[Mp4-tech] Players that support core profile audio video objects

[Stefan A. Goor]

Hey All,
Just wondering if anyone knows if there is a player that will play
arbitrarily shaped video objects composed into a scene?
I have used the IBM software and can create and play .mp4 files that contain
rectangular video but the player will not accept arbitrarily shaped objects
(possibly I am using the software incorrectly but I don't think so).
Also does the IM1-Player support any other video format than h263, I have
not managed to create any video other than that format that will play in it,
Many thanks,
Stefan