Exporting Video based Avatars from Blender omitting webcam property

[lachlanphillips]

I can't seem to find out how to export a webcam based avatar from blender. I've tried importing and exporting both the provided astronaut GLB and the BLEND file, and while both exports show the avatar in hubs, neither allow avatar webcam sharing.

Is there a specific method of exporting the GLB that's required for it to include the relevant webcam properties? Thanks