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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
Select the first file you want to join, and then click in "Append" to add the next files. You could select several options but just to try click tell it where you want the new file and click "Start muxing". It should generate a MKV file, play it and look if the audio is out of sync.
Audio Sync issues using various MP4Box tools - VideoHelp
https://forum.videohelp.com/threads/362735-Audio-Sync-issues-using-various-MP4Box-tools
Audio Sync issues using various MP4Box tools + Reply to Thread. Results 1 to 7 of 7 ... Join Date Mar 2006 Location United States. Im trying to put an FLV file in an MP4 container i extracted using FLVExtract i have tried yamb and mymp4box and each time audio is out of sync
mp4box man page - gpac - General Commands | ManKier
https://www.mankier.com/1/mp4box
Combine audio from one file and video from another: mp4box -add input1.mp4#audio -add input2.mp4#video output.mp4; tldr.sh. Synopsis. MP4Box [options] [file] [options] General Options. MP4Box is a multimedia packager, with a vast number of functionalities: conversion, splitting, hinting, dumping, DASH-ing, encryption and others.
mp4box - Playing audio.mpd and video.mpd together in …
https://stackoverflow.com/questions/35838771/playing-audio-mpd-and-video-mpd-together-in-dash-js
Insert both <AdaptationSet> s in a new MPD under <Period>. Alternately execute the following command-line to make it in one pass: MP4Box -dash 5000 -frag 5000 -rap -bs-switching no -profile dashavc264:live -segment-name $2_segment_ -out ./mpds/$2_video.mpd $2.mp4#video:baseURL=video $2.mp4#audio:baseURL=audio. Share.
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