I filed FB24725256 with a live macOS Bluetooth diagnostic, Sysdiagnose, and System Information Report. Environment: MacBook Pro (Mac17,6), Apple M5 Max, 128 GB RAM macOS 26.5 (25F71) AirPods Pro 3, firmware 8B41 AirPods selected for both input and output because microphone input is required for dictation and voice typing Problem: Bluetooth playback repeatedly stutters and cuts out during sustained local development and AI-agent workloads. The AirPods signal is strong (roughly -46 to -52 RSSI), and the Mac remains otherwise usable. Unified logs recorded repeated AudioSkywalkReadLoop overwait events in bluetoothd, commonly 50–69 ms and previously up to 795 ms. CoreAudio also reported HALS_OverloadMessage failures because a client exceeded its I/O-cycle budget and a safety violation occurred. Steps to reproduce: Connect AirPods Pro and keep them selected for input and output. Stream audio. Run sustained CPU- and memory-intensive development work, such as multiple builds, browser workloads, simulators, or local AI agents. Observe repeated playback interruptions as CPU load and memory compression increase. Expected: macOS should protect real-time CoreAudio and Bluetooth transport deadlines on this hardware without requiring productive work to be paused or throttled. The same AirPods stream reliably from much smaller Apple devices; Apple's highest-end Mac should maintain audio continuity too. This is a platform-quality failure on a high-end Mac. This appears related to longstanding reports: Simulator/Xcode causing AirPods distortion: https://developer.apple.com/forums/thread/668170 CoreAudio overloads and dropouts associated with memory pressure: https://developer.apple.com/forums/thread/677383 Bluetooth headset interruptions on newer macOS releases: https://developer.apple.com/forums/thread/763848 If you can reproduce this, please boost this thread and file your own Feedback Assistant report with fresh Bluetooth logs and a Sysdiagnose. Include the exact occurrence time and reference FB24725256 so Apple can connect the reports.I filed FB24725256 with a live macOS Bluetooth diagnostic, Sysdiagnose, and System Information Report. Environment: MacBook Pro (Mac17,6), Apple M5 Max, 128 GB RAM macOS 26.5 (25F71) AirPods Pro 3, firmware 8B41 AirPods selected for both input and output because microphone input is required for dictation and voice typing Problem: Bluetooth playback repeatedly stutters and cuts out during sustained local development and AI-agent workloads. The AirPods signal is strong (roughly -46 to -52 RSSI), and the Mac remains otherwise usable. Unified logs recorded repeated AudioSkywalkReadLoop overwait events in bluetoothd, commonly 50–69 ms and previously up to 795 ms. CoreAudio also reported HALS_OverloadMessage failures because a client exceeded its I/O-cycle budget and a safety violation occurred. Steps to reproduce: Connect AirPods Pro and keep them selected for input and output. Stream audio. Run sustained CPU- and memory-intensive development work, such as multiple builds, browser workloads, simulators, or local AI agents. Observe repeated playback interruptions as CPU load and memory compression increase. Expected: macOS should protect real-time CoreAudio and Bluetooth transport deadlines on this hardware without requiring productive work to be paused or throttled. The same AirPods stream reliably from much smaller Apple devices; Apple's highest-end Mac should maintain audio continuity too. This is a platform-quality failure on a high-end Mac. This appears related to longstanding reports: Simulator/Xcode causing AirPods distortion: https://developer.apple.com/forums/thread/668170 CoreAudio overloads and dropouts associated with memory pressure: https://developer.apple.com/forums/thread/677383 Bluetooth headset interruptions on newer macOS releases: https://developer.apple.com/forums/thread/763848 If you can reproduce this, please boost this thread and file your own Feedback Assistant report with fresh Bluetooth logs and a Sysdiagnose. Include the exact occurrence time and reference FB24725256 so Apple can connect the reports.

AirPlay fails when Mac is connected to iPhone Personal Hotspot I’m using AVRoutePickerView to route audio from an iPhone app to a Mac with AirPlay Receiver enabled. What works When the iPhone and Mac are connected to the same Wi-Fi network, AirPlay routing works normally. Routing audio back to the iPhone speaker or to connected AirPods over Bluetooth also works correctly. What fails When the iPhone provides a Personal Hotspot and the Mac connects to that iPhone’s hotspot, the Mac still appears as an available destination in AVRoutePickerView. However, selecting the Mac fails with: Unable to connect to “[Mac Name]” Questions Is AirPlay routing from an iPhone hosting a Personal Hotspot to a Mac connected to that hotspot a supported network topology? If it is supported, are there any additional AVAudioSession, networking, entitlement, or AirPlay configuration requirements for this scenario? The fact that the Mac is successfully discovered and displayed by AVRoutePickerView, but the connection itself fails, is the part I’m particularly trying to understand. Thank you for any guidance on the expected behavior here.

