Audio getting disabled, Not able to control audio, When opening music player audio works but not on instagram or any other apps. Audio button on notification bar is greyed out as getting disabled.

Hi! I am working with a team in developing a multichannel based audio web application. The whole structure is based on multiple tracks playing in sync, so after some research and failed attempts, we ended up going with the solution of having one audio buffer (HTMLAudioElement), containing a multichannel file (specifically 8 channels) that we play, split the channels, process them separately, and play the result back to the user. We started doing this with multichannel wav files, and it worked great but every playback was way too large to be scalable, so we started looking into other multichannel-capable files. So far we have tried aac, opus and webm, none of which has worked properly in safari. I've looked in the apple developer documentation, HLS and all that, and seems like the only option is eac3, but I haven't been able to convert any of my files to that format, and I have been really trying. The other option we have been exploring is decoding opus files with WASM manually, but with little success to date. Has anyone been able to achieve anything similar to this? Thanks!

Hello, I hope this message finds you well. I am currently working on a Unity-based iOS application that requires continuous microphone input while also producing sound outputs. For this we need to use iOS echo cancellation, so some sounds need to be played via the iOS layer w/ echo cancellation, I am manually setting up the Audio Session after the app starts. Using the .playAndRecord mode of AVAudioSession. However, I am facing an issue where the volume of the sound output is inconsistent across different iOS devices and scenarios. The process is quite simple, for each AudioClip we are about to play via unity, we copy the buffer data to our iOS Swift layer, which then does all the processing then plays the audio via the native layer. Here are the specific issues I am encountering: The volume level for the game sound effects fluctuate between a normal audible volume and a very low volume. The sound output behaves differently depending on whether the app is launched with the device at full volume or on mute, and if the app is put into background and in foreground afterwards. The volume inconsistency affects my game negatively, as it is very hard to hear some audios, regardless of the device or its initial volume state. I have followed the basic setup for AVAudioSession as per the documentation, but the inconsistencies persist. I'm also aware that Unity uses FMOD to set up the audio routing in iOS, we configure our custom routing after that. We tried tweaking the output volume prior to playing an audio so there isn't much discrepancy, this seems to align the output volume, however there is still some places where the volume is super low, I've looked into the waveforms in Unity and they all seem consistent, there is no reason why the volume would take a dip. private var audioPlayer = AVAudioPlayerNode() @objc public func Play() { audioPlayer.volume = AVAudioSession.sharedInstance().outputVolume * 0.25 audioPlayer.play() } We also explored changing the audio session options to see if we had any luck but unfortunately nothing has changed. private func ConfigAudioSession() { let audioSession = AVAudioSession.sharedInstance(); do { try audioSession.setCategory(.playAndRecord, options: [.mixWithOthers, .allowBluetooth, .defaultToSpeaker]); try audioSession.setMode(.spokenAudio) try audioSession.setActive(true); } catch { //Treat error } } Could anyone provide guidance or suggest best practices to ensure a stable and consistent volume output in this scenario? Any advice on this issue would be greatly appreciated. Thank you in advance for your help!

I have an iPad Pro 12.9". I am looking to make an app which can take a simultaneous audio recording from two different microphones at the same time. I want to be able to specify which of the 5 built-in microphones each audio stream should use - ideally one should be from the microphone on the left side of the iPad, and the other should be from one of the mics at the top of the iPad. Is this possible to achieve with the API? The end goal here is to be able to use the two audio streams and do some DSP on the recordings to determine the approximate direction a particular sound comes from.

In my iOS app, I've the functionality to record audio and video using the AVFoundation framework. While audio recording works smoothly on some devices, such as iPads and certain others, I'm encountering issues with newer models like iPhone 14, 14 Pro, and 15 series. Specifically, when attempting to initiate audio recording by tapping the microphone icon, the interface becomes unresponsive and remains static. This issue surfaced following an update to iOS 17.2.1. It seems to affect only a subset of devices, despite video recording functioning correctly across all devices.

