avcapturesession

In my app I display the camera and I am taking screenshots of certain perts using UIGetScreenImage, (I tried UIGraphicsGetImageFromCurrentImageContext and it works great for screenshots on almost any part of my app but for the camera view it will just return a blank white image) ... Anyways, I fear Apple will reject my app because of UIGetScreenImage... How can I take a "screenshot" of a 50px by 50px box from the upper left corner of the camera without using this method? I searched and all I could find was "AVCaptureSession" and I couldn't find much about what that does, or if it's even what I

I am trying to change the Camera View Front and Back .it is working well.if video is recorded without flipping with Pause/Record Option it is working fine.But if we Flip Camera View once then, further recording video is not saving which leads to AVAssetWriterStatusFailed - The operation could not be completed . Can anybody help me to find where i have gone wrong ? Below is my code. Camera.m - (void)flipCamera{ NSArray * inputs = _session.inputs; for ( AVCaptureDeviceInput * INPUT in inputs ) { AVCaptureDevice * Device = INPUT.device ; if ( [ Device hasMediaType : AVMediaTypeVideo ] ) {

IMPORTANT: if I use: session.sessionPreset = AVCaptureSessionPresetHigh; my preview image is not stretched !! If I save the photo to the device UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil); the image is normal, only in the preview it is stretched. I m using AVFoundation to capture photo. session = [[AVCaptureSession alloc] init]; session.sessionPreset = AVCaptureSessionPresetHigh; CALayer *viewLayer = vImagePreview.layer; NSLog(@"viewLayer = %@", viewLayer); AVCaptureVideoPreviewLayer *captureVideoPreviewLayer = [[AVCaptureVideoPreviewLayer alloc] initWithSession:session];

I want to capture an image with the camera using AVCaptureSession. It works ok, I start the camera and I can get the output. However, I have some problems with video orientation when I rotate the device. First, I want to support landscape left and right orientations and may be portrait modes too later. I implement: - (BOOL) shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation) interfaceOrientation{ return UIInterfaceOrientationIsLandscapse(interfaceOrientation); } When I rotate the device, it rotates the app from landscape left to landscape right or vice versa, but I only see the

I have two view controllers. One is the root VC and contains the UI interface such as the record button. On this view controller, I also display the view of another VC at index 0. This view contains a AVCaptureVideoPreviewLayer. I would like my video camera to mimic the Apple video camera app, where the interface layout adjusts with the rotation, but the video preview layer does not. You can see how the recording timer (UILabel) in the stock video app disappears and reappears at the top depending on the orientation. Any idea how to do this? I found one suggestion that recommendeds adding the

I was trying to get the camera input to show on a preview layer view. self.cameraPreviewView is tied to a UIView in IB Here is my current code that I put together from the AV Foundation Programming Guide. But the preview never shows AVCaptureSession *session = [[AVCaptureSession alloc] init]; session.sessionPreset = AVCaptureSessionPresetHigh; AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo]; NSError *error = nil; AVCaptureDeviceInput *input = [AVCaptureDeviceInput deviceInputWithDevice:device error:&error]; if (!input) { NSLog(@"Couldn't create video

I am learning about AVCaptureSession and how to capture multiple images with its delegate method - (void)captureOutput:(AVCaptureOutput *)captureOutput didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer fromConnection:(AVCaptureConnection *)connection My goal is to capture 1 or many images with a predefined rate per second. For example, 1 or 2 images per 1 second. So I set AVCaptureVideoDataOutput *captureOutput = [[AVCaptureVideoDataOutput alloc] init]; captureOutput.alwaysDiscardsLateVideoFrames = YES; captureOutput.minFrameDuration = CMTimeMake(1, 1); When [self.captureSession