Anyone know any good free video compression software?

[Dudeman]

Yeah, pretty much said it all in the title. Has to be able to compress AVI without losing any video quality

[tokage]

Maybe virtualdub will do what you need.

[merlin1991]

MeGUI is the most comprehensive GUI based ISO MPEG-4 solution. It suports MPEG-4 ASP (xvid), MPEG-4 AVC (x264), AAC, MP2, MP3, Vorbis, AC3 audio and various common containers support (MP4, MKV, AVI, M2TS).

http://sourceforge.net/projects/megui/

without losing any video quality

if you really want to loose no quality @ all you gotta go for stuff like http://en.wikipedia.org/wiki/Huffyuv

[Untadaike]

Try the free version of Leawo Video Converter.

PC page: http://www.leawo.com/leawo-video-converter/
Mac page: http://www.leawo.com/free-mac-video-converter/

[Jendraz]

MPEG Streamclip.

[alexnikle]

Try the free version of Leawo Video Converter.

PC page: http://www.leawo.com/leawo-video-converter/
Mac page: http://www.leawo.com/free-mac-video-converter/

yeah, i have tried Leawo Video Converter, it works great.

[jacksonp]

I think the best option for you is to use a Blaze Media Pro software or the Sorenson Squeeze Compression Suite 4.5 for compressing any kind of video file...I have used both of them and they are completely awesome.

[wiweeyum]

Use RealPlayer Converter. It's good.