I'm trying to use AVPlayer to capture frames from a livestream that is remotely playing. Eventually I want to convert these frames to UIImages to be displayed. The code I have right now is not working because pixel_buffer doesn't have an actual value for some reason. When I print itemTime its value is continuously 0, which I think might be a potential cause of this issue. Would appreciate any help with getting this to work. import RealityKit import RealityKitContent import AVFoundation import AVKit class ViewController: UIViewController { let player = AVPlayer(url: URL(string: {webrtc stream link})!) let videoOutput = AVPlayerItemVideoOutput(pixelBufferAttributes: [String(kCVPixelBufferPixelFormatTypeKey): NSNumber(value: kCVPixelFormatType_32BGRA)]) override func viewDidLoad() { print("doing viewDidLoad") super.viewDidLoad() player.currentItem!.add(videoOutput) player.play() let displayLink = CADisplayLink(target: self, selector: #selector(displayLinkDidRefresh(link:))) displayLink.add(to: RunLoop.main, forMode: RunLoop.Mode.common) } @objc func displayLinkDidRefresh(link: CADisplayLink) { let itemTime = videoOutput.itemTime(forHostTime: CACurrentMediaTime()) if videoOutput.hasNewPixelBuffer(forItemTime: itemTime) { if let pixelBuffer = videoOutput.copyPixelBuffer(forItemTime: itemTime, itemTimeForDisplay: nil) { print("pixelBuffer \(pixelBuffer)") // yay, pixel buffer let image = CIImage(cvImageBuffer: pixelBuffer) // or maybe CIImage? print("CIImage \(image)") } } } } struct ImmersiveView: View { var body: some View { RealityView { content in if let scene = try? await Entity(named:"Immersive", in: realityKitContentBundle) { content.add(scene) } let viewcontroller = ViewController() viewcontroller.viewDidLoad() }