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PureVideo FAQs: Will be updated as necessary.

DAPUNISHER

Super Moderator CPU Forum Mod and Elite Member
Super Moderator
FAQs-

Q: What is the PVP/video processor?

A: It is a 20 million+ transistor dedicated programmable video processing engine present on nv40 and up generation nvidia video cards. It has since been branded as PureVideo.

"Purevideo includes both the Hardware (PVP) and software (Theatertek, NV DVD decoders, and MCE 2005 so far) technologies. PureVideo

Feature support will require both hardware and software support.

Example:*3:2 pull down, MPEG-2 acceleration, and advanced de-interlacing require the NVIDIA DVD Decoder with Windows Media Player or Windows Media Center Edition.

*VMR Scaling requires VMR9 support found in Windows XP Media Center Edition 2005

*Theatertek Link supports more advanced video and audio features.

So even supported software, may or may not include all Purevideo features, and different hardware will support different features as well." ***Information provided by rbV5***


Q: What does it do?

A: The PureVideo engine is promoted as being capable of accelerating both encoding and decoding operations of multiple popular media formats such as MPEG-2 and DIVX. Windows Media Video 9 hardware acceleration is also among the promoted features. Currently WMV high definition content requires a high performance system, but with the PVP offloading this extremely demanding task from the CPU it is possible to enjoy high definition content on far less powerful systems.

Q: Does it work?

A: Yes. and no. Many of the PVP's promoted features depend on application vendor support. As developers add support the video engine's various capabilites will be utilized. However a great deal of controversy has arisen concerning the WMV HD decode capabilities of the 6800 series. The PVP on this series was originally promoted as being fully functional, 8 months later nV revised this to state that the PVP on this series of cards does not accelerate this format as well as the PVP on the 6600 series.

At this time WMV HD acceleration requires PureVideo enabled Forceware drivers and an updated version of Windows Media Player 10 that is not currently available to the public. Even then to what extent the 6800 series will accelerate WMV HD is unconfirmed.


Q: OK, I have seen the threads about the PVP on the 6800 series and I now understand that even when the update to MP10 is available I will still have little to no WMV HD acceleration. Now, what about DVD decoding, does that work?

A: Yes. In order to take advantage of the MPEG-2 hardware decoding capabilities of the PureVideo engine you must install PureVideo enabled Forceware drivers, the 67.01 has been confirmed by Anand to have this support. These drivers have not been officially released, you can experiment with various beta versions available around the web. You will also need to purchase the Nvidia DVD Decoder for $19.99. A 30 day trial period is available for evaluation purposes. Be aware that the decoder is not properly optimized by deafult so visit the link provided below for the information, including screenshot of the settings, necessary to optimize it.

The testing Anand did shows that this features works remarkably well and not only accelerates but improves image quality as well. You can peruse the article here

"Mpeg2 decoding works with any driver in WinDVD if you enable Hardware acceleration in this program's settings." PowerDVD works too ***information provided by McArra and Thugsrook***


Q: Why do I have to pay for the DVD Decoder!?!

A: The following is a quote by Matthias99 in response to this question "You can thank the DVD Consortium for this one. Anybody who distributes a (legal) software or hardware DVD decoder has to pay them a royalty of ~$10 on each one. Even if you write the decoder from scratch.

This is also why ATI charges for the updates to their DVD software (which is part of their MultiMediaCenter package). Legally, they cannot give the new version of the DVD player away, so they either have to charge $10 for it or eat the cost themselves."


Q: what drivers currently support PVP?

A: 67.66 ***Information provided by Thugsrook, and I will update this list as others are verified***


Q: I am one of the 6800 owners who is extremely displeased with how Nvidia has advertised and handled the issues and controversy surrounding the Purevideo engine, what can I do besides complain about it here?

A: ***DISCALIMER: This is just my advice to you and I completely respect your right to pursue a course of action not offered here, or to disagree with the suggestions on principle alone*** 🙂

1.You can contact both Nvidia and the manufacturer of your card and express your displeasure to them.

