The script also makes Windows+Alt+0 hide the title bar from a window, but this is sometimes unstable and I don't recommend it. Once your setup is ready, you can shut the script down if you want from the taskbar. This script is very hacky overall so sometimes stuff goes wrong!

This works with lots of different windows (not Warudo) so you can experiment with other apps too! The background clip colour is defined in the script as black (000000) but you can replace that with another kind of "greenscreen" colour.

Rendering a transparent window is very hard on your graphics card: I have a 4k monitor but set the resolution to 1920x1080 to save performance. You can see how much resources it's using by looking at the "Desktop Window Manager" process in Task Manager.

Run the Studio Monitor app from the NDI Tools launcher. Set the source to Warudo, and set it to full-screen in the top right. Make sure the window is in focus (click on it) then press Windows+Alt+Number (1-9) to toggle the transparency overlay on and off.

Download the AutoHotkey script. Double click the .ahk file and make sure it runs as AutoHotkey 2, it will run in the background. It's activated by default with Windows+Alt+Number (1-9).

Configure Warudo to output to NDI. Make sure the Camera asset has "Transparent Background" set to Yes. The background should look black in Warudo. It's best to set the output resolution to fixed. I use 1920x1080, same as my OBS output.

Required software: (all free!)
Warudo warudo.app
NDI Tools ndi.video/tools/
AutoHotkey 2 www.autohotkey.com
My special script gist.github.com/Ooseykins/d3...