CurtPalme.com Home Theater Forum

MYoung · Joined: 24 Feb 2007 Posts: 369 Location: Madison, WI

I'm considering getting a Vision DVI for the Runco IDP-980 I recently got. I was thinking of feeding the Vision DVI 1080i or 720p @ 60Hz from my PS3 and HD-A2 and having the Vision DVI output 720p @ 48Hz when watching movies and 60Hz for video games and TV. I see from from Vision DVI/HDP manual that the Vision DVI cannot do film pull-down frame-reconstruction for HD sources -- only SD sources (it states that the HDP can do film pull-down frame-reconstruction for HD sources). So does that mean when I feed the Vision DVI a 1080i Blu-ray it won't be able to reconstruct progressive film frames and output 720p @ 48Hz? That might be a question for Lumagen, but figured I'd try here first to see if I can get a faster reply. Thanks!

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

I think it will do it fine, also read this interesting little piece,

https://www.curtpalme.com/forum_archived/viewtopic.php@t=10190.html

Athanasios

MYoung · Joined: 24 Feb 2007 Posts: 369 Location: Madison, WI

Thanks for the tip! Interesting thread indeed!

MYoung · Joined: 24 Feb 2007 Posts: 369 Location: Madison, WI

Well, I got a VisionDVI for the setup and tried it out. I'm not impressed with the results, but I think I know why. I'm running component video from a HD-A2 and PS3 into a passive Radio Shack A/V switch, then a 50 foot component video cable to the VisionDVI, then RGBHV cable from the VisionDVI to the projector. The picture looks very soft, lacks punch, and the colors are pretty bad. Of course, I shouldn't be surprised considering that there's an extra D/A and A/D conversion in the mix! Though on my other setup, I run component video from a HD-A1 into a VisionHDP, then 35' RGBHV cable to a 1292Q and the picture is excellent, aside from some noise which may or may not be the 1292Q. The 50' compnent video cable can't be helping the cause, though when I ran component video directly into the D50, feeding it 1080i, it looked better. Of course, that setup also lacked the extra D/A and A/D conversion!

I ordered a HDfury with the hope that having that in the mix and reducing the extra D/A and A/D conversion, the image will look like eye candy again, like it does when I hook up a PC to the Runco 980 and play 720p trailers.

One thing I did notice with the VisionDVI, it doesn't appear to be correctly reconstructing progressive frames from 24fps film-based 1080i video. The manual says it cannot do that, but that the VisionHDP can, and that certainly appears to be the case. I popped in Goodfellas on HD DVD and whenever there's bright white text on the screen I can see the text shaking vertically, as if related to interlacing. I don't get that at all on my VisionHDP -- just a nice, progressive image. Perhaps if I fed the VisionDVI 1080/24p it would be able to scale that to 720p@48Hz as well as the HDP can scale 1080i at 60Hz to 720p @ 48Hz? That I'll have to try with the PS3 as the HD-A2 cannot output 1080/24p.

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

I think the 50 feet of cable doesnt help much at all for one thing, did you read how the DVI can accept 1080p@24? I'd try that trick out and see if that does it.
I agree the HD-A2 and its 1080i isnt a good HD solution with the DVI, you could try to change the Film mode and interlacing options in the DVI, not sure what to do but play around i guess.

Athanasios