2. You can boycott Nvidia products, the Manufacturer who sold you the card, or both.

3. You can encourage as many other owners as possible to join in your boycott. Money is the only language corporations speak so stop talking to them if you are that upset 😉

4. You can effort to start a class action law suit, or participate in one should others start it.

5. You can address most of your encoding needs by purchasing a dedicated hardware video encoder.

6. You can address the WMV HD playback issue by building a system capable of handling the task and subsequently not needing to rely on any offloading for smooth playback. Obviously this is a extreme measure for a HTPC, but since Hundreds of WMV HD movies will reportedly be available by years end, if you simply must have flawless playback of this content this is one way to ensure it.

Testing by many forum members has consistantly shown, with a few exceptions, that a 2.3ghz AMD XP or AMD 64bit CPU, non-HT P4 2.4ghz, or P4 HT CPU can provide smooth playback of WMV HD content with no dropped frames. The testing was done with the 1080 version of the Step into Liquid movie trailer as it seems to be among the most demanding WMV HD content currently available. You must also enable fast writes to enjoy smooth playback.

7. You can purchase a 6600 series card for your HTPC, but you will still have to wait for the DLLs/patch to become publicly available, and perhaps official drivers too.




This is a first draft so please bring any and all omissons or errors to my attention so we can update the FAQs accordingly.

 
Needs to be stickified to the roof...


Thanks dapunisher...I guess you rather has us PM you with addtional questions and answers to be added??? As to not start a stir....
 
Nice job DAPUNISHER!

It has since been branded as PureVideo.

Purevideo includes both the Hardware (PVP) and software (Theatertek, NV DVD decoders, and MCE 2005 so far) technologies. Purevideo

Feature support will require both hardware and software support..example:

*3:2 pull down, MPEG-2 acceleration, and advanced de-interlacing require the NVIDIA DVD Decoder with Windows Media Player or Windows Media Center Edition.

*VMR Scaling requires VMR9 support found in Windows XP Media Center Edition 2005

*Theatertek Link supports more advanced video and audio features.

So even supported software, may or may not include all Purevideo features, and different hardware will support different features as well.

8. You can purchase a ATI X series video card and use the following registry edit to help offload the task from the CPU. "RUN regedit -> HKEY_LOCAL_MACHINE -> SYSTEM -> CurrentControlSet -> Control ->Video and find your ATI reg value. The key to update is DXVA_WMV = 1" This however produces rendering errors as I understand it. I do not know the extent of the issue however so you will have to ask someone who has the necessary hardware and has experimented with this.

I don't believe this working quite yet. 🙂
 
Added the PureVideo data provided by rbV5, thanks brudda! :beer:

As to the X series not working yet, Anand seems to have gotten results so that can be the disclaimer on that one 😀

BTW, feel free to post any constructive feedback here Duvie, since it'll serve to bump the thread.
 
Great job!!!!! This is what we all needed. Just one thing to add. Mpeg2 decoding works with any driver in WinDVD if you enable Hardware acceleration in this program's settings. Load with this on is between 4-15% while browsing.

Congratulations!!! 😉
 
Thanks McArra and Thugs for the contributions :beer: Thanks to all others for the props and bumps :beer: We have a good sart here me thinks.
 
any idea why 6800s are neutered? I do notice some choppiness at beginning and end of movies..

I hope they release a driver to fix this --;
 
Originally posted by: MustangSVT
any idea why 6800s are neutered? I do notice some choppiness at beginning and end of movies..

I hope they release a driver to fix this --;
Do you have the DVD Decoder installed and configured as Anand shows in the screenshot?

 
Originally posted by: DAPUNISHER
Originally posted by: MustangSVT
any idea why 6800s are neutered? I do notice some choppiness at beginning and end of movies..

I hope they release a driver to fix this --;
Do you have the DVD Decoder installed and configured as Anand shows in the screenshot?

Cant seem to find a link..?
 
Originally posted by: MustangSVT
Originally posted by: DAPUNISHER
Originally posted by: MustangSVT
any idea why 6800s are neutered? I do notice some choppiness at beginning and end of movies..

I hope they release a driver to fix this --;
Do you have the DVD Decoder installed and configured as Anand shows in the screenshot?

Cant seem to find a link..?
My bad,

30 day free trial

optimal settings
 
Evil Punisher! You would not let this die! I curse you!*


LOL 😉

Anyway, on topic:
8. You can purchase a ATI X series video card and use the following registry edit to help offload the task from the CPU. "RUN regedit -> HKEY_LOCAL_MACHINE -> SYSTEM -> CurrentControlSet -> Control ->Video and find your ATI reg value. The key to update is DXVA_WMV = 1" This however produces rendering errors as I understand it. I do not know the extent of the issue however so you will have to ask someone who has the necessary hardware and has experimented with this.

