Support for WMV/VC-1 : XP Vs. Vista ?

I've an Nvidia display adapter (8600GT) on a dual boot box,
XP pro and Vista.

On Vista, a file with the following specs plays OK
(35% CPU on a dual core), but in my XP system
(WMP 11) the CPU usage is 50% and the
playback stutters.

Does DVXA not work in XP? Appreciate any suggestion.

In both cases I enabled DVXA acceleration in the performance/advanced
tab of the WMPoptions.

Format : Windows Media
File size : 2.87 GiB
Duration : 33mn 47s
Overall bit rate : 12.2 Mbps
Maximum Overall bit rate : 12.1 Mbps
Encoded date : UTC 2010-03-31 18:31:23.000

Video
ID : 2
Format : VC-1
Codec ID : WVC1
Codec ID/Hint : Microsoft
Duration : 33mn 45s
Bit rate : 1 bps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 29.970 fps
Resolution : 16 bits
Bits/(Pixel*Frame) : 0.000
Stream size : 253 Bytes (0%)

Audio
ID : 1
Format : WMA
Format version : Version 2
Codec ID : 161
Codec ID/Info : Windows Media Audio
Duration : 33mn 47s
Bit rate : 128 Kbps
Channel(s) : 2 channels
Sampling rate : 44.1 KHz
Resolution : 16 bits
Stream size : 30.9 MiB (1%)

DVXA 1.0 supports XP.

regards,
S.Sengupta[MS-MVP]


"Dave and Rosanna" <> wrote in message
news:...
> I've an Nvidia display adapter (8600GT) on a dual boot box,
> XP pro and Vista.
>
> On Vista, a file with the following specs plays OK
> (35% CPU on a dual core), but in my XP system
> (WMP 11) the CPU usage is 50% and the
> playback stutters.
>
> Does DVXA not work in XP? Appreciate any suggestion.
>
> In both cases I enabled DVXA acceleration in the performance/advanced
> tab of the WMPoptions.
>
> Format : Windows Media
> File size : 2.87 GiB
> Duration : 33mn 47s
> Overall bit rate : 12.2 Mbps
> Maximum Overall bit rate : 12.1 Mbps
> Encoded date : UTC 2010-03-31 18:31:23.000
>
> Video
> ID : 2
> Format : VC-1
> Codec ID : WVC1
> Codec ID/Hint : Microsoft
> Duration : 33mn 45s
> Bit rate : 1 bps
> Width : 1 920 pixels
> Height : 1 080 pixels
> Display aspect ratio : 16:9
> Frame rate : 29.970 fps
> Resolution : 16 bits
> Bits/(Pixel*Frame) : 0.000
> Stream size : 253 Bytes (0%)
>
> Audio
> ID : 1
> Format : WMA
> Format version : Version 2
> Codec ID : 161
> Codec ID/Info : Windows Media Audio
> Duration : 33mn 47s
> Bit rate : 128 Kbps
> Channel(s) : 2 channels
> Sampling rate : 44.1 KHz
> Resolution : 16 bits
> Stream size : 30.9 MiB (1%)
>
>