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c/linux_gaming · by Die4Ever@retrolemmy.com · 224d

I want to record 4k game footage but I only have access to a 1440p monitor

I want to make a 4k game video for Youtube but I only have access to a 1440p monitor. On Windows I could use DSR, how do I do this in Linux? Kubuntu, KDE Plasma 6.4.5, RTX 2080, Nvidia driver version 580.95.05

26 points · 15 comments · view on lemmy.world

15 Comments

Emperor@reddthat.com · 29 pts · 224d (11 replies)

You can use gamescope to set a higher or lower resolution and it'll down or up scale it to your screen.

I presume you can use obs or something like that to record the raw footage before scaling.

Die4Ever@retrolemmy.com · 6 pts · 224d (9 replies)

ok I installed gamescope, and set my launch options (for Deus Ex)

gamescope -w 3840 -h 2160 -W 2560 -H 1440 -b -- %command%

It seems like it sorta works, Kentie's Launcher is big (like when I tried this in Bazzite's Gaming Mode), and the 3840x2160 resolution is an available option, but when I try to launch the game and Kentie's Launcher closes to launch the game, gamescope just dies and the game never starts

EDIT: I have a workaround by just skipping the config dialog

gamescope -w 3840 -h 2160 -W 2560 -H 1440 -b -- %command% -skipdialog

But OBS is only capturing at 2560x1440, so this idea doesn't work

Emperor@reddthat.com · 3 pts · 223d (2 replies)

did you try this?

https://github.com/nowrep/obs-vkcapture

you need to capture the game not the gamescope instance.

Die4Ever@retrolemmy.com · 1 pts · 223d (1 reply)

I did try this but I couldn't get it working with Flatpak OBS and native Steam. I even built it from source and added obs-gamecapture to the Steam game's launch command

Emperor@reddthat.com · 3 pts · 223d

It works just fine for me. What are the steps that you did?

I use nix so:

  1. I installed OBS with all the plugins especially obs-vscapture
  2. Run OBS and add Game Capture Source
  3. Using lutris I enabled gamescope and changed the game resolution to something higher. I have a 1440p display so I tried 2560x1600 (16:10) to make sure I'm capturing it right.
  4. Inside Lutris System Options game options tab I added OBS_VKCAPTURE and set it to 1.
  5. When I run the game I can see gamescope is working as it's projecting a 16:10 game onto my 16:9 screen.
  6. Inside OBS I can see the game capture is working and when I select the Game Capture source it shows that it's a bit too tall for my display.

Should be a similar thing for you, I would try something obvious like 16:10 first so you can get immediate visual feedback and then tweak your settings from there.

JaddedFauceet@lemmy.world · 3 pts · 224d (4 replies)

Use 3840 for both -w and -W?

gamescope -w 3840 -h 2160 -W 3840 -H 2160 -b -- %command% -skipdialog

Instruction:

[gamescope] [Info]  console: gamescope version 3.16.19 (gcc 15.2.1)
usage: gamescope [options...] -- [command...]                                                                                                                                     
Options:
  --help                         show help message
  -W, --output-width             output width
  -H, --output-height            output height
  -w, --nested-width             game width
  -h, --nested-height            game height
Die4Ever@retrolemmy.com · 2 pts · 224d (3 replies)

that works but then it doesn't fit on my screen so I can't see what I'm doing in the game lol

JaddedFauceet@lemmy.world · 4 pts · 224d (2 replies)

You can still play through OBS's viewport lol

in OBS you can scale the viewport to fit your screen.

Die4Ever@retrolemmy.com · 3 pts · 223d

That's true! I'll probably do that lol, thanks

Die4Ever@retrolemmy.com · 1 pts · 223d

This ALMOST works lol. The problem is the center of the game is off-screen, and the game tries to keep the mouse centered in its center, so my camera just spins like crazy lol

Maybe I can fix this with some abuse of my multi monitor layout

highball@lemmy.world · 2 pts · 224d

Nice bro.

msokiovt@lemmy.today · 3 pts · 224d

Can confirm that my producer and I use a 1440p resolution, but downscale to 1080p, or even 936p (if you're on platforms that limit bandwidth).

GreenMinusBlue@lemmy.zip · 1 pts · 223d (2 replies)

Ive seen resolution tinkering with the Nvidia driver on Windows. Its doubtful that the proprietary driver would allow it, on Linux.

Die4Ever@retrolemmy.com · 1 pts · 223d (1 reply)

What if I switch to the Nouveau drivers? Deus Ex would probably still run well enough, so if they can do custom resolutions that could help

GreenMinusBlue@lemmy.zip · 1 pts · 223d

If you do that its more likely, although im not exactly sure how to implement the tinkering. Sorry