“ffmpeg is the industrial-strength, fully free, fully open-source, fully cross-platform do-everything video library for Mac, Windows, and Linux. We’ve seen some basic recipes for splitting video and audio. We’vecovered how to use it on Windows.
But via comments, here’s more ffmpeg goodness than you can possibly handle. It reveals that ffmpeg’s GUI-less, bare-bones command line is an asset, not a liability. Type one line, accomplish anything, get your work done. ffmpeg may be our last, best hope to make sense of a chaotic video world.” -CDM
To me ffmpeg is in its most basic form a really free form approach to video conversion – almost to the point that makes me worried about it’s ability to “catch on”