We are getting this error on iOS 16.1 beta 5 that we never saw before in any of the iOS versions. [as_client]     AVAudioSession_iOS.mm:2374  Failed to set category, error: 'what' I wonder if there is any known workaround for the same. iOS 16 has been a nightmare and lot of AVFoundation code breaks or becomes unpredictable in behaviour. This is a new issue added in iOS 16.1.

I keep getting repeated logs on iOS 16.1: [client] 114 CDPurgeableResultCache _recentPurgeableTotals no result for /private/var/wireless/baseband_data, setting to zero The logs fill the console and it's difficult to find useful logs that are there in my code. What can be done to disable these logs?

I see 24 hours report completely broken and unreliable in AppStoreConnect Sales & Trends for more than a month. When I submit a complain, all they say is clear cookies and caches and restart the browser. Either the complain is not forwarded to engineering or engineering is not acknowledging the issue.

I have an AVAssetWriter and I do set audio compression settings dictionary using canApply(outputSettings: audioCompressionSettings, forMediaType: .audio) API. One of the fields in the compression settings is setting an audio sample rate using AVSampleRateKey. My question is if the sample rate I set in this key is different from sample rate of audio sample buffers that are appended, can this cause audio to drift away from video? Is setting arbitrary sample rate in asset writer settings not recommended?

I have an XCode project that has multiple targets. In one of the targets, I want to add Apple Watch support (not in other targets). How do I do that?

I got approval for User Assigned Device Name but now am stuck how to import this capability in XCode? I successfully updated my AppId in membership portal to reflect this permission, but I can't find anything in XCode to import this. I opened Editor -> Add Capability but there is no option to add User Assigned Device Name in the list! User Assigned Device Name

I have the following code to determine ProRes and HDR support on iOS devices. extension AVCaptureDevice.Format {     var supports10bitHDR:Bool {         let mediaType = CMFormatDescriptionGetMediaType(formatDescription)         let mediaSubtype = CMFormatDescriptionGetMediaSubType(formatDescription)         return mediaType == kCMMediaType_Video && mediaSubtype == kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange     }     var supportsProRes422:Bool {         let mediaType = CMFormatDescriptionGetMediaType(formatDescription)         let mediaSubtype = CMFormatDescriptionGetMediaSubType(formatDescription)         return (mediaType == kCMMediaType_Video && (mediaSubtype == kCVPixelFormatType_422YpCbCr10BiPlanarVideoRange))     } } On iPad Pro M2, supportsProRes422 returns false for all device formats (for wide angle camera). Is it a bug or intentional?

I have the following code to connect inputNode to mainMixerNode of AVAudioEngine: public func setupAudioEngine() { self.engine = AVAudioEngine() let format = engine.inputNode.inputFormat(forBus: 0) //main mixer node is connected to output node by default engine.connect(self.engine.inputNode, to: self.engine.mainMixerNode, format: format) do { engine.prepare() try self.engine.start() } catch { print("error couldn't start engine") } engineRunning = true } But I am seeing a crash in Crashlytics dashboard (which I can't reproduce). Fatal Exception: com.apple.coreaudio.avfaudio required condition is false: IsFormatSampleRateAndChannelCountValid(format) Before calling the function setupAudioEngine I make sure the AVAudioSession category is not playback where mic is not available. The function is called where audio route change notification is handled and I check this condition specifically. Can someone tell me what I am doing wrong? Fatal Exception: com.apple.coreaudio.avfaudio 0 CoreFoundation 0x99288 __exceptionPreprocess 1 libobjc.A.dylib 0x16744 objc_exception_throw 2 CoreFoundation 0x17048c -[NSException initWithCoder:] 3 AVFAudio 0x9f64 AVAE_RaiseException(NSString*, ...) 4 AVFAudio 0x55738 AVAudioEngineGraph::_Connect(AVAudioNodeImplBase*, AVAudioNodeImplBase*, unsigned int, unsigned int, AVAudioFormat*) 5 AVFAudio 0x5cce0 AVAudioEngineGraph::Connect(AVAudioNode*, AVAudioNode*, unsigned long, unsigned long, AVAudioFormat*) 6 AVFAudio 0xdf1a8 AVAudioEngineImpl::Connect(AVAudioNode*, AVAudioNode*, unsigned long, unsigned long, AVAudioFormat*) 7 AVFAudio 0xe0fc8 -[AVAudioEngine connect:to:format:] 8 MyApp 0xa6af8 setupAudioEngine + 701 (MicrophoneOutput.swift:701) 9 MyApp 0xa46f0 handleRouteChange + 378 (MicrophoneOutput.swift:378) 10 MyApp 0xa4f50 @objc MicrophoneOutput.handleRouteChange(note:) 11 CoreFoundation 0x2a834 __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ 12 CoreFoundation 0xc6fd4 ___CFXRegistrationPost_block_invoke 13 CoreFoundation 0x9a1d0 _CFXRegistrationPost 14 CoreFoundation 0x408ac _CFXNotificationPost 15 Foundation 0x1b754 -[NSNotificationCenter postNotificationName:object:userInfo:] 16 AudioSession 0x56f0 (anonymous namespace)::HandleRouteChange(AVAudioSession*, NSDictionary*) 17 AudioSession 0x5cbc invocation function for block in avfaudio::AVAudioSessionPropertyListener(void*, unsigned int, unsigned int, void const*) 18 libdispatch.dylib 0x1e6c _dispatch_call_block_and_release 19 libdispatch.dylib 0x3a30 _dispatch_client_callout 20 libdispatch.dylib 0x11f48 _dispatch_main_queue_drain 21 libdispatch.dylib 0x11b98 _dispatch_main_queue_callback_4CF 22 CoreFoundation 0x51800 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ 23 CoreFoundation 0xb704 __CFRunLoopRun 24 CoreFoundation 0x1ebc8 CFRunLoopRunSpecific 25 GraphicsServices 0x1374 GSEventRunModal 26 UIKitCore 0x514648 -[UIApplication _run] 27 UIKitCore 0x295d90 UIApplicationMain 28 libswiftUIKit.dylib 0x30ecc UIApplicationMain(_:_:_:_:) 29 MyApp 0xc358 main (WhiteBalanceUI.swift) 30 ??? 0x104b1dce4 (Missing)

