I have iPhone 11 Pro running iOS 14 beta 2. In one of my projects (and only that project perhaps), the view controller doesn't autorotate when connected to XCode (11 or 12) debugger. When not connected to debugger, there is no issue in autorotation. This happens for only one particular project and it's not clear what could be blocking autorotation. None of the autorotation methods are called. I wonder what could be blocking autorotation. And if I connect any iOS 13 device, autorotation works with the debugger. Is this a known issue with iOS 14/XCode?

Is there a way to get stereo audio on iPhone XS using RemoteIO unit, or any of the CoreAudio APIs? Need to record audio in stereo format.

On iOS 14, when we have AVCaptureSession setup wit AVCaptureVideoDataOutput, AVCaptureAudioDataOutput and also RemoteIO unit configured, AVCaptureSession sometimes takes upto 3-4 seconds to start especially when also changing AVAudioSession category from playback to playAndRecord. Is this because iOS14 is overall slow and buggy in the initial release or something specific to AVFoundation?

I am getting this error in a couple of places in my code with Task closure after setting Swift 6 as Language version in XCode. Passing closure as a 'sending' parameter risks causing data races between code in the current task and concurrent execution of the closure Below is minimally reproducible sample code. import Foundation final class Recorder { var writer = Writer() func startRecording() { Task { await writer.startRecording() print("started recording") } } func stopRecording() { Task { await writer.stopRecording() print("stopped recording") } } } actor Writer { var isRecording = false func startRecording() { isRecording = true } func stopRecording() { isRecording = false } } While making the class Recorder as Actor would fix the problem, I fear I will have to make too many classes as Actors in the class and in my scenario, there could be performance implications where real time audio and video frames are being processed. Further, I don't see any race condition in the code above. Does the error talk about possible race conditions that could arise if I were to call other functions on the self in future, or the current code itself is not safe?

iOS 12 seems to have lot of bugs in AVFoundation code it seems. The latest one seems to be one with AVPlayer:Cannot remove an observer <NSKeyValueObservance 0x280625ce0> for the key path "currentItem.status" from <AVPlayerInternal 0x107626840>, most likely because the value for the key "currentItem" has changed without an appropriate KVO notification being sent. Check the KVO-compliance of the AVPlayerInternal class.'Has anyone come across this?

When using AVCaptureVideoDataOutput/AVCaptureAudioDataOutput & AVAsset writer to record video with cinematic extended video stabilization, the audio lags video upto 1-1.5 seconds and as a result in the video recording, video playback is frozen in the last 1-1.5 seconds. This does not happen when using AVCaptureMovieFileOutput. I want to know if this can be fixed or there is a workaround to synchronize audio/video frames? How does AVCaptureMovieFileOutput handle it?

I have CVPixelBuffer's in kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange, which is 10 bit HDR. I need to convert these to RGB and display in MTKView. I need to know the correct pixel format to use, the BT2020 conversion matrix, and displaying the 10 bit RGB pixel buffer in MTKView.

I am using a RemoteIO unit along with AVCaptureSession to playback samples received from builtin or external microphone. The problem is AVCaptureSession freezes for few seconds in the startup if RemoteIO is simultaneously initialised. I want to know if there is a better and faster way to loopback samples received through AVCaptureAudioDataOutput to headphones? There is one sample code by Apple called AVCaptureToAudioUnit that uses AUGraph but it's pretty old and does not build anymore.