如何快速拍摄高质量的视频/照片？

如何提高相机质量？我想采取全屏显示的图片/视频？如果我将会话预设置为AVCaptureSessionPresetPhoto，那么它的质量和全屏都很高，但仅适用于照片而不适用于视频。我试过了其他一切，但没有任何效果。目前，它看起来像这样：如何快速拍摄高质量的视频/照片？

编辑

为什么看起来我的图片这样呢？

@IBAction func takePhoto(sender: AnyObject) { 
    var imageViewBackground: UIImageView! 
    self.fullScreenView.hidden = false 
    self.recordButton.enabled = false 
    self.takephoto.enabled = false 
    self.recordButton.hidden = true 
    self.takephoto.hidden = true 

    session.startRunning() 

    // add the AVCaptureVideoPreviewLayer to the view and sets the view in fullscreen 
    fullScreenView.frame = view.bounds 
    videoPreviewLayer.frame = fullScreenView.bounds 
    fullScreenView.layer.addSublayer(videoPreviewLayer) 

    // add action to fullScreenView 
    gestureFullScreenView = UITapGestureRecognizer(target: self, action: #selector(ViewController.takePhoto(_:))) 
    self.fullScreenView.addGestureRecognizer(gestureFullScreenView) 

    // add action to myView 
    gestureView = UITapGestureRecognizer(target: self, action: #selector(ViewController.setFrontpage(_:))) 
    self.view.addGestureRecognizer(gestureView) 

    if (preview == true) { 
     if let videoConnection = stillImageOutput!.connectionWithMediaType(AVMediaTypeVideo) { 
      // code for photo capture goes here... 

      stillImageOutput?.captureStillImageAsynchronouslyFromConnection(videoConnection, completionHandler: { (sampleBuffer, error) -> Void in 
       // process the image data (sampleBuffer) here to get an image file we can put in our view 

       if (sampleBuffer != nil) { 
        let imageData = AVCaptureStillImageOutput.jpegStillImageNSDataRepresentation(sampleBuffer) 
        let dataProvider = CGDataProviderCreateWithCFData(imageData) 
        let cgImageRef = CGImageCreateWithJPEGDataProvider(dataProvider, nil, true, CGColorRenderingIntent.RenderingIntentDefault) 
        let image = UIImage(CGImage: cgImageRef!, scale: 1.0, orientation: UIImageOrientation.Right) 

        self.fullScreenView.hidden = true 
        self.fullScreenView.gestureRecognizers?.forEach(self.fullScreenView.removeGestureRecognizer) 
        self.session.stopRunning() 

        // save image to the library 
        UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil) 

        imageViewBackground = UIImageView(frame: CGRectMake(0, 0, self.width, self.height)) 
        imageViewBackground.image = image 
        imageViewBackground.tag = self.key 

        self.view.addSubview(imageViewBackground) 
       } 
      }) 
     } 
    } 
}

来源

2016-07-31 mafioso

使用AVCaptureSessionPresetHigh

https://developer.apple.com/library/ios/documentation/AVFoundation/Reference/AVCaptureSession_Class/index.html#//apple_ref/c/data/AVCaptureSessionPresetHigh

然后，你需要设置你的全屏视频的工作重心。

captureVideoPreviewLayer.videoGravity = AVLayerVideoGravityResizeAspectFill;

来源

2016-07-31 16:11:14 TheValyreanGroup

如果我想要全屏照片，则iPad无法正常工作 – mafioso

我刚刚在Air 2上测试过，它确实有效。你在用什么？ – TheValyreanGroup

我编辑了我的帖子，现在你看到了它的样子 – mafioso

如何快速拍摄高质量的视频/照片？

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