Turn on address sanitizer on Xcode and use a real device and put a Test.mp3 file in the Xcode project. Then it will crash when you initialise a AVAudioPlayer with a mp3 file (with a wav file it works fine). I have made an entry in feedback assistent -> FB12425453. var player : AVAudioPlayer? func playSound() { if let url = Bundle.main.url(forResource: "Test", withExtension: "mp3") { self.player = try? AVAudioPlayer(contentsOf: url) // --> deallocation of non allocated memory problem --> with a "wav" file it works .... } }

How can i record an audio when the app is in background? I tried on android and its working but on IOS its only recording on the foreground Its an Expo app and am using Expo Av library I have already allowed the permissions and set the UIBackgroundModes with audio "infoPlist": { ... "UIBackgroundModes": [ "audio" ] } And in the code also await Audio.setAudioModeAsync({ allowsRecordingIOS: true, playsInSilentModeIOS: true, staysActiveInBackground:true }); but once the app is in background mode it is failing to start recording. Can anyone help me how I can fix this ?

I am writing a watchOS app where I have some audio files that I want to play at various points. I am using AVAudioPlayer. It all works in the simulator and it also works if I have Air Pods connected to my watch via Bluetooth. However I get no sound if there isn't a paired set of earphones. In the case of no earphones I would like the sounds to play from the physical watch speaker. I can't seem to find any documentation on how to cause that to happen. Any hints or tips are appreciated.

Hello, I have struggled to resolve issue above question. I could speak utterance when I turn on my iPhone, but when my iPhone goes to background mode(turn off iPhone), It doesn't speak any more. I think it is possible to play audio or speak utterance because I can play music on background status in youtube. Any help please??

I'm developing webview app with using javascript with IONIC. When I try to add worklet module, It looks fine but after add module, and then when I try to connect audioWorkletprocessor with audioContext. IOS give me error description like this. `2023-07-24 11:35:57.436444+0900 CHeKT[27066:10627891] [assertion] Error acquiring assertion: <Error Domain=RBSServiceErrorDomain Code=1 "(originator doesn't have entitlement com.apple.runningboard.assertions.webkit AND originator doesn't have entitlement com.apple.multitasking.systemappassertions)" UserInfo={NSLocalizedFailureReason=(originator doesn't have entitlement com.apple.runningboard.assertions.webkit AND originator doesn't have entitlement com.apple.multitasking.systemappassertions)}> 2023-07-24 11:35:57.436491+0900 CHeKT[27066:10627891] [ProcessSuspension] 0x1060089f0 - ProcessAssertion::acquireSync Failed to acquire RBS assertion 'WebKit Media Playback' for process with PID=27071, error: Error Domain=RBSServiceErrorDomain Code=1 "(originator doesn't have entitlement com.apple.runningboard.assertions.webkit AND originator doesn't have entitlement com.apple.multitasking.systemappassertions)" UserInfo={NSLocalizedFailureReason=(originator doesn't have entitlement com.apple.runningboard.assertions.webkit AND originator doesn't have entitlement com.apple.multitasking.systemappassertions)} 2023-07-24 11:35:57.436947+0900 CHeKT[27066:10627891] [assertion] Error acquiring assertion: <Error Domain=RBSServiceErrorDomain Code=1 "(originator doesn't have entitlement com.apple.runningboard.assertions.webkit AND originator doesn't have entitlement com.apple.multitasking.systemappassertions)" UserInfo={NSLocalizedFailureReason=(originator doesn't have entitlement com.apple.runningboard.assertions.webkit AND originator doesn't have entitlement com.apple.multitasking.systemappassertions)}> 2023-07-24 11:35:57.436980+0900 CHeKT[27066:10627891] [ProcessSuspension] 0x106008ae0 - ProcessAssertion::acquireSync Failed to acquire RBS assertion 'WebKit Media Playback' for process with PID=27066, error: Error Domain=RBSServiceErrorDomain Code=1 "(originator doesn't have entitlement com.apple.runningboard.assertions.webkit AND originator doesn't have entitlement com.apple.multitasking.systemappassertions)" UserInfo={NSLocalizedFailureReason=(originator doesn't have entitlement com.apple.runningboard.assertions.webkit AND originator doesn't have entitlement com.apple.multitasking.systemappassertions)} 2023-07-24 11:35:57.437323+0900 CHeKT[27066:10627891] [assertion] Error acquiring assertion: <Error Domain=RBSServiceErrorDomain Code=1 "(originator doesn't have entitlement com.apple.runningboard.assertions.webkit AND originator doesn't have entitlement com.apple.multitasking.systemappassertions)" UserInfo={NSLocalizedFailureReason=(originator doesn't have entitlement com.apple.runningboard.assertions.webkit AND originator doesn't have entitlement com.apple.multitasking.systemappassertions)}> 2023-07-24 11:35:57.437354+0900 CHeKT[27066:10627891] [ProcessSuspension] 0x106008bd0 - ProcessAssertion::acquireSync Failed to acquire RBS assertion 'WebKit Media Playback' for process with PID=27072, error: Error Domain=RBSServiceErrorDomain Code=1 "(originator doesn't have entitlement com.apple.runningboard.assertions.webkit AND originator doesn't have entitlement com.apple.multitasking.systemappassertions)" UserInfo={NSLocalizedFailureReason=(originator doesn't have entitlement com.apple.runningboard.assertions.webkit AND originator doesn't have entitlement com.apple.multitasking.systemappassertions)}` even gives me that error. audioWorkletProcessor is working, but when I try to access microphone with getUserMedia() method, audioWorkletProcessor sound is broke like robot sound. audioWorklet is not working with IOS? I need to develop 2way audio using with audioWorklet. but It is not possible to make 2way audio in IOS (Android is working well) Please let me know if you have any feedback or solutions. Thanks. Bobby.

