Using MPO inside OBS

Reminder: MPO has a popout feature which opens a new window for settings (bottom left inside settings). Useful for switching games/characters etc while recording.

Add Window Capture

Run the website in any browser and add window capture in OBS and select your browser that runs MPO (in some browsers incl. Chrome you need to disable hardware acceleration, else it gives a blackscreen) and disable your cursor so it doesn't get recorded.

Create Greenscreen effect

Go to the MPO settings and enable greenscreen.
Rightclick on window capture in OBS and select filters, then add "Color Key" (NOT "Chroma Key"!). You can try out your own settings or use these which should work:

• Key Color Type: "Blue"
• Similarity on 156
• Smoothness on 249

You can change the background color in the MPO settings, these numbers were for the default color (#0000FF).

Another useful thing is the "Enable Drag 'n' Drop" feature in the settings, it allows you to move all counters so it can perfectly fit in your layout.