Medium picture quality with ATI550

[Jarobata]

I had similar experience initially but found that poor quality deinterlacing was the main issue which blurred the picture and made it appear fuzzy. Most mpeg2 decoders only have "bob" deinterlacing which is very poor. There are now advanced deinterlacers that use adaptive motion/vector deinterlacing. The best bet is to use your video card deinterlace functionality (adaptive deinterlacing is now available via the latest drivers for both ATI and Nvidia video cards, although nvidia requires the purevideo decoder to make this work). In order to use the video card deinterlace function, simply disable the decoder interlacing by setting the decoder to "weave" (pass-though with no deinterlacing). If your video card does not support deinterlacing then try to obtain a mpeg2 decoder with the new adaptive deinterlacing function. Note that if you are using mpeg2 decoders within GBPVR then it is highly likely that you will need to configure the decoders via registry settings for GBPVR use.

I have an ATI 9550 video card with catalyst 6.1 drivers and use the Intervideo decoder with the registry setting for Weave deinterlacing and the picture is amazingly sharp compared to the old "bob" deinterlacing.

Another trick I found was to reduce the ATI550 noise reduction setting to "light" which again sharpened the picture. The default setting of dynamic appeared to misinterpret fine detail movements as noise and smooth them out (eg tree leaves rustling). I use a utility called ChrisTweak to adjust the 550 settings. I also noticed that the 550 sharpness setting changes to a value of 128 when used by GBPVR, but the default is 200, so again I have used ChrisTweak to default this setting which when defaulted seems to stick ok. I have found the sharpness setting doesn't make much difference.

Edit:
Also just remembered that the Mpeg2 encoder is very poor and you need a very high bitrate to get a sharp picture. I have configured GBPVR for VBR 8-12Mb/s to get a high quality capture then transcoding to MPEG4 which keeps the quality but significantly reduces the file size.

Could someone help me out with these suggestions? I have an nvidia 7600gt with nvidia purevideo decoder and I want to enable my video card's deinterlace functionality. I can't seem to figure out any way to set it up.

[csy]

That was one of my early posts and I didn't get it 100% correct with the de-interlacing statement. The best de-interlacing method is hardware de-interlacing on the video card, which performs spatial/temporal de-interlacing (otherwise known as vector adaptive), but this is not enabled via setting "weave" of the decoder. The correct way of enabling it on the Purevideo decoder is detailed in the following link:
http://forums.nextpvr.com/showthread.php...t=registry

[creep]

When using the "force weave" setting, what should my deinterlacing setting in Misc be?

None or encoder_pass_though?

[csy]

encoder pass-through

("none" means you do not use a decoder in LiveTV Preview mode)