3 October

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

• 11:44
  How to use Intel Quick Sync/iGPU in OVH dedicated server - Meir Newest 'ffmpeg' Questions - Stack Overflow
  I have a dedicated server with the following HW: CPU: Intel(R) Xeon(R) E-2386G CPU ⓐ 3.50GHz Motherboard: Manufacturer: ASRockRack, Product Name: E3C252D4U-2T/OVH According to the Intel website, E-2386G has Intel Quick Sync, and I want to use it. I tried to check which VGA I have in the system (expected to see Intel + the local), and this is the output: 05:00.0 VGA compatible controller: ASPEED Technology, Inc. ASPEED Graphics Family (rev 41) I.e., the Intel iGPU doesn't recognize at all in the system, I tried to check in /dev/dri what are the (...)
• 10:37
  FFMPEG audio through strip, cut, concate is out of sync - Cospel Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to solve several use-cases, first is stripping audio out of the video (.mov, .mp4, .mkv, ...). I'm using this command (for removing video stream and copying audio stream): ffmpeg -i movie.mov -vn -c:a copy strip_audio.aac However, the resulting audio (strip_audio.aac) is shorter (by a few ms) than audio detached from movie.mov in iMovie. strip_audio.aac is also progressively out of sync. See screenshot below, btw video audio and strip_audio.acc. The second problem is that I'm trying to divide the video into small segments (3 seconds) and then (...) -- , repository
• 10:02
  ffmpeg -f sdl works, ffmpeg -c codec -f sdl doesn't - lunadir Newest 'ffmpeg' Questions - Stack Overflow
  running on windows anyone knows why this works ffmpeg -re -i "sample_itunes.mp4" -an -f sdl2 - and this doesn't ffmpeg -re -i "sample_itunes.mp4" -an -c libx264 -f sdl2 - doesn't show any window, output is ffmpeg.exe -re -i "sample_itunes.mp4" -an -c libx264 -r 1 -f sdl2 - ffmpeg version n4.4-79-gde1132a891-20210803 Copyright (c) 2000-2021 the FFmpeg developers built with gcc 10-win32 (GCC) 20210408 configuration: --prefix=/ffbuild/prefix --pkg-config-flags=--static --pkg-config=pkg-config --cross-prefix=x86_64-w64-mingw32- (...)
• 08:23
  Bash command not found and bad substitution error [duplicate] - TheRedM Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to run this ffmpeg bash script #!/bin/bash MUSIC_FOLDER='audio/' VIDEO=loop.m4v RTMP_SERVERS="RTMPLINK" while true; do $SRT = find $MUSIC_FOLDER -type f -maxdepth 2 -name "*.srt" | shuf -n 1; ffmpeg -hide_banner -i $(find -type f -maxdepth 2 -name $$SRT:-4) -vn -acodec copy -f mpegts - ; done | mbuffer -q -c -m 20000k | (ffmpeg -hide_banner \\ -stream_loop -1 -i $VIDEO -i $SRT \\ -err_detect explode \\ -i pipe:0 \\ -map 0:v \\ -map 1:a \\ -pix_fmt yuv420p \\ -s 1920x1080 \\ -b:v 5000k (...)
• 05:27
  Pipe raw OpenCV images to FFmpeg - BrianTheLion Newest 'ffmpeg' Questions - Stack Overflow
  Here's a fairly straightforward example of reading off a web cam using OpenCV's python bindings: '''capture.py''' import cv, sys cap = cv.CaptureFromCAM(0) # 0 is for /dev/video0 while True : if not cv.GrabFrame(cap) : break frame = cv.RetrieveFrame(cap) sys.stdout.write( frame.tostring() ) Now I want to pipe the output to ffmpeg as in: $ python capture.py | ffmpeg -f image2pipe -pix_fmt bgr8 -i - -s 640x480 foo.avi Sadly, I can't get the ffmpeg magic incantation quite right (...)
• 04:51
  FFMPEG multi livestream - recorded stream send to different services like YT and Twitch at different time (on different button clicks ) - Ganesh Newest 'ffmpeg' Questions - Stack Overflow
  Trying for the last 10 days and still no success, I am creating a python application that will accept the URL and visit that URL using chromium, capture that screen and send that real-time screen recording to different live stream acceptors as youtube live, twitch Twitter, Facebook live or some other sources and many of these could be multiple. There are two challenges (both challenges depend on a user action like different button clicks) - The time of starting the Livestream we know only one Livestream acceptor and other acceptors could be sent via another API at any time (...)
• 04:50
  Get last 30 seconds of HLS stream with FFMPEG - aamirnshah Newest 'ffmpeg' Questions - Stack Overflow
  I have a live HLS stream which has not yet ended. I am trying to extract the last 30 seconds (now minus 30 seconds clip) I tried ffmpeg -sseof -30 -i audio.m3u8 -acodec copy -vcodec copy out.mp4 but this does not work since the audio clip has not ended. Any suggestions?
• 01:49
  How to see the full options for 264 (non nvenc) in FFMPEG? [closed] - BuddyBoneJones Newest 'ffmpeg' Questions - Stack Overflow
  How can I access the full detailed options of 264? "ffmpeg.exe -h encoder=libx264" isn't telling me what all the options of preset are, for 264 specifically. Not sure how to do the fullhelp for specifically 264. Sorry, an amateur at this stuff. What I'm seeing. -- What I'm seeing.
• 01:32
  FFMPEG crop a portrait image square with respect to the zoomed dimensions and x/y pan - hugger Newest 'ffmpeg' Questions - Stack Overflow
  I am making a photo crop component for my mobile app. If an image is selected from the image picker and it is above 4:5 ratio, using FFMPEG I need to crop this image 1:1 using the dynamic X/Y values along with the scale value from pinching (1.00 - 10). I trying to use these values with the FFMPEG crop/scale filter, but no matter what I try I cant seem to get the crop to work as expected... It is not matching up from the UI pan / zoom. My FFMPEG command looks like this, along with some other relevant variable code: let zoom = this._scale.__getValue(); //set dynamically (...)

