View Single Post
Old 7th June 2011, 08:13   #16  |  Link
CruNcher
Registered User
 
CruNcher's Avatar
 
Join Date: Apr 2002
Location: Germany
Posts: 4,926
Quote:
Originally Posted by nevcairiel View Post
DXVA decoding (or any kind of hardware decoding) does not benefit from SLI, and i'm unsure if rendering a video does.
The 8600 is a pretty old and slow card (and severly memory limited), running the same on a fast CPU is not comparable.

If you have a recent GPU, and assuming there are no bugs in the decoder and the GPU driver, GPU decoding is equally smooth as CPU decoding, and frees up some resources for other tasks, for example frame interpolation that some people like to do (and every % of CPU is valuable there, I've been told).

Me personally, i use GPU decoding mostly to keep my CPU cool, running CPU decoding in my HTPC makes the poor thing heat up so much, and the fan gets noisy. The GPU doesn't have that problem.
In addition to this, with LAV CUVID i also get awesome deinterlacing with madVR, otherwise i would have to do that in software too (with a probably lower quality)
Yep a very daunting task it took me myself some time to optimize my system to be able to play 1080p flawless in Realtime @ Double Framerate with lowest CPU utilization possible (60% is though still heavy) on a Quadcore and the guys from SVP http://svp-team.com/ did a major step here taking of the load of the CPU (and there is still room for improvement) it's a really recommended thing it blows every ISV solution into Space @ least in quality (Corel,Arcsoft,Cyberlink,Mirilis). Hehe the Russians again, though without manao we wouldn't most probably be their yet so hail to france too

And doing stuff like this http://www.greenparrotpictures.com/slomo.php in realtime or like them www.thefoundry.co.uk where even these days big workstations are used on a consumer system is amazing (with a 4 year old GPU )

The big problem it needs to be a master to use it yet efficiently in a NLE enviroment hehe http://www.youtube.com/watch?v=M9TJuxo6lNI not very convenient for avg joe users

PS: I also let me be carried away into off topic still the main task was to help the thread creator but i have to say im pretty @ the end of possible answer to this/his issue it's so crazy strange this works 1 time then never again until driver reinstall it almost sounds like some kind of restriction that gets forced after a reboot or either the use of the GPU @ all (not the Video Engine) by the driver :P (though unlikely,not impossible but unlikely). Better explanation would be the Video Memory is never fully cleaned up and then 1080p I fails (in the context of only 256 MB) but that's also unlikely as it doesn't work after a reboot @ all again
Wait did you tried to turn off Aero on Win7 you can't unfortunately turn of DWM entirely that only works on Vista if i remember right, but then again it also shows the same issue on XP (where i still can't believe that a driver re install actually makes it possible to use the Video Engine @ all without a reboot) as you said, so nah im to confused with this issue if anyone else has maybe some thesis or knows about this (temporal works) issue i guess many would like to know what's going on on this users Nvidia Windows System .
__________________
all my compares are riddles so please try to decipher them yourselves :)

It is about Time

Join the Revolution NOW before it is to Late !

http://forum.doom9.org/showthread.php?t=168004

Last edited by CruNcher; 7th June 2011 at 09:39.
CruNcher is offline   Reply With Quote