Question

我正在尝试建立一个表格视图，并在每个表格视图单元格中加载视频。我目前拥有它，因此可以在视图控制器中将视频下载并保存到缓存的URL。然后，该缓存的url被提供给表视图单元控制器，在该控制器中应将视频加载到其中，但是它不起作用。

当我放置来自youtube的常规视频链接或未缓存的链接时，视频播放正常。但是，当我尝试使用此缓存的URL时，AVKit将无法播放视频。

我在这里实际下载这些视频URL：

Database.database().reference().child("posts").observe(.value, with: {
            (snapshot) in
            if let snapshot = snapshot.children.allObjects as? [DataSnapshot]{
                self.posts.removeAll()
                for data in snapshot{
                    print(data)
                    if let postDict = data.value as? Dictionary<String, AnyObject>{
                        let key = data.key
                        let post = Post(postKey: key, postData: postDict)
                        CacheManager.shared.getFileWith(stringUrl: post.videoLink) { result in
                            switch result {
                            case .success(let url):
                                post.downloadedURL = url;
                            case .failure(let error):
                                print("Error: \(error.localizedDescription)")
                            }
                        self.posts.append(post)
                    }
                }

            }
            self.tableView.reloadData()
            }
        })

这是表格视图单元格控制器中的代码，在单元格加载时会被调用：

func configCell(post: Post, img: UIImage? = nil, userImg: UIImage? = nil) {
       // let playerItem = CachingPlayerItem(url: URL(string: post.videoLink)!)
        //player = AVPlayer(playerItem: playerItem)
        //print(post.downloadedURL.)
        let item = AVPlayerItem(asset: AVAsset(url: post.downloadedURL))
        self.player = AVPlayer(playerItem: item)
        self.avPlayerLayer = AVPlayerLayer(player: self.player)
        self.avPlayerLayer.videoGravity = AVLayerVideoGravity.resizeAspectFill
        self.player.automaticallyWaitsToMinimizeStalling = false
        self.postVideo.layer.addSublayer(self.avPlayerLayer)

        print("hello here we go: \(self.player.error?.localizedDescription)")

        NotificationCenter.default.addObserver(forName: .AVPlayerItemDidPlayToEndTime, object: self.player.currentItem, queue: .main) { [weak self] _ in
            self?.player?.seek(to: CMTime.zero)
            self?.player?.play()
        }

这是post.downloadedURL的输出：

"file:///Users/willcohen/Library/Developer/CoreSimulator/Devices/10FE9929-E5D9-4410-B907-372A659CDFD0/data/Containers/Data/Application/DEC0896A-9F58-437D-9F43-D5545C2CE45A/Library/Caches/nnxCgXhXPkwJ0W8U"

我希望AVKit可以像处理来自互联网的常规URL一样处理此缓存的URL，但是不会将其加载到视频中。任何帮助将不胜感激。

如何使AVKit加载已下载的URL

0 个答案: