A recent XBox360 update enabled streaming of .avi files from WMP11 direct to TV, via wireless network.

However, my Canon IS2 video .avi files won't play !

After a bit of Googling, I think I've found out why - they are Motion JPEG encoded avi (not MPEG4 encoded).

If this is the problem, is there a workaround (preferably without having to convert all my .avi files) ?