avcapturesession

I'm trying to record a video (without displaying the camera) and save it. But the video being saved is not saving in the right orientation. I've tried forcing the UIViewController to be a certain orientation but that didn't help. All videos are being recorded in portrait. My code is below: session = [[AVCaptureSession alloc] init]; [session beginConfiguration]; session.sessionPreset = AVCaptureSessionPresetHigh; AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo]; for (AVCaptureDevice *cam in [AVCaptureDevice devicesWithMediaType:AVMediaTypeVideo]) { if (cam

I am trying to measure the saturation of a selected color in real-time, like this: I am following this guide from Apple. I updated the code to work with ARC, and of course made my view controller an AVCaptureVideoDataOutputSampleBufferDelegate , but I don't know how to actually start capturing the data, as in starting up the camera to get some actual input. Here is my code: #import "ViewController.h" @interface ViewController () @property (nonatomic, strong) AVCaptureSession *session; @property (nonatomic, strong) AVCaptureVideoPreviewLayer *previewLayer; @end @implementation ViewController -

I'm having lag issues when I'm recording audio+video by using AVCaptureVideoDataOutput and AVCaptureAudioDataOutput. Sometimes the video blocks for a few milliseconds, sometimes the audio is not in sync with the video. I inserted some logs and observed that first I get a lot of video buffers in captureOutput callback, and after some time I get the audio buffers(sometimes I don't receive the audio buffers at all, and the resulting video is without sound). If I comment the code that handles the video buffers, I get the audio buffers without problems. This is the code I'm using: -(void

My goal is to write a custom camera view controller that: Can take photos in all four interface orientations with both the back and, when available, front camera. Properly rotates and scales the preview "video" as well as the full resolution photo. Allows a (simple) effect to be applied to BOTH the preview "video" and full resolution photo. Implementation (on iOS 4.2 / Xcode 3.2.5): Due to requirement (3), I needed to drop down to AVFoundation. I started with Technical Q&A QA1702 and made these changes: Changed the sessionPreset to AVCaptureSessionPresetPhoto. Added an

Using Ray Wenderlich's QRCode reader from Chapter 22 of iOS7 Tutorials , I am successfully reading QRCodes for my current app. I am now extending it that upon successfully reading a QRCode, I want to store the stringValue of the AVMetadataMachineReadableCodeObject that was read, segue to a new view, and use that data on the new view, more or less exactly how most QRCode reader apps (like RedLaser , etc...) process barcodes and QRCodes. However, I call [captureSession stopRunning] (so that it does not read any more QRCodes and trigger additional segues) and there is a 10+ second hang. I have

This is mostly relevant for augmented reality type applications. Apple provides information on how to capture video frames (and save them as images if need be) with AVCaptureSession here: http://developer.apple.com/library/ios/#qa/qa2010/qa1702.html I know that it is possible to create an openGL texture out a captured video frame and then use that as a background in the openGL view over which to overlay other graphics. I am wondering if there are any alternatives to this method? The method mentioned above may be the best (I don't know if it is) but if there are alternatives to try it would be

I want to display the stream of the front and the back facing camera of an iPad2 in two UIViews next to each other. To stream the image of one device I use the following code AVCaptureDeviceInput *captureInputFront = [AVCaptureDeviceInput deviceInputWithDevice:[AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo] error:nil]; AVCaptureSession *session = [[AVCaptureSession alloc] init]; session addInput:captureInputFront]; session setSessionPreset:AVCaptureSessionPresetMedium]; session startRunning]; AVCaptureVideoPreviewLayer *prevLayer = [AVCaptureVideoPreviewLayer layerWithSession

I'd like to use iOS 7's new barcode scanning functionality with a UIImage instead of live capture from one of the device's camera. I already have the detection working fine with an AVCaptureDeviceInput . The best way I think to do this would be to create a concrete subclass of AVCaptureInput that provides media data to an AVCaptureSession from a UIImage . However, I can't find any documentation or examples on how to subclass AVCaptureInput , so I'm at a loss. An alternative would be to override the media stream from an existing AVCaptureDeviceInput , but since those API's are private and I'd