Hi there, After upgrading to iOS 18, I noticed that ApplicationMusicPlayer.Queue behavior has broken if at least one song that is added to the queue is also in to the Apple Music Library on the device. The resulting behavior is that the queue does not accept all the items, and only items that are in the Library are playable in the queue. The expected behavior and the previous behavior on iOS 17 was that all the items would be added to the queue successfully. I confirmed this behavior on a separate test device running iOS 17.7. The items added are all being fetched via MusicCatalogResourceRequest<Song> so I would expect that a requested song being present in the library would have no effect.

I have a recent post kind of outlining a similar question here. This time though I'm confident that inserting an array of Track works when inserting into the ApplicationMusicPlayer.shared.queue but now I'm not sure how I can initialize the queue to display song title and artwork for example. I'm also not sure how to get the current item in the queue's artist information and album information which I feel should be easy to do so maybe I'm missing something obvious. Hope this paints of what I'm trying to do and I'm going to post the neccessary code here to help me debug/figure out this problem. import SwiftUI import MusicKit struct PlayBackView: View { @Environment(\.scenePhase) var scenePhase @Environment(\.openURL) private var openURL // Adding Enum Here for Question Sake enum PlayState { case play case pause } @State var song: Track @Binding var songs: [Track]? @State var isShuffled = false @State private var playState: PlayState = .pause @State private var songTimer: Int = Int.random(in: 5...30) @State private var roundTimer: Int = 5 @State private var isTimerActive = false // @State private var volumeValue = VolumeObserver() @State private var isFirstPlay = true @State private var isDancing = false @State private var player = ApplicationMusicPlayer.shared private var isPlaying: Bool { return (player.state.playbackStatus == .playing) } let timer = Timer.publish(every: 1, on: .main, in: .common).autoconnect() var playPauseImage: String { switch playState { case .play: "pause.fill" case .pause: "play.fill" } } var body: some View { VStack { // Album Cover HStack(spacing: 20) { if let artwork = player.queue.currentEntry?.artwork { ArtworkImage(artwork, height: 100) } else { Image(systemName: "music.note") .resizable() .frame(width: 100, height: 100) } VStack(alignment: .leading) { /* This is where I want to display song title, album title, and artist name for example */ // Song Title Text(player.queue.currentEntry?.title ?? "Unable to Find Song Title") .font(.title) .fixedSize(horizontal: false, vertical: true) // Album Title // Text(player.queue.currentEntry ?? "Album Title Not Found") // .font(.caption) // .fixedSize(horizontal: false, vertical: true) // I don't know what the subtitle actually grabs Text(player.queue.currentEntry?.subtitle ?? "Artist Name Not Found") .font(.caption) } } .padding() // Play/Pause Button Button(action: { handlePlayButton() isFirstPlay = false }, label: { Text(playState == .play ? "Pause" : isFirstPlay ? "Play" : "Resume") .frame(maxWidth: .infinity) }) .buttonStyle(.borderedProminent) .padding() .font(.largeTitle) .tint(.red) } .padding() // Maybe I should use the `.task` modifier here? .onAppear { // I'm sure this code could be improved but don't think it'll help answer the question at the moment. Task { if let songs = songs { do { if isShuffled { let shuffledSongs = songs.shuffled() try await player.queue.insert(shuffledSongs, position: .tail) handlePlayButton() } else { try await player.queue.insert(songs, position: .tail) } } catch { print(error.localizedDescription) } } } } } private func handlePlayButton() { Task { if isPlaying { player.pause() playState = .pause isTimerActive = false } else { playState = .play await playTrack() isTimerActive = true } } } @MainActor private func playTrack() async { do { try await player.play() } catch { print(error.localizedDescription) } } } //#Preview { // PlayBackView() //}

Hello, I am a deaf-blind wheelchair user, and I program in Swift using a braille display. I’m reaching out for your help on an issue I’ve been struggling to solve. Basically, when I extract a CMSampleBuffer from an AVAsset of a video, it comes with the Audio Format ID as Linear PCM. However, when I try to pass this CMSampleBuffer to write another video using AVAssetWriter, the video ends up muted. The audio settings of the output video are configured to MPEG-4 AAC, but the input CMSampleBuffer has the Audio Format ID as Linear PCM. I would like to request an extension for CMSampleBuffer that converts Linear PCM audio to MPEG-4 AAC. I’ve searched extensively and couldn’t find anything. Looking forward to your help. Thank you.

