前几天我被要求检查一下在下载视频的同时播放视频有多难。我知道这是一项简单的任务,因为之前有人告诉过我。所以,我检查了一下,结果发现非常简单。
问题是我想保存视频到磁盘上,以免强迫用户一遍又一遍地下载它。
问题在于如何访问缓冲区并将其存储到磁盘中。
Stackoverflow 上有很多答案说这是不可能的,尤其是对于视频来说。
我原来用于播放视频的代码:
import AVFoundation
....
//MARK: - Accessors
lazy var player: AVPlayer = {
var player: AVPlayer = AVPlayer(playerItem: self.playerItem)
player.actionAtItemEnd = AVPlayerActionAtItemEnd.None
return player
}()
lazy var playerItem: AVPlayerItem = {
var playerItem: AVPlayerItem = AVPlayerItem(asset: self.asset)
return playerItem
}()
lazy var asset: AVURLAsset = {
var asset: AVURLAsset = AVURLAsset(URL: self.url)
return asset
}()
lazy var playerLayer: AVPlayerLayer = {
var playerLayer: AVPlayerLayer = AVPlayerLayer(player: self.player)
playerLayer.frame = UIScreen.mainScreen().bounds
playerLayer.backgroundColor = UIColor.clearColor().CGColor
return playerLayer
}()
var url: NSURL = {
var url = NSURL(string: "https://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4")
return url!
}()
//MARK: - ViewLifeCycle
override func viewDidLoad() {
super.viewDidLoad()
view.layer.addSublayer(playerLayer)
player.play()
}
Error Domain=AVFoundationErrorDomain Code=-11838 "Operation Stopped" UserInfo={NSUnderlyingError=0x61800024ebe0 {Error Domain=NSOSStatusErrorDomain Code=-12109 "(null)"}, NSLocalizedFailureReason=该媒体不支持此操作, NSLocalizedDescription=操作停止}
。我确认了outputURL
和outputFileType
是正确的。 - Lane Rettig