ffmpeg merge streams

ffmpeg-merge-streams.md

ffmpeg merge streams

1. Write an ffmpeg input configuration file list.txt of the form:

file '<input-1>'
file '<input-2>'
file '<input-3>'
...

2. Run ffmpeg -f concat -safe 0 -i list.txt -c copy <output>

ffmpeg has a quirk in which it rejects perfectly ordinary input paths by default, requiring the boilerplate -safe 0 option to work with real world file paths.