Hi, I am in need to get the total number of parquet files that are present in the apple music feed api for songs, artists. As there is option for limit and offset. But limit is limited to 200 records and offset is uncertain. How to get total number of parquet files number without quering apple music feed api mulitple times? Need help regarding this. Thanks!

When is playbackBufferEmpty triggered? Why is this property YES observed from the observer method when returning to the foreground from the background even if the buffer is not empty?

I am attempting to do batch Transcription of audio files exported from Voice Memos, and I am running into an interesting issue. If I only transcribe a single file it works every time, but if I try to batch it, only the last one works, and the others fail with No speech detected. I assumed it must be something about concurrency, so I implemented what I think should remove any chance of transcriptions running in parallel. And with a mocked up unit of work, everything looked good. So I added the transcription back in, and 1: It still fails on all but the last file. This happens if I am processing 10 files or just 2. 2: It no longer processes in order, any file can be the last one that succeeds. And it seems to not be related to file size. I have had paragraph sized notes finish last, but also a single short sentence that finishes last. I left the mocked processFiles() for reference. Any insights would be greatly appreciated. import Speech import SwiftUI struct ContentView: View { @State private var processing: Bool = false @State private var fileNumber: String? @State private var fileName: String? @State private var files: [URL] = [] let locale = Locale(identifier: "en-US") let recognizer: SFSpeechRecognizer? init() { self.recognizer = SFSpeechRecognizer(locale: self.locale) } var body: some View { VStack { if files.count > 0 { ZStack { ProgressView() Text(fileNumber ?? "-") .bold() } Text(fileName ?? "-") } else { Image(systemName: "folder.badge.minus") Text("No audio files found") } } .onAppear { files = getFiles() Task { await processFiles() } } } private func getFiles() -> [URL] { do { let documentsURL = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first! let path = documentsURL.appendingPathComponent("Voice Memos").absoluteURL let contents = try FileManager.default.contentsOfDirectory(at: path, includingPropertiesForKeys: nil, options: []) let files = (contents.filter {$0.pathExtension == "m4a"}).sorted { url1, url2 in url1.path < url2.path } return files } catch { print(error.localizedDescription) return [] } } private func processFiles() async { var fileCount = files.count for file in files { fileNumber = String(fileCount) fileName = file.lastPathComponent await processFile(file) fileCount -= 1 } } // private func processFile(_ url: URL) async { // let seconds = Double.random(in: 2.0...10.0) // await withCheckedContinuation { continuation in // DispatchQueue.main.asyncAfter(deadline: .now() + seconds) { // continuation.resume() // print("\(url.lastPathComponent) \(seconds)") // } // } // } private func processFile(_ url: URL) async { let recognitionRequest = SFSpeechURLRecognitionRequest(url: url) recognitionRequest.requiresOnDeviceRecognition = false recognitionRequest.shouldReportPartialResults = false await withCheckedContinuation { continuation in recognizer?.recognitionTask(with: recognitionRequest) { (transcriptionResult, error) in guard transcriptionResult != nil else { print("\(url.lastPathComponent.uppercased())") print(error?.localizedDescription ?? "") return } if ((transcriptionResult?.isFinal) == true) { if let finalText: String = transcriptionResult?.bestTranscription.formattedString { print("\(url.lastPathComponent.uppercased())") print(finalText) } } } continuation.resume() } } }

When I set a custom exposure duration, like 1/8, and then switch back to continuous auto exposure, the exposure duration in areas that were previously 1/17 changes to something like 1/5 or 1/10. As a result, the screen becomes laggy and overexposed. I'm not sure why this is happening.

