[M4IF Technotes] simple profile video decoder open questions

[Ariel David]

Hi,
I am trying to build a simple-profile video decoder.
I am trying to figure out exactly what functions this decoder should support.
Another open question about Simple profile has to do with VOPs.  
I know that SP   L1 and up can support up to 4 VOPs.  
I can't find any documentation in the standards or in any other place on how to reconstruct multiple VOPs.
Here are my open issues if someone can help.
1.  Should it support Quatization types 1 and 2 ?
2.  Should it support Quarter pel Motion compensation ?
3.  Should it support Global motion compensation ?
4.  Shoudl it support Pixel precision 4-12bit ?
6.  Can VOPs overlap?  If so then should the decoder support transparent blocks and macroblocks?
7.  If VOPs do not overlap then is there anything else between VOPs that I should take care of?
I hope someone has answers because there is no specific answer in the standard.
Thanks,
Ariel
-------------- next part --------------
An HTML attachment was scrubbed...
URL: /pipermail/mp4-tech/attachments/20030505/12d5939d/attachment.html