I would like to offer the functionality that the user aims the camera at a graph (including axes and scales) and the app detects the graph and the app replicates the graph using the image. I have the whole camera setup finished with a AVCaptureSession, VNDetectContoursRequest, VNImageRequestHandler, etc. However, now I get many many results so I guess I will now need to tell the image processing process what I am looking for. i.e. filter the VNContoursObservations. I 'think' I first need to detect two perpendicular lines (the two axes). How do I do that? If I do not see them, I can just ignore that input and wait for the next VNContoursObservation. When I found the axes of the graph, I will need to find the curve (graph) that I need to scan. Any tips on how I can find that curve and turn that curve into a bunch of coordinates? Thanks! Wouter

My App is live on app store , user are using it with iPhone 16 pro max and they are getting Operation Stopped while combining videos and audios only specifically on iPhone 16 pro max , on every other device its working fine. And When i adding AVAssetExportPresetPassthrough it able to combine videos and audios but not respecting the encoding and without audio. NSArray *compatiblePresets = [AVAssetExportSession exportPresetsCompatibleWithAsset:composition]; if ([compatiblePresets containsObject:AVAssetExportPresetHighestQuality]) { presetName = AVAssetExportPresetHighestQuality; } else if ([compatiblePresets containsObject:AVAssetExportPreset1920x1080]) { presetName = AVAssetExportPreset1920x1080; } else if ([compatiblePresets containsObject:AVAssetExportPreset1280x720]) { presetName = AVAssetExportPreset1280x720; } else { presetName = AVAssetExportPresetPassthrough; } } else { presetName = AVAssetExportPreset1280x720; }

Hi Apple Engineer, My app is using ImageCaptureCore framework to communicate to external DSLR Camera. When I connect my device to a camera, I execute the requestContentsAuthorization(completion:) to request for Access Files on Connected Cameras. This is the dialog when the request is executed: When I tap "OK", the status of content authorization keeps "Denied". even when I open "Files and Folders" permission in "Privacy & Security" Settings. When I switched ON the permission, the switch keeps back to turned off. You could see the reproduce in this GoogleDrive video https://drive.google.com/file/d/15B-R5TONgMWg8qFiYUGK0hTy62dsVGUX/view?usp=sharing The occurrence keeps happen even: I uninstall and install the app back Do "Reset Location & Privacy" Do "Reset All Settings" I attached the sysdiagnose files in this GoogleDrive file https://drive.google.com/file/d/11lovl_xC95AKXQTkZ1_e6UbEgS5md0Z3/view?usp=sharing I firstly experience this issue after researching ImageCaptureCore's API. I executed resetContentsAuthorizationWithCompletion:. After that, my permission request keeps denied as described above :( There are other developer that experiences the same as mine https://forums.developer.apple.com/forums/thread/756960 . There is a simple sample project there and it's reproducible in my case. Could you help me how to accomplished my app can be granted for permission to "Files and Folders" permission when using ImageCaptureCore? Could it be a bug from the system?

Hello everyone, I am working on an iOS app that involves capturing images automatically, and I would like to control the start/stop of the capture process remotely from a Mac app. I explored the iPhone Mirroring feature, which allows some remote control but has the limitation of only functioning when the iPhone is locked, and it doesn’t permit access to the iPhone’s camera from the Mac. Ideally, I am looking for a solution that would allow me to: Remotely control the camera capture process on the iOS app from the Mac app. Ensure the iPhone’s camera remains fully operational and controllable from the Mac during the capture process. I have considered using options like Handoff for communication between the apps but faced some issues while communicating between the iOS and mac app. I would like to know if there is a more optimal solution within Apple’s ecosystem, or if there are APIs I might have overlooked. Any advice or guidance on how to achieve this functionality would be greatly appreciated! Thanks in advance!