Problem Description This HLS video https://lf3-vod-cdn-tos.douyinstatic.com/obj/vodsass/hls/main.m3u8 starts with noise at 22 seconds play directly on MacOS 12.6.6 Safari，and it also appears on iOS (16.5.1) safari. But there is no noise when playing with MSE on Mac by the third-party open source web playe such as hls.js on Safari. Test tool hls.js test demo: https://hlsjs.video-dev.org/demo/

Could you provide guidance on how to add chapter marks to an M4A. I've been attempting bookmark. From what I've read, it requires the use of AVMetadataKey.quickTimeUserDataKeyChapter track.addTrackAssociation(to: ... type: .chapterList) or both. I've looked into AVTimedMetadataGroup but I havent found a way to get it added based on the documentation. I also havent found anyone who has used native Swift to add chapter marks. They've always given in and used ffmpeg or some other external solution. inputURL is for the file that is being read in outputURL is for the the final file chapters is an array of dictionaries, where time is the start of each chapter and its name in the list The target is macOS import AVFoundation class AudioChapterCreator { // Function to create an audio file with chapters and a chapter list func createAudioFileWithChapters(inputURL: URL, outputURL: URL, chapters: [(time: CMTime, title: String)]) { let options = [AVURLAssetPreferPreciseDurationAndTimingKey: true] let asset = AVURLAsset(url: inputURL, options: options) let durationInSeconds = CMTimeGetSeconds(asset.duration) print("asset durationInSeconds: \(durationInSeconds)") guard let audioTrack = asset.tracks(withMediaType: .audio).first else { print("Error: Unable to find audio track in the asset.") return } // Create metadata items for chapters let chapterMetadataItems = chapters.map { chapter -> AVMetadataItem in let item = AVMutableMetadataItem() // this duration is just for testing let tempDur = CMTime(seconds: 100, preferredTimescale: 1) item.keySpace = AVMetadataKeySpace.quickTimeUserData item.key = AVMetadataKey.quickTimeUserDataKeyChapter as NSString item.value = chapter.title as NSString item.time = chapter.time item.duration = tempDur return item } // Create an AVAssetExportSession for writing the output file guard let exportSession = AVAssetExportSession(asset: asset, presetName: AVAssetExportPresetAppleM4A) else { print("Error: Unable to create AVAssetExportSession.") return } // Configure the AVAssetExportSession exportSession.outputFileType = .m4a exportSession.outputURL = outputURL exportSession.metadata = asset.metadata + chapterMetadataItems exportSession.timeRange = CMTimeRangeMake(start: CMTime.zero, duration: asset.duration); // Export the audio file exportSession.exportAsynchronously { switch exportSession.status { case .completed: print("Audio file with chapters and chapter list created successfully.") case .failed: print("Error: Failed to create the audio file.") case .cancelled: print("Export cancelled.") default: print("Export failed with unknown status.") } } } }