I can't figure out how to get audio from my RealityKitContentBundle to play on Vision Pro... I have a scene in Reality Composer Pro called "WinterVivarium" which contains a 3D model of a tree, a particle emitter, a ChannelAudio entity, and an audio file (m4a) with 30 minutes of nature sounds. The 3D model and particle emitter load up just fine on my device, but I'm getting an error when I try to load the audio... Swift file below. When I run the app and this file gets called it throws the following error: "Error loading winter vivarium model and/or audio: The operation couldn’t be completed. (RealityKit.__REAsset.LoadError error 2.)" ChatGPT tells me error code 2 likely means "file not found" but I'm not sure on that one... Please help! import SwiftUI import RealityKit import RealityKitContent struct WinterVivarium: View { @State private var angle: Angle = .degrees(0) var body: some View { RealityView { content in let audioFilePath = "/Root/back-yard-feb-7am.m4a" let audioEntity = Entity() do { let entity = try await Entity(named: "WinterVivarium", in: realityKitContentBundle) content.add(entity) let resource = try await AudioFileResource.load(named: audioFilePath, from: "WinterVivarium.usda", in: RealityKitContent.RealityKitContentBundle) let audioController = audioEntity.playAudio(resource) } catch { print("Error loading winter vivarium model and/or audio: \(error.localizedDescription)") } } } #Preview { WinterVivarium() }

I have a new iPhone 15 PRO and some new Usb-C Earphones too, both are 3 days old. Since the first day I have been having this Error 1852797029. I can be listening to music on Apple Music for a while but when I stop it and a while passes without resuming playback, when I resume it it gives me this error and I have to close the App and disconnecting and connecting the earphones again. It's very annoying and I'm very angry that this is happening to me from day one. With both devices completely new. Does anyone have a solution other than connecting and disconnecting the earphones?

I have an application which is based on a video streaming service. A critical thing about this app is that these videos must be secured all the way and can't be pirated. The current problem I have is that anyone can use voice recorder to capture my videos audio which isn't suitable this app purpose. My question is Is there anyway that I can disable using any voice recording apps (or the microphone) and detect if someone tried to while streaming videos from my app? Thanks in advance

Hi, I'm trying to play multiple video/audio file with AVPlayer using AVMutableComposition. Each video/audio file can process simultaneously so I set each video/audio in individual tracks. I use only local file. let second = CMTime(seconds: 1, preferredTimescale: 1000) let duration = CMTimeRange(start: .zero, duration: second) var currentTime = CMTime.zero for _ in 0...4 { let mutableTrack = composition.addMutableTrack( withMediaType: .audio, preferredTrackID: kCMPersistentTrackID_Invalid ) try mutableTrack?.insertTimeRange( duration, of: audioAssetTrack, at: currentTime ) currentTime = currentTime + second } When I set many audio tracks (maybe more than 5), the first part sounds a little different from original when it starts. It seems like audio's front part is skipped. But when I set only two tracks, AVPlayer plays as same as original file. avPlayer.play() How can I fix it? Why do audio tracks affect that don't have any playing parts when start? Please let me know.

I'm trying to capture audio samples from the selected output device on macOS using ScreenCaptureKit? Thank you