iOS (Official) Photos app can display some EXIF-related metadata (e.g. camera and lens info, ISO, shutter speed, F-number) even when photos are offloaded to iCloud and the device is not connected to internet (e.g. airplane mode). However, with the Photos.framework, we need to download photos to retrive those metadata (which means it will not work with airplane mode). I tried the following methods, but none of those worked when photos were offloaded to iCloud and the device was in airplane mode: Requesting data with PHImageManager.default().requestImageDataAndOrientation Result: It does not return Data if the photo is not stored locally on the device, even with options.deliveryMode = .fastFormat Converting PHAsset#localIdentifier to an AssetsLibrary.framework URL (assets-library://asset/...) (I am aware that AssetsLibrary.framework is deprecated, but this was just a test.) Result: If PHImageManager does not returns Data, ALAsset#defaultRepresentation().metadata() returns an empty NSDictionary

Looking to output dv video to my JVC SR-VS30 video deck. I used to be able to do this, but with most firewire stuff being deprecated, I'm not sure how to go about this. I found this old developer sample code that seems to do exactly what I'd like. Surely this could be rolled or updated for current macOS? https://developer.apple.com/library/archive/samplecode/SimpleVideoOut/Introduction/Intro.html#//apple_ref/doc/uid/DTS10000809-Intro-DontLinkElementID_2

I have an app on which users learn choreography. To avoid copyright infringements we currently only have audio instructions and no music on the app. Could we enable those that are subscribed to Apple Music to listen to the part of a song the corresponds to the choreography? Usually they are 60 seconds long. The app is in React Native. Would it be possible to implement it so that opening a dance video automatically triggers the playback of that song from e.g. second 32 - 95? Since the video is looping, could it then start playing from second 32 again? Also looking for devs with experience in integrating the MusicKit for this usecase if it turns out to be possible.

