Alpha Key/Track Matte from live source.

[Reggie Lloyd-Jones]

Anyone interested in/able to develop the ability for OBS to use a live greyscale source as an alpha key/track-matte?

I'm using OBS with ProPresenter 7 by Renewed Vision, which has the ability to output a separate alpha channel. These greyscale frames can be used to tell which parts of the image should be transparent/opaque in keyers like the ATEM Switchers by Blackmagic. It would be really nice to be able to be able to utilize this in OBS.

OBS can currently do this using a still image source for the alpha key, but it would be nice if you could pick a live source as the track-matte source.

Just wanted to get the conversation started. Thanks guys!

 

[lebaston100]

Have you tried the dynamic mask filter from the StreamFX Plugin?

Non-Free - StreamFX (for OBS® Studio)

We no longer maintain the resource on the OBS Project forum. Please visit the official Website or Discord for updates.

obsproject.com

Filter Dynamic Mask

StreamFX is a plugin for OBS® Studio which adds many new effects, filters, sources, transitions and encoders! Be it 3D Transform, Blur, complex Masking, or even custom shaders, you'll find it a...

github.com

 

[Reggie Lloyd-Jones]

Hey Lebaston, no I wasn't aware of this plugin. It looks like it might do the trick. I'll experiment with it and post my results here. Thanks so much for the tip!
- Reggie