Convert mp4 to mp3 + calling command line programs from Processing

Hi! I was asked how to get the audio out of a video file, so I shared this little program:

It also serves as an example of calling any command line program. There's thousands of command line programs to do all kinds of audio, video and image manipulation. It's like a massive Processing library :) A bit geeky, but powerful.

Some media related command line tools:

What other tools should be in this list?


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