I have a perfectly standard AVC/2ch LC-AAC in .mp4 that I know my 360 can play (moving it to a USB stick and playing from there worked flawlessly). However, UMS starts transcoding it when I attempt to play it, and if I add mp4 to the list of file extensions to force direct playback on, it just won't start playing the file at all . What do?

Please help.

I didn't find the right solution from the internet.

Web video quote

Thank you