迅速的視頻文件目錄

Question

我需要用視頻捕捉UIImagePicker保存到一個自定義文件夾中的應用程序文件目錄

func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) { 
    picker.dismissViewControllerAnimated(true, completion: nil) 
    if let fileURL = info[UIImagePickerControllerMediaURL] as? NSURL { 
     if let videoData = NSData(contentsOfURL: fileURL) { 
      //save file to doc dir or save NSData into Core Data binary field 

     } 
    } 
} 

或者我可以節省可視數據與外部存儲核心數據的二進制領域，但之後我不能用媒體播放器播放視頻，因爲我無法將NSData轉換爲NSURL。

Answer 1

試試這個。 Swift 2.2

var uniqueVideoID = "" 
    var videoURL: NSURL? = NSURL() 
    var uniqueID = "" 

    //Add this to ViewDidLoad 
    uniqueID = NSUUID().UUIDString 

      //Getting the path as URL and storing the data in myVideoVarData. 
     videoURL = info[UIImagePickerControllerMediaURL] as? NSURL 
     let myVideoVarData = NSData(contentsOfURL: videoURL!)! 

     //Now writeing the data to the temp diroctory. 
     let tempPath = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomainMask.UserDomainMask, true) 
     let tempDocumentsDirectory: AnyObject = tempPath[0] 
      uniqueVideoID = uniqueID + "TEMPVIDEO.MOV" 
     let tempDataPath = tempDocumentsDirectory.stringByAppendingPathComponent(uniqueVideoID) 
      myVideoVarData.writeToFile(tempDataPath, atomically: false) 

     //Getting the time value of the movie. 
     let fileURL = NSURL(fileURLWithPath: tempDataPath) 
     let asset = AVAsset(URL: fileURL) 
     let duration : CMTime = asset.duration 


     //Now we remove the data from the temp Document Diroctory. 
     do{ 
     let fileManager = NSFileManager.defaultManager() 
     try fileManager.removeItemAtPath(tempDataPath) 
     } catch { 
      //Do nothing 
     } 

     // Cheacking to see if video is under the 18500 (:30 seconds). 
     if duration.value <= 18500 { 


     //Here we are writing the data to the Document Directory for use later on. 
     let docPaths = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomainMask.UserDomainMask, true) 
     let documentsDirectory: AnyObject = docPaths[0] 
      uniqueVideoID = uniqueID + "VIDEO.MOV" 
     let docDataPath = documentsDirectory.stringByAppendingPathComponent(uniqueVideoID) 
      myVideoVarData.writeToFile(docDataPath, atomically: false) 
      print("docDataPath under picker ",docDataPath) 

     //This creates a thumbnail image. 
     let assetImageGenerate = AVAssetImageGenerator(asset: asset) 
      assetImageGenerate.appliesPreferredTrackTransform = true 
     let time = CMTimeMake(asset.duration.value/3, asset.duration.timescale) 

     //This adds the thumbnail to the imageview. 
     if let videoImage = try? assetImageGenerate.copyCGImageAtTime(time, actualTime: nil) { 
      videoThumbnailOutlet.image = UIImage(CGImage: videoImage) 
      } 
     }else{ 
      //Do nothing 
    } 

現在播放視頻。

//Note: The _videoData_ is the same as the _uniqueID_ 
    var videoData = "" 


    func play(){ 

    let paths = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true) 
    let documentsDirectory = paths[0] 

    let videoDataPath = documentsDirectory + "/" + videoData + "VIDEO.MOV" 

    let filePathURL = NSURL.fileURLWithPath(videoDataPath) 


    let player = AVPlayer(URL: filePathURL) 
    let playerController = AVPlayerViewController() 
     playerController.player = player 
    self.presentViewController(playerController, animated: true) { 
     player.play() 


    } 
    } 

Answer 2

嘗試此斯威夫特3

var uniqueVideoID = "" 
    var videoURL:NSURL? = NSURL() 
    var uniqueID = "" 

    //Add this to ViewDidLoad 
    uniqueID = NSUUID().UUIDString 


    //Getting the path as URL and storing the data in myVideoVarData. 
      videoURL = info[UIImagePickerControllerMediaURL] as? URL as NSURL? 
     let myVideoVarData = try! Data(contentsOf: videoURL! as URL) 

     //Now writeing the data to the temp diroctory. 
     let tempPath = NSSearchPathForDirectoriesInDomains(FileManager.SearchPathDirectory.documentDirectory, FileManager.SearchPathDomainMask.userDomainMask, true) 
     let tempDocumentsDirectory: AnyObject = tempPath[0] as AnyObject 
      uniqueVideoID = uniqueID + "TEMPVIDEO.MOV" 
     let tempDataPath = tempDocumentsDirectory.appendingPathComponent(uniqueVideoID) as String 
      try? myVideoVarData.write(to: URL(fileURLWithPath: tempDataPath), options: []) 

     //Getting the time value of the movie. 
     let fileURL = URL(fileURLWithPath: tempDataPath) 
     let asset = AVAsset(url: fileURL) 
     let duration : CMTime = asset.duration 
      videoAlertIdVar = duration.value // Control for the runVideoAlert function. 

     //Now we remove the data from the temp Document Diroctory. 
     do{ 
     let fileManager = FileManager.default 
     try fileManager.removeItem(atPath: tempDataPath) 
     } catch { 
      //Do nothing 
     } 

     // Cheacking to see if video is under the 18500 (:30 seconds). 
     if duration.value <= 18500 { 
      yesOrNo = "no" //Control for the button in the mainViewController is hidden or not. The default is "yes" 

     //Here we are writing the data to the Document Directory for use later on. 
     let docPaths = NSSearchPathForDirectoriesInDomains(FileManager.SearchPathDirectory.documentDirectory, FileManager.SearchPathDomainMask.userDomainMask, true) 
     let documentsDirectory: AnyObject = docPaths[0] as AnyObject 
      uniqueVideoID = uniqueID + "VIDEO.MOV" 
     let docDataPath = documentsDirectory.appendingPathComponent(uniqueVideoID) as String 
      try? myVideoVarData.write(to: URL(fileURLWithPath: docDataPath), options: []) 
      print("docDataPath under picker ",docDataPath) 

     //This creates a thumbnail image. 
     let assetImageGenerate = AVAssetImageGenerator(asset: asset) 
      assetImageGenerate.appliesPreferredTrackTransform = true 
     let time = CMTimeMake(asset.duration.value/3, asset.duration.timescale) 

     //This adds the thumbnail to the imageview. 
     if let videoImage = try? assetImageGenerate.copyCGImage(at: time, actualTime: nil) { 
      videoThumbnailOutlet.image = UIImage(cgImage: videoImage) 
      } 
     }else{ 
      //Do nothing 
    } 

播放視頻

//Note: The _videoData_ is the same as the _uniqueID_ 
    var videoData = "" 

    func play(){ 

    let paths = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true) 
    let documentsDirectory = paths[0] 

    let videoDataPath = documentsDirectory + "/" + videoData + "VIDEO.MOV" 

    let filePathURL = URL(fileURLWithPath: videoDataPath) 


    let player = AVPlayer(url: filePathURL) 
    let playerController = AVPlayerViewController() 
     playerController.player = player 
    self.present(playerController, animated: true) { 
     player.play() 


    } 
}