xcode Swift 将录制的视频保存为 mov 或 mp4

Posted 2023-05-07

【中文标题】xcode Swift 将录制的视频保存为 mov 或 mp4

【英文标题】：xcode Swift Save Recorded Video as mov or mp4

【发布时间】：2016-01-20 05:33:05

【问题描述】：

我一直在寻找一种使用 AVCaptureSession 保存录制视频的方法

这是我的代码：

    @IBOutlet weak var tv: UIView!
    var session:AVCaptureSession?
    var output: AVCaptureVideoDataOutput?
    var previewLayer: AVCaptureVideoPreviewLayer?
    var out:AVCaptureMovieFileOutput!
    var outPath:NSURL?

...关于视图 didload 函数

        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        let filemgr = NSFileManager.defaultManager()
        let documentsURL = filemgr.URLsForDirectory(.DesktopDirectory, inDomains: .UserDomainMask)[0]
        outPath = documentsURL.URLByAppendingPathComponent("temp")

        session = AVCaptureSession()
        session!.sessionPreset = AVCaptureSessionPresetLow

        let camera = AVCaptureDevice.defaultDeviceWithMediaType(AVMediaTypeVideo)
        var deviceInput:AVCaptureDeviceInput?

        do
            try deviceInput = AVCaptureDeviceInput(device: camera)
        catch
        
        session?.addInput(deviceInput)
        previewLayer = AVCaptureVideoPreviewLayer(session: session)
        let frame = CGRect(x: 0, y: 0, width: self.tv.frame.width, height: self.tv.frame.height)
        tv.layer.addSublayer(previewLayer!)
        previewLayer?.frame = frame
        session?.startRunning()

录制按钮操作

        let recordingDelegate:AVCaptureFileOutputRecordingDelegate? = self
        out = AVCaptureMovieFileOutput()
        session?.addOutput(out)
        out.startRecordingToOutputFileURL(outPath, recordingDelegate: recordingDelegate)

...停止按钮操作

        out.stopRecording()

..和委托功能

    func captureOutput(captureOutput: AVCaptureFileOutput!, didFinishRecordingToOutputFileAtURL outPath: NSURL!, fromConnections connections: [AnyObject]!, error: NSError!)
        print("record fin")
        return
    
    func captureOutput(captureOutPut: AVCaptureFileOutput!, didStartRecordingTOOutputFileAtURL outPath: NSURL!, fromConnections connections: [AnyObject]!)
        print("record start")
        return
    

感谢您的帮助:)

编辑： 以下是一些额外的细节

代码中没有错误或警告，应用运行良好 相机预览显示，但问题在于保存录制的视频，当调用 out.startRecordingToOutputFileURL(outPath, recordingDelegate: recordingDelegate) 时，它不保存任何文件

【问题讨论】：

你的代表被叫到了吗？

是的，正在调用委托函数

【参考方案1】：

如果有人碰巧遇到和我一样的问题，这里是解决方案

在委托函数 didfinishrecording 中添加这段代码

    let library = phphotoLibrary.sharedPhotoLibrary()
    library.performChanges(
        PHAssetChangeRequest.creationRequestForAssetFromVideoAtFileURL(outPath)!
        , completionHandler: success, error in
            NSLog("Finished saving asset. %@", (success ? "Success." : error!))
    )

问候