avcapturesession

My app is landscape only. I'm presenting the AVCaptureVideoPreviewLayer like this: self.previewLayer = [[AVCaptureVideoPreviewLayer alloc] initWithSession:session]; [self.previewLayer setBackgroundColor:[[UIColor blackColor] CGColor]]; [self.previewLayer setVideoGravity:AVLayerVideoGravityResizeAspect]; NSLog(@"previewView: %@", self.previewView); CALayer *rootLayer = [self.previewView layer]; [rootLayer setMasksToBounds:YES]; [self.previewLayer setFrame:[rootLayer bounds]]; NSLog(@"previewlayer: %f, %f, %f, %f", self.previewLayer.frame.origin.x, self.previewLayer.frame.origin.y, self

I need the same functionality as the application Instant Heart Rate . The basic process requires the user to: Place the tip of the index finger gently on the camera lens. Apply even pressure and cover the entire lens. Hold it steady for 10 seconds and get the heart rate. This can be accomplished by turning the flash on and watch the light change as the blood moves through the index finger. How can I get the light level data from the video capture? Where should I look for this? I looked through the class AVCaptureDevice but didn't find anything useful. I also found

Whenever I start an AVCaptureSession running with the microphone as an input it cancels whatever background music is currently running (iPod music for instance). If I comment out the line adding the audio input, the background audio continues. Does anyone know a way to record video clips with the microphone while continuing to allow background audio to play? Also there is error, when you trying to record video and the music is currently playing. A tried to do like this: [[AVAudioSession sharedInstance] setCategory: AVAudioSessionCategoryPlayback error: nil]; UInt32 doSetProperty = 1;

Using this tutorial here: http://www.musicalgeometry.com/?p=1297 I have created a custom overlay and image capture with AVCaptureSession . I am attempting to allow the user to switch between the front and back camera. Here is my code in CaptureSessionManager to switch cameras: - (void)addVideoInputFrontCamera:(BOOL)front { NSArray *devices = [AVCaptureDevice devices]; AVCaptureDevice *frontCamera; AVCaptureDevice *backCamera; for (AVCaptureDevice *device in devices) { //NSLog(@"Device name: %@", [device localizedName]); if ([device hasMediaType:AVMediaTypeVideo]) { if ([device position] ==

We capture video on iOS while using setPreferredVideoStabilizationMode:AVCaptureVideoStabilizationModeAuto , but the video still sometimes comes out blurry at the start and at the end (fine in the middle, though), which is very problematic because we grab the first frame as a still image (in order to enable video & photo capabilities without switching camera modes). Placing the device flat on a desk removes all blurriness, so the whole video is sharp throughout. This suggests it has something to do with video stabilization, but is there another property to set? Does locking the focus mode