FFmpeg

FFmpeg: A handy tool for converting, streaming and recording video and sound.

A handy tool for converting, streaming and recording video and sound.

ffmpeg is a very fast video and audio converter that can also grab from a live audio/video source. It can also convert between arbitrary sample rates and resize video on the fly with a high quality polyphase filter.

The command line interface is designed to be intuitive, in the sense that ffmpeg tries to figure out all parameters that can possibly be derived automatically. You usually only have to specify the target bitrate you want.

Get FFmpeg and try it for yourself to see what its all about!