does WMV9 codec have "zone" option?

[HOLiC]

Like x264, I'm wondering if it's possible to set different quantizer (in this case, quality level) at different frames using WMV9. I can't find this option in virtualdubmod (perhaps, WMV encoder?) The reason I ask is because I have a video file which was encoded at QL92 / 0-2000 frame, and at QL97 / 2001-3000 frame, and rest of frames at QL92 again.

[Sharktooth]

AFAIK no.

[Vitaly Ivanov]

WMV9/VC-1 allows to set different quants for every frame or even macroblock, however afaik you can't make it with MS enc

[Sharktooth]

Not to scare you... but every mpeg codec can use different quant for every frame or even macroblock...

[zambelli]

Like x264, I'm wondering if it's possible to set different quantizer (in this case, quality level) at different frames using WMV9. I can't find this option in virtualdubmod (perhaps, WMV encoder?) The reason for asking is because I have a video file which was encoded at QL92 / 0-2000 frame, and at QL97 / 2001-3000 frame, and rest of frames at QL92 again.
Yeah, this is really a question of encoder implementation. WME doesn't support it because it was released way before VC-1 even existed. A "professional" encoder release is in the works, but I'm not sure if that's on its feature list. I would imagine so, since that's the kind of thing most studios need.

In the meantime, there's nothing stopping a 3rd party from implementing VC-1 encoding and supporting that feature, but obviously nothing has been made public or freely available yet.

So to answer your question... No, right now there's no option.

A workaround would be to slice the source into fragments via Avisynth, encode each piece, and then merge them together with a tool like AsfBin.

[HOLiC]

ahhh, I see... thank you very much!!