Based on your questions here it seems you’ve jumped right into using Aximmetry without reading the documentation. Aximmetry and Unreal are both very complex programs and you won’t be able to figure everything out in your own. On the other hand, it’s quite easy to get started if you just follow the instructions in the documentation carefully. The reason you’re seeing the red frame is that you don’t have a video inout configured and possibly that you haven’t set up your UE5 scene correctly for tracked cameras. Like I said, it all explained in the documentation….