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Old 24th November 2008, 20:41   #1  |  Link
AntiJw
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VMR with DGAVCDec=color-problem

Hey,
I got color-problems when I use VMR or VMR7-renderer with my DGAVCDec-encode, but not when I use Haali-renderer.

Source-image (taken using AvsP, CoreCodec 1.8.5.0):
http://i38.tinypic.com/jhy13o.png

DGAVCDec encode-image (taken using MPC+Haali-renderer and CoreCodec 1.8.5.0 with Auto-levels):
http://i37.tinypic.com/30c3dwz.png

DGAVCDec encode-image (taken using MPC+VMR9 and CoreCodec 1.8.5.0 with Auto-levels):
http://i34.tinypic.com/16glow0.png

The VMR9 (VMR7 also)-renderer encode-image is a bit "washed out", not as red colors as source or the encode using Haali-renderer :P

Does anyone know why VMR9/7 (renderless) doesn't show the correct colors?

I shouldn't have included DGAVCDec in the discussion, because it's VMR vs Haali-renderers.
I tried using Haali-renderer on the source-clip, and then the flag-color (green) of a country looked correct compared to VMR9, that was green:ish, bordering to blue :P
I noticed overlay gives as bad picture as VMR9/VMR7, but I guess it's the quality of the graphicscard that matters then (I'm using an Nvidia GF6600GT).
Thanks

Last edited by AntiJw; 24th November 2008 at 21:05.
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Old 24th November 2008, 21:57   #2  |  Link
Sagekilla
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It could be a color space conversion issue: For arguments sake let's say the image was converted RGB --> YV12 using BT.601. Normally it should have the reverse matrix applied of YV12 --> RGB w/ BT.601. But, the renderer could have screwed it up and done YV12 --> RGB w/ BT.709, giving the wrong colors.
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Old 24th November 2008, 22:35   #3  |  Link
AntiJw
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Quote:
Originally Posted by Sagekilla View Post
It could be a color space conversion issue: For arguments sake let's say the image was converted RGB --> YV12 using BT.601. Normally it should have the reverse matrix applied of YV12 --> RGB w/ BT.601. But, the renderer could have screwed it up and done YV12 --> RGB w/ BT.709, giving the wrong colors.
Thanks, although my AVS is simple (no color-conversion that I know of):
Quote:
LoadPlugin("C:\Program Files\AviSynth 2.5\plugins\dgavcdec106\DGAVCDecode.dll")

AVCSource("C:\VideosHD\sourcevideoHDCap.dga")

spline36resize(1280,720)
DGIndex log wrote "Colorimetry: BT.709* [2]".
I think either my graphicscard suck or VMR9/VMR9/Overlay is bad compared to Haali.

Last edited by AntiJw; 26th November 2008 at 00:57.
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