avcapturesession

I am having difficult times, for something which I think ought to be simple. I just want to light the flash when taking a picture in my iOS app. And all I tried failed or works only 20 percent. Here is the code fired to light the flash up: // Here we have: captureDevice.hasFlash && captureDevice.isFlashModeSupported(.On) do {try captureDevice.lockForConfiguration() captureDevice.flashMode = .On captureDevice.unlockForConfiguration() } catch let error as NSError { print("captureDevice.lockForConfiguration FAILED") print(error.code) } I have tried several flavors of the code, by moving the 2

The simpler way to record a video on iOS is by setting a AVCaptureSession.sessionPreset . But that doesn't work for me since I want to control parameters like binning, stabilization (cinematic, standard, or none) and ISO. I find the format I want and assign it to activeFormat , but when I try to start recording, I get an error: Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[AVCaptureMovieFileOutput startRecordingToOutputFileURL:recordingDelegate:] No active/enabled connections' Here is my initialisation code: let device = AVCaptureDevice.defaultDevice(

I have a view controller which allows a user to take a picture. I am setting the avcapture bounds to be the bounds of a view on screen. Above this view I have a collection view. So users can capture multiple pictures, they are then added to the collection view above. I am having trouble with the correct orientation appearing in my preview above. Code is as follows: @IBOutlet weak var imagePreviews: UICollectionView! @IBOutlet weak var imgPreview: UIView! var session: AVCaptureSession? var stillImageOutput: AVCaptureStillImageOutput? var videoPreviewLayer: AVCaptureVideoPreviewLayer? var images

I am trying to record video also in background but currently my code is recording video in foreground when the app goes background the method. -(void)captureOutput:(AVCaptureFileOutput *)captureOutput didFinishRecordingToOutputFileAtURL:(NSURL *)outputFileURL fromConnections:(NSArray *)connections error:(NSError *)error fires immediately with error as error:Error Domain=AVFoundationErrorDomain Code=-11818 "Recording Stopped" UserInfo=0x176aa180 {NSLocalizedRecoverySuggestion=Stop any other actions using the recording device and try again., NSUnderlyingError=0x1766c0e0 "The operation couldn’t

I am making a simple pipeline that gets images from AVCaptureSession, processes them in OpenCV, and then renders them in OpenGL. It is based on RosyWriter but without the audio and recording capabilities. The OpenCV processing looks like - (void)processPixelBuffer: (CVImageBufferRef)pixelBuffer { CVPixelBufferLockBaseAddress( pixelBuffer, 0 ); int bufferWidth = CVPixelBufferGetWidth(pixelBuffer); int bufferHeight = CVPixelBufferGetHeight(pixelBuffer); unsigned char *pixel = (unsigned char *)CVPixelBufferGetBaseAddress(pixelBuffer); cv::Mat image = cv::Mat(bufferWidth,bufferHeight,CV_8UC4,pixel

I'm making a video capturing iOS app and I want to be able to record audio from the microphone while allowing background music to play. I can do all of this but the background audio skips (pauses briefly) whenever the view with the camera enters and exits the foreground. I have isolated the bug to AVCaptureSession addInput : AVCaptureSession session = [[AVCaptureSession alloc] init]; session.automaticallyConfiguresApplicationAudioSession = NO; AVCaptureDevice *audioDevice = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeAudio]; AVCaptureDeviceInput *audioDeviceInput =

I am using AVCapture to capture video and save it. But I need to provide zooming option like pinch to zoom or through a zoom button. Also video should be saved in exactly in same manner in which it is being displayed, I mean when zoomed in, it should be saved zoomed. Any help, Link is appreciated. My code for setting up AVCapture session is: - (void)setupAVCapture{ session = [[AVCaptureSession alloc] init]; session.automaticallyConfiguresApplicationAudioSession=YES; [session beginConfiguration]; session.sessionPreset = AVCaptureSessionPresetMedium; AVCaptureVideoPreviewLayer