For some reason the AVAssetTrack nominalFrameRate is always 30 for high speed videos. 120 FPS and 240 FPS videos' nominalFrameRate property is always 30. However, 60 FPS videos' nominalFrameRate is 60. I'm reading in the video url through the PHPickerViewController. I have a configuration for the picker set up as follows. configuration = PHPickerConfiguration(photoLibrary: PHPhotoLibrary.shared()) configuration.filter = .videos configuration.selectionLimit = 0 and the gathering of the picker results as follows func picker(_ picker: PHPickerViewController, didFinishPicking results: [PHPickerResult]) { for result in results { var currentVideo = Video() let provider = result.itemProvider provider.loadFileRepresentation(forTypeIdentifier: "public.movie") { url, error in guard error == nil else { return } guard let url = url else {return} // create a new filename let fileName = "\(Int(Date().timeIntervalSince1970)).\(url.pathExtension)" let newUrl = URL(fileURLWithPath: NSTemporaryDirectory() + fileName) // copy item to APP Storage try? FileManager.default.copyItem(at: url, to: newUrl) currentVideo.url = newUrl.absoluteString self.parent.selectedVideos.append(currentVideo) } } // Set isPresented to false because picking has finished. parent.isPresented = false } I'm creating an AVAsset and AVAssetTrack to check the FPS of the video as follows. var asset: AVAsset? = AVAsset(url: url) if let asset = asset, let videoTrack = try? await asset.loadTracks(withMediaType: .video).last { let size = try? await videoTrack.load(.naturalSize) let fps = try? await videoTrack.load(.nominalFrameRate) let duration = try? await test.load(.duration) print(fps) // This shows 30 for 120 fps and 240 fps videos } I'm not sure if there's some other configuration that needs to be set to handle high speed videos or what. I'm really confused.