Hi, just generated a HDR10 MVHEVC file, mediainfo is below: Color range : Limited Color primaries : BT.2020 Transfer characteristics : PQ Matrix coefficients : BT.2020 non-constant Codec configuration box : hvcC+lhvC then generate the segment files with below command: mediafilesegmenter --iso-fragmented -t 4 -f av_1 av_new_1.mov then upload the segment files and prog_index.m3u8 to web server. just find that can not play the HLS stream on Safari... the url is http://ip/vod/prog_index.m3u8 just checked that if i remove the tag Transfer characteristics : PQ when generating the MVHEVC file. above same mediafilesegmenter command and upload the files to web server. the new version of HLS stream is can play on Safari... Is there any way to play HLS PQ video on Safari. thanks.

I have an HDR10+ encoded video that if loaded as a mov plays back on the Apple Vision Pro but when that video is encoded using the latest (1.23b) Apple HLS tools to generate an fMP4 - the resulting m3u8 cannot be played back in the Apple Vision Pro and I only get back a "Cannot Open" error. To generate the m3u8, I'm just calling mediafilesegmenter (with -iso-fragmented) and then variantplaylistcreator. This completes with no errors but the m3u8 will playback on the Mac using VLC but not on the Apple Vision Pro. The relevant part of the m3u8 is: #EXT-X-STREAM-INF:AVERAGE-BANDWIDTH=40022507,BANDWIDTH=48883974,VIDEO-RANGE=PQ,CODECS="ec-3,hvc1.1.60000000.L180.B0",RESOLUTION=4096x4096,FRAME-RATE=24.000,CLOSED-CAPTIONS=NONE,AUDIO="audio1",REQ-VIDEO-LAYOUT="CH-STEREO" {{url}} Has anyone been able to use the HLS tools to generate fMP4s of MV-HEVC videos with HDR10?

Hi, I've recently been working with the Apple Music API and have had success in loading all the playlists on my account, loading songs from each playlist, and adding songs to the ApplicationMusicPlayer.share.queue. The problem I'm running into is that not all songs from the playlist are being added to the queue, despite confirming all the songs are being based on the PlaybackView.swift I'm about to share with you. I would also like to answer other underlying questions if possible. I am also open to any other suggestions. In this scenario were also assuming isShuffled is true every time. How can I determine when a song has ended? How can I get the album title information? How can I get the current song title, album information, and artist information without pressing play? I can only seem to update the screen when I select my play meaning ApplicationMusicPlayer.shared.play() is being called. How do I get the endTime of the song? I believe it should be ApplicationMusicPlayer.shared.queue.currentEntry.endTime but this doesn't seem to work. // // PlayBackView.swift // // Created by Justin on 8/16/24. // import SwiftUI import MusicKit import Foundation enum PlayState { case play case pause } struct PlayBackView: View { @State var song: Track @Binding var songs: [Track]? @State var isShuffled = false @State private var playState: PlayState = .pause @State private var isFirstPlay = true private let player = ApplicationMusicPlayer.shared private var isPlaying: Bool { return (player.state.playbackStatus == .playing) } 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) { // Song Title Text(player.queue.currentEntry?.title ?? "Song Title Not Found") .font(.title) .fixedSize(horizontal: false, vertical: true) // How do I get AlbumTitle from here?? // Artist Name Text(player.queue.currentEntry?.subtitle ?? "Artist Name Not Found") .font(.caption) } } .padding() Spacer() // Progress View // endTime doesn't work and not sure why. ProgressView(value: player.playbackTime, total: player.queue.currentEntry?.endTime ?? 1.00) .progressViewStyle(.linear) .tint(.red.opacity(0.5)) // Duration View HStack { Text(durationStr(from: player.playbackTime)) .font(.caption) Spacer() if let duration = player.queue.currentEntry?.endTime { Text(durationStr(from: duration)) .font(.caption) } } Spacer() Button { Task { do { try await player.skipToNextEntry() } catch { print(error.localizedDescription) } } } label: { Label("", systemImage: "forward.fill") .tint(.white) } Spacer() // 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() .onAppear { if isShuffled { songs = songs?.shuffled() if let songs, let firstSong = songs.first { player.queue = .init(for: songs, startingAt: firstSong) player.state.shuffleMode = .songs } } } .onDisappear { player.stop() player.queue = [] player.playbackTime = .zero } } private func handlePlayButton() { Task { if isPlaying { player.pause() playState = .pause } else { playState = .play await playTrack() } } } @MainActor private func playTrack() async { do { try await player.play() } catch { print(error.localizedDescription) } } private func durationStr(from duration: TimeInterval) -> String { let seconds = Int(duration) let minutes = seconds / 60 let remainder = seconds % 60 // Format the string to ensure two digits for the remainder (seconds) return String(format: "%d:%02d", minutes, remainder) } } //#Preview { // PlayBackView() //}

