avcapturesession

I'm working on an iOS project which uses AVAssetWriter and AVAssetWriterInput to record audio and video to file. Everything seemed to work fine when the video resolution was limited to 720x1280. I'm now trying to take advantage of the AVCaptureDeviceFormats for higher resolutions available on newer iOS devices. The video continues to work fine using any of the AVCaptureDeviceFormats available on the device. However, the audio does not work. I've tracked this down to the active property of my audio AVCaptureConnection, which is NO for the highest-resolution formats, looking like this when I log

I'm currently working with AVCaptureSession and AVCaptureMetadataOutput . It works perfectly, but I just want to know how to indicate to scan and analyze metadata objects only on a specific region of the AVCaptureVideoPreviewLayer ? Here is a sample of code from a project I have that may help you on the right track // where 'self.session' is previously setup AVCaptureSession // setup metadata capture AVCaptureMetadataOutput *metadataOutput = [[AVCaptureMetadataOutput alloc] init]; [self.session addOutput:metadataOutput]; [metadataOutput setMetadataObjectsDelegate:self queue:dispatch_get_main

There are some discussions on here about similar questions. Like this , but they seem quite outdated, so I thought I'd ask here. I want to get near-realtime RGB pixel values, or even better, a full image RGB histogram from a camera feed in swift 2.0. I want this to be as quick and up to date as possible (~30 fps or higher ideally) Can I get this directly from a AVCaptureVideoPreviewLayer or do I need to capture each frame (async, I assume, if the process takes significant time) then extract pixel values from the jpeg/png render? Some example code, taken from jquave but modified for swift 2.0

I am using AVCaptureMovieFileOutput to record videos and I want to add a UIProgressView to represent how much time there is left before the video stops recording. I set a max duration of 15 seconds: CMTime maxDuration = CMTimeMakeWithSeconds(15, 50); [[self movieFileOutput] setMaxRecordedDuration:maxDuration]; I can't seem to find if AVCaptureMovieFileOutput has a callback for when the video is recording or for when recording begins. My question is, how can I get updates on the progress of the recording? Or if this isn't something that is available, how can I tell when recording begins in

I have a photo taking app that is using AVFoundation . Once an image is captured, I have 2 core graphics methods that I have to run in order to properly rotate and crop the image. When testing this using the typical AVFoundation setup for capturing camera photos with a session preset of AVCaptureSessionPresetPhoto , I was always receiving a ton of memory warnings and I spent 2 weeks trying to solve these and I finally gave up. I ended up ditching the typical captureStillImageAsynchronouslyFromConnection setup and using another setup that just "captures" the video frames. This new method works