Welcome to Doom9's Forum, THE in-place to be for everyone interested in DVD conversion.

Before you start posting please read the forum rules. By posting to this forum you agree to abide by the rules.

 

Go Back   Doom9's Forum > Video Encoding > New and alternative video codecs

Reply
 
Thread Tools Search this Thread Display Modes
Old 13th April 2012, 11:34   #1  |  Link
Snappy Phoenix
System Tweaker
 
Snappy Phoenix's Avatar
 
Join Date: Apr 2012
Location: Dubai, U.A.E.
Posts: 83
DXVA vs CUVID?

I have a GeForce GT555M with 2 GB DDR5 VRAM

I have always used CUVID in LAV as my settings but am wondering which is better?

I still think that the nVIDIA CUVID should render a better result for an nVIDIA GPU right?

Please correct me if Im wrong and I'd highly appreciate if you can tell me the differences between DXVA vs CUVID
Snappy Phoenix is offline   Reply With Quote
Old 13th April 2012, 11:56   #2  |  Link
nevcairiel
Registered Developer
 
Join Date: Mar 2010
Location: Hamburg/Germany
Posts: 9,860
CUVID has the advantage that the hardware communication was directly developed by NVIDIA and therefor should (hopefully) get the values always just right.
A generic DXVA implementation may have some small issues, occasionally. In most cases, its fine, though.

DXVA might have slightly less power usage in some cases.

If CUVID works just fine for you, i would just stick with it.
On a laptop, i would try to compare power draw between the two modes, if your laptop offers precise information about current power usage.
__________________
LAV Filters - open source ffmpeg based media splitter and decoders
nevcairiel is offline   Reply With Quote
Old 13th April 2012, 12:46   #3  |  Link
Snappy Phoenix
System Tweaker
 
Snappy Phoenix's Avatar
 
Join Date: Apr 2012
Location: Dubai, U.A.E.
Posts: 83
Quote:
Originally Posted by nevcairiel View Post
CUVID has the advantage that the hardware communication was directly developed by NVIDIA and therefor should (hopefully) get the values always just right.
A generic DXVA implementation may have some small issues, occasionally. In most cases, its fine, though.

DXVA might have slightly less power usage in some cases.

If CUVID works just fine for you, i would just stick with it.
On a laptop, i would try to compare power draw between the two modes, if your laptop offers precise information about current power usage.
Ah I see, I guess I should just stick to LAV then

and I am not really concerned about the power because I'm always connected on AC Power

Cheers
Snappy Phoenix is offline   Reply With Quote
Old 13th April 2012, 13:22   #4  |  Link
CruNcher
Registered User
 
CruNcher's Avatar
 
Join Date: Apr 2002
Location: Germany
Posts: 4,949
@berryracer
There is a pretty easy rule if it works for you and you don't care about any resource usage then use what you prefer from other viewpoints then those pretty easy.
There are pros and cons of both and those are usage case specific as well there is no General way to say 1 is best the other is worse there both have their pros and cons from different viewpoints.
Though their is rarely Software who can make use of both efficiently based on these pros and cons they rather use only 1 or the other but they dont clever combine both
__________________
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
CruNcher is offline   Reply With Quote
Old 13th April 2012, 14:36   #5  |  Link
aufkrawall
Registered User
 
Join Date: Dec 2011
Posts: 1,717
With CUVID my GPU stays in P0 state and starts to make noise.
Also, something of NVAPI is broken, GPU applications aren't correctly reported to the MDPS of Nvidia Inspector (fixed with Kepler but still broken with Fermi).
Annoying.
aufkrawall is offline   Reply With Quote
Old 13th April 2012, 19:30   #6  |  Link
dukey
Registered User
 
Join Date: Dec 2005
Posts: 560
Speed wise there probably isn't much in it. CUVID is of course nvidia only.
dukey is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +1. The time now is 03:38.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.