"stutter" using VMR9

[Braklet]

Sub

Any idea about problem above? I assume no since no replies after 38 views but hard for me to beleive no one has some suggestions.

Well, you're opening up the Pandora's Box of the HTPC world. Everybody who tries HD ends up taxing their video reproduction system to the max and tuning is NOT a deterministic proposition. What works for me may not work for you, and I've even seen cases where slight signal changes affect final video quality.

Anyway, I've seen your symptoms on my setup (nVidia 6600 GPU). As part of my HD tuning regimen, I ended up abandoning VMR altogether. I use Overlay instead. You lose some capabilities vs. VMR (smooth transparent OSD, automatic aspect ratio) but the GPU is taxed much less and the resulting video quality was significantly better in my case. Switching to Overlay, I also had to deal with the "nVidia aspect bug" but I can't remember exactly what I did to get rid of that.

SD is flawless on my system, HD is 98% great. The only content that still causes noticeable framedrops for me is SD program carried over HD channels. I've watched framedrops simply stop during live TV when the program changed to native HD. I've no explanation for that, and guess it has something to do with SD imprecision in an HD bitstream causing a lot of extra work for the GPU.

The nVidia GPU and PureVideo decoder are quirky and not well behaved, but in my experience _once you get them tuned_ the resulting video is hard to beat. Your mileage may vary.

[acegolfer]

I just upgraded my system to Dell XPS 410 with E6400 and 7900GS. After spending 2 days trying to get perfect 1080i and 720p playback, I found a sweet spot.

I'm using
1. Latest Purevideo Decoder for video
2. AC3filter for audio
3. VMR9 (not tried VMR9 custom yet)
4. Use "smart" de-interlace control
5. If you use DirectX 9.0c quartz.dll, then occasionally I get stutter. I just have to ff/rw to get smooth video. (I believe there's a fix for this but haven't tried it yet.)

[fiteclub]

Thanks everyone for the info; I will try turning of DxHA tonight when I get home, but it seems like the last time I tried that, I got no picture at all. Just audio.

VMR7 seems to be working ok for me right now but may change when I tax the system with true 1080i and 1080p media. BTW, what am I losing when using VMR7 instead of VMR9?

Thanks again for all the feedback!

[Ranman]

Dropped the hardware Acc last night and got a bad audio sinc problem. I checked and I have the DirectX 9c. Tonight I'll replace the quartz.dll with the older one and see if that helps. Just thought I was entitled to a better picture with my set up. Guess I'm too used to the dish PVR and digital.