This is a fantastic plugin, and I'd like to use it for my church's sermon recordings.
Let me explain how we record now. I have a 4k webcam, capturing a wide shot, attached to the same computer we run OBS from for recording and a presentation software for projecting songs lyrics and bible verses during the sermon. I have a single scene set up in OBS with a canvas size of 3840 x 2160. This canvas is split into quadrants with one quadrant the wide camera shot (so now 1920x1080). The second quadrant is a duplicate of the webcam but zoomed in 2x using the crop and resize handles in the preview window. The third quadrant is a display capture of the projector attached to the computer as a second monitor that the presentation software projects to. The fourth quadrant is a browser source showing a local html file that has the sermon title, date, and name of the speaker, in black text on a white background. This UHD MKV recording is then imported into DaVinci Resolve and edited using the different quadrants as if they where separate video recordings. This works extremely well because I can create a template in Resolve that composites this all together so I only have to edit between the wide and close shot using Resolve's multicam feature. With the mutlicam feature I usually switch to the wide shot whenever the speaker moves out of the frame of the close shot. It would be more flexible to be able to follow the speaker in the close shot using your plugin and only have to cut to the wide shot for effect, not necessity.
The problem I've run into with your plugin is trying to apply it to only one of the webcam quadrants. As you know, if you apply an effect to a source that's duplicated in a scene, the filter gets applied to both instances in the preview window. Usually you can get around this by putting one the the instances in a group and applying the filter to the group. I tried this with your plugin but it does not work.
Can you add the ability to use your plugin on a group? If this could be added, I could almost be able to do everything in OBS without even needing to edit in Resolve. Thanks