Is anyone experiencing an issue with initial ‘AVAudioSession.sharedInstance().outputVolume’ returning 0 after updating to iOS 18.0? I’m observing the outputVolume of AVAudioSession, and when I adjust the device volume, the change value returns correctly. However, when I call AVAudioSession.sharedInstance().outputVolume to get the current volume before knowing the change value, it returns 0, even though the device volume is not actually 0.

Hi all, we are working on iOS application that includes the camera functionality. This week we have received a few customer complaints regarding the camera usage with iPhone 16/16 Pro, both of the customers said that they have an issue with the camera preview(when the camera is open) the camera preview is just freezer but any other functionally and UI works as expected. Moreover the issue happens only for back camera, the front camera works perfectly. We have tested it in context of iOS 18 with iPhone 14/15/15 Pro/15 Pro Max but all devices with iOS 18 works perfectly without any issues. So we assumed there was no issues with iOS 18 but some breaking changes with the new iPhone 16/16 pro cameras were introduced that caused this effect. Unfortunatly, currently we can't test directly usign the iPhone 16/16 Pro since we have't these devices. We are using SwiftUI framework and here the implementation of the camera preview: VideoPreviewLayer final class CameraPreviewView: UIView { var previewLayer: AVCaptureVideoPreviewLayer { guard let layer = layer as? AVCaptureVideoPreviewLayer else { fatalError("Layer expected is of type VideoPreviewLayer") } return layer } var session: AVCaptureSession? { get { return previewLayer.session } set { previewLayer.session = newValue } } override class var layerClass: AnyClass { AVCaptureVideoPreviewLayer.self } } UIKit -> SwiftUI struct CameraRecordingView: UIViewRepresentable { @ObservedObject var cameraManager: CameraManager func makeUIView(context: Context) -> CameraPreviewView { let previewView = CameraPreviewView() previewView.session = cameraManager.session /// AVCaptureSession previewView.previewLayer.videoGravity = .resizeAspectFill return previewView } func updateUIView(_ uiView: CameraPreviewView, context: Context) { } } Setup camera input private func saveInput(input: AVCaptureDevice) { /// Where input is AVCaptureDevice.default(.builtInWideAngleCamera, for: .video, position: .back) do { let cameraInput = try AVCaptureDeviceInput(device: input) if session.canAddInput(cameraInput) { session.addInput(cameraInput) /// session is AVCaptureSession } else { sendError(error: .cannotAddInput) status = .failed } } catch { if error.nsError.code == -11852 { sendError(error: .microphoneError) } else { sendError(error: .createCaptureInput(error)) } status = .failed } } Does anybody have similar issues with iPhone 16/16 Pro? We would appreciate any ideas of how to potentially resolve the issue.

I create an audiounit with AudioComponentInstanceNew with componentType = kAudioUnitType_FormatConverter and componentSubType = kAudioUnitSubType_NewTimePitch and connect it between input and output, it works well before iOS18. However, it doesn't work with iOS 18. The call of AudioUnitRender for mic return -10863 in iOS 18. Are there anything I missed?

Does anyone else’s came not work properly I can only do selfies since the update to iOS 18 as it’s blacked out the main camera

If I have bluetooth speaker connected and I have installTap called on input Node, the callback is fired for 1-2 seconds then it doesnt anymore. I dont see any route or any notification handler called in between. engine.inputNode.removeTap(onBus: 0) engine.inputNode.installTap( onBus: 0, bufferSize: 4096, format: format ) { buffer, _ in // 3 guard let channelData = buffer.floatChannelData else { return } // This callback fails after some time. } Not sure if this is expected, but I noticed some other applications, they seem to work fine. If I remove bluetooth device, my input works fine. Also I have no issues with output on Speaker.

