Format | MP4
While we like MP4 the best, we will generally accept any of the following formats: 3g2, 3gp, 3gp2, 3gpp, asf, asx, avi, divx, mts, m2t, m2ts, m2v, m4v, mkv, mov, mp4, mpe, mpeg, mpg, ogg, wmv.
Resolution | 640x480 (SD) 1280x720 (HD)
640x480 for standard definition 4:3 video, 853x480 for widescreen DV, and 1280x720 or 1920x1080 for high definition. If you have the option to control the pixel aspect ratio (not display aspect ratio) make sure it's set to "1:1" or "1.00", also sometimes called "square pixels."