In a photo editing extension, is it possible to display the photo in HDR? In this context you only have a placeholder UIImage and a PHContentEditingInput which has a displaySizeImage and fullSizeImageURL. The displaySizeImage has isHighDynamicRange false.

I'm updating my Photo Editing Extension to support HDR. To do this I set imageView.preferredImageDynamicRange = .high. But you can turn off the option to view HDR photos in the complete dynamic range in Settings > Photos. When you do that, open a photo, and tap the edit button, it does not appear in the full range as expected, but when you select my app from More > Extensions, it does appear in the complete dynamic range unexpectedly. I need to set imageView.preferredImageDynamicRange = .standard when View Full HDR is off, but I don't see any way to get that in my PHContentEditingController.

Hi everyone, I’ve encountered an issue with the showsPlaybackControls property in AVPlayerViewController after updating to iOS 18. Even though it’s set to true, the native playback controls (play, pause, etc.) are no longer appearing as they used to in previous iOS versions. This behavior was consistent and worked perfectly prior to iOS 18. Additionally, I’m seeing the same problem when using the VideoPlayer in SwiftUI. The native controls that should appear by default seem to have vanished after the update. Has anyone else experienced this? Is there any workaround or additional configuration required to restore the native controls? Any help or insights would be appreciated. Thanks! struct CustomPlayerView: UIViewControllerRepresentable { let player: AVPlayer func updateUIViewController(_ playerController: AVPlayerViewController, context: Context) { playerController.player = player playerController.showsPlaybackControls = true player.play() } func makeUIViewController(context: Context) -> AVPlayerViewController { return AVPlayerViewController() } }

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 am developing an iOS app that uses YOLOv8 for object detection and aims to detect objects at 60 FPS using the UltraWide camera. My goal is to process every frame within captureOutput and utilize the detected data (such as coordinates) for each one. I have a question regarding how background thread processing behaves in this scenario. Does the size of the YOLO model (n, s, m, etc.) or the weight of the operations inside captureOutput affect the number of frames that can be successfully processed? Specifically, I would like to know if all frames will be processed sequentially with a delay due to heavy processing in the background, or if some frames will be dropped and not processed at all. Any insights on how to handle this would be greatly appreciated. Thank you!