I am looking to learn more about the new Capture Button controls for iPhone 16, and am working to adapt the AVCam Sample Code to support the Capture Button. While I believe I've followed the guidance in the Enhancing your app experience with the Camera Control documentation, I'm finding that while my AVCaptureControl items seem to be added to the capture session, the Capture Button does not ever do anything, nor are any of the delegate methods called. After I configure my capture session per the setupSession() method, I'm calling a method I added, func configureCameraControls(device:AVCaptureDevice): func configureCameraControls(device: AVCaptureDevice) { guard captureSession.supportsControls else { assertionFailure("App does not support camera control.") return } // Set the controls delegate captureSession.setControlsDelegate(controlsDelegate, queue: sessionQueue) // Begin configuring the capture session. captureSession.beginConfiguration() // Remove previously configured controls, if any. for control in captureSession.controls { captureSession.removeControl(control) } // Add a zoom control let systemZoomSlider = AVCaptureSystemZoomSlider(device: device) { zoomFactor in // TODO } // Create a control to adjust the device's exposure bias. let systemBiasSlider = AVCaptureSystemExposureBiasSlider(device: device) // Add a custom slider let focusSlider = AVCaptureSlider("Focus", symbolName: "scope", in: 0...1) focusSlider.setActionQueue(sessionQueue) { focusValue in // TODO } // Iterate over the passed in controls. for control in [systemZoomSlider, systemBiasSlider, focusSlider] { // Add the control to the capture session if possible. if captureSession.canAddControl(control) { captureSession.addControl(control) } else { print("Unable to add control \(control).") } } // Commit the capture session configuration. captureSession.commitConfiguration() } I define the controls delegate like so: final class CaptureControlsDelegate: NSObject, AVCaptureSessionControlsDelegate { func sessionControlsDidBecomeActive(_ session: AVCaptureSession) { } func sessionControlsWillEnterFullscreenAppearance(_ session: AVCaptureSession) { } func sessionControlsWillExitFullscreenAppearance(_ session: AVCaptureSession) { } func sessionControlsDidBecomeInactive(_ session: AVCaptureSession) { } } Which I instantiate earlier on in my app's lifecycle and make available to the CaptureService actor. I'm not sure if this snippet can provide enough detail to gather some help, but I can't quite fathom why the camera/capture pipeline works, but I'm not getting any functionality from the Capture Button nor is the AVCaptureSessionControlsDelegate ever having its methods called.

Hello, I noticed that SFSpeechRecognizer is broken on iOS 18. During a recognition task, it keeps dropping the recognized text on every pause. For example, if you say "how are you fine", it will drop the "how are you" part and only give you "fine" as the result. Say "how are you <pause> fine" // iOS 17 ✅ (perfect final result) How How are How are you How are you. How are you. Fine. // iOS 18 ❌ How How are How are you How are you Fine (the text before the pause is dropped, and fail to recognize the punctuations.) Reproducing the issue: Download the official sample project. Run it on an iOS 18 device or simulator. Say "how are you fine" Only "fine" will be displayed.

After updating to 18.1 beta 5, the spatial video option no longer exists in settings, and the icon for capturing spatial video also disappears in camera app. Device model, iPhone 15 Pro

Dear Apple Support, I’ve noticed an issue with the Messages app on iOS 18. When I try to send Live Photos, I select the Live Photo icon, but the photo is sent as a still image instead. Despite following the correct steps, the Live Photo feature doesn’t seem to be working properly. I would appreciate it if your team could look into this and resolve the issue in an upcoming update. Thank you for your support and continued innovation! Best regards, Erfan Nateghie

I had this situation recently where suddenly with the new Beta update the sound of my airpods pro 2 was all gltichy and spatial audio didn’t work at all. I've already check my airpods with other devices and they're completely fine. Hope this helps!

