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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.
Using MP4Box to concatenate many .h264 files into one MP4 file
https://www.ryancheley.com/2018/02/08/using-mp4box-to-concatenate-many-h264-files-into-one-mp4-file/
Using MP4Box to concatenate many .h264 files into one MP4 file. Tweet. The general form of the concatenate command for MP4Box is: MP4Box -add <filename>.ext -cat <filename>.ext output.ext 1. When you have more than a couple of output files, you’re going to want to automate that -cat part as much as possible because let’s face it, writing ...
mp4box: MPEG-4 Systems Toolbox - Linux Man Pages (1)
https://www.systutorials.com/docs/linux/man/1-mp4box/
-cat <src_file> concatenates all src_file tracks to input file, creating it if not exisiting. Media samples are added at the end of existing compatible tracks. If no compatible track is found for a media it is created. Up to 20 cumulated -cat operations can be used. Syntax is the same as -add. …
mp4box man page - gpac - General Commands | ManKier
https://www.mankier.com/1/mp4box
mp4box - Man Page. GPAC command-line media packager. Examples (TL;DR) Display information about an existing MP4 file: mp4box -info filename Add an SRT subtitle file into an MP4 file: mp4box -add input_subs.srt:lang=eng -add input.mp4 output.mp4 Combine audio from one file and video from another: mp4box -add input1.mp4#audio -add input2.mp4#video output.mp4 …
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 Audio Sync issues using various MP4Box tools. Thread Tools. Show Printable Version; ... 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
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