DGVC1DecNV Version 1.0.6

[squid_80]

gpD3D->GetAdapterCount() returns the number of video adapters in the machine.
gpD3D->GetAdapterIdentifier() fills out a D3DADAPTER_IDENTIFIER9 struct for a specific adapter.
cuD3D9GetDevice checks if a given device supports CUDA.
Basically the code iterates through each video adapter in the system until it finds one that supports CUDA. Then uses the given adapter number as the first parameter when calling gpD3D->CreateDevice instead of D3DADAPTER_DEFAULT.

[tomos]

I doubt it will work as a secondary. You'd have to ask Nvidia or try it for a definitive answer.

might end up trying it. could always make it pri if needs be i guess

[Guest]

Then uses the given adapter number as the first parameter when calling gpD3D->CreateDevice instead of D3DADAPTER_DEFAULT.
Are you saying you KNOW that this will allow using an Nvidia card as a secondary adapter with my NV tools? Or are you suggesting it as something to try?

[Guest]

might end up trying it. could always make it pri if needs be i guess If you like, I'll work with you to try to get it working, assuming squid_80's idea works.

[squid_80]

Are you saying you KNOW that this will allow using an Nvidia card as a secondary adapter with my NV tools? Or are you suggesting it as something to try?
I can't confirm that exact code will work as designed, since I can't test the "find first CUDA capable card" loop properly - my last ATI card fried 18 months ago and all my Nvidia cards are CUDA capable, so it always exits with adapter=0. But I have tested passing the adapter no. of a secondary Nvidia card to CreateDevice and it works.

[Guest]

OK, thank you. It seems at least worth trying. I need someone with dual adapters to step up for testing.

[tomos]

If you like, I'll work with you to try to get it working, assuming squid_80's idea works.

thanks :)

will be a few weeks till i get an nvidia card though. sorry. only one i have at the mo is an old 6800gt and i doubt it will work with CUDA

[Guest]

OK, ping me when you are ready to go. This could pull ATI users into the fold.

[tomos]

screw it, i just ordered a gts250. think it's like a 9800 or thereabouts. will hopefully get it tues/wed time. it's going to be on vista x64. will update once it's installed

[Guest]

Send me a PM when you are ready, as I will need to send you a special build. Thank you for your willingness to help.

[~bT~]

i have two cards in sli. i can try maybe?

[Guest]

OK, I'll add the code from squid_80 and make a binary available.

How does that SLI stuff work? Is there still a primary adapter?

[~bT~]

^ errrmm...no idea.. sorry.

[Leak]

How does that SLI stuff work? Is there still a primary adapter?
If it's anything like ATI's Crossfire you'll have two separate adapters and an option somewhere in the driver to link them, at which point the second adapter disappears from a program's point of view.

[squid_80]

It won't be a very good test for the code I posted anyway since even if they exist as 2 separate devices they will both be CUDA capable.

[Guest]

It won't be a very good test for the code I posted anyway since even if they exist as 2 separate devices they will both be CUDA capable. But I can make the code ignore the first one just for testing.

[crasus]

neuron2, just a small question. I have the nvcuvid.dll that came with the latest nVidia drivers & CoreAVC Pro in system32 and your version in the program directory.

Considering that MPC-HC is set up to use the CoreAVC Pro CUDA function, can I run a x264 encode with DGVC1DecNV's avs function while watching a movie in MPC-HC?

[Guest]

I don't recommend it. If you do it, I take no responsibility for what happens.

[crasus]

Thanks for the reply, neuron2! As I'm curious, do you have any ideea to what might happen?

[laserfan]

Lessee, your movie playback fails 90% in, and you have a crowd of people in your HT. At the same time the encoding that's been cranking-away for 16 hours and counting craps-out and you have to start over. Why risk it?

[Guest]

All I can say is that some people do it and get away with it and some get corrupted encodes. I don't know why and don't have time to investigate. Theoretically, I believe it should work as the Nvidia driver is supposed to manage the contexts for the two different processes, but as I said, some people have had problems.

[Audionut]

Hi Don,

I'm getting this error on Windows 7 with all versions of your app.

cuvidMapVideoFrame: 208.


I realize win 7 is still in beta, but i'm willing to help trouble shoot if you want. It's only a matter of time now before Windows 7 is released.

[Guest]

I've already reported it to Nvidia some time ago. The problem is not in my code and we just have to hope that they fix it in time.

I will rattle their cages a little.

EDIT: Just sent this:

"I have a user doing VC1 decoding on Windows 7 beta.

He gets cuvidMapVideoFrame: 208. I believe we briefly discussed
issues with Windows 7 a while back.

Is this issue known and can we hope for a fix before Windows 7
goes final? The user is willing to assist in debugging."

[Audionut]

Cheers.

[squid_80]

Is that with win7 build 7077 or later?

[Guest]

If you have a recent Windows 7 build you will need the latest Nvidia drivers for it. The problem is fixed if you ensure that.

[Audionut]

I'm using build 7068 of windows 7. However the release candidate has just been leaked.

I'm using 181.71 which shows as the latest build for windows 7 on nvidia's site.

