ビデオをアプリケーションのディレクトリに保存し、ビューコントローラで再生するにはどうすればいいですか？

Question

I'm trying to save a video in my app directory and then play it back in my view controller. I'm having an issue with saving and making the path. Can anyone help?

FUNCのimagePickerController（_ピッカー：UIImagePickerController、didFinishPickingMediaWithInfo情報：[文字列：任意]）私は、このリンクからではなく、更新にコードを使用した {

 // Save the video to the app directory 
     let videoURL = info[UIImagePickerControllerMediaURL] as! NSURL 
     let videoData = NSData(contentsOf: videoURL as URL) 
     let paths = NSSearchPathForDirectoriesInDomains(FileManager.SearchPathDirectory.documentDirectory, FileManager.SearchPathDomainMask.userDomainMask, true) 
     let documentsDirectory: AnyObject = paths[0] as AnyObject 
     let dataPath = documentsDirectory.appendingPathComponent("/vid1.mp4") 

     videoData?.write(toFile: dataPath, atomically: false) 
     self.dismiss(animated: true, completion: nil) 

} 

@IBAction func playVideoAction(_ sender: Any) 
{ 
    let paths = NSSearchPathForDirectoriesInDomains(FileManager.SearchPathDirectory.documentDirectory, FileManager.SearchPathDomainMask.userDomainMask, true) 
    let documentsDirectory: AnyObject = paths[0] as AnyObject 
    let dataPath = documentsDirectory.appendingPathComponent("/vid1.mp4") 

    let videoAsset = (AVAsset(url: NSURL(fileURLWithPath: dataPath) as URL)) 
    let playerItem = AVPlayerItem(asset: videoAsset) 

    let player = AVPlayer(playerItem: playerItem) 
    let playerViewController = AVPlayerViewController() 
    playerViewController.player = player 

    self.present(playerViewController, animated: true) 
    { 
     playerViewController.player!.play() 
    } 
} 

how to save video file into document directory

xcode 8/swift 3にはそれほど有用ではありません。今この問題にしばらくお待ちしています。

Answer 1

PHImageManager.requestExportSession(forVideo:options:)を使用します。これにより、資産を非同期的に準備し（必要に応じてダウンロードするなど）、ファイルを保存するために使用できるAVExportSessionを作成します。オリジナルを指定し、コンテンツをパススルーするように指定することにより（可能な場合）、最高品質のビデオを入手する必要があります。

var dataPath: URL { 
    let paths = NSSearchPathForDirectoriesInDomains(FileManager.SearchPathDirectory.documentDirectory, FileManager.SearchPathDomainMask.userDomainMask, true) 
    let documentsDirectory = URL(fileURLWithPath: paths[0]) 
    return documentsDirectory.appendingPathComponent("/vid1.mp4") 
} 

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) { 
    let url = info[UIImagePickerControllerReferenceURL] as! URL 

    let assets = PHAsset.fetchAssets(withALAssetURLs: [url], options: nil) 
    let asset = assets.object(at: 0) 
    let options = PHVideoRequestOptions() 
    options.version = .original 
    PHImageManager.default().requestExportSession(forVideo: asset, options: options, exportPreset: AVAssetExportPresetPassthrough) { (exportSession, info) in 
     guard let session = exportSession else { return } 
     session.outputURL = self.dataPath 
     session.outputFileType = AVFileTypeMPEG4 
     session.exportAsynchronously { 
      DispatchQueue.main.async { 
       self.dismiss(animated: true, completion: nil) 
      } 
     } 
    } 
} 

あなたは、ディスクに保存したくなかったが、ただ再生、あなたはあなたのプレーヤーで使用することができますAVPlayerItemを取得するためにrequestPlayerItemを使用することができた場合：

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) { 
    let url = info[UIImagePickerControllerReferenceURL] as! URL 

    let assets = PHAsset.fetchAssets(withALAssetURLs: [url], options: nil) 
    let asset = assets.object(at: 0) 
    let options = PHVideoRequestOptions() 
    options.version = .original 
    PHImageManager.default().requestPlayerItem(forVideo: asset, options: options) { (playerItem, info) in 
     let player = AVPlayer(playerItem: playerItem) 
     let playerViewController = AVPlayerViewController() 
     playerViewController.player = player 

     DispatchQueue.main.async { 
      self.dismiss(animated: true, completion: nil) 
      self.present(playerViewController, animated: true) { 
       playerViewController.player!.play() 
      } 
     } 
    } 
}