I've searched the web for weeks looking for an answer to this and turned up nothing, so I thought I'd ask here. Is there a file format and container that can be dropped into iDVD without any encoding necessary? I assume it would be some flavor of MPEG-2, but I can't find the documentation that would tell me exactly the specs that iDVD would like. My plan is to run files such as MKVs and AVIs through ffmpegX before running them through iDVD. Mainly, I'm looking for speed of conversion and burning. Thanks in advance for your help on this and for any other tips you might have for me!