If you can successfully run the Virtual Desktop software on Pico 4, you can control and see your PC desktop through the Pico 4.
Simply run the iStripper app using Pico 4 controllers - select iStripper app with point and controller single trigger and double-trigger to execute .
The Virtual Desktop environment can be customized to your liking.
For iStripper, I like to use the void black background and then use the controls that become visible when pointing above the screen to max the screen size, curve the window (instead of flat), and move the screen to a comfortable position.
For VR180 videos, use Virtual Desktop's built-in video player (Videos tab) - this gives you the native resolution of videos regardless of your display resolution. Virtual Desktop uses the same Videos folder as the PC, but this can be changed in the Virtual Desktop Streamer app.