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Popping Sound

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Reply to MPNowPlayingInfoCenter nowPlayingInfo throttled
I see this message Application exceeded audio metadata throttle limit. often for one Stream (live URL), and only when the iPhone is connected to CarPlay. My functionality strongly controls how often the App writes to the property MPNowPlayingInfoCenter.nowPlayingInfo (once in 30 seconds). This screenshot shows logs for the flow: 1 Live is playing 2 users tap on the Stop command on the headunit(CarPlay) 3 I see the message Application exceeded audio metadata throttle limit. 4. Then MPRemoteCommandCenter calls my handler (it contains print with remote Command is called) I have tried to use MPNowPlayingSession, and use a session's remoteCommandCenter, nowPlayingInfoCenter... but the session does not resolve this issue. Often, I see this message even before my app sets any data to MPNowPlayingInfoCenter.nowPlayingInfo (I described this case above). Sometimes I can see a set of these messages (3-6 records). Do you know how to resolve this critical issue? What does Application exceeded audio
Topic: Media Technologies SubTopic: Audio Tags:
Jul ’25
occasional glitches and empty buffers when using AudioFileStream + AVAudioConverter
I'm streaming mp3 audio data using URLSession/AudioFileStream/AVAudioConverter and getting occasional silent buffers and glitches (little bleeps and whoops as opposed to clicks). The issues are present in an offline test, so this isn't an issue of underruns. Doing some buffering on the input coming from the URLSession (URLSessionDataTask) reduces the glitches/silent buffers to rather infrequent, but they do still happen occasionally. var bufferedData = Data() func parseBytes(data: Data) { bufferedData.append(data) // ***: this buffering reduces glitching // to rather infrequent. But why? if bufferedData.count > 32768 { bufferedData.withUnsafeBytes { (bytes: UnsafeRawBufferPointer) in guard let baseAddress = bytes.baseAddress else { return } let result = AudioFileStreamParseBytes(audioStream!, UInt32(bufferedData.count), baseAddress, []) if result != noErr { print(❌ error parsing stream: (result)) } } bufferedData = Data() } } No errors are returned by AudioFileStream or AVAudioConverter. func hand
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Jul ’25
Reply to Ventura Hack for FireWire Core Audio Support on Supported MacBook Pro and others...
I have been trying this procedure on a brand new 2023 MacBook Pro M3 with Sonoma 14.1, and when I try to install the AppleFWAudio pkg, it still gives me a pop-up that it can't be installed because it's from an unknown developer. Am I missing something with that install? When I try the next step (sudo chown ... ) in terminal (in either normal or recovery mode) it says it file doesn't exist. Really hoping I can get this figured out. I have a Mackie 1620 that I enjoy using for drums, and I need the 8 channels. Thanks for any help!
Topic: Media Technologies SubTopic: General Tags:
Jul ’25
Reply to Notifications not working
You're in the wrong place. These are the Developer Forums, where developers of apps for Apple's platforms ask each other for hints and tips on coding. We're just random people from around the world; we aren't Apple employees. Your question is more of a product support one, so I'd suggest you ask it over at the Apple Support Forums. Thanks. When you ask your question, try to provide more information such as which apps do and do not give a sound; show your sound & haptics settings; show your mute switch setting etc. All that information would be important to pin it down. If you find that there is a bug, you can raise it at: https://feedbackassistant.apple.com/
Jul ’25
Notifications not working
I’m receiving notifications from all third-party apps that I use however, most of the time there is no sound or haptics with the notification. In some cases, very seldomly I will receive a sound when a notification comes in, but that’s only with one of the many third-party apps that I use. I’ve spoken to Apple about this when this whole problem started during an update that you guys rolled out sometime between September and November 2024. They blamed it on the app programmers but I think at this point we all know that it’s Apple’s inability to accept that the problem is on their end. I never had problems receiving notifications from any of the apps prior to that. I guess my question is will Apple ever fix this or are they going to sweep it under the rug and pretend like it doesn’t exist?
