Video formats for Galleries - MGP, Tube
 

Let's say we have standard MGP galleries, 3-4 videos with thumbs. What video format is good to use: mp4, wmv, avi? What encoding? DIVX, XVID, .264?
What video duration per clip is optimal: 10, 20, 30 sec?
What video resolution is the optimal one?
What bitrate is wise to use, so it's enough to tease but not to wank :D

Then again, maybe it's a good idea for legal tubes to make galleries with FLV videos played with video player.. What do you say?