Originally posted by: Atif
It appears as though nVidia is sending its board partners a memo about the Video Processor to clarify what's going on with it (I suppose this vocal show of disgust has done something already). Below you'll find some bits of information that I got from a conversation with a kind BFG Technician.
First, I asked him outright
does the video processor on the NV40 work? To this he responded that yes, the processor does work, however, the memo from nVidia says end-users must download an updated ForceWare driver (to be made available at the end of November) and, when applicable, a Windows Media Player update from Microsoft, to make use of the processor's functions.
Just to be sure we're talking about the same product during our conversation I then clarified with him that this new driver would enable the Video Processor on the 6800-series
AGP cards, to which his reply was '6800 AGP, or PCI-Express and 6600 AGP or PCI-Express, the bus doesn't matter, the feature is in the GPU.'
I'm not too sure that he was keen on my asking this question because of the rumor that earlier NV4x silicon (as found on AGP 6800s) has a defective Video Processor, but nonetheless, he told me before we started talking that he'd be drawing his information from this nVidia memo, nothing else.
I decided to ask about MPEG-2 decoding first, because it isn't as 'sticky' a situation as that of WMV9 HD seems to be.
"Is nVidia DVD Decoder required to make use of the Video Processor for MPEG-2 content, or can any DVD playback software make use of the Processor?" His response: No, "for MPEG-2 decode only, any application built on DirectShow can take advantage of the hardware decode on the 6800 and 6600 as long as they access the hardware through DirectX Video Acceleration. WinDVD, for example, can take advantage of nVidia's hardware decode." (he read that off the memo to me)
Since this memo mentions nothing about the NV40 Video Processor being defective/broken, I asked him if this memo specified WMV9 HD decoding as a feature of the NV40 VP. Here was what he found on the memo relating to each series:
6800: "support for high-definition MPEG-2 video decode and standard definition MPEG-2 decode"
6600: "hardware acceleration for high-definition Windows Media decode"
Now, I asked him if there was any particular reason why the memo didn't particularly specify WMV9 HD hardware decoding as a feature of the 6800 series, but did so for the 6600 series. He suggested that perhaps nVidia forgot to list the 6800 with this feature specifically, since it wouldn't make sense that the high-end part wouldn't have this feature.
Next, I asked him "what additional software (if any) would be needed to use the hardware decoding features of the Video Processor for WMV9 HD content?" He read me exactly what was stated on the memo to answer this question: "for Windows Media Video decode on the 6600 models, end-users will need to download an update to Windows Media Player from Microsoft."
I was seeing an eerie pattern here: any time WMV9 HD came up, the memo seemed to redirect discussion to the 6600. I wanted to clarify that what he had told me earlier still applied, so I asked him the following again:
Atif: "I'm sorry, I've gone over this several times now, but I just want to be sure: once this driver comes out, it will allow for that hardware decoding of WMV9 high-definition content on the 6800 series as well?"
BFG Technician: "Yes"
Atif: "And that's regardless of if i have an AGP version or PCI-Express version?"
BFG Technician: "Yeah, cause it's just... it's a part of the GPU, the bus doesn't matter"
Atif: "Is there any particular reason why nVidia didn't enable the video processor from the start, or to begin with?"
BFG Technician: "No, I wouldn't know the answer to that, I have no idea why."
My own reflection on the conversation: it seems as though WMV9 HD hardware decoding is introduced with the 6600 series cards, not the 6800 series. HOWEVER, the vagaries of the memo gave the tech the impression that the 6800 will support any/all the features available on lower model GPUs once this ForceWare driver is made available at the end of next month. I cannot provide my own opinion as of yet simply because he was unable to fax me a copy of this memo or go on record and read the entire memo to me.
Nonetheless, I will be speaking with someone from nVidia directly tomorrow morning (was scheduled for today but had to reschedule). Below you will find the questions I will be asking nVidia. If you feel that something else needs to be asked, please
e-mail it to me and I'll try my best to ask your question as well.
1.) Does the Video Processor on the NV40 (GeForce 6800 AGP) support hardware decoding of WMV9 HD content?
2.) If the answer to 1.) is yes, when will a driver be made available for Windows XP that enables this support?
3.) If the answer to 1.) is no, which GeForce products support WMV9 HD decoding in hardware? Is there a particular reason why the Video Processor on the NV40 does not support WMV9 HD content?
4.) What additional software (if any) would be needed to use the hardware decoding features of the Video Processor for WMV9 HD content?
5.) Is MPEG-4 and MPEG-2 (DVD) content decoded in hardware by the Video Processor on the NV40?
6.) Is additional software (if any) needed to use the hardware decoding features of the NV40 Video Processor for MPEG-4 content?
7.) Is nVidia DVD Decoder required to make use of the Video Processor for MPEG-2 content, or can any DVD playback software make use of the Processor?
Peace