HDR (Single PC)

[dioxis]

My current stream setup is (1 PC):
- Hardware (NVIDIA NVENC H.264)
- Input res: 2560x1440
- Output res: 1920x1080
depending on the game, I capture the game itself or the monitor. As we know OBS does not support HDR capture.

I was thinking about buying an Elgato 4K60 PRO or AVerMedia GC553 Live Gamer Ultra 4K (both support 1440 res and HDR). Connect without passing through and use image cloning (still 1PC), monitor 100/144Hz and capture card 60Hz.
Then the source in OBS would be the capture card, would NVENC encoding still make sense? I read that in the case of image cloning, the performance loss would be negligible or 1-2FPS.

I could play 1440p HDR and still stream with OBS on 1PC.
Anyone tried such a solution?

 

[deFrisselle]

Attachment is broken
I read of it So, not a new idea

 

[dioxis]

I have no idea where this attachment came from o.O

 

[dioxis]

mmmh did you realy need HDR ? i mean when you use a Capturecard you can forget GSync thats clear ?

Why? Gsync works independently of the outputs (now i have 2 monitors, no sync iiyama and predator with gsync). Works fine.
I want use "Connect without passing through and use image cloning"

 

[dioxis]

Master of Paint ;)

 

[FerretBomb]

My current stream setup is (1 PC):
- Hardware (NVIDIA NVENC H.264)
- Input res: 2560x1440
- Output res: 1920x1080
depending on the game, I capture the game itself or the monitor. As we know OBS does not support HDR capture.

I was thinking about buying an Elgato 4K60 PRO or AVerMedia GC553 Live Gamer Ultra 4K (both support 1440 res and HDR). Connect without passing through and use image cloning (still 1PC), monitor 100/144Hz and capture card 60Hz.
Then the source in OBS would be the capture card, would NVENC encoding still make sense? I read that in the case of image cloning, the performance loss would be negligible or 1-2FPS.

I could play 1440p HDR and still stream with OBS on 1PC.
Anyone tried such a solution?

The capture card can support HDR, but OBS still can't. So if you have HDR on, your image colors will be corrupted.
No capture card supports GSync, so you will get image tearing with it enabled... most GPUs are unable to clone a primary display at a lower refresh rate correctly. Even if they do, you will get motion judder due to uneven framerate pulldown (going 120hz to 60 just discards every other frame, 144 to 60 results in an erratic scatter). Likewise with trying to clone an HDR display to a non-HDR secondary output, at best you're going to end up with messed up colors.

There is almost zero reason to have a capture card on a 1PC setup. Really, only for consoles (technically not a 1PC setup any more), for fullscreen-only games that bug out with game capture, or if you're on a laptop and need display capture at the same time as game/window capture.
Using a capture card on a 1PC setup is like driving across town and back, just to visit your neighbor. It will NOT solve the problem you're looking to fix, and will actually increase your overhead.