PureVideo/Scaling/FFDShow

[235301]

I am generally satisfied with the performance of my system(including HD despite my low end specifications). My last real complaint is analog TV, specifically the quality of the picture on my LCD TV. I am currently using the PureVideo decoder(it's the only one that provides smooth HD playback on my system). For standard analog NTSC TV PureVideo appears to be upscaling the video a bit(maybe +10%) which I believe is resulting in the degradation in quality of analog TV. I turned on the FFDShow postprocessing and it indeed improves the quality of the analog TV picture. I do notice that with FFDShow turned on that the analog TV picture is smaller(thus has less scaling than Purevideo) which I believe in part leads to the better picture quality with FFDShow. However, FFDShow when turned on with Purevideo this leads to a lockup of PVRX2 when tuning HD channels(it's OK on analog channels).

So my question is can you set some level of scaling with Purevideo in perhaps an effort to scale the analog TV video appropriately? Or are there smoothing functions for Purevideo that can lead to better picture quality? I noticed when running cable directly to the LCD that it stretches the image to be full screen and then applies extreme smoothing-this makes the picture look decent but more muddied compared to what I see in PVRX2.

Or is there a way to turn on FFDShow so that it can coexist with Purevideo and not cause lockups when tuning HD channels?

Hopefully this post makes sense.

[Deusxmachina]

Or is there a way to turn on FFDShow so that it can coexist with Purevideo and not cause lockups when tuning HD channels?

I keep forgetting to look up what the FFDshow post-processing checkbox actually does in GBPVR; if it has filter presets or what.

But, FFDshow can be set to run with any kind of audio or video. That's beyond the scope of this post since my brain is tired, but the easiest way is to make it the audio decoder. That way you get the FFDshow icon in the Windows tray and can enable video post-processing and whatever filters you want through that. Enabling FFDshow post-processing filters can use a lot of CPU, though. I only run two or three, and that's on a hefty Core2Duo.

Rather baffling why it locks up only on HD, unless the system just can't handle playing it with with the extra post-processing. Narrowing down the problem if you haven't already is to see if it locks up on any digital channel or if it does it only on HD channels. I get one SD channel, (24-hour local weather), and that was the only digital channel that had video sometimes when I was messing with mpeg2 accelleration settings on my video card.