How to record video on the screen in a landscape application?

Question

It makes my head.

I am working from this sample project: https://github.com/jj0b/AROverlayExample

It works great. only problem is the portrait app. Therefore, when I rotate the device to the landscape, the video is still displayed as desired, but all my shortcuts and the user interface are now sideways.

To fix this, I set the landscape only in info.plist file

The problem is this:

Here is my code:

- (id)initWithFrame:(CGRect)frame { self = [super initWithFrame:frame]; if (self) { self.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight; assert( self.autoresizesSubviews ); CGPoint layerRectCenter = CGPointMake( CGRectGetMidX( frame ), CGRectGetMidY( frame ) ); // Initialization code self.captureSession = [[[AVCaptureSession alloc] init] autorelease]; // addVideoInput { AVCaptureDevice* videoDevice = [AVCaptureDevice defaultDeviceWithMediaType: AVMediaTypeVideo]; if (videoDevice) { NSError *error; AVCaptureDeviceInput* videoIn = [AVCaptureDeviceInput deviceInputWithDevice: videoDevice error:&error]; if ( ! error ) { if ( [self.captureSession canAddInput:videoIn] ) [self.captureSession addInput:videoIn]; else NSLog(@"Couldn't add video input"); } else NSLog(@"Couldn't create video input"); } else NSLog(@"Couldn't create video capture device"); } // addVideoPreviewLayer { self.previewLayer = [[[AVCaptureVideoPreviewLayer alloc] initWithSession: self.captureSession] autorelease]; self.previewLayer.videoGravity = AVLayerVideoGravityResizeAspectFill; self.previewLayer.frame = CGRectMake(0, 0, 480, 300); self.previewLayer.orientation = AVCaptureVideoOrientationLandscapeRight; //self.previewLayer.frame = frame; [self.layer addSublayer: self.previewLayer]; } // run! [self.captureSession startRunning]; } return self; } 

I can’t understand why the video is displayed on the side, and even though setting the layer frame to landscape CGRectMake (0, 0, 480, 300) goes out.

Answer 1

A very neat solution is to add the view directly to the window.

This is best done in the root view controller:

 // need to add the capture view to the window here: can't do it in viewDidLoad as the window is not ready at that point - (void) viewDidAppear: (BOOL) animated { self.frontCamView = [[[FrontCamView alloc] initWithFrame: [UIScreen mainScreen].bounds] autorelease]; self.view.opaque = NO; self.view.backgroundColor = [UIColor clearColor]; [self.view.window addSubview: self.frontCamView]; [self.view.window sendSubviewToBack: self.frontCamView]; } 

Then the camera implementation itself is executed:

 @interface FrontCamView ( ) @property (retain) AVCaptureVideoPreviewLayer* previewLayer; @property (retain) AVCaptureSession* captureSession; @end // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - @implementation FrontCamView @synthesize captureSession; @synthesize previewLayer; // - - - - (id)initWithFrame:(CGRect)frame { self = [super initWithFrame:frame]; if (self) { self.captureSession = [[[AVCaptureSession alloc] init] autorelease]; // addVideoInput { AVCaptureDevice* videoDevice = [AVCaptureDevice defaultDeviceWithMediaType: AVMediaTypeVideo]; if (videoDevice) { NSError *error; AVCaptureDeviceInput* videoIn = [AVCaptureDeviceInput deviceInputWithDevice: videoDevice error:&error]; if ( ! error ) { if ( [self.captureSession canAddInput:videoIn] ) [self.captureSession addInput:videoIn]; else NSLog(@"Couldn't add video input"); } else NSLog(@"Couldn't create video input"); } else NSLog(@"Couldn't create video capture device"); } // addVideoPreviewLayer { CGRect screenRect = [UIScreen mainScreen].bounds; self.previewLayer = [[[AVCaptureVideoPreviewLayer alloc] initWithSession: self.captureSession] autorelease]; self.previewLayer.videoGravity = AVLayerVideoGravityResizeAspectFill; self.previewLayer.frame = screenRect; self.previewLayer.orientation = AVCaptureVideoOrientationPortrait; [self.layer addSublayer: self.previewLayer]; } // run! [self.captureSession startRunning]; } return self; } - (void) dealloc { [self.captureSession stopRunning]; [previewLayer release], previewLayer = nil; [captureSession release], captureSession = nil; [super dealloc]; } @end