I'm developing an app that plays a WAV file through the Lightning headphone adapter. When i connect the adapter, a prompt appears asking whether to select "Headphones" or "Other Device" What does this setting actually do? I've noticed that it affects the maximum amplitude (volume) of the WAV output. Could you explain the precise difference between these two modes?

We are experiencing an issue with our HLS MPEG-TS streams on Apple devices, where the AVPlayer in our iOS app and Safari jumps back to the start when the player automatically changes quality. This occurs despite the stream still indicating that it is live and there is no change in the seekbar. After testing our streams with the Apple HLS Validator, the only problem that occured was an "Measured peak bitrate compared to multivariant playlist declared value exceeds error tolerance"-Error. On Chrome and on our Android-App this playback bug does not happen. Has someone else experienced similar issues with the AVPlayer?

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 }

Hello! The new lower latency support for AirPods in Game Mode is impressive, but I'm not sure of the best way to handle the transition into/out of Game Mode while audio is playing. In order to lower the latency, the system appears to drop some number of samples, with the result being a good deal less latency. My use case is macOS where it's easier to switch in/out of the fullscreen game (a simple swipe left), thus causing more issues for Game Mode since the audio is playing the entire time. It would be nice if offscreen games could remain in game mode, but I understand not wanting to give developers that control. Are there any best practices for avoiding or masking the audio glitch caused by this skip-ahead? Is there a system event I can receive to know when Game Mode is about to be enabled or disabled, where I could perhaps fade out the audio? My callback checks the inTimestamp->mSampleTime value to detect gaps, but it only rarely detects a Game Mode gap, even though the audio skip-ahead always happens. BTW, I am currently only developing on macOS (15.0) and I'm working at a low level with AudioUnit callbacks and a SpatialMixer. I am not currently using any higher-level audio APIs. And here's a few questions I don't necessarily expect answers to, but it doesn't hurt to ask: Is there any additional technical details about how this latency reduction works, or exactly how much of a reduction is achieved (or said another way, how many samples are dropped)? How much does this affect AirPods battery life? And finally, is there a way to query the actual latency value? I check the value for kAudioDevicePropertyLatency but it seems to always report 160ms for AirPods. Thanks!

[[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

Hello, Using ShazamKit, based on a shazam catalog result, would it be possible to detect the audio-recorded FPS (speed)? I'm thinking that the shazam catalog which was created from an audio file can be used to compare the speed of a live recorded audio. Thank you!

Title: Unable to Access Microphone in Control Center Widget – Is It Possible? Hello everyone, I'm attempting to create a widget in the Control Center that accesses the microphone, similar to how Shazam does it. However, I'm running into an issue where the widget always prints "Microphone permission denied." It's worth mentioning that microphone access works fine when I'm using the app itself. Here's the code I'm using in the widget: swift Copy code func startRecording() async { logger.info("Starting recording...") print("Starting recording...") recognizedText = "" isFinishingRecognition = false // First, check speech recognition authorization let speechAuthStatus = await withCheckedContinuation { continuation in SFSpeechRecognizer.requestAuthorization { status in continuation.resume(returning: status) } } guard speechAuthStatus == .authorized else { logger.error("Speech recognition not authorized") return } // Then, request microphone permission using our manager let micPermission = await AudioSessionManager.shared.requestMicrophonePermission() guard micPermission else { logger.error("Microphone permission denied") print("Microphone permission denied") return } // Continue with recording... } Issues: The code consistently prints "Microphone permission denied" when run from the widget. Microphone access works without issues when the same code is executed from within the app. Questions: Is it possible for a Control Center widget to access the microphone? If yes, what might be causing the "Microphone permission denied" error in the widget? Are there additional permissions or configurations required to enable microphone access in a widget? Any insights or suggestions would be greatly appreciated! Thank you.

Hey, I am fairly new to working with AVFoundation etc. As far as I could research on my own, if I want to get metadata from let's say a .m4a audio file, I have to get the data and then create an AVAsset. My files are all on local servers and therefore I would not be able to just pass in the URL. The extraction of the metadata works fine - however those AVAssets create a huge overhead in storage consumption. To my knowledge the data instances of each audio file and AVAsset should only live inside the function I call to extract the metadata, however those data/AVAsset instances still live on on storage as I can clearly see that the app's file size increases by multiple Gigabytes (equal to the library size I test with). However, the only data that I purposefully save with SwiftData is the album artwork. Is this normal behavior for AVAssets or am I missing some detail? PS. If I forgot to mention something important, please ask. This is my first ever post, so I'm not too sure what is worth mentioning. Thank you in advance! Denis

Hi, May I ask if there is any iOS API or similar way to switch between the transparency and ANC modes of AirPods Pro 2? I know there is one way to configure and activate the shortcut in the APP, which requires an inconvenient manual setting. May I ask for any other advice? Thx in advance!