My app publishes a NowPlaying.RemoteMediaSession for music playing on speakers on the local network. While the app is in the background and someone taps play on my widget, that intent runs in my app process and wakes the app in the background — it can fetch the speaker state and start and update the remote session without any trouble. As of Beta 6, the session is created successfully but never shows up in Control Center or on the Lock Screen. It only appears the moment I bring my app to the foreground. In earlier betas the same code showed the session in control center, without needing to open the app. I don't call requestToBecomeSystemPrimary() and I don’t expect it to be set as primary, only when my app is in the foreground but at least the session should appear in control center or the lock screen as an option for the user to set it to system primary. FB24439526 has been submitted with Sysdiagnose attached.

Our sandboxed macOS app digitises audio cassettes and builds one playlist per cassette in the user's Apple Music library that follows the tape's order: catalog songs where a title was recognised, and the user's own recordings (AAC files the app exported from the tape) where it was not. The user has an Apple Music subscription and Sync Library on. On macOS every write on MusicLibrary is marked @available(macOS, unavailable) in the 26.5 SDK – add, add(_:to:), createPlaylist and edit (see thread 844114, which got no answer). So we build the playlist through Music.app's scripting interface: make new user playlist, duplicate <library track> to <playlist> for catalog songs, add <file> to <playlist> for own recordings. That works, with one exception that leads to our questions. What we observe Reproducible on macOS 26.6.2 / Music 26; a standalone AppleScript is at the end. A playlist built in one go from 14 subscription tracks keeps all 14. The same playlist with one local file added after the second track: all 15 entries are there right after the build and one second later. About 15 s later the playlist has 3 entries – the two catalog entries before the file, the file, and nothing that was added after it. No error anywhere. If the file has been in the library for several minutes before the playlist is built, everything stays. Adding it to the library and waiting 45 s is not enough. Meanwhile the track's cloud status stays unknown, and GET /v1/me/library/search?types=library-songs does not list it (checked for 10 minutes). Emptying the playlist and building it again ~30 s after the entries were removed keeps everything, every time. That is what we do today; it costs 30–40 s per import, and we have to tell the user that entries were removed and put back. Our reading: while the freshly added file is not yet registered in iCloud Music Library, the playlist as pushed to the server is cut at the first item the server cannot reference, and the next sync adopts the shorter list for cloud items while keeping the local-only item in place. Questions Is there a supported way for a macOS app to create a library playlist and add tracks to it? Specifically: is the Apple Music API (POST /v1/me/library/playlists with relationships.tracks, and POST /v1/me/library/playlists/{id}/tracks) the intended route from a macOS app holding a MusicKit user token, and can such a playlist reference the user's own uploaded songs by their library id (i.…)? After a local file has been added to the library (via Music.app's add, or any other supported way), how can an app learn that iCloud Music Library has registered it, and what its library song id is? A notification, a MusicKit property, an Apple Music API endpoint? We would wait on that signal instead of rebuilding. Is the removal described above expected behaviour? Catalog ids are re-resolved at import time via id, ISRC and search as recommended in thread 122110, so stale catalog ids are not the cause. Reproduction Needs Sync Library on, at least 14 subscription tracks in the library, and a local audio file the library does not know yet. Prints the counts after 1 s, 21 s and 41 s, then cleans up. on run argv set localFile to POSIX file (item 1 of argv) tell application "Music" set cloudTracks to (every track of library playlist 1 whose cloud status is subscription) set idsBefore to persistent ID of every track of library playlist 1 set pl to make new user playlist with properties {name:"Reconciliation repro"} repeat with i from 1 to 2 duplicate (item i of cloudTracks) to pl end repeat set fileTrack to add localFile to pl set fileID to persistent ID of fileTrack repeat with i from 3 to 14 duplicate (item i of cloudTracks) to pl end repeat set n0 to count of tracks of pl delay 1 set n1 to count of tracks of pl delay 20 set n2 to count of tracks of pl delay 20 set n3 to count of tracks of pl delete pl if fileID is not in idsBefore then delete (first track of library playlist 1 whose persistent ID is fileID) return "after build: " & n0 & ", after 1 s: " & n1 & ", after 21 s: " & n2 & ", after 41 s: " & n3 end tell end run Output here: after build: 15, after 1 s: 15, after 21 s: 3, after 41 s: 3.

