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Can FFmpeg Sync Audio And Video? Solved!
https://videoconverter.wondershare.com/sync-audio/ffmpeg-sync-audio-and-video.html
Part 3. The Easiest FFmpeg Alternative to Sync Audio and Video. If you feel it is hard to use FFmpeg sync audio and video, here comes an easier tool for you - Wondershare UniConverter, which is not only an powerful video conveter but an easy to use video editor with multiple value-added features, such as Sync Audio, Smart Trim, Subtitle Editor ...
FFMPEG Fix Audio Sync – Uly.me
https://uly.me/ffmpeg-fix-audio-sync/
If you have a video with audio sync issues, you can easily fix it using ffmpeg. It takes 2 inputs: the filename and delay: 0.100 is 100 ms or 0.1 seconds. Output file has -fixed appended to it. It’s fast. Only takes 2-3 seconds to process a 1.5 hour recording. Here’s the script.
Audio Video Sync With ffmpeg - Stack Overflow
https://stackoverflow.com/questions/13902507/audio-video-sync-with-ffmpeg
ffmpeg -i input.avi -vn -ac 2 -ar 48000 -ab 448k -f mp3 audio.mp3. Then you need to divide the whole length of the video file (in seconds) by the actual length of the video stream (the time when the video stops and you can just hear the audio). You should get a number a little above 1 (1.12 or something like that).
#735 (Incorrect DTS sync in OGG codec) – FFmpeg
https://trac.ffmpeg.org/ticket/735
Noticed that the last one "out2.ogv" gets the audio completely out of sync by the end of the clip (I view it using VLC). Here are the commands I used to generate them: $ ffmpeg -i in.mp4 -vcodec libtheora -b 1000k -acodec libvorbis out.ogv. ffmpeg version 0.8.7, Copyright (c) 2000-2011 the FFmpeg developers.
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