The way to run avidemux from command-line was learned by me from, although they do not mention the Python scripts, only the JS ones (which didn't work for me). If you want to extract a portion of audio from a video use the -ss option to specify the starting timestamp, and the -t option to specify the encoding duration, eg from 3 minutes and 5 seconds in for 45 seconds: ffmpeg -i sample.avi -ss 00:03:05 -t 00:00:45.0 -q:a 0 -map a sample.mp3 The timestamps need to be in HH:MM:SS.xxx format or in seconds. It copies everything, but drops all but the needed audio track.

Then I ran a batch conversion of many files with a command like this one: for f in *.avi do avidemux3_cli -nogui -load '$f' -run. ffmpeg -i sample.avi -q:a 0 -map a sample.mp3 Level up your programming skills with exercises across 52 languages, and insightful discussion with our dedicated team of welcoming mentors. I removed everything unrelated (a dozen of unneeded lines), and this is what I got in my some_series.py: #PY <- Needed to identify # I've looked at what kind of projects are saved as SpiderMonkey or TinyPy projetcs for my actions, and it turned out that the SpiderMonkey (JavaScript) project lacks the audio track selection actions which I needed, but the TinyPy (Python) project did have them. (In Avidemux GUI, as decribed in above, you simply select/unselect the audio tracks, and save the file.

Ffmpeg extract audio from avi