Hello, I am a developer currently working on an AR application using ARKit. I aim to implement a Zoom feature that allows users to enlarge and reduce objects within the AR scene while simultaneously measuring the distance to those objects. Specifically, I want to incorporate Optical Zoom to provide a more natural and precise user experience. I have considered several approaches and would appreciate your advice on the most effective methods. Approaches Being Considered: Using UIPinchGestureRecognizer to Adjust the Camera's Field of View Modifying the scale Property of SCNNode to Enlarge/Reduce Specific Objects Leveraging AVFoundation to Control the Camera's Optical Zoom Questions: Compatibility Between ARKit and Optical Zoom: Is it feasible to control the camera's optical zoom using AVFoundation while utilizing ARKit's features? What should be considered when integrating these two frameworks? Integrating Object Distance Measurement with Zoom Functionality: What is the most effective approach to measure and display the distance to an object in real-time when a user zooms in on it? User Experience Considerations: Do you have any UI/UX design tips for implementing optical zoom to ensure a natural and intuitive experience? For example, how can visual feedback for zoom actions and distance measurements be effectively presented to users? Performance Optimization: What optimization strategies can minimize potential performance issues when implementing both optical zoom and distance measurement features simultaneously? Example Code and Reference Materials: Could you share any example code or reference materials that demonstrate similar functionalities? Thank you. Example Code Request: If possible, providing sample code that integrates optical zoom with distance measurement would be extremely helpful. Reference Links: Please share any tutorials or resources that demonstrate the combined use of ARKit and AVFoundation.

Title says it all.

Since updating to iOS 18.1 my WhatsApp no longer allows reply in my car and will only read one message at a time…

Hello, I submitted a Request for a Deployment Package. However, I have not received any emails yet. Could you please let me know when I can expect a confirmation message? Thank you.

The list of certificates on the Apple Developer web console shows the expiry of my Fairplay Streaming certificate as 'Never'. However, if I download the same certificate and import it into my KeyChain, the certificate details show the listed expiry as 11 OCT 2023. Which of these is correct? If the expiry in the certificate is correct, how do I renew it safely. With my App the below lines fails at the process of -streamingContentKeyRequestData- CODE guard let contentIdData = (loadingRequest.request.url?.host ?? "").data(using: .utf8), let spcData = try? loadingRequest.streamingContentKeyRequestData( forApp: certificate!, // This certificate is expired contentIdentifier: contentIdData, options: nil ) else { print("Error: Failed to generate SPC data due to expired certificate.") loadingRequest.finishLoading(with: NSError(domain: "com.example.error", code: -3, userInfo: nil)) return false }

When we tried to play the encrypted playback for the Verimatrix DRM provider on their player, it did not play on iOS devices. Upon further communication with them, we learned that we need an FPS deployment package from Apple to set up our organization's lab account in the DRM environment. I first tried using my personal Apple account, and then I created a new Apple account with my organization's email address. Both accounts are showing the same error, 'Your account can’t access this page,' when clicking on the FPS deployment package from this link: https://developer.apple.com/streaming/fps/. The error likely arises from insufficient permissions or account roles required to access Apple’s DRM resources. Could you please support to resolve this permission issue or how should we proceed to obtain the FPS deployment package to make the successful fairplay encrypted playback? Awaiting for your response. Thanks, Ramajayadevi.

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.

Hi everyone, I’m experiencing an issue where audio interruptions (e.g., phone calls) are not being intercepted while running sound classification in an app that uses the AVAudioSession. Classification works fine, but interruptions aren’t handled, even though I’ve followed Apple’s guidelines on handling audio interruptions [1_Document]. The classification was initially based on [2_Classifer], where it worked perfectly. However, when I adopted classification in a more camera-focused app using [3_Cam], the interruption behavior stopped working. The classification setup is functioning with [3_Cam], but audio interruptions are not triggered. The listener is invoked before starting sound analysis as suggested in [2_Classifier]. startListeningForAudioSessionInterruptions() try startAnalyzing([(request, observer)]) FYI, one change I have made for classifications is following. This works fine in all cases. // try audioSession.setCategory(.record, mode: .default) try audioSession.setCategory(.playAndRecord, mode: .default, options: [.defaultToSpeaker, .allowBluetooth]) I suspect the issue might be related to the AVAudioSession configuration or how the app handles recording and playback together. Is there anything else I should check related to AVAudioSession? Are there additional APIs I could use to pre-check or better handle audio interruptions? Any suggestions or guidance would be greatly appreciated! Platform: Swift 5, Xcode 16, iOS 18. References: Document Classifier Cam Best Regards