Catalyst Crew Feedback Program

khagaroth · Dec 15, 2008, 05:10 PM

OK, as I got no reaction (read, the bug wasn't fixed) for my bug reports on CCF and it seems like someone from ATI comes around here from time to time, can someone please tell the programmers, that using point chroma upsampling

for color conversion to RGB is an atrocity (and I thought it was abandoned around the times of TNT2...), how could they not notice all the pixelation, banding and other artifacts is beyond me. This applies to video playback, and it doesn't happen if the input colorspace is NV12 (activates AVIVO ?), but that is a nonstandard colorspace and isn't supported by most codecs.

ATI:

How it should look like:

Ignore the blurriness, if the video was sharper, the artifacts would be much worse.

sterben · Dec 16, 2008, 06:58 AM

Are you even using a supported player?

khagaroth · Dec 16, 2008, 11:14 AM

???, it's not DXVA, but normal video decoding (in software), so what do you mean by supported player? Any video player outputing to a renderer that requires conversion to RGB, like VMR7 renderless, VMR9, VMR9 renderless, EVR (only tested on XP, don't know about Vistas EVR) has this problem. If I first convert the video to NV12 or RGB32 using software conversion in ffdshow, everything displays correctly.

Dec 15, 2008, 05:10 PM	#31
khagaroth DriverHeaven Newbie Join Date: Dec 2005 Posts: 8 Rep Power: 0	Re: Catalyst Crew Feedback Program OK, as I got no reaction (read, the bug wasn't fixed) for my bug reports on CCF and it seems like someone from ATI comes around here from time to time, can someone please tell the programmers, that using point chroma upsampling for color conversion to RGB is an atrocity (and I thought it was abandoned around the times of TNT2...), how could they not notice all the pixelation, banding and other artifacts is beyond me. This applies to video playback, and it doesn't happen if the input colorspace is NV12 (activates AVIVO ?), but that is a nonstandard colorspace and isn't supported by most codecs. ATI: How it should look like: Ignore the blurriness, if the video was sharper, the artifacts would be much worse.

Dec 16, 2008, 06:58 AM	#32
sterben DriverHeaven Junior Member Join Date: Oct 2008 Posts: 60 Rep Power: 0	Re: Catalyst Crew Feedback Program Are you even using a supported player?

Dec 16, 2008, 11:14 AM	#33
khagaroth DriverHeaven Newbie Join Date: Dec 2005 Posts: 8 Rep Power: 0	Re: Catalyst Crew Feedback Program ???, it's not DXVA, but normal video decoding (in software), so what do you mean by supported player? Any video player outputing to a renderer that requires conversion to RGB, like VMR7 renderless, VMR9, VMR9 renderless, EVR (only tested on XP, don't know about Vistas EVR) has this problem. If I first convert the video to NV12 or RGB32 using software conversion in ffdshow, everything displays correctly.