我无法在 swift 2.3 中播放保存在目录路径和 AVPlayer 中的视频

Question

我正在使用AVFoundation 录制视频，并从视频中创建了预览，当我完成录制视频时，视频正在预览中播放，但是当我使用以下方式保存视频时：

var fileName = "\(self.tField.text!).mp4"
fileName = fileName.stringByReplacingOccurrencesOfString(" ", withString: "_")

let path = NSFileManager.defaultManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask)[0]
//let originVideoFile = self.filePath
let destinationVideoFile = path.URLByAppendingPathComponent(fileName)
let data = NSData(contentsOfURL: self.filePath)

//try data!.writeToURL(destinationVideoFile!, options: [])
let fileManager = NSFileManager()
fileManager.createFileAtPath((destinationVideoFile?.path)!, contents: data, attributes: nil)

视频文件已创建，但当我想重新播放视频时无权访问此文件，但相机胶卷可以播放视频。

为了得到“filePath”，我使用的是AVFoundation的委托方法：

func captureOutput(captureOutput: AVCaptureFileOutput!, didFinishRecordingToOutputFileAtURL outputFileURL: NSURL!, fromConnections connections: [AnyObject]!, error: NSError!) {

    print("capture did finish")
    print(captureOutput);
    print(outputFileURL);
    self.filePath = outputFileURL
    performSegueWithIdentifier("previewVideo", sender: self)

}

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
    if segue.identifier == "previewVideo"{
        let destination = segue.destinationViewController as! PreviewVC
        destination.filePath = self.filePath
        destination.videoDelegate = self.videoDelegate
    }
}

并使用“prepareForSegue”传递数据

我返回一个包含所需信息的视频对象，当我想重新播放视频时，我使用集合视图的方法“didSelect”创建一个“AVPlayer”并使用文件名找到视频的路径，则文件存在但无法播放

func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath) {


    videoSingleObject = videoObjects[indexPath.item]
    let path = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0] as String
    let url = NSURL(fileURLWithPath: path)
    let filePath = url.URLByAppendingPathComponent(videoSingleObject.nameOfFile)!.path!
    let fileManager = NSFileManager.defaultManager()
    if fileManager.fileExistsAtPath(filePath) {
        print("FILE AVAILABLE")
        UISaveVideoAtPathToSavedPhotosAlbum(filePath, nil, nil, nil)
        print("PATH: \(filePath)")
        let videoPath = NSURL(string: filePath)!
        //filePathURL = videoPath
        print(videoPath)
        asset = AVAsset(URL: videoPath)
        playerItem = AVPlayerItem(asset: asset)
        print("DURATION: \(CMTimeGetSeconds(asset.duration))")
        player = AVPlayer(playerItem: playerItem)
        playerViewController.player = player
        self.presentViewController(playerViewController, animated: true, completion: nil)
        player.play()
        }else {
        print("THE DIRECTORY NOT EXIST")
    }
}

但我使用“UISaveVideoAtPathToSavedPhotosAlbum(filePath, nil, nil, nil)”分享cameraRoll中的视频，而cameraRoll中的视频是可以播放的。

Answer 1

我发现了错误，问题是 URL 引用，我使用的是 NSURL(string: filePath)，我使用 NSURL(fileURLwithPath: filePath) 解决了问题