How to implement guide with avplayer buffering state implementation guide correctly in ios 16
I'm experiencing a frustrating scenario with AVPlayer where the buffering state doesn't seem to update correctly after switching between different video streams. I'm using iOS 16 and have set up my player with an AVPlayerItem that I expect to observe for its status changes. However, when I switch the video URLs, the player sometimes remains in a buffering state even after the new content should be playable. Here's a simplified version of my setup: ```swift import AVFoundation class VideoPlayerViewController: UIViewController { var player: AVPlayer! var playerItem: AVPlayerItem! override func viewDidLoad() { super.viewDidLoad() setupPlayer(with: "https://example.com/video1.mp4") } func setupPlayer(with url: String) { let videoURL = URL(string: url)! playerItem = AVPlayerItem(url: videoURL) player = AVPlayer(playerItem: playerItem) player.addObserver(self, forKeyPath: "status", options: [.new, .old], context: nil) player.play() } func switchVideo(to url: String) { player.replaceCurrentItem(with: nil) setupPlayer(with: url) // setting up new player with new video URL } override func observeValue(forKeyPath keyPath: String?, of object: Any?, change: [NSKeyValueChangeKey : Any]?, context: UnsafeMutableRawPointer?) { if keyPath == "status" { if player.status == .readyToPlay { print("Player is ready to play") } else if player.status == .failed { print("Player failed with behavior: \(String(describing: player.behavior))") } } } } ``` I've tried replacing the current player item with `nil` before setting up a new one, but often the status remains `.unknown` or `.failed` for longer than expected. I also check for the current status right after initiating the new player, but it leads to inconsistent behaviors. I've added some logging to track the `playerItem`'s `loadedTimeRanges`, but it doesn't help reveal why the buffering state is inconsistent. Could the scenario be related to how AVPlayer caches previous items? Or is there a better approach to managing player items when switching videos? Any insights or best practices would be greatly appreciated!