I am getting CMSampleBuffers in kCVPixelFormatType_422YpCbCr10BiPlanarVideoRange format from the camera. The pixel buffers are 10 bit HDR. I need to record using ProRes422 codec but in non-HDR format. I am not sure what is a reliable way of doing this so reaching out here. What I did is simply set AVAssetWriter compression dictionary as follows: compressionSettings[AVVideoTransferFunctionKey] = AVVideoTransferFunction_ITU_R_709_2 compressionSettings[AVVideoColorPrimariesKey] = AVVideoColorPrimaries_ITU_R_709_2 compressionSettings[AVVideoYCbCrMatrixKey] = AVVideoYCbCrMatrix_ITU_R_709_2 It works and the end video recording shows the color space to be HD 1-1-1 with Apple ProRes codec. But I am not sure if AVAssetWriter has actually performed colorspace conversion from HDR 10 to BT.709, or simply clipped the colors out of range. I need to know a definitive way to achieve this. I see Apple's native camera app is doing this, but not sure how.

I understand the CVBufferSetAttachment simply appends metadata attachment to the sample buffer in a dictionary. But I see there are no errors in appending metadata that is contradictory in nature. For instance, for the sample buffers received from camera in HDR mode which are in YUV422 10 bit biplanar format, both the following succeed: CVBufferSetAttachment(testPixelBuffer!, kCVImageBufferColorPrimariesKey, kCVImageBufferColorPrimaries_ITU_R_2020, .shouldPropagate) CVBufferSetAttachment(testPixelBuffer!, kCVImageBufferTransferFunctionKey, kCVImageBufferTransferFunction_ITU_R_2100_HLG, .shouldPropagate) CVBufferSetAttachment(testPixelBuffer!, kCVImageBufferYCbCrMatrixKey, kCVImageBufferYCbCrMatrix_ITU_R_2020, .shouldPropagate) Or CVBufferSetAttachment(testPixelBuffer!, kCVImageBufferColorPrimariesKey, kCVImageBufferColorPrimaries_ITU_R_709_2, .shouldPropagate) CVBufferSetAttachment(testPixelBuffer!, kCVImageBufferTransferFunctionKey, kCVImageBufferTransferFunction_ITU_R_709_2, .shouldPropagate) CVBufferSetAttachment(testPixelBuffer!, kCVImageBufferYCbCrMatrixKey, kCVImageBufferYCbCrMatrix_ITU_R_709_2, .shouldPropagate) So one could set the color primaries and transfer function to be BT.709 format for sample buffers that are in 10 bit HDR. I see no errors when either sample buffer is appended to AVAssetWriter. I am wondering how attachments actually work and how AVFoundation resolves the contradictions?