I’m developing a native visionOS application that uses an external HDMI capture device connected to Apple Vision Pro through the Developer Strap. The goal is to use Apple Vision Pro as a low-latency display for external HDMI sources such as an Xbox Series X, including both the HDMI video and the original digital game audio. My current hardware path is: Xbox Series X → HDMI → Elgato 4K X → USB-C → Apple Vision Pro Developer Strap The Elgato 4K X receives both video and audio from the Xbox over HDMI. What is working UVC video capture is working successfully on visionOS. The external Elgato capture device can be used as the video source and the Xbox video is displayed correctly inside the Vision Pro application. I have also verified the Elgato 4K X independently on macOS, where the device is recognized correctly. The problem I cannot find a supported way on visionOS to access the USB Audio Class (UAC) audio interface associated with the capture device. I specifically need the digital game audio originating from: Xbox HDMI → Elgato 4K X → USB/UAC → visionOS I do not want to use the Apple Vision Pro’s built-in microphone. Selecting/capturing the Vision Pro microphone would only record environmental sound and is not a substitute for the digital HDMI audio stream. Apple’s visionOS documentation for external devices through the Developer Strap appears to focus on UVC video capture. I haven’t been able to determine whether the accompanying UAC interface of a UVC/UAC composite capture device is exposed to visionOS applications. What I’ve tried / verified Connected an Xbox Series X to the HDMI input of an Elgato 4K X. Connected the 4K X to Apple Vision Pro through the Developer Strap. Successfully discovered and received the external UVC video stream. Successfully displayed the Xbox video feed in visionOS. Confirmed that the 4K X itself is recognized and functional on macOS. Attempted to obtain audio corresponding to the external capture source. The Vision Pro microphone is available as an audio source, but this is not the audio source required. I have not found a documented visionOS API that exposes the 4K X’s USB/UAC audio endpoint through the Developer Strap. Questions Does visionOS currently support USB Audio Class input devices connected through the Apple Vision Pro Developer Strap? If a device exposes both UVC video and UAC audio interfaces, is there a supported way to associate/access both interfaces from a visionOS application? If UAC is supported, which framework/API should be used to discover the external audio endpoint — AVFoundation, Core Audio, or another API? Does accessing the UAC interface require an entitlement in addition to UVC device access? If generic UAC access through the Developer Strap is currently unavailable to third-party visionOS applications, is there a restricted/managed entitlement that developers can request? If this isn’t currently supported, what is Apple’s recommended architecture for receiving synchronized video and audio from an HDMI capture device on Apple Vision Pro? Ultimately, I’m trying to achieve: HDMI source → UVC video + UAC audio → visionOS application → video displayed in Vision Pro + audio played through Vision Pro speakers/AirPods Since UVC video from this exact hardware is already working, I’m primarily trying to determine whether access to the accompanying USB audio interface is possible with the current visionOS SDK, requires another entitlement/API, or is currently unsupported. Any guidance from Apple or developers who have worked with composite UVC/UAC devices on Vision Pro would be greatly appreciated.

My volume will randomly go all the way down to mute or all the way up to full blast while I’m listen to music, watching a video, playing a game. I have all the volume safety features turned off. Does anyone else have this issue?

TN3135 describes the exception that lets a watchOS app use low-level networking while it holds an active audio session. I have that working, and the app functions — but the network path is withdrawn and restored on a strikingly regular cycle, and I would like to know whether that is expected behaviour rather than something I am doing wrong. Setup Apple Watch Series 10 (Watch7,9), watchOS 26.5. Reproduced on a Series 6 (Watch6,2). UIBackgroundModes: [audio]; AVAudioSession category .playAndRecord, mode .spokenAudio; activated with the async activate(options:completionHandler:). NWConnection with NWProtocolWebSocket to a WebSocket relay over TLS. The app streams 16 kHz mono PCM continuously while transmitting and holds the socket open otherwise. Symptom NWPathMonitor reports .unsatisfied, then .satisfied about two seconds later, over and over. Measured with the iPhone powered off, so the watch was on its own Wi-Fi: Uptime between drops Outage 36.4 s 2.1 s 36.7 s 1.9 s 36.9 s 2.1 s The regularity is what prompts the question — uptime varies by ±0.3 s and the outage is consistently 2.0 s. That reads as a timeout expiring rather than radio behaviour. What I have ruled out Not the network or the server. A browser client on the same relay, same TLS, same wire protocol, holds a WebSocket indefinitely. Not the interface. Identical cadence over the companion ipsec1 tunnel with the iPhone present, and over the watch's own en0 with the iPhone powered off. Pinning requiredInterfaceType = .wifi while the iPhone is reachable fails outright — the path offers only ipsec1. Not audio-session interruption. I observe interruptionNotification, routeChangeNotification, mediaServicesWereResetNotification and silenceSecondaryAudioHintNotification. None fire at a drop. At the moment the path goes .unsatisfied, the engine is running and the player node is actively playing. Not session idleness. Playing continuous silence for the whole session, rather than only while reconnecting, made no difference — still 36.4 s. The control that surprised me To test whether this affects any long-lived watch socket or only audio-unlocked ones, I built a second app with no AVAudioSession at all, no audio background mode, holding a URLSessionWebSocketTask and kept alive by a WKExtendedRuntimeSession so screen sleep was not a factor. It never connected. NWPathMonitor reported .unsatisfied once and never changed, across a 30 s run, and every request failed with "The Internet connection appears to be offline." I had expected URLSession to be permitted regardless. Questions Does the audio-session networking exception in TN3135 have a defined lifetime, and is a periodic revoke/re-grant cycle expected? If so, is there a supported way to hold it continuously — or is the correct design simply to expect the interruption and reconnect through it? Is it expected that an app with no audio session gets no network path at all on watchOS, including via URLSession, even in the foreground with an extended runtime session?

Good morning! I work on a meditation app, and since Sleep Detection was introduced for AirPods in iOS 26, we've been receiving complaints from users reporting that their meditation sessions unexpectedly stop after approximately 15–20 minutes when Sleep Detection is enabled. This seems to happen particularly during deep meditation sessions, where the user may remain still and exhibit behavior that could potentially be interpreted as falling asleep. I've also tested this on iOS 27 with the latest beta firmware available for AirPods Pro, and the same behavior still occurs. While investigating and debugging the issue, I found that there doesn't appear to be any public API that allows an app to determine that playback was paused specifically because of AirPods Sleep Detection. From the application's perspective, the AirPods appear to simply send a standard pause command to the AVPlayer, without providing any additional context or reason. There also doesn't seem to be an API that allows us to determine whether the user has Sleep Detection enabled. Even having access to that information would allow us to warn users that their meditation session could potentially be interrupted. AVAudioSession.InterruptionReason does not seem to help in this case either: https://developer.apple.com/documentation/avfaudio/avaudiosession/interruptionreason Is there currently any supported way for an app to: Detect that playback was paused specifically because of AirPods Sleep Detection? Determine whether Sleep Detection is enabled for the connected AirPods? Prevent Sleep Detection from pausing playback for specific apps or specific types of audio sessions? If none of these are currently possible, could Apple consider providing either a notification/callback indicating that Sleep Detection triggered the pause, or an option for users to exclude specific apps from Sleep Detection? This behavior is particularly problematic for meditation apps, since a user in a deep meditation session can easily be mistaken for someone who has fallen asleep. Other meditation apps appear to be affected by the same behavior as well. Best regards, Carlos Antunes

Hello Apple Developer community, I'm building an Apple Music client for HarmonyOS (Huawei's operating system) and would like to clarify the licensing and technical approach before submitting to a third-party app store (Huawei AppGallery). I've read the Apple Developer Program License Agreement and App Store Review Guideline 4.5.2, but there are platform-specific constraints I'd like to discuss. Background Apple currently does not provide a MusicKit SDK for HarmonyOS. The available options are: MusicKit for iOS/macOS — not applicable (different OS) MusicKit for Android — ships as proprietary .aar binaries that cannot be redistributed and are not compatible with HarmonyOS's runtime MusicKit JS — available, but HarmonyOS WebView does not support FairPlay or Widevine EME, so full-song DRM playback through MusicKit JS does not work on this platform The only Apple Music API access path available to a HarmonyOS app is the REST API (api.music.apple.com) with a Developer Token (JWT, ES256) and a Music User Token obtained through the MusicKit JS authorization flow running inside a WebView. The technical constraint To deliver full-song playback for subscribed Apple Music users on HarmonyOS, our app retrieves the HLS playback URL via the Apple Music API, downloads the encrypted media segments, and decrypts them using HarmonyOS's native DRM system (WisePlay, the only CDM available on the platform). MusicKit JS's FairPlay/Widevine CDM is not compatible with HarmonyOS — WisePlay is the sole DRM implementation the OS exposes. We are aware that Section 4.5.2 states: "You may not, and You may not permit Your end users to, download, upload, or modify any MusicKit Content" and "You may play MusicKit Content only as rendered by the MusicKit APIs or MusicKit JS" What we want to clarify Our playback implementation works as follows, and we want to confirm whether it is acceptable under the license terms: No download service is offered to users. The download is purely an internal playback mechanism — the app fetches encrypted segments, decrypts them in memory / a protected sandbox, and plays them via the system AVPlayer. There is no "download button," no offline library, no user-facing download feature. Decrypted files are ephemeral and protected. Decrypted media is written to the app's private sandbox (not accessible to users or other apps), played immediately, and deleted as soon as playback ends or the song is skipped. The decrypted file never persists beyond the current playback session. No file leakage. The decrypted content is never exposed via any sharing mechanism, file picker, or external storage. It exists only within the app's protected data directory for the duration of playback. Standard playback controls are preserved. Users initiate playback and can use play / pause / skip / seek — the same controls required by 4.5.2(i). No monetization of Apple Music access. The app does not charge for Apple Music playback, does not show ads around it, and does not collect or share user data. Our question Given that: Apple has no SDK presence on HarmonyOS, MusicKit JS DRM is technically non-functional on HarmonyOS WebView, the only way to deliver full-song playback to Apple Music subscribers on this platform is to decrypt the stream using the OS's native DRM (WisePlay) with strict ephemeral handling, is this playback approach acceptable under the Apple Developer Program License Agreement, provided that: decrypted content is never persisted, shared, or exposed to users, the app only serves subscribed Apple Music users with valid Music User Tokens, all usage remains within the scope of facilitating access to the user's own Apple Music subscription? We fully respect Apple's content protection requirements and are happy to adjust the implementation (e.g., stricter deletion timing, additional sandboxing, attestation) to comply. We just want to understand whether the fundamental approach — decrypting via the host OS's DRM because Apple's own CDMs are unavailable on this platform — is permissible, or whether Apple considers HarmonyOS out of scope for full-song playback entirely. Any guidance from the MusicKit team or community members who have dealt with non-Apple-platform constraints would be greatly appreciated. Thank you.

