[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 09:09:52 CEST 2016

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

> I am trying to [concat] 2 mp4 files using FFMPEG. One of these 
> files has both video and audio (track1.mp4), while the other 
> one has only audio 

This is not supported, see 

What would you have expected as output?

Carl Eugen

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