It looks like Millenium II cards can do at least partial Xv support (YUV-to-RGB conversion and horizontal scaling). See the URL for an old patch against XFree86 4.2.0. Assigning to myself, I've got the beginnings of a forward-port.
*** Bug 866 has been marked as a duplicate of this bug. ***
unassign this from me, i'm not actively working on it and i don't have the hardware.
Sorry about the phenomenal bug spam, guys. Adding xorg-team@ to the QA contact so bugs don't get lost in future.
*** This bug has been marked as a duplicate of bug 11537 ***
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