Hi, I’m developing an iOS app that captures the user’s voice and sends the microphone input to an AI model for speech processing. For this use case, Voice Isolation provides a significantly better input signal in noisy environments. However, I’m currently unable to enable Voice Isolation programmatically when the app starts recording. As I understand it, microphone modes such as Automatic, Standard, Voice Isolation, and Wide Spectrum are controlled by the user through the system UI. My app can detect/observe the current microphone mode, but I have not found a public API that allows the app to select Voice Isolation itself. My questions are: Is there currently a supported public API to programmatically switch the microphone mode from Automatic/Standard → Voice Isolation? If direct selection is not supported, is there a recommended way for an app that primarily processes speech/voice input for an AI model to request or prefer Voice Isolation? Would using AVAudioSession with an appropriate voice-processing configuration, such as .voiceChat, or enabling voice processing through AVAudioEngine, provide equivalent Voice Isolation processing? Is AVCaptureDevice.showSystemUserInterface(.microphoneModes) the intended approach when an app needs the user to change the microphone mode? I understand that Apple may intentionally keep microphone-mode selection under user control. I’m mainly trying to determine whether there is a supported programmatic approach that I may have overlooked, rather than relying on a custom noise-suppression implementation. Any guidance on the recommended architecture for this use case would be greatly appreciated. Thank you!

I have both apple devices, AirPods Pro 3 is up to date and Ultra 3 is on watch os 26.1 latest public beta. Each morning when I would go on my mindfulness app and start a meditation or listen to Apple Music on my watch and AirPods Pro 3, it will play for a few seconds then disconnects. My bluetooth settings on my watch says my AirPods is connected to my watch. I also have removed the tick about connecting automatically to iPhone on the AirPods setting in my iPhone. To fix this I invariably turn off my Apple Watch Ultra 3 and turn it on again. Then the connection becomes stable. I am not sure why I have to do this each morning. It is frustrating. I am not sure why this fix does not last long? Is there something wrong with my AirPods? Has anyone encountered this before?

Connected my iphone 16 pro to my wireless carplay infotainment system, everything is okay but once a phonecall comes in, the audio just comes from one side of the car (passenger side). I've tried to connect my girlfriend's phone (non-apple) and it sounds fine with phone calls. I've tried resetting the systems on both the car and the phone. Music plays fine. Just the phone call situation is what is bothering at the moment.

Our macOS app uses MusicKit to search the Apple Music catalog and browse the customer's library. We are not using ApplicationMusicPlayer for playback. The customer's own Music app is the player, and our app is acting as a browser and remote for it. When the customer picks a catalog search result that is not already in their library, we would like to add it to their library, or to a playlist we create and clearly label as belonging to our app, so that it becomes playable from their library. Is using MusicLibrary to add a catalog item to the user's library a supported use of MusicKit in an app that does not itself play the content? Is creating and writing to a clearly labelled playlist of our own preferable to adding to the top-level library, or is either fine? Is there any supported way to hand a catalog item to the Music app for playback without adding it to the library first? We have tried open location with a music.apple.com URL, which opens the item's page but does not begin playback.

