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NDI Alpha layer

Posted: Sat Nov 09, 2019 20:57
by sefreso

Does anybody know if it's possible to export the alpha layer instead of a black background when exporting the video using NDI Network Streaming?

My first tests using the command line NDI recorder (NDI 4 Tools\Studio Monitor\Application.NDIRecording.x64.exe) show that the produced file has a black background and did not retain the alpha layer.

Same issue when recording using the Resolume record feature. The alpha layer is not kept.

I tried to look for a parameter in layer & composition but could not find what I was looking for.

Thanks for any help.

Re: NDI Alpha layer

Posted: Mon Nov 11, 2019 16:46
by Zoltán
Resolume records to photoJpeg currently an this indeed doesn't keep the alpha.

NDI output from Resolume however has alpha, if you send content with alpha.
I'd guess, either your output has a black background, or the NDI recorder doesn't support alpha.

If you preview the NDI source in Resolume by double clicking on the server in the sources panel, does it show transparent?

Check the slices, that you don't have this checked:
Képernyőfotó 2019-11-11 - 16.43.32.png

Re: NDI Alpha layer

Posted: Mon Nov 11, 2019 19:52
by sefreso
Thanks for your help.

Previewing the NDI source is a good helper!

It shows alpha, which means it's the recorder or I'm doing something wrong with it.