Convert Videos, Extract Audio from Videos and The Like

Just a short note on this right now:

Audio can be extracted with mplayer using -dumpaudio option (low quality), ffmpeg tool with -ab and -ar options or online for youtube videos at vixy.net.

Quick video converter flv2mpg using ffmpeg is shown at Linux by Example, too.

Update: Another great open source program is MediaCoder which even has a special audio edition.

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