[FFmpeg-user] FFMPEG - Concatenate 2 MP4 Files, one has video and audio and the other has only audio

Carl Eugen Hoyos cehoyos at ag.or.at
Wed Jul 6 14:17:48 CEST 2016

Avinash Jairam <avinashjairam <at> gmail.com> writes:

> I am trying to merge 2 mp4 files using FFMPEG

Do you want to "merge" or to "concatenate" two mp4 files?
The concat demuxer can only be used for concatenation, 
merging is done with something like:
$ ffmpeg -i file1 -i file2 -map 0 -map 1 ...

Carl Eugen

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