I have the necessary hardware, a X800 XT PE. I downloaded/installed the latest drivers from ATIs website tonight, played SIL, very high cpu usage. 70s-80s.

So I found two "DXVA_WMV = 0" keys in the registry, changed them both to "1", played SIL, no change.

So I rebooted, verified the reg changes were still there, played SIL, no change.

With my 6800GT I got 70s-80s also, so I don't think this will "help" anyone with WMV, but the X800 XT PE is also a fine gaming card, and has VIVO to boot.



*for those who expect nVidia defense from me 😉
 
Hey DAPUNISHER i thought you weren't going to do this 😉 ... at any rate, EXCELLENT JOB!

I was going to do this as soon as i felt comfortable with my 7 Midterm exams. Oh well takes some stress off of me. Again nice job!

Vote for Sticky and bump.

-Kevin
 
some info ~ not sure how useful it is, but here it is nontheless....


WMP vs PowerDVD (PDVD is HW enabled)
MOV = 30% vs X
WMV = 38% vs 38%
WMV SIL = 80% vs 80%
AVI = 30% vs 20%
MPG = 20% vs 3%

🙂
 
Thanks Rollo :beer: I removed it since no one seems to be able to duplicate Anand's results. Also added PowerDVD ^



 
bump....why not stickied yet???

Dapunisher...anything on xbitlabs earlier reports of a bios flash on 6800NU's??? I have never seen anyone verify this yet, but haven't looked that hard of late...
 
Nice. This is what should have been done from the beginning.

I would also like to add that PureVideo causes an incompatibility with my ATI TV card. My reasoning for saying this is rather complex, but here goes:

Originally I had installed the 67.66 beta drivers on my NV41 card (full PureVideo supported). I plug in the ATI TV Wonder USB 2.0 adapter into my USB slot. I proceed with driver and software installation (drivers and Multimedia Center), and reboot. I start up MMC TV, and notice very odd video banding across the video discoloring contents under which it covers. The banding was such pure (non-static) color I can conclude it's not a problem with my TV tuner or cable static, but rather a problem with the MMV TV software or the hardware overlay. The reason I think it's hardware overlay is because when I adjust the tint/hue/brightness settings the whole video changes (including the discolored video bands). The ForceWare control panel refuses to disable it when I tell it to, so I think it's a bug. This option is only in 67.66, so I can basically conclude it has something to do with PureVideo. EDIT: Turns out I just had Coolbits 2 enabled on the other driver set. In 67.66 while the TV is running, I unclick the check box, and the software goes crazy. The list box of options is cleared and acts really buggy until I cancel out the dialog. When TV is disabled I can go in and uncheck it fine, but when I start TV back up, I look back in the control panel and it's "automagically" enabled again.

I start up Windows Movie Maker, and ask it to capture video from my tuner. The problem disappears. However, that doesn't mean that Multimedia Center is the problem. I believe it uses Video for Windows for capturing video, rather than DirectShow like Windows Movie Maker. This is just a theory though; I'll reinstall 67.66 and try another Video for Windows capture app. Since I installed the 66.93 release drivers (which do not have PureVideo enabled), I've had no problems. Hopefully this is just a 'beta bug'. However, the TV is still a little shaky. I get about a centimeter of noise at the bottom of the TV.

Edit: Update: Same thing still happens, but with the other VfW capture app, I don't have the banding problem.


Also, maybe you should add something like this to the FAQ.

Q: Is nVidia PureVideo supported on my card?
A: http://www.nvidia.com/page/purevideo_support.html
Note at the top where the GT and Ultra say "SD/HD display processing including Gamma Correction and Color Space Conversion". Don't be fooled. The cards that also say "SD/HD display processing" support these features also, as far as I know. nVidia makes the table entry look bigger thinking people will get it instead. They put "Gamma Correction and Color Space Conversion" in there likely because the PCIe-bridged NV45 (6800GT and Ultra) lack WMV acceleration, to take up the space of "hardware accelerated decode". At first glance, you can be easily misled.
 
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