Content of Power pointer in Pc with NVidia surround in capture card Black magic

[Velkien]

Hello Galera, in some jobs, the companies I work with often make multiple projections with blend. The last project had a screen with 24mx4m and a resolution of 6480 * 1080. The system was using a capture card with a maximum capture resolution of 3840 * 2160 * 30fps. To capture at 60fps, I had to leave with 1920 * 1080 * 60 resolution. The PPT that was entering the capture was in the right proportion but the output was stretching until reaching the 6480 * 1080 resolution. So at home I wanted to do some tests using two capture cards in the case 2 Black Magic intensive 4k pro. The content engine has a GTX 770, I've sent an output to the monitor that will manage the content and two more outputs that are entering the capture cards to use NVidia surround technology and send 3860 * 1080 * 60 and lose the least possible definition. But unfortunately when I try to turn on the surround it only sends resolution of 8192 * 2160 * 24, and when I apply the screen turns black and no image arrives on the capture cards. Here are some videos showing the steps I followed.
https://youtu.be/dFNJ2PBh0PM
https://youtu.be/VN-8hFgUNF4
I've seen watchout users do the same to send their content at the highest resolution possible. Has anyone tried this experience yet? Maybe the GTX 770 is a bit dated for this process? AMD with eyefinity would be more recommended? Thank you.

[Oaktown]

I find your post a bit confusing so I'm not 100% sure I'm understanding what you're doing but here are a few notes that may help you understand why it's not working:

Even though they're labeled 4K, BMD Capture cards don't do 4K (4096x2160) but they do Ultra HD (3840x2160) which is commonly and wrongly referred to as "4K":

Here the supported standards:

SD Video Standards

• 525i59.94 NTSC, 625i50 PAL

HD Video Standards

• 720p50, 720p59.94, 720p60
  1080p23.98, 1080p24, 1080p25, 1080p29.97, 1080p30, 1080p50, 1080p59.94, 1080p60
  1080i50, 1080i59.94, 1080i60

Ultra HD Video Standards

• 2160p23.98, 2160p24, 2160p25, 2160p29.97, 2160p30

Also here is alink to GTX770 Specs (see the underlined section)

Maximum Digital Resolution (1): 4096x2160

(1) - 3840x2160 at 30Hz or 4096x2160 at 24Hz supported over HDMI. 4096x2160 (including 3840x2160) at 60Hz supported over Displayport. Support for 4k tiled MST displays requires 326.19 driver or later.

[Velkien]

Sorry man, my bad English, I do not speak the language and I had to use Translator. Below I did a quick project to see if you can understand my need. With the Watchout and datapath capture card I've seen it working.

The first image corresponds to a test I did with monitors and the next two is what I'm trying to do using the capture boards and Resolume instead of the friend tvs.

https://uploaddeimagens.com.br/imagens/ ... 5cff1e8325
https://uploaddeimagens.com.br/imagens/surround_2-png
https://uploaddeimagens.com.br/imagens/surround_3-png

Sorry if it is not yet clear

[Oaktown]

I’m still not sure why you’re sending (2) 1920x1080/60 from one computer to the next and outputting 6480x1080 on (4) projectors. GTX GPU only have 4 outputs so what’s the Nvidia GPU on your Resolume computer that you’re getting 5?

Also what’s the Nvidia surround for?

Have you considered using Newtek NDI to get the signal across from one computer to the next?

[drazkers]

Surround will take multiple screens and group them as a single one for Resolume to see. It actually is a sneaky way to really increase performance. It seems weird, but it does actually make a noticeable difference.

But its also super buggy and can cause alot of issues as if one monitor drops you basically loose the whole damn thing.

Surround is super finicky so i assume what he is running into is a resolution and frame rate that surround doesn't like.

Suggestion for OP: Stop using surround for your 2x1920x1080 machine. Only use surround for your mapping machine. A 770 should handle 2 outputs fine. You're getting too obsessed with this little trick that some watchout guys like to use.

EDIT for OAKTOWN: Surround wasn't a feature unless you had an SLI bridge between two GTX cards. He has two cards with a SLI bridge but isn't using the SLI feature. Altho i now read that you can do it via a single card. Back when i ran into this, it required the sli connector.

[Oaktown]

EDIT for OAKTOWN: Surround wasn't a feature unless you had an SLI bridge between two GTX cards. He has two cards with a SLI bridge but isn't using the SLI feature. Altho i now read that you can do it via a single card. Back when i ran into this, it required the sli connector.

Thanks Drazkers. I know what it is but I just don't understand why he's using it in this particular instance (or any instance for that matter!).