Divx compilance with ISO MPEG4

[zloyvov]

Hello! Excuse me for a newbie question. Is Divx bitstream syntax compilant with ISO MPEG4 standard? If not - is it possible to get a DIVX bitstream syntax description for free (for educational purposes)?

[Sharktooth]

It is but it also contains some "workarounds" for the Video For Windows interface (search for Packed Bitstream).

[zloyvov]

I've read the link http://forum.doom9.org/showthread.php?s=&threadid=72903
As far as I understood, packed bitstream is the way how frames are packed in AVI file. If I extract a DIVX bitstream from AVI - will there be any difference between packed and not packed? As far as I understand - no. Am I right?

[chilledoutuk]

yes i think so

[bond]

As far as I understood, packed bitstream is the way how frames are packed in AVI file. If I extract a DIVX bitstream from AVI - will there be any difference between packed and not packed?yes, a plainly extracted raw bitstream which has been "packed" in avi will be borked and filled with garbadge n-vops, for the details use search