I am about to start releasing videos on an rss feed (before I just stuck them on youtube). So, for a video cast, if I just chose one format which was likely to please the highest number of people, which would it be? I think most people will find this through itunes, and I imagine will watch it through itunes or quicktime and on video ipods. I am currently thinking of either mp4 or .mov, both encoded with h264. Any thoughts on which to go for? Also, I want to have just a 320 wide file, but should I really think about 640 wide too for those apple tv etc owners? Thanks in advance for any help.