String(data: data, encoding: NSUTF8StringEncoding) return nil - swift

Question

I am using JSQMessage and pare to send and save video files
if (mediaType == kUTTypeVideo as String) || (mediaType == kUTTypeMovie as String) {
let movieURL = info[UIImagePickerControllerMediaURL] as? NSURL
let videoMediaItem = JSQVideoMediaItem.init(fileURL: movieURL, isReadyToPlay: true)
let message = JSQMessage(senderId: self.senderId, senderDisplayName: senderDisplayName, date: NSDate(), media: videoMediaItem)
self.saveMediaToParse(message, data: NSData(contentsOfURL: movieURL!)!, fileName:"videoFile")
self.messages += [message]
self.publishMessageToChannel(message)
self.finishSendingMessage()
}
func saveMediaToParse(message:JSQMessage, data:NSData, fileName:String) {
let imageFile = PFFile.init(data: data)
let msg = PFObject(className: "test")
msg["senderId"] = message.senderId
msg[fileName] = imageFile
msg["senderDisplayName"] = message.senderDisplayName
msg["user"] = PFUser.currentUser()
msg.saveInBackgroundWithBlock { (success, error) -> Void in
if(error != nil) {
NSLog("error: %#",(error?.localizedDescription)!)
}
}
}
when I am trying to get the video URL from the data as String I get back nil value. What am I doing wrong?
message["videoFile"].getDataInBackgroundWithBlock({ (data, error) -> Void in
if let data = data where error == nil {
**let dataStr = String(data: data, encoding: NSUTF8StringEncoding)**
let movieUrl = NSURL(string: dataStr!)
let videoMediaItem = JSQVideoMediaItem.init(fileURL: movieUrl, isReadyToPlay:true)
jsqMessage = JSQMessage(senderId:message["senderId"] as! String, displayName: message["senderDisplayName"] as! String, media: videoMediaItem)
self.messages.append(jsqMessage)
self.collectionView?.reloadData()
self.scrollToBottomAnimated(true)
}
})
}
self.messages.append(jsqMessage)

Answer 1

Ended up doing
let dataStr = NSTemporaryDirectory() + "temp.mov"
data.writeToFile(dataStr, atomically: true)
let movieUrl = NSURL(fileURLWithPath: dataStr)
Instead of
let dataStr = String(data: data, encoding: NSUTF8StringEncoding)**