如何从视频网址获取 NSData？答案

【问题标题】：How do I get NSData from a video url?如何从视频网址获取 NSData？
【发布时间】：2016-12-30 16:59:31
【问题描述】：

我正在尝试从 UIImagePicker 获取视频并将其作为数据通过我的 restkit API 发送。

func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
        let videoURL = info["UIImagePickerControllerReferenceURL"] as? NSURL

var movieData: NSData?
        do {
            movieData = try NSData(contentsOfURL: videoPath, options: .DataReadingMappedIfSafe)
        } catch {
            print(error)
            movieData = nil
            return
        }

// Multipart Form Request for RestKit POST goes here

        imagePickerController.dismissViewControllerAnimated(true, completion: nil)
    }

得到以下错误：

Error Domain=NSCocoaErrorDomain Code=256 "无法打开文件“asset.MOV”。" UserInfo={NSURL=assets-library://asset/asset.MOV?id=B906AB1B-F311-47BA-8FE9-EE7AADDB7796&ext=MOV}

【问题讨论】：

NSCocoaErrorDomain Code=256的可能重复
NSURL(fileURLWithPath: videoPath)

标签： ios swift video nsdata

【解决方案1】：

    func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
            let videoURL = info["UIImagePickerControllerMediaURL"] as? NSURL
             do {
                let video = try NSData(contentsOfURL: videoPath, options: .DataReadingMappedIfSafe)
             } catch {
                print(error)
                return
             }
            imagePickerController.dismissViewControllerAnimated(true, completion: nil)
    }

【讨论】：

【解决方案2】：

这是我如何处理来自设备的视频：

@IBAction func addVideoFromDevice(_ sender: AnyObject) {
    let mediaUI = UIImagePickerController()
    mediaUI.sourceType = .savedPhotosAlbum
    mediaUI.mediaTypes = [kUTTypeMovie as NSString as String]
    mediaUI.allowsEditing = true
    mediaUI.delegate = self
    present(mediaUI, animated: true, completion: nil)
}

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
    let mediaType = info[UIImagePickerControllerMediaType] as! NSString
    if mediaType == kUTTypeMovie {
        let videoURL = info[UIImagePickerControllerMediaURL] as! NSURL
        let avAsset = AVAsset(url: videoURL as URL) //>selected video
    } else{
        print("error @ mediaType-didFinishPickingMediaWithInfo")
    }
    dismiss(animated: true, completion: nil)
}

希望对你有帮助:)

【讨论】：