Hi,

There is no access to the Out output pin.
Note, that even if you don't add the Aximmetry Camera in Unreal, you will have the Out output pin in your Unreal scene. As the Out pin is not done by the Aximmetry Camera blueprints.

If you want to mix that rendered Out video with something else in Unreal, I suggest doing that in Aximmetry. You can use a new Set Aximmetry Video to send images/videos from Unreal to Aximmetry and then mix it in with an Out output pin.
If that is not workable, can you describe what you want to achieve? Maybe there is another way to do it or we can put this into our request lists if it is really not achievable in other ways.

Warmest regards,

Thank you for your reply.

I want to see B1, B2 and B3 at the same time.

Hi,

You can turn on/off the visibility of Billboards on the control boards:

Warmest regards,

I'm very sorry, I didn't explain it clearly. I hope to find the video after billboard synthesized the scene.

I think it's here. But I tried, but it didn't work.

Hi,

I don't know what is exposed from the billboard to the return node in your screenshot, probably it is the billboard's texture. It is probably very far from what you want to achieve.

There is no Set Aximmetry Video with the final image in the Aximmetry blueprints because it is done on engine level. There is no access to that part.

Nevertheless, there are ways to modify the final rendered image, like Post Process Materials: https://docs.unrealengine.com/4.27/en-US/RenderingAndGraphics/PostProcessEffects/PostProcessMaterials 

If you could describe what you want to make, then probably we can find a solution more quickly.

Warmest regards,

I want to preview multiple input synthesis to the scene at the same time.

so I can preview and switch multiple cameras in one computer.

Is there any way to realize it?

Hi,

You can preview all the inputs at once in Aximmetry using the Matrix option on the Cameras control board:

In this setting, you will see the final output and keyed inputs. Since Unreal for Aximmetry can render one Unreal camera per computer, there is no way to show every camera's final image at once without a multi-machine setup.
Note, that this is not true for scenes rendered by Aximmetry, Aximmetry can render multiple cameras at once.

So if you want to see just the billboards, you can easily do that in Aximmetry.
But if you want to see more than 1 camera position in Unreal, that won't be possible, even if you edit the Unreal camera.
And if you want to see different billboard inputs for the same camera and billboard position at once, that can be achieved with some editing in Aximmetry (only if not using the Allow Virtuals option).

I hope this answers what you want to realize.

Warmest regards,