We are building a macOS application that we distribute directly from our website, signed with a Developer ID certificate and notarized. It is not on the Mac App Store and we do not plan to put it there. We want to add MusicKit so a customer can browse and play their own Apple Music library inside our app. We have the MusicKit App Service available to enable on an explicit App ID matching the app's bundle identifier, and we understand that MusicKit is not gated by an entitlement and that no private key is needed on Apple platforms. What we cannot find addressed anywhere is the distribution channel itself. Will MusicAuthorization.request and MusicLibraryRequest work in a Developer ID signed and notarized app distributed outside the Mac App Store, or does MusicKit require Mac App Store distribution?

Hello, I am developing an iOS app that uses MusicKit and ApplicationMusicPlayer to create automatic transitions between songs from Apple Music. The app already analyzes tracks using BPM, musical key and danceability, orders them for compatible transitions, and uses MusicPlayer.Transition.crossfade for playback. With the public MusicKit APIs, however, I have reached a limitation. ApplicationMusicPlayer manages the playback queue and crossfade internally. I cannot independently control the outgoing and incoming Apple Music tracks as two decks, which would be required for DJ-style transitions (for example, starting the incoming track while independently controlling the outgoing track, choosing precise mix points, and managing the two playback positions during the overlap). I experimented with MusicPlayer.Queue.Entry startTime and endTime, but changing the end point is not equivalent to having independent deck control and can result in the current track ending before the desired transition. I understand that Apple Music content is protected and that direct access to decoded audio samples may intentionally not be available through the public MusicKit APIs. I am not looking to download, extract, record, or export Apple Music audio. My use case is real-time playback only, for authenticated Apple Music subscribers. My questions are: Is there a public API that allows two Apple Music tracks to be independently controlled and mixed in real time? If not, is there a restricted entitlement, API, or developer program available for DJ/mixing applications? If this capability requires a commercial or technical partnership with Apple Music rather than a public API, is there an official channel through which a developer can request or discuss such access? I am aware that some third-party DJ applications provide real-time mixing with Apple Music, so I would like to understand whether there is an officially supported integration path for other developers, rather than trying to work around the limitations of ApplicationMusicPlayer. Thank you.

I am developing DOWNBEAT, a paid macOS Audio Unit plugin for Logic Pro live playback control. The plugin reads marker, tempo, and time signature data from a user-selected Logic Pro project and lets performers build a stage setlist. During live use, the performer needs to click a song in DOWNBEAT and have Logic Pro move the playhead directly to that song’s marker position. The current reliable method uses Logic Pro controller assignments mapped to “Go to Marker Number 1” through “Go to Marker Number 20.” This works for markers 1-20, but Logic Pro does not appear to expose direct “Go to Marker Number 21” or higher commands. I need to know whether Apple provides any supported public API, control-surface API, MIDI Device Script capability, Audio Unit host interaction, Apple Event, or other documented mechanism that allows a third-party macOS app/plugin to move Logic Pro’s playhead directly to a bar/beat position or marker position without opening a modal window. This is for live performance, so reliability is critical. Methods that open the “Go to Marker” or “Go to Position” window and type values are not acceptable, because they create visible UI interruptions during a show. What I have already tested: Logic Pro controller assignments: “Go to Marker Number 1” through “Go to Marker Number 20” work. “Go to Marker Number 21” does not appear to exist as a direct assignable command. Logic Pro MIDI Device Script / Lua control-surface script: I created a temporary MIDI Device Script that mapped a test control to “Go to Marker Number 1.” That worked. I then mapped another test control to “Go to Marker Number 21.” That did not work. I also tested “Go to Marker Number...” and it did not provide a usable direct non-modal workflow. MIDI Machine Control / SMPTE Locate: Logic received incoming MIDI, but location behavior was not reliable enough for live use. In multi-tempo projects, locate results could land incorrectly or cause visible playhead jumps. Logic Environment meta events: Tested incoming MIDI through the Logic Environment. MIDI was visible, but it did not provide reliable direct marker navigation. Mackie Control / MCU direction: Research suggests MCU marker commands do not provide direct absolute marker selection beyond the limited marker/function range. Specific questions: Is there a supported public way for a third-party macOS app, Audio Unit plugin, MIDI Device Script, or Logic Pro control-surface integration to set Logic Pro’s playhead directly to a specific bar/beat position? Is there a supported public way to trigger direct marker navigation beyond “Go to Marker Number 20” without opening a modal window? If the answer is no, is the recommended Apple-supported approach for this use case to limit direct marker navigation to the first 20 markers? Is there any supported Logic Pro control-surface API or developer program path that would allow this kind of direct live-performance marker navigation?

