I would like to know this too. I think it is in  PhotogrammetrySession.Request.modelFile(url:detail:geometry:)  and in Geometry, we can pass a bounding box and transform. I just haven't figured out how to do that properly. Apple, please help!! thanks, Dale

I think you mean animation playback instead of video playback. It is 3D animation and you get video style controls. I "WISH" we could have video playback in AR quicklook. I could make good use of that.

were you ever able to get it to build? I am having the same problem

@yojimbomaster, did you have any luck finding a way to access the occlusion material in Reality Composer? I want to be able to use quicklook to see objects that include occlusion - like a portal. Thanks, Dale

I Have the new iPad Pro, and the latest XCode - there appears to be no beta at the moment. But when I down https://developer.apple.com/documentation/arkit/world_tracking/visualizing_and_interacting_with_a_reconstructed_sceneI get tons of errors, like it isn't supported. And when I try to manually make the scene reconstruction work in a new project I also get errors. Are we waiting on a beta to be released before we can develop with this?Has anyone been able to get the demo project to work?thanks,Dale