I'm trying to capture the depth map image using true depth camera in iPhone 15 plus. I was able to setup the AVCapture session with AVCaptureDeviceInput as builtInTrueDepthCamera and AVCapturePhotoOutput with isDepthDataDeliveryEnabled set as true. I also manually made the activeDepthDataFormat of AVCapture device to kCVPixelFormatType_DepthFloat16 or kCVPixelFormatType_DepthFloat32. Finally I have enabled isDepthDataDeliveryEnabled, embedsDepthDataInPhoto , embedsPortraitEffectsMatteInPhoto and embedsSemanticSegmentationMattesInPhoto in AVCapturePhotoSettings before capturing the photo using capturePhoto(with: photoSettings, delegate: self) method. I have checked manually printing the activeDepthDataFormat of AVCapture device. First before setting it by default it is Optional('dpth'/'hdis' 640x 480, { 2- 30 fps}, photo dims:{}, fov:73.699, system exposure bias range:-2.0-2.0) After forcing it to kCVPixelFormatType_DepthFloat16 or kCVPixelFormatType_DepthFloat32 the format is Optional('dpth'/'hdep' 160x 120, { 2- 30 fps}, photo dims:{}, fov:73.699, system exposure bias range:-2.0-2.0) But when I receive the captured photo in func photoOutput(_ output: AVCapturePhotoOutput, didFinishProcessingPhoto photo: AVCapturePhoto, error: (any Error)?) The depth map is Optional(hdis 640x480 (high/abs) calibration:{intrinsicMatrix: [2723.07 0.00 2016.00 | 0.00 2723.07 1512.00 | 0.00 0.00 1.00], extrinsicMatrix: [1.00 0.00 0.00 0.00 | 0.00 1.00 0.00 0.00 | 0.00 0.00 1.00 0.00] pixelSize:0.001 mm, distortionCenter:{2016.00,1512.00}, ref:{4032x3024}}) Here it shows hdis instead of hdep, why is it capturing disparity map instead of true depth map. The depth quality is high and depth data accuracy is absolute. Here is my code import UIKit import AVKit import AVFoundation class ViewController: UIViewController, AVCapturePhotoCaptureDelegate { @IBOutlet weak var previewView: UIView! @IBOutlet weak var resultLbl: UILabel! private var session = AVCaptureSession() private var captureDevice: AVCaptureDevice? private var inputDevice: AVCaptureDeviceInput? private var photoOutput: AVCapturePhotoOutput? private var photoSettings: AVCapturePhotoSettings? private var cameraPreviewLayer: AVCaptureVideoPreviewLayer? override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view. self.setupCaptureSession() } func setupCaptureSession(){ captureDevice = AVCaptureDevice.default(.builtInTrueDepthCamera, for: .video, position: .unspecified) guard let captureDevice else{ print("ERROR::UNABLE TO SET TRUE DEPTH CAMERA ") return } session.beginConfiguration() do{ inputDevice = try AVCaptureDeviceInput(device: captureDevice) guard let inputDevice else{ print("ERROR: UNABLE TO SET UP INPUT DEVICE") return } if session.canAddInput(inputDevice){ session.addInput(inputDevice) } } catch{ print(error) } photoOutput = AVCapturePhotoOutput() guard let photoOutput else{ print("ERROR: UNABLE TO SET UP PHOTO OUTPUT") return } if session.canAddOutput(photoOutput){ session.addOutput(photoOutput) } session.sessionPreset = .photo photoOutput.isDepthDataDeliveryEnabled = photoOutput.isDepthDataDeliverySupported print("IS DEPTH ENABLED:: \(photoOutput.isDepthDataDeliveryEnabled)") session.commitConfiguration() let availableFormats = captureDevice.activeFormat.supportedDepthDataFormats let depthFormat = availableFormats.filter { format in let pixelFormatType = CMFormatDescriptionGetMediaSubType(format.formatDescription) return (pixelFormatType == kCVPixelFormatType_DepthFloat16 || pixelFormatType == kCVPixelFormatType_DepthFloat32) }.first session.beginConfiguration() try! captureDevice.lockForConfiguration() captureDevice.activeDepthDataFormat = depthFormat captureDevice.unlockForConfiguration() session.commitConfiguration() self.setupPreviewLayer() } func setupPreviewLayer(){ cameraPreviewLayer = AVCaptureVideoPreviewLayer(session: session) cameraPreviewLayer?.videoGravity = .resizeAspectFill if let cameraPreviewLayer{ self.previewView.layer.addSublayer(cameraPreviewLayer) cameraPreviewLayer.frame = self.previewView.bounds } DispatchQueue.global(qos: .userInteractive).async { self.session.startRunning() } } @IBAction func captureBtnPressed(_ sender: Any) { photoSettings = AVCapturePhotoSettings(format: [AVVideoCodecKey:AVVideoCodecType.jpeg]) guard let photoSettings else{ print("ERROR: UNABLE TO SETUP PHOTO SETTINGS") return } guard let photoOutput else{ print("ERROR: UNABLE TO SET UP PHOTO OUTPUT") return } photoSettings.isDepthDataDeliveryEnabled = photoOutput.isDepthDataDeliverySupported photoSettings.embedsDepthDataInPhoto = true photoSettings.embedsPortraitEffectsMatteInPhoto = true photoSettings.embedsSemanticSegmentationMattesInPhoto = true photoOutput.capturePhoto(with: photoSettings, delegate: self) } func photoOutput(_ output: AVCapturePhotoOutput, didFinishProcessingPhoto photo: AVCapturePhoto, error: (any Error)?) { print(photo.depthData) switch photo.depthData?.depthDataQuality { case .low: print("Depth quality is low") case .high: print("Depth quality is high") case nil: print("Depth quality is nil") } switch photo.depthData?.depthDataAccuracy { case .relative: print("Depth accuarcy is relative") case .absolute: print("Depth accuarcy is absolute") case nil: print("Depth accuarcy is nil") } if let imageData = photo.fileDataRepresentation(){ if let image = UIImage(data: imageData){ UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil) } } } }

