[mythtv-users] Best VDPAU card for under $50

[Terjesen Jens Peder]

GZ wrote:

________________________________________

On Mon, May 23, 2011 at 7:48 AM, AGELATOS Athanasios
<Athanasios.Agelatos at intrasoft-intl.com> wrote:
>
> So to slightly resurrect this thread - one concern with the 520 is
> whether or not it has enough processing power to manage vdpau 2x
> advanced deinterlacing for 1080i content.  Although the 520 should
> replace the 220 (which can do advanced 2x on 1080i), it looks like it
> has it has fewer texture/filter units and ROP's than the 220.  Not
> sure what the practical implications are.
>
> Can anyone with the 520 verify that it can do 1080i 2x advanced deinterlacing?
>
> [AA] According to http://en.wikipedia.org/wiki/Nvidia_PureVideo#Table_of_PureVideo_.28HD.29_GPUs a GT520 is VP4 and VDPAU C capable.
> I have a GT 240 which does this without a sweat, you can compare here: http://www.gpureview.com/show_cards.php?card1=650&card2=620
>

Hi Agelatos,
I am aware of the VDPAU feature set for the 520.  However, this only
refers to its capabilities for decoding compressed videos (for
example, xvid, h264, mpeg2, etc).  The deinterlacing in VDPAU is done
by the programmable shaders on the video card, and the amount of
processing power for the video card is directly related to the quality
of deinterlacing.  For example, the nvidia G210 is unable to use the
advanced 2x deinterlacing on HD content, but the GT220 is.  Note that
even though your GT240 is a older than the GT520, it has more
processing power.  The wiki does a decent job explaining this, and
providing a benchmark for the user experience with VDPAU see:
http://www.mythtv.org/wiki/VDPAU

Any GT520 users willing to post their experience, or are the frontends
still being built? :)
-Greg
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Not sure how accurate the VDPAU testing tool is when it comes to real life application.
But according to the results found here: http://www.nvnews.net/vbulletin/showthread.php?t=133465&page=31 it looks like the 520 is more like the 210 than the 220 when it comes to deinterlacing.

NVIDIA GPU GeForce G210 (GT218) at PCI:1:0:0 (GPU-0)
MIXER TEMPORAL_SPATIAL (1920x1080): 67 fields/s
MIXER TEMPORAL_SPATIAL + IVTC (1920x1080): 53 fields/s
MIXER TEMPORAL_SPATIAL + SKIP_CHROMA (1920x1080): 75 fields/s

NVIDIA GPU GeForce GT 220 (GT216) at PCI:1:0:0 (GPU-0)
MIXER TEMPORAL_SPATIAL (1920x1080): 203 fields/s
MIXER TEMPORAL_SPATIAL + IVTC (1920x1080): 169 fields/s
MIXER TEMPORAL_SPATIAL + SKIP_CHROMA (1920x1080): 224 fields/s

NVIDIA GPU GeForce GT 430 (GF108) at PCI:1:0:0 (GPU-0)
MIXER TEMPORAL_SPATIAL (1920x1080): 76 fields/s
MIXER TEMPORAL_SPATIAL + IVTC (1920x1080): 68 fields/s
MIXER TEMPORAL_SPATIAL + SKIP_CHROMA (1920x1080): 85 fields/s

NVIDIA GPU GeForce GT 520 (GF119) at PCI:1:0:0 (GPU-0)
MIXER TEMPORAL_SPATIAL (1920x1080): 67 fields/s
MIXER TEMPORAL_SPATIAL + IVTC (1920x1080): 55 fields/s
MIXER TEMPORAL_SPATIAL + SKIP_CHROMA (1920x1080): 75 fields/s

Jens