2 October

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

• 23:03
  Detect if "faststart" has been applied to video - Will Ashworth Newest 'ffmpeg' Questions - Stack Overflow
  When running "qt-faststart" on an MP4, you're essentially taking the meta data from the back and placing it at the front of the file. In my case, so Flash can properly start playing the video before it's fully done loading. I have a large number of videos that I'm running through a shell script to encode overnight. When I upload, however, I won't necessarily know in my final folder of videos (on the server) have "qt-faststart" run on it. My goal is to find the straggler videos and run qt-faststart on them manually, but I'll need a way to (...)
• 22:37
  Using ffmpeg to change framerate - J Brand Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to convert a video clip (MP4, yuv420p) from 30 fps to 24 fps. The number of frames is correct so my output should change from 20 minutes at 30fps to 25 minutes at 24fps. Everything else should remain the same. Try as I might everything I try with ffmpeg converts the frame rate but changes the number of frames to keep the same duration or changes the duration without altering the framerate. So I have been typically trying things like; ffmpeg -y -r 30 -i seeing_noaudio.mp4 -r 24 seeing.mp4 (I'm doing this on windows but normally (...)
• 21:29
  How do you use FFMPEG to transcode h264_qsv from Apple PRORES Quicktime? - RCJetPilot Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to transcode an Apple Prores 444 to H.264 using qsv without success. If I use this command line: ffmpeg -i 10minute_Pipeline_Test.mov -c:v h264_qsv -c:a aac -pix_fmt qsv chris.mp4 I get: ffmpeg version 4.2.1 Copyright (c) 2000-2019 the FFmpeg developers built with gcc 9 (Ubuntu 9.3.0-17ubuntu1~20.04) configuration: --prefix=/root/ffmpeg_build --extra-cflags=-I/root/ffmpeg_build/include --extra-ldflags=-L/root/ffmpeg_build/lib --bindir=/root/bin --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libmp3lame --enable-nonfree (...) -- https://www.dropbox.com/s/ejrfzad20yzaifm/10minute_Pipeline_Test.mov?dl=1
• 20:10
  ffmpeg - Sync Audio with image position (Audio Slideshow) - dazzafact Newest 'ffmpeg' Questions - Stack Overflow
  How can i start the audio Files at the same position as the pictures? (This is for a Image slideShow with changing Audio) ffmpeg -loop 1 -t 19 -i 1.jpg -loop 1 -t 19 -i 2.jpg -i 1.mp3 -i 2.mp3 -filter_complex " [0:a]adelay=19s:all=1[1a]; [1:a]adelay=24s:all=1[2a]; [0:v]scale=1280:720,pad=1280:720:(ow-iw)/2:(oh-ih)/2,setsar=1[0p]; [1:v]scale=1280:720,pad=1280:720:(ow-iw)/2:(oh-ih)/2,setsar=1[1p]; [0p][1p]xfade=transition=fade:duration=1:offset=19[1x]; -map [1x] -c:v libx264 -c:a copy -t 39 (...)
• 18:08
  Cutting the videos based on start and end time using ffmpeg - Kalaiyarasan Newest 'ffmpeg' Questions - Stack Overflow
  I tried to cut the video using the start and end time of the video by using the following command ffmpeg -ss 00:00:03 -t 00:00:08 -i movie.mp4 -acodec copy -vcodec copy -async 1 cut.mp4 By using the above command i want to cut the video from 00:00:03 to 00:00:08. But it is not cutting the video between those times instead of that it is cutting the video with first 11 seconds. can anyone help me how resolve this? Edit 1: I have tried to cut by using the following command which is suggested by mark4o ffmpeg -i movie.mp4 -ss 00:00:03 -t 00:00:08 -async 1 (...)
• 15:51
  ffmpeg - Sync Audio with image position - dazzafact Newest 'ffmpeg' Questions - Stack Overflow
  How can i start the audio Files at the same position as the pictures? (This is for a Image slideShow with changing Audio) ffmpeg -loop 1 -t 19 -i 1.jpg -loop 1 -t 19 -i 2.jpg -i 1.mp3 -i 2.mp3 -filter_complex " [0:a]adelay=19s:all=1[1a]; [1:a]adelay=24s:all=1[2a]; [0:v]scale=1280:720,pad=1280:720:(ow-iw)/2:(oh-ih)/2,setsar=1[0p]; [1:v]scale=1280:720,pad=1280:720:(ow-iw)/2:(oh-ih)/2,setsar=1[1p]; [0p][1p]xfade=transition=fade:duration=1:offset=19[1x]; -map [1x] -c:v libx264 -c:a copy -t 39 (...)