How to make movie file size smaller?

[Cleo]

We were using Compressor which comes with Final Cut Pro but it didn't do widescreen mpegs only 4:3 ones so we got Compression Master which turns out to be a lot faster, has a better interface, and seem to make the files even smaller while keeping them looking better. They have a demo for you to try and it becomes the actually software if you buy a key.