hello all! I'm setting up a really simple media player in my swiftui app. the code is the following: import AVFoundation import MediaPlayer class AudioPlayerProvider { private var player: AVPlayer init() { self.player = AVPlayer() self.player.automaticallyWaitsToMinimizeStalling = false self.setupAudioSession() self.setupRemoteCommandCenter() } private func setupAudioSession() { do { try AVAudioSession.sharedInstance().setCategory(.playback, mode: .default) try AVAudioSession.sharedInstance().setActive(true) } catch { print("Failed to set up audio session: \(error.localizedDescription)") } } private func setupRemoteCommandCenter() { let commandCenter = MPRemoteCommandCenter.shared() commandCenter.playCommand.addTarget { [weak self] _ in guard let self = self else { return .commandFailed } self.play() return .success } commandCenter.pauseCommand.addTarget { [weak self] _ in guard let self = self else { return .commandFailed } self.pause() return .success } } func loadAudio(from urlString: String) { guard let url = URL(string: urlString) else { return } let asset = AVAsset(url: url) let playerItem = AVPlayerItem(asset: asset) self.player.pause() self.player.replaceCurrentItem(with: playerItem) NotificationCenter.default.addObserver(self, selector: #selector(self.streamFinished), name: .AVPlayerItemDidPlayToEndTime, object: self.player.currentItem) } func setMetadata(title: String, artist: String, duration: Double) { var nowPlayingInfo = [ MPMediaItemPropertyTitle: title, MPMediaItemPropertyArtist: artist, MPMediaItemPropertyPlaybackDuration: duration, MPNowPlayingInfoPropertyPlaybackRate: 1.0, ] as [String: Any] MPNowPlayingInfoCenter.default().nowPlayingInfo = nowPlayingInfo } @objc private func streamFinished() { self.player.seek(to: .zero) try? AVAudioSession.sharedInstance().setActive(false) MPNowPlayingInfoCenter.default().playbackState = .stopped } func play() { MPNowPlayingInfoCenter.default().playbackState = .playing self.player.play() } func pause() { MPNowPlayingInfoCenter.default().playbackState = .paused self.player.pause() } } pretty scholastic. The code works when called on views. It also shows up within the lock screen / dynamic island (when in background), but here lies the problems: The play/pause button do not appear neither in the Command Center nor in the dynamic island. If I tap on the position these button should show up, the command works. Just the icons are not appearing. the waveform animation does not animate when playing. Many audio apps are working just fine so is my code lacking something. But I don't know why. What is missing? Thanks in advance!

Hi, I would like to stream live audio (hls) from watch itself, our app can start stream on paired device, but when phone is not near by i want to start streaming on watchos (just like spotify or Apple music app) I watched the 2019 wwdc video about streaming and also looked to the documentation Documentation : https://developer.apple.com/documentation/watchkit/storyboard_support/playing_background_audio I can present the route controller to select output, but for example after selecting Air Podcas, stream did not start.. Here is the code: (I have enabled background mode audio) do { try AVAudioSession.sharedInstance().setCategory(.playback, mode: .default, policy: .longFormAudio, options: []) } catch { print("no audiosession!") } AVAudioSession.sharedInstance().activate(options: []) { success, error in dump(success) dump(error) DispatchQueue.main.async { if let streamURL = moduleItem.media?[0] as? String { dump(streamURL) let asset = AVURLAsset(url: URL(string: streamURL)!, options: nil) let item = AVPlayerItem(asset: asset) let player = AVQueuePlayer(playerItem: item) player.play() } } }

Hi, So recently I've been itching to get some actual work done and create something that is genuinely useful to me. Mainly, I want to practice my skills and hopefully build up some new ones. My concept/idea is to create something that resembles spatial audio ( or spatialized stereo ), but on steroids for macOS. I want to create something that has much more customizability, but also ease of use. I'd like to make use of the power in products like AirPods Pro and create a more immersive audio experience. However, before I make any serious plans, I'd like to ask for some feedback, really just to consider the feasibility of something like this. I throughly enjoy a rich audio experience, but I feel the experience as is on macOS is quite lackluster, especially compared to iOS with system wide spatialized stereo already available. I would genuinely appreciate any feedback or support that could be given on this project. Thank you for your time. I also apologize if this is the wrong usage of this forum/support.

Does anyone have a ready-made script/shortcut like the one shown in the video?

Hi, does anyone know how to capture audio input in vision os? I tried the sample code from official examples https://developer.apple.com/documentation/avfoundation/avcapturesession , but it did work.