Hi All, I'm working on a camera system extension where the main app is supposed to transfer a video stream using IOSurface memory sharing to the cam extension. I have built a sample app that does contains all the logic, but without a camera extension. So I'm essentially using IOSurface to render a video in one SwiftUI view and show the result in another SwiftUI view. Just for testing purposes. And everything works fine so far. Now, when moving the receiver code to the camera extensions, I'm having problems in accessing the IOSurface via ID. I am sharing the IOSurface ID via UserDefaults. I know from the logs the ID is correctly transferred. Here is the code that uses IOSurfaceLookup to get the IOSurface. But this fails with the given message. The error message prints the surface ID which is the correct one. I know this from the main app where I get the ID and print it as well. private var surfaceId: Int = -1 { didSet { logger.info("surfaceId has changed") if surfaceId == -1 { stopReceivingFrames() ioSurface = nil } else { guard let surface = IOSurfaceLookup(IOSurfaceID(surfaceId)) else { logger.error("failed to lookup IOSurface with ID: \(self.surfaceId)") return } self.ioSurface = surface logger.info("surface set, now starting receiving frames") startReceivingFrames() } } } My gut feeling says that this issue might be related to some missing entitlement, sandboxing. In general, I have a working camera extension. I'm just not able to render a video in the main app, and send it over to the camera extension to overlay another web cam. Both, the main app and camera extension are in the same XCode workspace and share the same AppGroup. In short, my actual questions are: Is there any entitlement required for using IOSurface between app and camera system extension? Is using IOSurface actually possible in system extensions? Is there any specific setting/requirement that I need to handle to make this work?

While customizing ImagePicker and using it, we find out that the metadata is not reflected normally and report it. The situation is as follows. The time or time zone of an image is changed in the Photos app. Changing the time zone of an image with an actual capture date of 2024:11:08 08:27:44 → 2024:11:07 17:27:44 Image data is extracted from a PHAsset using PHImageManager. The metadata is obtained from this image data. The time zone information exposed in the Exif tag information does not reflect the time or time zone changed in the Photos app. let asset: PHAsset = ... .... let options = PHImageRequestOptions() options.isSynchronous = true options.version = .current options.deliveryMode = .highQualityFormat options.resizeMode = .none options.normalizedCropRect = .zero options.isNetworkAccessAllowed = true options.progressHandler = { progress, error, _, _ in } PHImageManager.default().requestImageDataAndOrientation(for: asset, options: options) { imageData, uti, orientation, info in let cgImageSource = CGImageSourceCreateWithData(imageData! as CFData, nil) let properties = CGImageSourceCopyPropertiesAtIndex(cgImageSource!, 0, nil) as? Dictionary&lt;String, Any&gt; let exif = properties!["{Exif}"] let dictionary = exif as? Dictionary&lt;String, Any&gt; } Metadata Check In this case, it is reflected in the creationDate of PHAsset, so it can be somewhat compensated by forcibly replacing the metadata. However, because PHAsset does not include time zone information, when changing the time zone as well, it's impossible to calculate the correct time according to the time zone. PHPicker This issue is resolved when using the PHPickerResult provided by PHPicker. extension PhotosPickerViewController: PHPickerViewControllerDelegate { public func picker(_ picker: PHPickerViewController, didFinishPicking results: [PHPickerResult]) { ..... for result in results { let identifier = UTType.image.identifier if result.itemProvider.hasItemConformingToTypeIdentifier(identifier) { result.itemProvider.loadDataRepresentation(forTypeIdentifier: identifier) { data, error in guard let data = data, let cgImageSource = CGImageSourceCreateWithData(data as CFData, nil), let properties = CGImageSourceCopyPropertiesAtIndex(cgImageSource, 0, nil) as? Dictionary&lt;String, Any&gt;, let exif = properties["{Exif}"], let dictionary = exif as? Dictionary&lt;String, Any&gt; else { return } } } } } } Metadata Check Question I wonder why this happens, and if this is normal behavior. Instead of the System Picker that Apple provides as a base, I wonder if there is any way I can supplement it in that situation if I use a customizer.

