iOS AVPlayer无法播放所有远程文件

Question

I'm using SwiftyDropbox 's getTemporaryLink() to play a video in an AVPlayer . I have six test files, and they all work as expected, except 1.

The one that doesn't work is 41 MB in size (which I would not consider a large video file), the rest are < 22 MB.

I've read the AVFoundation and SwiftDropbox documentation many times and haven't been able to find anything on a maximum file size, though I wouldn't expect a maximum file size for streaming content. I would expect it to continuously play smaller chunks downloaded to memory.

My questions are:

1. Is there a file size limit on playing a remote URL in an AVPlayer ?
2. If not, is there a certain way I need to use AVPlayer in order to stream these larger files?

I'm using the following code to start the AVPlayer :

self.previewPlayer.replaceCurrentItem(with: AVPlayerItem(url: URL(fileURLWithPath: url)))
self.previewPlayer.play()

Thank-you!

Answer 1

You should observe the value of status property to know why the playerItem might have failed to play. Here's a small code snippet to start with:

1. Add observer

    let url = URL.init(string: "your url string") let item = AVPlayerItem.init(url: url!) item.addObserver(self, forKeyPath: "status", options: .new, context: nil) 

2. Check for the the error

    override func observeValue(forKeyPath keyPath: String?, of object: Any?, change: [NSKeyValueChangeKey : Any]?, context: UnsafeMutableRawPointer?) { if let item = object as? AVPlayerItem, keyPath == "status" { if item.status == .failed { print(item.error?.localizedDescription ?? "Unknown error") } } }