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Jul ’25
Issue with Azure Entra External ID and Apple ID Federation – "invalid_request invalid web redirect url"
I'm currently coding an application using Azure Entra External ID (B2C) with User Flows and multiple identity providers configured. So far, I’ve successfully linked Microsoft, Google, and Facebook. However, when configuring Apple as an identity provider, the User Flow fails with the following error: invalid_request invalid web redirect url Following the Microsoft Learn guide (https://learn.microsoft.com/en-us/entra/external-id/customers/how-to-apple-federation-customers), I completed the following: Create an Apple application Sign in to the Apple Developer Portal with your account credentials. From the menu, select Certificates, IDs, & Profiles, and then select (+). In the Register a New Identifier section, select App IDs, and then select Continue. For Select a type, select App, and then select Continue. To Register your App ID: Enter a Description. Enter the Bundle ID, such as com.contoso.azure-ad. Explicit naming such as com.myappdomain.myappname recommended. For Capabilities, select Sign in with Apple
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Jul ’25
Reply to Running out of space with macOS Tahoe Developer Beta.
Hello, Beta releases may take additional disk space to help with testing and bug reporting. macOS Tahoe is also expected to take more space with respect to the UI updates. That said, it sounds like you've get more house cleaning to do or need to consider restoring shipping software. Disk space is a hard limit. If you chose to make more disk space available please take a moment to report this issue with the Feedback Assistant.
Jul ’25
Reply to File/Folder access/scoping for background only apps
So the System was not popping up Do you want to provide access to the Desktop etc folder etc. in this condition to the Standard User. Where did the Message/Window to confirm access to the folder vanish to? There are more questions on this below, but I suspect what's going on here is you have two plugin instances (because Photoshop is running as a separate process in the two different login sessions) which are both talking to the same background process. I don't know how you ended up in that state, but it's impossible for the same process to work in different login sessions. The moment the Admin User was physically logged off the Mac, everything started working for the Standard User even under Screen Sharing. This makes us wonder if this is an edge case macOS bug? No, I don't think this is a macOS bug. Questions I need answered here are these: How are you doing this? Is the background app a launch agent or something else? Also, what exactly is your background app? Is it a true (presumably faceless) ap
Topic: App & System Services SubTopic: Core OS Tags:
Jul ’25
Reply to Using Past Versions of Foundation Models As They Progress
Hi J, Thanks for the reply. A little more info: In my specific case, I am indeed using guided generation already (which helped a lot in seed 1 and 2). I thought the eval session was great. I've been working with LLMs for a bit now and it's awesome to have a whole WWDC session to talk about evals and expose them to devs who may not have seen them before. This is coming up for me now because something changed in seed 3 where my feature went from a ~95% success rate to a 0% success rate, all failing with guardrails errors that did not trigger in the first two seeds. There are a bunch of other threads here on the topic and I've filed several feedbacks on the specifics already. Maybe that's a bug/unexpected outcome and we'll see a future seed restore the behavior. I hope so, I'd like to ship this feature. But if not, at least I won't have sent it to customers. My real concern is that in a future point release where the amount of feedback time is compressed and IMO it's very hard to get specific issues in front of
Jul ’25
Reply to File/Folder access/scoping for background only apps
First of all, thank you for the answers. We went back and figured exactly what was occurring and the condition. Everything we did when I posted my original message was on a newly setup M4 Pro Mac with 15.5 as we like to test things continuously. To investigate further we setup a VM with the same conditions Admin user/Standard user. On the VM everything was working under the Standard user account wherein the System did pop up message saying Do you wish to grant ABCD access to the Desktop or Downloads etc folder. We grant access and our plug-ins work as expected. We went back to the actual M4 Pro machine and understood exactly what was occurring. The Admin user was Physically logged into the system though the GUI was not in use. But the Standard User for testing purposes was logging in via Screen Sharing to the M4 Pro Mac. So the System was not popping up Do you want to provide access to the Desktop etc folder etc. in this condition to the Standard User. Where did the Message/Window to confirm
