garageCube

Here's a suggestion for a future release: Being able to render a scene into a single video file to free up the CPU. This would be useful for scenes that have multiple layers of video, generators and effects. This would be the same as rendering a timeline in a video editing app, like Final Cut Pro.

+1 neeeed

Record or Render the Display etc.

yes and it is also a good option for all the minimad user

For me this would also be an awsome feature.

I often have the case in exhibitions where we want to project a video on a curved wall,
or we have some area sticking out in the proection surface.
All I want to do is do some minor mapping and correction and render it to a file (without loosing quality and with sound).

Adobe is available, but no option because it randomly needs internet connection and every tutorial I found looks like a workaround.

Is there maybe another software for exactly this case?

depending on your output resolution, gfx card specs and hardrive,
you might use Syphon Recorder (mac) or Spout Recorder (windows).
Just select your projector in the projector tab, and enable syphon/spout output.

Recommended computer:
Win 10
Nvidia 2080
SSD nvme M2 (such as samsung evo plus 970)

another option would be to use a second computer with a capture card.