Hello, This is about the Get Catalog Top Charts Genres endpoint : GET https://api.music.apple.com/v1/catalog/{storefront}/genres I noticed that for some storefronts, no genre is returned. You can try with the following storefront values : France (fr) Poland (pl) Kyrgyzstan (kg) Uzbekistan (uz) Turkmenistan (tm) Is that a bug or is it on purpose ? Thank you.

We have a universal iOS/tvOS app that also supports iOS App on Mac. In our AVPlayer-based video player we support AirPlay with AVRouteDetector and AVRoutePickerView. We play HLS streams. When we try to AirPlay from an iOS device to an Apple TV or a Mac that has our app installed, it doesn't work. The receiver is marked as active in the route picker UI but the video doesn't show up on the receiver and playback stops. When our app isn't installed on the receiver device, everything works as expected. Has anyone encountered the same issue? Any solutions available for this?

[[PHPhotoLibrary sharedPhotoLibrary] presentLimitedLibraryPickerFromViewController:self];弹出照片选择器时，导航栏背景颜色和导航栏字体颜色均为白色，导致无法辨认。 使用 [[UINavigationBar appearanceWhenContainedInInstancesOfClasses:@[UIImagePickerController.class]] setTintColor:[UIColor blackColor]];没有作用

I tried running the latest CaptureSample, selected local/canonical HDR, add to screen output, then stop capture. It is supposed to save the file, but no file is added at all. It works for SDR, just not for HDR. How do I get HDR working?

Are serialized parameters already available inside -pluginInstanceAddedToDocument via FxParameterRetrievalAPI or are they being read later?

I am using PHImageRequestOptions and PHImageManager to load images to my app. I use version.original and resizeMode.none, version.original and resizeMode.extract. Both used to work well but since iOS18 version.original and resizeMode.extract doesn't work anymore. The images are loaded but the they are not shown. (Only the frames?) Anyone knows why? Thank you for reading.

Hi Apple Team, We have integrated FairPlay Streaming Server SDK v3 into our MDRM platform since 2017, the system works stable and stayed untouched. As you know, both Widevine and Playready have requirements to upgrade the Server SDK regularly. We want to know if Apple imposes similar requirements for upgrading the FPS SDK, or if we may continue using the old one without any updates. Thanks for your support！

I’m currently working on a project where I capture both depth frames and RGB frames using AVCaptureDataOutputSynchronizer. Depth frames are stored as raw binary data and RGB frames are saved with AVAssetWriter. The issue I’m facing is that AVAssetWriter enforces a fixed framerate, meaning it adds or discards frames to maintain that rate (as I understand it). This causes a desynchronization between the depth and RGB frames, which is a problem because I need each depth frame to be exactly matched with the corresponding RGB frame as they were captured. How can I ensure that the RGB frames are saved without AVAssetWriter modifying the frame count?

Hi, I am a newbie here. We have been given a task to build a robotic vision system to capture an immersive video in a hazed environment, which will later be played on Apple Vision Pro. I am thinking of starting with 2 or 4 basic CMOS camera sensors, such as IMX378, AR0144, or VD66GY, and designing an FPGA-based circuit to synchronously capture and store raw frame-by-frame data. Some frame initial processing such as demosaicing and filtering can also be done by the FPGA. Then, I would use software for post-processing to convert the data into a compatible video format for Apple Vision Pro. Will this idea work? I can handle the raw data capture, but I’m unsure if this approach is feasible and what post-processing software I should use. Thanks a lot for your suggestions! Charlie