I don't want to use the latest build for vista 185.68 as afaik this is WDDM 1.0.
I'd prefer to stick to win 7 drivers which are WDDM 1.1.

I'll install windows 7 RC tonight or tomorrow and try again. If that doesn't work, I'll try the latest drivers for Vista and report back.


edit: WDDM http://en.wikipedia.org/wiki/Windows_Display_Driver_Model

[Audionut]

Using release candidate build 7100 of windows 7 and the drivers from automatic update 181.72 I still get the same error.

[sangwich]

what is this error?

http://hdimage.org/images/sbpyy2rg2fzpqxvp1y72_05022009230302.jpg

for encoding to continue, i must click ok.

I'm getting same error when screen saver engages (switching users will likely to cause this too but I'm not sure, need to test it again) and when two or more DGVC1Decode processes trying to run, so in my case it is not related to any particular position in the fille. I'm using WinXP SP3 + 8600GTS + 178.24 driver. So, is limitation of CUVID server or a bug (or a feature :)) ?

[Guest]

Do not use a screen saver when encoding. Do not try to use the CUVID server with multiple clients at the same time.

[sangwich]

Do not use a screen saver when encoding. Do not try to use the CUVID server with multiple clients at the same time.

It also happens when switching users and when connecting to the machine remotely. I can cope with your "don't" in the first and 2nd case, but 3rd and 4th cases are really crippling. Imagine if you are waited for 6 hours to encode a movie and you are 99% done when you wife (insert GF/roommate/child/etc. here) decides to check her email "for a quick sec" and everything goes to trash :(

So, can I nicely ask for a fix?

[laserfan]

...can I nicely ask for a fix?But, do we know of *any* programs that can survive a log-off/log-on-as-another-user?

[Guest]

There's no fix possible unless Nvidia changes the architecture. You have to play by the rules if you want to use CUVID.

[Leak]

But, do we know of *any* programs that can survive a log-off/log-on-as-another-user?
"Fast user switching" isn't logging off, it's logging on more than one session and switching between them. It's just that only the current session can effectively use the GPU...

Anyway, shouldn't there be a way for DGVC1Decode to simply stall (maybe with a dialog popping up for the user to terminate it) until it can reacquire the hardware, assuming that it's actually possible to do that (most games do it when you tab out of them and back)?

I'd say that would be way better than simply erroring out - if it's doable, of course...

[sangwich]

But, do we know of *any* programs that can survive a log-off/log-on-as-another-user?

In WinXP switching users is not the same as log-off. When I re-encode h264 content, I use non NV version of dgavcdecode and have a queue of work for several days, however I can do all those thing without any impact on the processing.

[squid_80]

Anyway, shouldn't there be a way for DGVC1Decode to simply stall (maybe with a dialog popping up for the user to terminate it) until it can reacquire the hardware, assuming that it's actually possible to do that (most games do it when you tab out of them and back)?
Unfortunately it's more complicated than that, not only would it have to re-acquire a handle to a direct3d device but also reinitialize the CUDA decoder and feed in all the previous reference frames again so the DPB was valid.

[Leak]

Unfortunately it's more complicated than that, not only would it have to re-acquire a handle to a direct3d device but also reinitialize the CUDA decoder and feed in all the previous reference frames again so the DPB was valid.
Hmmm... I don't think that's actually infinite reference frames, so shouldn't it be possible to keep as much of the stream as needed to do that in memory?

np: Lackluster - Whinnye (Proof Of Concept)

[squid_80]

Sure it's possible, just not particularly easy.

[Guest]

Also, there's no API to preload the DPB like that, and to reattach to D3D without resetting stuff.

[Leak]

Also, there's no API to preload the DPB like that
So how do you seek around in the stream then?

[Guest]

If the error code returned is sufficient to distinguish the error from a simple stream error, then theoretically something could be done. But I'd have to keep polling to see when decoding can start succeeding again. It sounds like a nightmare to me.

[xandercage]

i m using nvidia 8800GTX 768 MB GPU.
I instaled this driver 185.85_desktop_winxp_32bit_english_whql and this cudadriver_2.2_winxp_32_185.85_general.
My OS Win XP PRO SP3
But i can t load VC-1 stream. I always get this error
http://megaupload.cz/images/snap33.jpg

What kind of license file is missing?
Any ideas how can i load VC-1 stream or m2ts file?

[Guest]

To get a license, you need to push the yellow button on this page:

http://neuron2.net/dgvc1decnv/dgvc1decnv.html

[xandercage]

I must donate? Or what do u mean?
Thx for the answer

[Guest]

Just read what is written on the page I linked. It's all spelled out for you.

[xandercage]

OK i m waitting for the activation...
Sorry for my dump qustions.
Thanks for your great work

[squid_80]

You might want to save your money, the 8800GTX can't use CUDA for decoding.

[Guest]

He didn't read the page like I asked him to. :(

[Leak]

He didn't read the page like I asked him to. :(
How about making your program error out with an "Unsupported hardware"-type error message before even checking for a license file?

np: Casiotone For The Painfully Alone - Northfield, MN (vs. Children)

[Audionut]

Hi Don,

Just to report your tools work fine in Windows 7 x64 with the latest drivers from nvidia. 185.85

Regards,