Topic: App & System Services SubTopic: Core OS Tags:
Jul ’25
Missing entitlement com.apple.developer.system-extension.install
Hi I am building obs studio using cmake and Xcode. I used cmake --preset macos -DOBS_CODESIGN_IDENTITY= to generate the build folder and inside X code used Provisioning Profile with Developer ID Application certification. The build was generated successfully but when I tried to turn on the virtual camera I see missing Missing entitlement com.apple.developer.system-extension.install error. (My Provisioning profile has System Extension Capability checked on apple developer portal) If I use this flow instead: cmake --preset macos -DOBS_CODESIGN_TEAM=63B5A5WDNG Build using Xcode with Automatic manage signing with Apple Developer Certificate. Obs studio builds successfully and Virtual camera extension also works fine. My primary goal is to notarise my app which contains OBS studio and Blackhole Audio driver for distribution outside app store. If I try to sign my obs app generated in second step codesign --deep --force --timestamp --verify --verbose --options runtime --sign Developer ID Application:*** OB
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Jul ’25
CallKit UI with speaker button is not functional - Only speaker mode is enabled
An issue with the CallKit UI, specifically regarding the functionality of the speaker button. When a user initiates a video call with CallKit and then, using the existing CallKit session, initiates an audio call, there are no issues with CallKit or the audio. However, if the user terminates the video call from the CallKit UI, the active CallKit session ends. To resume the ongoing audio call, we report a new CallKit call upon the end call trigger. While there are no issues with this reporting, the CallKit UI does not provide an audio route for the built-in receiver, and the speaker button remains unresponsive. IPA was build on SDK 18 and running on iOS beta 26. Issue is NOT seen with SDK18 and running iOS 18.x or lower devices. Feedback - FB18855566
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Jul ’25
Reply to Unable to pair xcode with vision pro
Hello, It sounds like you've followed the correct steps to connect your Vision Pro in developer mode. Note that enabling Developer Mode typically requires rebooting the Vision Pro so be sure to do that. Likewise, to err on the side of caution, try rebooting the Mac and restarting Xcode. If you're still having issues send us a bug report with a sysdiagnose (Mac and Vision Pro) taken when you attempt to build and deploy your app from Xcode. You may also want to consider purchasing a developer strap for a USB-C connection to the Mac.
Jul ’25
UIDocumentPickerViewController in Audiounit Extension unable to receive touches
Hello, I have an existing AUv3 instrument plugin. In the plug in, users can access files (audio files, song projects) via a UIDocumentPickerViewController In Logic Pro, (and some other hosts, but not all), the document picker is unable to receive touches, while a keyboard case is attached to the iPad. Removing the case (this is an Apple brand iPad case) allows the interactions to resume and allows me to pick files in the usual way. One of my users reports this non-responsive behavior occurs even after disconnecting their keyboard. I have fiddled with entitlements all day, and have determined that is not the issue, since the keyboard disconnection appears to fix it every time for me. Here is my, very boilerplate, presentation code : guard let type = UTType(com.my.type) else { return } let fileBrowser = UIDocumentPickerViewController(forOpeningContentTypes: [type]) fileBrowser.overrideUserInterfaceStyle = .dark fileBrowser.delegate = self fileBrowser.directoryURL = myFileFolderURL() self.present(fileBr
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Jul ’25
Using Past Versions of Foundation Models As They Progress
Has Apple made any commitment to versioning the Foundation Models on device? What if you build a feature that works great on 26.0 but they change the model or guardrails in 26.1 and it breaks your feature, is your only recourse filing Feedback or pulling the feature from the app? Will there be a way to specify a model version like in all of the server based LLM provider APIs? If not, sounds risky to build on.
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Jul ’25