GMA 4500MHD: no support for VC-1 Variable Length Decode

AMeie — Fri, 26 Feb 2010 08:53:10 GMT

I have a notebook using the GMA 4500MHD chipset graphics. I'm running Windows7 x64.

My current driver version is 8.15.10.2021.

According to the specs this chipset should have full support for accelerating MPEG-2, AVC and VC-1 coded movies.

Full support means:

MPEG-2: VLD + iDCT + MC

VC-1: VLD + iMDCT + MC + LF

AVC: VLD + iMDCT + MC + LF

This is true for MPEG-2 and AVC. But for VC-1 there seems to be no support for VLD.

Exactly the same SW-setup on another computer with an ATI graphics card supports

VLD for VC-1. Hence it can not be a problem of the media-player or the codec.

Question: is this a known problem of the driver or the chipset ?

addendum: restested on Acer Aspire 3810T. This notebook has a buildin GMA 4500MHD and an additional, switchable ATI Radeon 4330.

GMA 4500MHD: AVC ok, VC-1 no support for VLD

ATI: AVC ok, VC-1 ok

So either the specs for the GMA 4500MHD as listed in wikipedia are wrong or the driver is faulty.

topic GMA 4500MHD: no support for VC-1 Variable Length Decode in Graphics