Is DivX, XviD and AVC (H.264) all MPEG-4? What's the difference?

[3riCa]

I saw that DivX is MPEG-4 and AVC is MPEG-4 and XviD is MPEG-4 but what is the difference with all of them? By the way, what is regular MPEG-4?

>> Oh and if they are all MPEG-4 and the iPod Touch is an MPEG-4 player, would that mean that I can play AVC, XviD and DivX on my iPod (given that they are *.mp4, 640x480 resolution and that they are 1000 kbps or less)

[Charlie]

they have to be mp4 files to load on the ipod. different movie rippers give different file names to the files ripped, but the importand part is the extension , the part after the period.

like a .mpeg is different than .mp4

[Charlie]

they have to be mp4 files to load on the ipod. different movie rippers give different file names to the files ripped, but the importand part is the extension , the part after the period.

like a .mpeg is different than .mp4