Hey - I am developing an app that uses the camera for recording video. I put the ability to choose a framerate and resolution and all combinations work perfectly fine, except for 4k 120fps for the new iPhone 16 pro. This just shows black on the preview. I tried to record even though the preview was black, but the recording is also just a black screen. Is there anything special that needs to be done in the camera setup for 4k 120fps to work? I have my camera setup code attached. Is it possible this is a bug in Apple's code, since this works with every other combination (1080p up to 240fps and 4k up to 60fps)? Thanks so much for the help. class CameraManager: NSObject { enum Errors: Error { case noCaptureDevice case couldNotAddInput case unsupportedConfiguration } enum Resolution { case hd1080p case uhd4K var preset: AVCaptureSession.Preset { switch self { case .hd1080p: return .hd1920x1080 case .uhd4K: return .hd4K3840x2160 } } var dimensions: CMVideoDimensions { switch self { case .hd1080p: return CMVideoDimensions(width: 1920, height: 1080) case .uhd4K: return CMVideoDimensions(width: 3840, height: 2160) } } } enum CameraType { case wide case ultraWide var captureDeviceType: AVCaptureDevice.DeviceType { switch self { case .wide: return .builtInWideAngleCamera case .ultraWide: return .builtInUltraWideCamera } } } enum FrameRate: Int { case fps60 = 60 case fps120 = 120 case fps240 = 240 } let orientationManager = OrientationManager() let captureSession: AVCaptureSession let previewLayer: AVCaptureVideoPreviewLayer let movieFileOutput = AVCaptureMovieFileOutput() let videoDataOutput = AVCaptureVideoDataOutput() private var videoCaptureDevice: AVCaptureDevice? override init() { self.captureSession = AVCaptureSession() self.previewLayer = AVCaptureVideoPreviewLayer(session: self.captureSession) super.init() self.previewLayer.videoGravity = .resizeAspect } func configureSession(resolution: Resolution, frameRate: FrameRate, stabilizationEnabled: Bool, cameraType: CameraType, sampleBufferDelegate: AVCaptureVideoDataOutputSampleBufferDelegate?) throws { assert(Thread.isMainThread) captureSession.beginConfiguration() defer { captureSession.commitConfiguration() } captureSession.sessionPreset = resolution.preset if captureSession.canAddOutput(movieFileOutput) { captureSession.addOutput(movieFileOutput) } else { throw Errors.couldNotAddInput } videoDataOutput.setSampleBufferDelegate(sampleBufferDelegate, queue: DispatchQueue(label: "VideoDataOutputQueue")) if captureSession.canAddOutput(videoDataOutput) { captureSession.addOutput(videoDataOutput) // Set the video orientation if needed if let connection = videoDataOutput.connection(with: .video) { //connection.videoOrientation = .portrait } } else { throw Errors.couldNotAddInput } guard let videoCaptureDevice = AVCaptureDevice.default(cameraType.captureDeviceType, for: .video, position: .back) else { throw Errors.noCaptureDevice } let useDimensions = resolution.dimensions guard let format = videoCaptureDevice.formats.first(where: { format in let dimensions = CMVideoFormatDescriptionGetDimensions(format.formatDescription) let isRes = dimensions.width == useDimensions.width && dimensions.height == useDimensions.height let frameRates = format.videoSupportedFrameRateRanges return isRes && frameRates.contains(where: { $0.maxFrameRate >= Float64(frameRate.rawValue) }) }) else { throw Errors.unsupportedConfiguration } self.videoCaptureDevice = videoCaptureDevice do { let videoInput = try AVCaptureDeviceInput(device: videoCaptureDevice) if captureSession.canAddInput(videoInput) { captureSession.addInput(videoInput) } else { throw Errors.couldNotAddInput } try videoCaptureDevice.lockForConfiguration() videoCaptureDevice.activeFormat = format videoCaptureDevice.activeVideoMinFrameDuration = CMTime(value: 1, timescale: CMTimeScale(frameRate.rawValue)) videoCaptureDevice.activeVideoMaxFrameDuration = CMTime(value: 1, timescale: CMTimeScale(frameRate.rawValue)) videoCaptureDevice.activeMaxExposureDuration = CMTime(seconds: 1.0 / 960, preferredTimescale: 1000000) videoCaptureDevice.exposureMode = .locked videoCaptureDevice.unlockForConfiguration() } catch { throw error } configureStabilization(enabled: stabilizationEnabled) }`