I sure HOPE I didn’t mention a WMV10.
So, VC-1 is the SMPTE designation for our new codec, which is a slightly modified version of WMV9-Advanced Profile. In fact, when you get the Studio Edition encoder, it’ll call its VC-1 implementation “Windows Media Video 9 Advanced Profile).
That said, it has a different 4CC (WVC1, instead of the old WMV9-AP’s WMVA), which means players will need to be updated to support it.
More confusingly, but more good news for users, is that VC-1 Main Profile is the same as WMV9. So the implementation enhancements we’ve been doing for HD DVD will also lead to a big improvement in traditional WMV9 encoding (Main Profile isn’t in the beta, but will be in Studio Edition later this year).