The only thing I thought, but I do not consider it the right decision   if (abs(worldCoords.y) < 1.241) { finalColor = float3(0.0); }

The problem was in the tracking configuration let personSegmentation: ARWorldTrackingConfiguration.FrameSemantics = .personSegmentationWithDepth         if ARWorldTrackingConfiguration.supportsFrameSemantics(personSegmentation) {   configuration.frameSemantics.insert(personSegmentation)         } There were people on the video and setting up the tracking configuration made them occlusion.

Hi friend! I hope I correctly understood your question. I don't know the possibility of doing it through a RealityComposer ,but I have a solution to how to do it through Xcode, like this. 1 Add your video file to Bundle 2 Add video player, and import AVKit  private var videoPlayer: AVPlayer! 3 Something like that func obtainEntity() {         guard let path = Bundle.main.path(forResource: "Texture", ofType: "mp4") else { return }         let url = URL(fileURLWithPath: path)         let playerItem = AVPlayerItem(url: url)         videoPlayer =  AVPlayer(playerItem: playerItem)         let mesh = MeshResource.generateSphere(radius: 0.03)         let material = VideoMaterial(avPlayer: videoPlayer)         entity = ModelEntity(mesh: mesh, materials: [material])         entity.generateCollisionShapes(recursive: true)         entity.setParent(anchorEntity)         videoPlayer.play()         arView.installGestures(.all, for: entity)         arView.scene.anchors.append(anchorEntity)         NotificationCenter.default.addObserver(self, selector: #selector(loopVideo), name: NSNotification.Name.AVPlayerItemDidPlayToEndTime, object: playerItem)     }          @objc     func loopVideo(notification: Notification) {         guard let playerItem = notification.object as? AVPlayerItem else { return }         playerItem.seek(to: CMTime.zero, completionHandler: nil)         videoPlayer.play()     }