Custom Blender Camera Shape?

Question

Is it possible to have a custom Blender camera shape?

Like when rendering, the camera image outputs as a "triangle" shape? Or a polygon shape?

Is there a trick to making a custom picture shape without actually rendering a rectangle or a square?

The reason I am wondering is because this tutorial shows how to do it in OBS studio. So it might be possible to do in Blender.

If you know an answer, please share. I would really like to know.

Do you mean the shape in the viewport? Or some kind of clipping mask on top of the final image? — brockmann, Feb 08 '20 at 17:05
related: https://blender.stackexchange.com/questions/107326/how-to-create-a-circular-camera-safe-frame?rq=1 — brockmann, Feb 08 '20 at 17:11
I think the holdout shader is what you want: How to mask animated objects so they aren't visible past a certain area? — brockmann, Feb 08 '20 at 17:12
Hello :). Your video output will always be rectangular. The linked tutorial is using a circular clipping mask over the rendered rectangular video, which you can do using compositor. — jachym michal, Feb 08 '20 at 17:21
Ok. Can you tell me how to do that? I'm not experienced with the compositor, and I would like to learn. — Nate_Sycro27, Feb 08 '20 at 17:22

score 1 · Accepted Answer · answered Feb 08 '20 at 18:21

1

Your rendered video will always be rectangular.
But you can add a mask over it, using the compositor

How to connect a mask in compositor.
The RGB node changes the background color.

answered Feb 08 '20 at 18:21

jachym michal

2

Or you can use a holdout shader as mentioned in my comment, which also saves render time. – brockmann Feb 08 '20 at 18:34

1 Answers1