best free video cutter, editor, compressor - avidemux

I recently came across this FREE video converter, editing, cutting, encoding software - it is the best free video cutter, editor, compressor - avidemux

Amazingly quick and versatile. Tons of youtube tutorial to teach you how to use them.

http://avidemux.sourceforge.net/

I used it for the followings:
1. Convert video format from video.mov to video.mp4 for iphone watching.
2. Cut out the bad parts in a video.
3. Compress it 100 times smaller so I can upload the video into youtube quicker.
4. Mute the voice of a recorded video.
5.