如何使用 avplayer 从文档目录播放视频文件

Posted 2023-03-07

【中文标题】如何使用 avplayer 从文档目录播放视频文件

【英文标题】：How to play video file from documentdirectory using avplayer

【发布时间】：2017-09-12 13:55:19

【问题描述】：

我正在 ios 中创建视频播放器应用程序，如果我将 mp4 文件存储在捆绑资源中，或者如果我流式传输 url，它工作正常，但如果我将文件存储在文档目录中并且我尝试使用 avplayer 播放它不播放我应该对文档目录中的脱机文件进行不同的处理吗

代码：

let fileManager = FileManager()
        let destinationURLForFile = URL(fileURLWithPath: documentDirectoryPath.appendingFormat("/myvideo.mp4"))
   self.playVideo(filePath: destinationURLForFile.path)


   func playVideo(filePath:String)
    
        var playerItem = AVPlayerItem.init(url:URL.init(string: filePath)!)

        var player = AVPlayer(playerItem: playerItem)
        var playerLayer = AVPlayerLayer(player: player)
        playerLayer.frame = self.view.frame
        self.view.layer.addSublayer(playerLayer)
        player.play()

    

【参考方案1】：

试试这个，用 Swift 3.0 编写，

let fm = FileManager.default
let docsurl = try! fm.url(for:.documentDirectory, in: .userDomainMask, appropriateFor: nil, create: false)
let path = docsurl.appendingPathComponent("myvideo.mp4")
playVideo(filePath: path)

func playVideo(filePath:String)

    var playerItem = AVPlayerItem(url: URL(fileURLWithPath: filePath)
    var player = AVPlayer(playerItem: playerItem)
    var playerLayer = AVPlayerLayer(player: player)
    playerLayer.frame = self.view.frame
    self.view.layer.addSublayer(playerLayer)
    player.play()

【讨论】：

两者一样没有区别

您错过了检索问题中文档路径的代码行。

将playVideo(filePath: path) 替换为playVideo(filePath: path.path)

【参考方案2】：

swift 3/4 100%%%%%%% 可行

录像机打开摄像机

@IBAction func RecordAction(_ sender: Any) 

        if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.camera)
            print("CameraAvailable")
            let imagePicker = UIImagePickerController()
            imagePicker.delegate = self
            imagePicker.sourceType = .camera
            imagePicker.mediaTypes = [kUTTypeMovie as String]
            imagePicker.allowsEditing = false
            imagePicker.showsCameraControls = true

            self.present(imagePicker,animated: true, completion: nil)
        

        else
            print("CameraNotAvailable")
        
    

保存到文档目录

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) 
        // recover video URL
        let url = info[UIImagePickerControllerMediaURL] as? URL
        // check if video is compatible with album
        let compatible: Bool = UIVideoAtPathIsCompatibleWithSavedPhotosAlbum((url?.path)!)
        // save
        if compatible 
            UISaveVideoAtPathToSavedPhotosAlbum((url?.path)!, self, nil, nil)
            print("saved!!!! \(String(describing: url?.path))")

        
        videopath = url //save url to send next function play video
        dismiss(animated: true, completion: nil)
    
//   error
    func video(_ videoPath: String, didFinishSavingWithError error: Error?, contextInfo: UnsafeMutableRawPointer) 
    

从文档目录播放视频

 @IBAction func playvideo(_ sender: Any)
    
        let player = AVPlayer(url: videopath!)  // video path coming from above function

        let playerViewController = AVPlayerViewController()
        playerViewController.player = player
        self.present(playerViewController, animated: true) 
            playerViewController.player!.play()
        

【参考方案3】：

我尝试了包括上述在内的几种方法，但发现每次启动应用程序时文档路径都会更改，这会更改url的第一部分。

这有助于我获取文件的当前位置

                  let documentsPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0]
                let playerItem = AVPlayerItem(url: URL(fileURLWithPath: documentsPath.appendingFormat("/\(clipId).mp4")))
                player = AVPlayer(playerItem: playerItem)

希望这对某人有所帮助

【讨论】：

它工作，这实际上很聪明，你帮助了我，谢谢你我看到你有 clipId，我猜你正在制作一个视频应用程序，无论如何我试着给你帮助，你呢想要一个带有 youtube 视频 url 下载链接的 json 响应的 url，我会给你，非常感谢