Whenever I try to make a playlist with a lot of songs all at once, I'll get to a point it almost freezes. Like how after I click add to playlist for each song a notice comes up saying "song added", but it will stop doing that and the song won't show up on the playlist. Then maybe 2 or 3 minutes later it will show the notice the song has been added. Anyone else dealing with this? Frustrating when I'm trying to do big playlists and I have to come back to it the next day to add the rest.

Hello developers, we have an issue with opening an Apple MPEG-4 audio file that apparently has a correct header but then no actual audio data. This file is 594 bytes and freezes completely the app's main thread and never returns from either of these calls: NSURL *fileURL = [NSURL fileURLWithPath:filePath]; NSError *error; AVAudioPlayer *audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:fileURL error:&error]; // freez (call stack below) AVAudioFile *audioFile = [[AVAudioFile alloc] initForReading:fileURL error:&error]; // freez AudioFileID audioFileID; OSStatus result = AudioFileOpenURL((__bridge CFURLRef)fileURL, kAudioFileReadPermission, 0, &audioFileID); // freez Putting the debugger in pause reveals where it is stuck: #0 0x00007ff81b7683f9 in MP4BoxParser_Track::GetSampleTableBox() () #1 0x00007ff81b76785a in MP4BoxParser_Track::GetInfoFromTrackSubBoxes() () #2 0x00007ff81b93fde5 in MP4AudioFile::UseAudioTrack(void*, unsigned int, unsigned int) () #3 0x00007ff81b93ab2c in MP4AudioFile::OpenFromDataSource() () #4 0x00007ff81b72ee85 in AudioFileObject::Open(__CFURL const*, signed char, int) () #5 0x00007ff81b72ed9d in AudioFileObject::DoOpen(__CFURL const*, signed char, int) () #6 0x00007ff81b72e1f0 in AudioFileOpenURL () #7 0x00007ffa382e8183 in -[AVAudioPlayer initWithContentsOfURL:fileTypeHint:error:] () With either of 3 calls the call stack is a little bit different but all in the end get stuck forever in MP4BoxParser_Track::GetSampleTableBox() I'm attaching the incriminated audio file to the post (just rename it back to .m4a): Audio_21072023_10462282.crash How can we avoid this and verify that an audio file is openable and playable. Before, we were checking if a file that we belive be an audio contains data inside, if true then we create AVAudioPlayer with it and see if it return no errors and if the duration is >0. This bug breaks this fondamental logic and now we added a hotfix hack to check if the data is at least 600 bytes long. How do we correctly solve this if none of the methods above return any error but instead ALL hang?

I have the Flutter mobile app and I'm using the record flutter package for recording audio. So I'm facing an issue while recording the audio while the phone is locked. App Behavior: First we start the app and connect it to a Bluetooth device Then the app starts looking for the trigger of 1 from the device connected with it. On receiving the trigger from device it start recording. while mobile locked and app is running in background. AVAudioSession_iOS.mm:2367 Failed to set category, error: '!int' Failed to set up audio session: Error Domain=NSOSStatusErrorDomain Code=560557684 "(null)" I'm getting this error when AVAudioSession setting the category. My is for Users security purpose so it need to record background let me know how can I achive this functionality

For iPhone 14 pro, mic icon remains active on dynamic island. Every time restart is required to make it disappear. After restarting after few number of phone call, it again remains active on dynamic island.

Planning to create a Music Game App similar to Guitar Hero kind of, and I am planning to use songs from beginner producers (They don't have any Publishers or Distributors). If I get their legal concent through a contract to use their songs, does Apple allow to have Music that is not from Itunes if I get the legal license from the producer to use their songs in my app? Will apple allow songs that don't have Publishers or Distributors, or in the App review stage they will flag it and cause an issue for me?

I'm experiencing a lot of crackling sounds when watching a video or listening to music on my Macbook. I see a lot of issues but without a solution for it. So my question to Apple is: HOW TO FIX THIS?

