2nd Monitor Only Displays 540 Scanlines

[Accountclosed]

I have done two tests which provide compelling evidence that the information you have is wholely inaccurate:

1. Dropped primary screen resolution to 1920×1080. Driving both screens at this lower resolution, Premiere still doubles lines on the preview monitor.

2. Ran nView setup to route 2 independant media player instances to 2 monitors, each running full-screen, #1 at 2560×1600 and #2 at 1920×1080 (max supported by mon #2). Two DIFFERENT videos played to two different monitors at full screen and FULL resolution, no jaggies, no dropped frames.

This, in my estimation, is CLEAR evidence that the 8800GTS CAN output two independant streams and full resolution to both outputs. So I conclude that the problem is a Premiere issue and not a hardware limitation with the 8800GTS.

BTW, 1920×1080=2,073,600 pixels and 2560×1600=4,096,000 pixels, approximately DOUBLE that of HDTV 1080P.

Take care,

Mark & Mary Ann Weiss

https://www.basspig.com The Bass Pig’s Lair – 15,000 Watts of Driving Stereo!
https://www.mwcomms.com
https://www.adventuresinanimemusic.com

[Tim Kolb]

[Basspig] “This, in my estimation, is CLEAR evidence that the 8800GTS CAN output two independant streams and full resolution to both outputs. So I conclude that the problem is a Premiere issue and not a hardware limitation with the 8800GTS.

BTW, 1920×1080=2,073,600 pixels and 2560×1600=4,096,000 pixels, approximately DOUBLE that of HDTV 1080P.”

Keep in mind that Premiere Pro does try to use some of the GPU power on the display card, so the fact the card can run two media player full outputs doesn’t necessarily mean anything as PPro probably uses more resources from the card…how much I don’t know as I use Quadro cards like Gene does.

I do know there are reasons why the QuadroFX 4500 card, which isn’t even a current model anymore, with 512MB of RAM retailed for something slightly less than $3,000.00 USD three years ago when it was new (they still bring $1500-2000) and your GeForce 8800 GTS with 640 MB of RAM runs for around 500.00 new.

There are a lot of differences once you really examine them and RAM is significant, but not the only factor…clipping planes (how many windows it can hold im memory at one time without swapping, even when they aren’t “on top”), etc…all has to do with balancing the performance of the card and since GeForce cards are designed for games and entertainment primarily, the design priorities are simply different.

I’m not slamming the card, but I guess we’ll need a GeForce card user with some expertise to chime in, because it doesn’t really sound like you’re doing anything incorrectly.

TimK,
Director,
Kolb Productions,

Creative Cow Host,
Author/Trainer
http://www.focalpress.com
http://www.classondemand.net

[Gene Colburn — email address bounces notices]

Tim – well said and you covered the first base early on in this thread. How is Mark setting up (Premiere settings) I was assuming this to be correct from the dialog.

Mark

1920 refers to horizontal dots per scanline. Roughly wo thirds of 2560. Not half. Just pumping bits out of ram is incidental to how a card performs, as there so many other operations going on as Tim explained.

I went back and re-read this entire thread, and the third part of the equation is the Viz which overall looks to be a pretty fair LCD monitor for its price.

But lets just say for kicks the 8800 is fine here.
Would you try something as a test. If the 8800 supports 1366 x 768 try it and see if the half resolution issue goes away. If it goes black don’t leave the setting as damage could result to the Viz although its specs support it.

I have ran into the need for custom timings for large multi image projectors in the past to make them display correctly, and XP supports it. It is entirely possible you may need to do this as well, but hopefully not. Below is a link that will give you a feel for what I’m referring to.

https://www.avsforum.com/avs-vb/showthread.php?t=206854

Regards

[Gene Colburn — email address bounces notices]

Mark
As a side note, I am at work, and have just set up a test this am with a cheap ATI HD 2600 manufactured by ProColor. A $150 consumer video card. This is on a dual xeon work station. If I undock the monitor panel and size it for full screen in a dell 2405 secondary monitor, there are no jaggies, and I am displaying all 1080 lines correctly. It looks a little soft, but thats it.

I think your problem might be the dvi to hdmi conversion, and the viz. The specs for the viz dvi input are 1366 by 768, which I suspect may be the true resolution of the monitor.

Somewhere in there lies the culprit.

[Accountclosed]

I too, have this same situation–if I move a “window” onto the Vizio monitor, it displays at full resolution of 1920×1080 (the native resolution of this “FullHD” monitor). If I instead use the Premiere feature to send output to “1080P 60” monitor, I get a 1080P sync rate on the monitor, but every scanline repeated twice, effectively reducing it.

Now there is something interesting in the nVidia Control Panel under “Change flat panel scaling”:

Native resolution: 1280×720
Current resolution: 1920×1080

The native resolution may be reported incorrectly by the monitor, if the nVidia driver is not at fault. It could be a firmware issue. I think this may be a holdover from the VGA port on the Vizio, which IS limited to 1366×768, according to the manual. However, the HDMI port uses the full resolution. So I use the HDMI port through an adapter cable. And it works fine for everything but Premiere. I’m guessing that the Vizio just reports the “native resolution” to the PC based on the VGA port, since they didn’t expect the HDMI to be connected to PC. But lots of folks were doing that successfully for HTPCs and I decided to buy based on that, as well as other factors.

The monitor itself is a 2.2 megapixel display. That’s why we bought it, because at the time, that many pixels cost $4K on a display that size. Everything else out there was 1366×768 and looked like a window screen was in front of those other displays.

Interestingly, I get full resolution when I drag any desktop client video window to the Vizio monitor, but it is only Premiere that can’t seem to do it. Despite Premiere seeing the 2nd monitor as “1080P 60”.

Go figure….

Take care,

Mark & Mary Ann Weiss

https://www.basspig.com The Bass Pig’s Lair – 15,000 Watts of Driving Stereo!
https://www.mwcomms.com
https://www.adventuresinanimemusic.com