Mp4box Audio Sync

conversion - Synchronizing audio and video using MP4Box ...

https://superuser.com/questions/35896/synchronizing-audio-and-video-using-mp4box-ffmpeg-to-concatenate-files#:~:text=For%20correct%20synchronization%20you%20have%20to%20write%20the,using%20-cat%20use%20-add%20before%20the%20first%20video.

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conversion - Synchronizing audio and video using MP4Box ...

https://superuser.com/questions/35896/synchronizing-audio-and-video-using-mp4box-ffmpeg-to-concatenate-files

For correct synchronization you have to write the MP4Box command as follows: MP4Box -add file1.mp4 -cat file2.mp4 -new output_file.mp4. instead of using -cat use -add before the first video. The remaining options are correct and you can put -new before the output video parameter. Share.

How do I merge MP4 files without audio going out of sync?

https://superuser.com/questions/76228/how-do-i-merge-mp4-files-without-audio-going-out-of-sync

Try the latest SVN build MuldeR builds, I've never had a problem of not synced audio with it. Anyway, as the container is mp4 mp4box may come handy. I suggest you use the latest development build (0.4.6 at the time of writing). If you need a GUI frontend for it, take a look at YAMB or My MP4box GUI.

MP4box moves the video stream by 67ms causing AV …

https://github.com/gpac/gpac/issues/648

Video/audio out of sync during play · Issue #996 · gpac ...

https://github.com/gpac/gpac/issues/996

audio delay with mp4box - Doom9's Forum

https://forum.doom9.org/showthread.php?t=145435

mp4box man page - gpac - General Commands | ManKier

https://www.mankier.com/1/mp4box

My MP4Box GUI 0.6.0.6 Free Download - VideoHelp

https://www.videohelp.com/software/My-MP4Box-GUI

MP4Box is an MP4 muxer. It can import MPEG-4 video (H.264 or ASP, encoded for example with x264, DivX, Xvid, 3ivx or FFmpeg) and audio streams into the MP4 container. The end result is ISO compliant MP4 streams. It can also produce MPEG-4 Timed Text streams by importing subtitles formats such as srt.

Demuxing audio tracks from .mp4 using mp4box - Stack …

https://stackoverflow.com/questions/34337545/demuxing-audio-tracks-from-mp4-using-mp4box