I just wanted to point On2's VP3 codec that has been released in source form yesterday because it did not get as much press as it deserved, IMHO. VP3 is a very good codec with MPEG4-like quality, even if it is not their latest version (VP4). The license is a MPL with a compatibility clause: you are not allowed to take the code or use their patents to build something, that does not (also) encode or decode VP3 streams. While not perfect, it should be good enough to make me happy. It is at least better than the MPEG codecs that are poisened with patents. The source code has not been ported to Linux/Unix yet though, they just released the source for their Quicktime and VfW codecs.