Show some placeholder until video loads in immersive view Vision OS

I am playing immersive video as shown in picture but it displays black screen until videos get loaded

and here is when video gets loaded

here is code snippet

struct ImmersiveMeditationPlayerView: View {
    @Environment(\.dismissImmersiveSpace) private var dismissImmersiveSpace
    @Environment(\.openWindow) private var openWindow
    let player = AVPlayer()
    
    
    init() {
        Logger.shared.log(message: "IMERSIVE VIEW INSIDE")
    }
    
    var body: some View {
        VStack {
            RealityView { content, attachments in
                            //Create Entity for the video
                            let videoEntity = Entity()
                            let url = URL(string: "https://videoc2CIarRqKp")!
                            let asset = AVURLAsset(url: url)
                            let playerItem = AVPlayerItem(asset: asset)
                           
                             //create a videoMaterial
                            let material = VideoMaterial(avPlayer: player)
                            
                            //Made a Sphere with the videoEntity and asign the videoMaterial to it
                            videoEntity.components.set(ModelComponent(mesh: .generateSphere(radius: 1E3), materials: [material]))
                            
                            //adjust the properties of the videoEntity(Sphere) if needed
                            videoEntity.scale = .init(x: 1, y: 1, z: -1)
                            videoEntity.transform.translation += SIMD3<Float>(0.0, 10.0, 0.0)
                            
                            let angle = Angle.degrees(90)
                            let rotation = simd_quatf(angle: Float(angle.radians), axis: .init(x: 0, y: 0, z: 0))
                            
                            videoEntity.transform.rotation = rotation
                            
                            //add VideoEntity to realityView
                            content.add(videoEntity)
                            
                            //start the VideoPlayer
                            player.replaceCurrentItem(with: playerItem)
                            player.play()
            }
        attachments: {
            Attachment(id: "myMeditationBuilderView") {
               
            }
        }
        }