Composite Mesh Issue in Composure

Development Cinematics & Media
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Composite Mesh Issue in Composure

I’m not sure if this is going to end up being very obvious but I work somewhere that has a new studio that does motion capture & VP. I’ve used the Composure plugin and understand the gist of how it works but I’m having an issue that I’ve not seen anyone else run into and have not been able to find any answers through research.

There is always a black bar running down my Composite Mesh (see image attached).

Greenscreen Issue
Greenscreen Issue1118×839 98.5 KB

This doesn’t pose an issue when initially looking through the digital camera, but when using it for VP and doing camera tracking, moving the camera around or panning along the scene ends up showing this bar as if it’s part of the environment. I have tried to make sure to match up my resolution and aspect ratio of the digital camera to the physical camera, tried enabling mipmaps (but as soon as I key the green out, the black area returns), tried playing around with the way the texture wraps around the mesh, and even tried seeing if the issue was the shape of the default composite mesh but this bar exists even if I make my “composite mesh” a random cube or sphere. I tried playing around and figuring out whether it’s a material/texture problem too but couldn’t get to the bottom of it. It also always changes position when I do a new session. Sometimes, it’s on the right, sometimes on the left, sometimes in the middle, all depending on where the composite mesh ends up in the scene.

I am new to the whole VP thing but if anyone has anyyyy ideas, please please let me know. Any suggestions help! :slight_smile:

Additional info: I am using a BlackMagic PYXIS 6K Camera, tracking it using Motive and an OptiTrack setup, plugging it into the PC using a Decklink capture card, and putting it into Unreal Engine using a BlackMagic media source as a Media Profile. Then putting it all through to Composure (tested in both UE5.7 and UE5.8).

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Does it look fine from the camera? Does your media source have black edges, or is this letterboxing? I think you can get a 1 pixel edge sometimes from the camera or capture card. Enabling Wrap or Mirror on the media texture can help get rid of the black.

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No, it only looks fine from the camera view when you don’t move the camera but as soon as you start tracking the movement of the physical camera and using it for actual VP, the black bits appear even from camera view, not just the environment. No- there is no black edges in my media source but I can check if there is any automatic letterboxing taking place. Would this be an Unreal Engine or physical camera setting? I have tried wrap and mirror, and that did not give proper results as no matter what, the moment the keying takes place and the green colour is keyed out, the black bit appears again.