Hi there, I recently launched a dj app to the mac app store, and was wondering how I could access songs for mixing purposes via Apple Music just like how serato, rekordbox, djay, and other DJ apps do? Thanks, Gunek

I'm trying to update an old unity app for a client. The app has been crashing on iOS in a plugin they use called NatCorder. They use it to record video only separately and then re-record it with effects and audio gathered separately. Instead of trying to update the plugin to something else which would be quite the hassle, I noticed the API for the native part of the plugin, where the crash occurs, is very simple, especially if you don't try to support everything the plugin does and the app does not use. So I tried to re-implement that native library using AVFoundation. I got the video recording right, it captures the camera from the iPhone and writes it to a file properly. However, when the app does the second part, where it sends video and audio frames to the plugin, it fails. The app sends all the video frames and then sends all the audio frames. The video frames are eaten fine by AVFoundation but the audio fails at random points with unknown errors. I wonder if I'm trying to use incompatible audio-video formats or if I'm using timestamps wrong or something. Here's my init code. Anything suspicious to you? void* NCCreateMP4Recorder(int width, int height, float framerate, int bitrate, int keyframeInterval, int sampleRate, int channelCount, const char* recordingPath, void (*callback)(void*, void*), void* context) { Recorder* recorder = calloc(1, sizeof(Recorder)); recorder->context = context; recorder->callback = callback; recorder->path = strdup(recordingPath); recorder->width = width; recorder->channelCount = channelCount; recorder->sampleRate = sampleRate; recorder->height = height; NSError *error = nil; NSURL* url = createURLFromArgumentCString(recordingPath); recorder->writer = [AVAssetWriter assetWriterWithURL:url fileType:AVFileTypeMPEG4 error:&error]; if (recorder->writer == nil) NSLog(@"Failed creating media writer: %@", error); NSDictionary *videoSettings = @{ AVVideoCodecKey: AVVideoCodecTypeH264, AVVideoWidthKey: @(width), AVVideoHeightKey: @(height), AVVideoCompressionPropertiesKey: @{ AVVideoAverageBitRateKey: @(bitrate), AVVideoMaxKeyFrameIntervalKey: @(keyframeInterval), } }; recorder->video = [AVAssetWriterInput assetWriterInputWithMediaType:AVMediaTypeVideo outputSettings:videoSettings]; if (recorder->video == nil) NSLog(@"Failed creating video writer input"); recorder->video.expectsMediaDataInRealTime = true; NSDictionary* videoSource = [NSDictionary dictionaryWithObjectsAndKeys: [NSNumber numberWithInt:kCVPixelFormatType_32ARGB], kCVPixelBufferPixelFormatTypeKey, [NSNumber numberWithInt:width], kCVPixelBufferWidthKey, [NSNumber numberWithInt:height], kCVPixelBufferHeightKey, nil]; recorder->videoAdaptor = [AVAssetWriterInputPixelBufferAdaptor assetWriterInputPixelBufferAdaptorWithAssetWriterInput:recorder->video sourcePixelBufferAttributes:videoSource]; if (recorder->videoAdaptor == nil) NSLog(@"Failed creating video adaptor"); if ([recorder->writer canAddInput:recorder->video]) [recorder->writer addInput:recorder->video]; else NSLog(@"Could not add video input to writer"); if (sampleRate > 0 && channelCount > 0) { AudioChannelLayout layout = { .mChannelLayoutTag = channelCount == 1 ? kAudioChannelLayoutTag_Mono : kAudioChannelLayoutTag_Stereo, .mChannelBitmap = 0, .mNumberChannelDescriptions = 0 }; NSDictionary* audioOutputSettings = @{ AVFormatIDKey: @(kAudioFormatMPEG4AAC), AVNumberOfChannelsKey: @(channelCount), AVSampleRateKey: @(sampleRate), AVEncoderBitRateKey: @128000, AVChannelLayoutKey: [NSData dataWithBytes:&layout length:sizeof(layout)] }; recorder->audio = [AVAssetWriterInput assetWriterInputWithMediaType:AVMediaTypeAudio outputSettings:audioOutputSettings]; if (!recorder->audio) NSLog(@"Failed creating audio adaptor"); recorder->audio.expectsMediaDataInRealTime = true; AudioStreamBasicDescription audioStreamDesc = { .mSampleRate = sampleRate, .mFormatID = kAudioFormatLinearPCM, .mFormatFlags = kAudioFormatFlagIsPacked | kAudioFormatFlagIsFloat, .mBytesPerPacket = channelCount * sizeof(float), .mFramesPerPacket = 1, .mBytesPerFrame = channelCount * sizeof(float), .mChannelsPerFrame = channelCount, .mBitsPerChannel = sizeof(float) * 8, }; OSStatus status = CMAudioFormatDescriptionCreate(kCFAllocatorDefault, &audioStreamDesc, sizeof(layout), &layout, 0, nil, nil, &recorder->audioDesc); if (status) NSLog(@"Failed creating audio format description: %d", (int)status); if ([recorder->writer canAddInput:recorder->audio]) [recorder->writer addInput:recorder->audio]; else NSLog(@"Could not add audio input to writer"); } if (![recorder->writer startWriting]) NSLog(@"Could not start writing: %@", recorder->writer.error); [recorder->writer startSessionAtSourceTime:kCMTimeZero]; NSLog(@"Recording started to %s", recordingPath); return recorder; }

