AVC with pull down flags?

[phloyd]

Hi there,

This is a very technical question that I fully expect to go unanswered but I am gonna give it a shot since it is driving me nuts.

Q: How does the AVC stream handle 23.976 fps progressive frame encoding with pulldown hint flags to give 29.97 fps interlaced output?

Obviously it has to be able to do this in order to encode HD DVDs, but I can't for the life of me find any reference to this obviously common practice in the ITU spec or anywhere else for that matter.

If anyone has any pointers, please let me know...