I try to match a microphone audio with a custom catalog which I created via ShazamKit. What is the code for extracting and displaying "matchedMediaItem.artist" information on my iPhone screen after finding a song match with an entry of my custom-built catalog? I am a beginner.

Using the OC framework AVFAudio, obtain PCM data for the 32-bit microphone of the device, and the results obtained are all between -1 and 1 (the actual value of the fixed noise source has exceeded 100 decibels). According to the conversion results, it cannot exceed 100 decibels (20 * log10 (PCM/0.00002)). Do you know what the reason or problem is? Output： -0.82569194 -0.82774025 -0.83398014 -0.87197787 -0.90468484 -0.9037836 0.9085202

I've noticed that enabling voice processing on AVAudioInputNode change the node's format - most noticeably channel count. let inputNode = avEngine.inputNode print("Format #1: \(inputNode.outputFormat(forBus: 0))") // Format #1: <AVAudioFormat 0x600002bb4be0:  1 ch,  44100 Hz, Float32> try! inputNode.setVoiceProcessingEnabled(true) print("Format #2: \(inputNode.outputFormat(forBus: 0))") // Format #2: <AVAudioFormat 0x600002b18f50:  3 ch,  44100 Hz, Float32, deinterleaved> Is this expected? How can I interpret these channels? My input device is an aggregate device where each channel comes from a different microphone. I then record each channels to separate files. But when voice processing messes up with the channels layout, I cannot rely on this anymore.

I am experiencing an issue where my Mac's speakers will crackle and pop when running an app on the Simulator or even when previewing SwiftUI with Live Preview. I am using a 16" MacBook Pro (i9) and I'm running Xcode 12.2 on Big Sur (11.0.1). Killing coreaudiod temporarily fixes the problem however this is not much of a solution. Is anyone else having this problem?

Hi, I have multiple audio files I want to decide which channel goes to which output. For example, how to route four 2-channel audio files to an 8-channel output. Also If I have an AVAudioPlayerNode playing a 2-channel track through headphones, can I flip the channels on the output for playback, i.e flip left and right? I have read the following thread which seeks to do something similar, but it is from 2012 and I do not quite understand how it would work in modern day. Many thanks, I am a bit stumped.

An error is reported when playing h5 audio or video elements in wkwebview: Error acquiring assertion: Error Domain=RBSAssertionErrorDomain Code=3 "Required client entitlement is missing" UserInfo={RBSAssertionAttribute=RBSDomainAttribute| domain:"com.apple.webkit" name:"MediaPlayback" sourceEnvironment:"(null)", NSLocalizedFailureReason=Required client entitlement is missing} Then the performance of the webview will become very poor. There is an audio element and a button button in my HTML file. Click the button to play audio. body button onclick="handleClick()"PLAY/button audio id="audio" src="https://ac-dev.oss-cn-hangzhou.aliyuncs.com/test-2022-music.mp3"/audio script function handleClick() { document.getElementById("audio").play(); } /script /body Create a wkwebview to load the html file in my demo APP. class ViewController: UIViewController , WKUIDelegate{ var webView: WKWebView! override func loadView() { let config = WKWebViewConfiguration() config.preferences.javaScriptEnabled = true config.allowsInlineMediaPlayback = true webView = WKWebView(frame: .zero, configuration: config) //.zero webView.uiDelegate = self view = webView } override func viewDidLoad() { super.viewDidLoad() let myURL = URL(string: "https://ac-dev.oss-cn-hangzhou.aliyuncs.com/test-2022-py.html") let myRequest = URLRequest(url: myURL!) webView.load(myRequest) } } Click the button in the HTML to play the audio, and you can see the error report on the xcode. iPadN[2133:855729] [assertion] Error acquiring assertion: Error Domain=RBSAssertionErrorDomain Code=3 "Required client entitlement is missing" UserInfo={RBSAssertionAttribute=RBSDomainAttribute| domain:"com.apple.webkit" name:"MediaPlayback" sourceEnvironment:"(null)", NSLocalizedFailureReason=Required client entitlement is missing} To sum up, this error will appear when playing audio or video in HTML. Then the app performance will drop a lot, and the interactive response will be very slow.