Multiple external display?

Videosync
2

Hey Ivan,

You’ve already mentioned both methods that are currently possible, so I’ll elaborate on those:

  1. Using only Videosync:

    • Displays have separate Spaces should be disabled:

      • On macOS Ventura, go to System Preferences > Desktop & Dock > scroll to to the bottom, it’s in the Mission Control section.
      • On older versions of macOS, go to System Preferences > Mission Control > it should be the fourth option from the top.

    • After disabling, log out, and log back in again.

    • In System Preferences > Displays > the displays should be arranged next to each other. If the displays are stacked vertically, it will only work if the top display contains the menu bar, as it’s not possible to drag a window over the menu bar.

    • Drag the edge of the Videosync window across all three desktops.

    • In Videosync’s Control window, switch off the Border.

    • Then use the Transform device on each output track, and then use an x-offset to get the right content on the right monitor.

  2. Using Syphon outputs

    • Using separate Syphon outputs and Return tracks, you can use another application to receive the textures, which you then set to fullscreen on other monitors. The most lightweight app you can use for this is Syphon Client app, part of the Syphon Simple Apps package. You can launch this app multiple times, and then select a different Syphon input on each instance.

    • Hide it’s Toolbar from the View menu in the menu bar, and then set the app to fullscreen on your external displays.

Let me know if this helps.