Can I play movies from My Passport (1TB) on the Xbox 360 and/or PlayStation 3?

i was formatted in fat32 and it didnt work. i reformatted, using my 360 to reformat, and it works. although, it takes liek 10 seconds for my computer / 360 to recognize the drive, which seems like quite a while. also, it won’t play mpgs /mpegs - just avis and mp4s  and WMVs - is this normal ? i thought i had previously been able to play everything but MKV’s - but ive been away from my xbox for a few months and dont remember exactly.