I'm trying to do some realtime audio processing on audio served from an HLS stream (i.e. an AVPlayer created using an M3U HTTP URL). It doesn't seem like attaching an AVAudioMix configured with with an `audioTapProcessor` has any effect; none of the callbacks except `init` are being invoked. Is this a known limitation? If so, is this documented somewhere?If the above is a limitation, what are my options using some of the other audio APIs? I looked into `AVAudioEngine` as well but it doesn't seem like there's any way I can configure any of the input node types to use an HLS stream. Am I wrong? Are there lower level APIs available to play HLS streams that provide the necessary hooks?Alternatively, is there some generic way to tap into all audio being output by my app regardless of its source?Thanks a lot!

I am prototyping an iOS accessibility audio application for people with unilateral hearing loss. The goal is simple. Capture environmental audio using the AirPod on the poor hearing side and route that audio with very low latency into the AirPod on the working hearing side. The core concept is already working on physical AirPods and an iPhone. Our desired signal path is Right AirPod microphone → iPhone audio processing → Left AirPod output The user sets the AirPods microphone in Settings to Always Right AirPod. The app then captures that Bluetooth microphone and routes the signal into the left output channel. Using AVAudioSession and AVAudioEngine we have successfully achieved low latency cross ear audio. The main issue is native AirPods Transparency. When the app activates the AirPods Bluetooth microphone using HFP, the transferred audio continues working correctly, but native Transparency audio on the receiving AirPod effectively disappears. Interestingly, iOS still reports Transparency as enabled in Control Center and AirPods settings. This means the user can hear audio transferred from the poor hearing side, but their working ear loses much of the normal environmental sound that Transparency previously provided. We have tested several configurations. Normal Bluetooth HFP with playAndRecord This provides the best result so far. The AirPods microphone signal is strong. The output route exposes two channels. We can route the microphone signal only to the opposite AirPod. Latency can be reduced enough that conversation feels nearly real time. However, native Transparency on the receiving AirPod effectively stops providing environmental audio. bluetoothHighQualityRecording Microphone quality is noticeably better. However, latency is significantly higher and produces an audible delayed or echo effect during conversation. Transparency has the same general issue. multiRoute with dualRoute This allows the iPhone audio hardware and AirPods to operate simultaneously. It appears to preserve more ambient awareness on the working side. However, the AirPods microphone becomes substantially weaker when used as the secondary Bluetooth HFP input. We measured the incoming AirPods microphone signal at roughly minus 40 dB during normal speech testing. Adding 12 to 18 dB of software gain increases distortion without materially improving intelligibility. farFieldInput with dualRoute We tested the raw AirPods microphone with and without farFieldInput. The microphone levels and practical pickup were very similar. Far field speech processing improved intelligibility somewhat, but did not solve the weak secondary Bluetooth input signal. Our main technical question is Is there a supported AVAudioSession configuration, Core Audio API, AirPods API, or entitlement that allows a third party application to capture an AirPods microphone while preserving the AirPods native Transparency processing on the output AirPod? Ideally we want Right AirPod microphone capture plus native Transparency on the left AirPod plus application generated right to left audio mixed into the left AirPod all operating simultaneously. We do not need access to Apple's Transparency microphone signal itself if native Transparency can simply remain active while our application audio is mixed into the receiving AirPod. If this is not currently possible using public APIs, is this an intentional platform limitation of the AirPods Bluetooth microphone route? We would also appreciate guidance on whether there is another recommended architecture for this accessibility use case. The low latency cross ear routing itself works surprisingly well. Preserving natural environmental audio in the user's working ear while the Bluetooth microphone is active is currently the main technical blocker. Testing has been performed on a physical iPhone running iOS 26.x using Xcode 26.6 and current AirPods hardware, not the Simulator. Thank you for any guidance.