Has anyone found a way to retrieve user token if I want to make an app on Flutter that uses that to make Apple Music API calls to just retrieve the user data and display it on the application? Something like when a user opens their app, there is a button that says connect with apple. It takes the user to give permissions for apple music and that retrieves their user token. I know there is Music Kit on Swift but i wonder if there is something like that on flutter

https://developer.apple.com/videos/play/wwdc2023/10235/ - In this WWDC session, at 3:19 - Apple has introduced **Other audio ducking ** feature In iOS17, we can control the amount of 'other audio' ducking through the AVAudioEngine. Is this also possible on AVAudioSession ? We are using an AVAudioSession for a VOIP call while concurrently attempting to play a video through an AVPlayer. However, the volume of the AVPlayer is considerably low. Does anyone have any ideas on how to achieve the level of control that AVAudioEngine offers?

Some of installers which we have suddenly become broken for users running the latest version of OS X, I found that the reason was that we install Core Audio HAL driver and because I wanted to avoid system reboot I relaunched coreaudio daemon via from a pkg post-install script. sudo launchctl kickstart -kp system/com.apple.audio.coreaudiod So with the OS update the command fails, if a computer has SIP enabled (what is the default). sudo launchctl kickstart -kp system/com.apple.audio.coreaudiod Password: Could not kickstart service "com.apple.audio.coreaudiod": 1: Operation not permitted It would be super nice if either the change can be: reverted OR I and similar people to know a workaround of how to hot-plug (and unplug) such a HAL driver.

I am trying to create an app for a custom Now Playing UI. How can I grab the following: Song Name Album Name Artist Name Album Art

I'm attempting to record from a device's microphone (under iOS) using AVAudioRecorder. The examples are all quite simple, and I'm following the same method. But I'm getting error messages on attempts to record, and the resulting M4A file (after several seconds of recording) is only 552 bytes long and won't load. Here's the recorder usage: func startRecording() { let settings = [ AVFormatIDKey: Int(kAudioFormatMPEG4AAC), AVSampleRateKey: 22050, AVNumberOfChannelsKey: 1, AVEncoderAudioQualityKey: AVAudioQuality.high.rawValue ] do { recorder = try AVAudioRecorder(url: tempFileURL(), settings: settings) recorder?.delegate = self recorder!.record() recording = true } catch { recording = false recordingFinished(success: false) } } The immediate sign of trouble appears to be the following, in the console. Note the 0 bits per channel and irrelevant 8K sample rate: AudioQueueObject.cpp:1580 BuildConverter: AudioConverterNew returned -50 from: 0 ch, 8000 Hz, .... (0x00000000) 0 bits/channel, 0 bytes/packet, 0 frames/packet, 0 bytes/frame to: 1 ch, 8000 Hz, Int16 A subsequent attempt to load the file into AVAudioPlayer results in: MP4_BoxParser.cpp:1089 DataSource read failed MP4AudioFile.cpp:4365 MP4Parser_PacketProvider->GetASBD() failed AudioFileObject.cpp:105 OpenFromDataSource failed AudioFileObject.cpp:80 Open failed But that's not surprising given that it's only 500+ bytes and we had the earlier error. Anybody have an idea here? Every example on the Web shows essentially this exact method. I've also tried constructing the recorder with let audioFormat = AVAudioFormat.init(standardFormatWithSampleRate: 44100, channels: 1) if audioFormat == nil { print("Audio format failed.") } else { do { recorder = try AVAudioRecorder(url: tempFileURL(), format: audioFormat!) ... with mostly the same result. In that case the instantiation error message was the following, which at least mentions the requested sample rate: AudioQueueObject.cpp:1580 BuildConverter: AudioConverterNew returned -50 from: 0 ch, 44100 Hz, .... (0x00000000) 0 bits/channel, 0 bytes/packet, 0 frames/packet, 0 bytes/frame to: 1 ch, 44100 Hz, Int32