I'm building a custom camera screen that displays the camera image on a preview layer and then captures an image, using AVCaptureSession. When the picture is captured, I immediately load it into a UIImageView in order to display it to the user for approval. I've actually done this many times before, but this is the first time I've tried to do it in an app that supports interface rotation. If I hold the phone in Portrait mode and capture a picture, everything works as expected. When the user rotates the phone into Landscape orientation, I detect this and I replace the preview layer (AVCaptureVideoPreviewLayer) with a new one, specifying connection.videoRotationAngle in order to make the image appear in the right orientation. I'm a little surprised that this is necessary, and it's not a smooth transition, but that doesn't matter. What does matter is that when I capture the image, it is in the wrong orientation. I tried rotating it myself, but this doesn't seem to make any difference. What am I doing wrong?

I can't find any way to search for a song by title only. You can search for songs, but any term you provide appears to be applied to any metadata associated with the song. Look at the largely nonsensical results when I search for a song with the letters "de": In many cases, that string doesn't appear anywhere. I used MusicCatalogSearchRequest(term: searchTerm, types: [Song.self]) Likewise it stands to reason that people want to search for artist and album names using text strings. How do we do that?

Hi I'm trying to stream a H264 video feed that is coming from a uniview IP camera in a browser however the stream is just not displaying. Either I get a single frame or just a black screen. I get the same issues on safari on the mac or any browser on an iphone. However the video stream works just fine using hls.js in Windows or on Android. We are grabbing the the RTSP stream from the camera and using ngix to serve the .m3u8 url. However even if we save the stream to a file and try an play it on the iphone it has the same issue (unless we use a separate media player like VLC). I know if we use ffmpeg to reencode as H264 rather than copy it the it will play. My guess there is an incompatibility between how uniview encode the video and what apple can accept. I've asked uniview and they are not sure what the problem is either. Is there a way to get more debug information on why a particular HLS stream is failing in safari on mac or iPhone.

My app is not a VOIP application. I use devices that support character centering, such as iPad 10 or iPad 13.18. The system is iOS 18.0, 18.1, or 18.1.1. When entering live classes, the "Character Centering" button does not appear in the control center, as shown in the following picture. However, if Voice over IP is selected for Background Modes in the project and the app is run again, it will not be reproduced, even if it is uninstalled or reinstalled. Could you please help me investigate the reason? thank you!

I’m working on an iOS app for a client, and I have a question regarding a specific feature we're looking to implement. We want the app to respond to a user pressing the volume button three times while the app is in the background. The goal is to allow users to discreetly trigger a safety feature without drawing attention, particularly in situations where they may be in danger or at risk. This feature is critical for the app and would be a valuable addition, as it could potentially help protect users in emergency situations. However, I haven’t found much information on whether iOS allows background listening for volume button presses. Therefore, I would greatly appreciate your insights on the following: Is it possible to listen for volume button presses when the app is in the background, or are there system-level restrictions that prevent this? If it's not directly possible, are there any special provisions, APIs, or entitlements that can be requested from Apple to enable this functionality? In case this feature is not supported, are there alternative approaches to achieve a similar discreet activation mechanism? If this is something that requires special permission or a process, could you please guide me on how to proceed? I understand that maintaining user privacy and security is a priority for iOS, and I want to ensure that any implementation fully complies with Apple's guidelines. Thanks in advance for your help!

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

We are working on an app for the vision pro which has high polygons count and lots of high resolution textures. Everything looks smooth and in general very well, The issue is the moment we turn on voice control even if it is not being used the visuals at the center start to stutter left to right. Has anyone seen this ?, it must be a bug, any workaround ? Thanks, Guillermo

I was wondering if anyone could assist with the following query. Apple's Private Relay functionality requires companies to register all email-sending subdomains for the service to function properly. With 26 markets and 3 subdomains per market for one department, and another department with around 20 markets and even more subdomains, the limit of 100 sending domains is exceeded. As a result, we’re unable to register all the domains currently being used to send emails to our customers. Does any have any recommendations to overcome this?

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

Somehow I have a corrupted audio plugin authentication problem. I’m on a silicon Mac M1 and two audio plugins that were installed and working will now not authenticate. The vendors both are unable to troubleshoot and I think the issue is a corrupted low level file. One product authenticates correctly when I created a new user but another plugin only authenticates on the original user account and not on the newly created user. Reinstalling the plugins and the Mac OS does not fix the issue. Any thoughts?

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