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View Full Version : WMV9 and Microsoft Mpeg-4 v1,v2,v3

sun_ryan
27th June 2007, 04:33
Does anybody know the relationship betweeen WMV9 and Microsoft Mpeg-4 v1,v2,v3?
Thanks!!
setarip_old
27th June 2007, 04:36
Hi!

There is none.

The MPEG-4 codecs date back to the late 1990s - and were the codecs that were hacked as DivX v.3.11alpha...
foxyshadis
27th June 2007, 08:30
If you're curious about the history, WMV7 and 8 are improvements (quality, features, speed, bugfixes) on the msmpeg4 core, could be thought of as v4 and v5. WMV9 was designed from the ground up, some parts based on h.263+ and then-draft h.264, but quite a bit invented or reinvented in-house.
sun_ryan
27th June 2007, 10:03
Yes, I am interest in the developing history of MS Mpeg-4 and WMV.

Where can I find when these versions were published?
stegre
27th June 2007, 13:35
Wikipedia has a pretty good overall history (http://en.wikipedia.org/wiki/Wmv). For the newer WMV9/VC-1 related stuff, they also have a separate entry (http://en.wikipedia.org/wiki/VC-1), and Zambelli's Doom9 "sticky thread", "VC-1 and Windows Media Video 9 FAQ" (http://forum.doom9.org/showthread.php?t=112634), provides a wealth of practical, accurate and very useful information.