I have tried everything but it looks to be impossible to get MTKView to display full range of colors of HDR CIImage made from CVPixelBuffer (in 10bit YUV format). Only builtin layers such as AVCaptureVideoPreviewLayer, AVPlayerLayer, AVSampleBufferDisplayLayer are able to fully display HDR images on iOS. Is MTKView incapable of displaying full BT2020_HLG color range? Why does MTKView clip colors no matter even if I set pixel Color format to bgra10_xr or bgra10_xr_srgb?  convenience init(frame: CGRect, contentScale:CGFloat) {         self.init(frame: frame)         contentScaleFactor = contentScale     }     convenience init(frame: CGRect) {         let device = MetalCamera.metalDevice         self.init(frame: frame, device: device)         colorPixelFormat = .bgra10_xr         self.preferredFramesPerSecond = 30     }     override init(frame frameRect: CGRect, device: MTLDevice?) {         guard let device = device else {             fatalError("Can't use Metal")         }         guard let cmdQueue = device.makeCommandQueue(maxCommandBufferCount: 5) else {             fatalError("Can't make Command Queue")         }         commandQueue = cmdQueue         context = CIContext(mtlDevice: device, options: [CIContextOption.cacheIntermediates: false])         super.init(frame: frameRect, device: device)         self.framebufferOnly = false         self.clearColor = MTLClearColor(red: 0, green: 0, blue: 0, alpha: 0)     } And then rendering code:  override func draw(_ rect: CGRect) {         guard let image = self.image else {             return         }         let dRect = self.bounds         let drawImage: CIImage         let targetSize = dRect.size         let imageSize = image.extent.size         let scalingFactor = min(targetSize.width/imageSize.width, targetSize.height/imageSize.height)         let scalingTransform = CGAffineTransform(scaleX: scalingFactor, y: scalingFactor)         let translation:CGPoint = CGPoint(x: (targetSize.width - imageSize.width * scalingFactor)/2 , y: (targetSize.height - imageSize.height * scalingFactor)/2)         let translationTransform = CGAffineTransform(translationX: translation.x, y: translation.y)         let scalingTranslationTransform = scalingTransform.concatenating(translationTransform)        drawImage = image.transformed(by: scalingTranslationTransform)         let commandBuffer = commandQueue.makeCommandBufferWithUnretainedReferences()         guard let texture = self.currentDrawable?.texture else {             return         }         var colorSpace:CGColorSpace                 if #available(iOS 14.0, *) {             colorSpace = CGColorSpace(name: CGColorSpace.itur_2100_HLG)!         } else {             // Fallback on earlier versions             colorSpace = drawImage.colorSpace ?? CGColorSpaceCreateDeviceRGB()         }         NSLog("Image \(colorSpace.name), \(image.colorSpace?.name)")         context.render(drawImage, to: texture, commandBuffer: commandBuffer, bounds: dRect, colorSpace: colorSpace)         commandBuffer?.present(self.currentDrawable!, afterMinimumDuration: 1.0/Double(self.preferredFramesPerSecond))         commandBuffer?.commit()     }

Dear AVKit Engineers, I see a strange bug in AVKit. Even after the viewcontroller hosting AVPlayerViewController is dismissed, I see CPU spiking to over 100% which is caused by some animation code still running after AVPlayerViewController no more exists ([AVMobileChromelessControlsViewController__animateSliderToTintState:duration:completionHandler:]). How does this code continue to run even after AVPlayerViewController is no more? And what can I do to fix it?

I am planning to convert a paid app to freemium. I would like existing paid users to remain unaffected in this process. In this question, I am focussing on volume purchase users (both existing and future). The info on Apple developer website advises to use original Store Kit if one needs to support Volume Purchase users: You may need to use the Original API for in-app purchase for the following features, if your app supports them: The Volume Purchase Program (VPP). For more information, see Device Management. Does that mean I can't use StoreKit2 to verify receipts of volume purchases made before the app went freemium (to get original purchase version and date), OR, the API can not be used to make in-app volume purchases and perhaps, users will not be able to make volume purchases from AppStore, OR, both?

I see these errors when presenting UIActivityViewController with a video file. [ShareSheet] Failed to request default share mode for fileURL:file:///var/mobile/Containers/Data/Application/B0EB55D3-4BF1-430A-92D8-2231AFFD9499/Documents/IMG-0155.mov error:Error Domain=NSOSStatusErrorDomain Code=-10814 "(null)" UserInfo={_LSLine=1538, _LSFunction=runEvaluator} I don't understand if I am doing something wrong and what the error means. The share sheet shows anyways.

I noticed on iOS 17 that calling AppTransaction.shared fails with following errors. Here is the code: let result: VerificationResult<AppTransaction> = try await AppTransaction.shared NSLog("Result \(result)") It does not hit the NSLog statement and instead throws the following error logs. Error getting app transaction: Error Domain=ASDErrorDomain Code=500 "(null)" UserInfo={NSUnderlyingError=0x281815050 {Error Domain=AMSErrorDomain Code=301 "Invalid Status Code" UserInfo={NSLocalizedDescription=Invalid Status Code, AMSURL=https://mzstorekit-sb.itunes.apple.com/inApps/v1/receipts/createAppReceipt?REDACTED, AMSStatusCode=401, AMSServerPayload={ errorCode = 500317; }, NSLocalizedFailureReason=The response has an invalid status code}}} Received error that does not have a corresponding StoreKit Error: Error Domain=AMSErrorDomain Code=301 "Invalid Status Code" UserInfo= {NSLocalizedDescription=Invalid Status Code, AMSURL=https://mzstorekit- sb.itunes.apple.com/inApps/v1/receipts/createAppReceipt?REDACTED, AMSStatusCode=401, AMSServerPayload={ errorCode = 500317; }, NSLocalizedFailureReason=The response has an invalid status code} Received error that does not have a corresponding StoreKit Error: Error Domain=ASDErrorDomain Code=500 "(null)" UserInfo=.{NSUnderlyingError=0x281815050 {Error Domain=AMSErrorDomain Code=301 "Invalid Status Code" UserInfo={NSLocalizedDescription=Invalid Status Code, AMSURL=https://mzstorekit-sb.itunes.apple.com/inApps/v1/receipts/createAppReceipt?REDACTED, AMSStatusCode=401, AMSServerPayload={ errorCode = 500317; }, NSLocalizedFailureReason=The response has an invalid status code}}}