and ffmpeg-fluent, but I couldn't get the desired result; I keep encountering an error. What I (...) -- https://online-video-cutter.com/merge-videos