AVAudioEngine and AVAudioSession Welcome! I will start off with the terms AVAudioEngineImpl::Initialize(NSError**). Why? I want to make those who run into this issue have to possibility to find this post through Search Engines! This is short small breakdown based on what I observed while trying to use these two Components. It's not a guide that goes into all the details. If you're trying to figure out how to fix a crash, you may can find a common way to fix it, in this post! Is it possible to use AVAudioEngine and AVAudioSession together? The answer is yes. But you will face challenges regarding it. Mostly AVAudioEngine. Whatever you're trying to do, it will take a lot of testing. I don't know how it will be with an IDE. But with just .app and iPhone it will take some testing. Or a lot of testing. Something that helped me fixing a crash was, this here: https://developer.apple.com/documentation/avfaudio/audio_engine/audio_units/using_voice_processing This example Project by Apple, uses both AVAudioEngine and AVAudioSession. How can I fix AVAudioEngineImpl::Initialize(NSError**) ? I think this depends. If you're lucky and have a crash log, you may can find clues, but the stack trace sometimes doesn't really help either. I will mention common cases that I encountered though. inputNode https://developer.apple.com/documentation/avfaudio/avaudioengine/1386063-inputnode You need an inputNode apparently. You need to access it or else I think there won't be one. And if there isn't one, AVAudioEngine.start will most likely crash. The audio engine creates a singleton on demand when first accessing this variable. Doing this has prevented this common issue for me. .prepare deallocates and can cause a crash if you restart your AudioEngine Another issue I faced was handling .prepare wrong. You don't need .prepare. But if you use installTap or other things, I think you need it. Here is a common thing to note. If you had previous initialized inputNode. Those could be gone after using .prepare. You have to ensure you're accessing AVAudioEngine.inputNode again before calling .start() or whatever node you need. The Voice Processing Project, does this by creating a Managing Controller for AVAudioEngine with a sort of "setup" function, which ensures that everything is ready, before .prepare and .start get called. AVAudioSession's setCategory You have to experiment with it. The crashes can be very weird. Sometimes your App will only crash once, and then only after you install it again, or if you start it up. You are actually able to use .setActive and .setCategory with AVAduioEngine. Just do not try to do .setActive(false) before you've stopped the AudioEngine, as it will fail. Sometimes I'd run into an issue with .setActive(true) so you really have to experiment if leaving that part out resolves the issue or not. try session.setCategory(.multiRoute, mode: .default, options: [.defaultToSpeaker, .mixWithOthers]) Experiment with it. But these .multiRoute and .mixWithOthers have allowed me to use AVAudioEngine to make a test recording. And I can even switch the Data Sources and Polar Patterns without any issues. Sometimes you can get away without setting .setActive at all. Not sure if AVAudioEngine does it automatically. Short Summary If you use .prepare and then .stop, make sure to initialize things like .inputNode before calling .prepare and .start again. (THIS CAN BE DIFFERENT) Only call .setActive(false) after you used .stop. Otherwise I believe it has no chance to stop it. AVAudioSession setCategory is important. Ensure you use mixRoutes or experiment with all the modes. If you manage to solve your crash, you'll be able to indeed change the Data Sources and Polar Patterns and more! Use isRunning before using .start, this will save you from another crash. If you use .start while it's already running, I think try and catch won't save you here, you have to ensure you're not starting it twice. I hope that this short breakdown will help you to resolve your crash. If you get deeper into AVAudioEngine and AVAudioSession, you'll probably face more crashes. I yet, need to figure out how to solve them. I have a lot of trouble to put my Testing App on my iPhone, so I am sorry if this guide didn't cover every detail of it. A HUGE tip from me is to check the Documentations. As example, when I read the Documentation for inputNode I learned why my app crashed, it's because I never accessed and initialized one. The Developer Documentation can be a little bit of a laberynth, and I strongly recommend you to read every property you try to access if you believe they cause issues. And I also recommend to find example Projects like the Voice Processing ones. As there aren't any Code Examples in the Documentation.

I have an app that lets the user draw a circle or line over a live video feed. There’s a view for circles and a view for lines. These are displayed in ContentView and their position in the ZStack is altered based on the toolbar section by the user. Whichever view is on top of the stack is active and usable. That all works fine but I want the user to be able to select any shape on screen whether it is a circle or line. My question is what is best practice to manage tool selection and drawing the shapes? I’m guessing I should draw all shapes onto one view but I would like to avoid this as I have all my logic in each shapes respective view.

I use AVPlayer to play HLS video successfully on macOS Sonoma, but I encountered this error on macOS Sequoia. Please help me: Error Domain=AVFoundationErrorDomain Code=-11833 ‘Cannot Decode’ UserInfo={NSUnderlyingError=0x600001e57330 {Error Domain=CoreMediaErrorDomain Code=-12906 ‘(null)’}, NSLocalizedFailureReason=The decoder required for this media cannot be found., AVErrorMediaTypeKey=vide, NSLocalizedDescription=Cannot Decode} Thanks!

When my CarPlay connects and tries to play music it plays it through the vehicles phone speakers. If I make a phone call and then hang up it pushes the sound back to the vehicles stereo speakers. Does anyone have a fix for this because this is very annoying. Sometimes it will just switch to the phone speakers and I have to complete the process again.

I am working on an image processing app that requires 8 bit per channel (bpc) images. Sometimes, input images are 16 bpc (e.g. sRGB IEC61966-2.1; extended range) The app already draws the input image in a CGContext producing an 8 bpc CGImage. This works fine if the input is 16 bpc and I get an 8 bpc image. I am wondering if it would be better for image quality to convert the 16 bpc images to 8 bpc using Accelerate before that CGContext draw? or does that draw essentially do the equivalent?

How can I obtain the invoice order id on the user's purchase order？For example, "MT2345678"

We have a VOIP calling application that releases resources at the end of call. When the AudioOutputUnitStop API is invoked, it takes upto 700millisecond to return back sometimes. If we comment that API call as a test then the AudioUnitUninitialize API takes upto 700ms. Once the cleanup is done, as part of the call flow, the application invokes a BYE SIP message. Hence in cases where the API takes more than 200 ms, the Bye message is sent with that much delay and gets blocked as per the server DDOS settings. (DDOS timer will start as soon as a the UDP socket is disconnected with the client and will timeout within 200 ms and Bye request coming post that time will get blocked) We need to understand why there is a delay of more than 200ms observed sometimes while in other cases it requires less than 50ms?