Encoding a video to the following specs and loading it on the EVO plays with the included video player perfectly. No jumping and clear, in sync sound. 720p resolution so the HDMI out should work once the cables are available. h.264 at Level 3.1, 3 reference frames and baseline profile. 1280 x 720 AAC stereo audio at 44100Hz, 128kbps Bit rate does not seem to be all that important as long as the video file is less than 2GB. Muxed to an mp4 container in IMSA standard format and optimized for streaming. WOOT!