I am developing an app running on iOS/iPadOS and on macOS using MacCatalyst. It uses ApplicationMusicPlayer.shared to play music from Apple Music. However, on the Mac songs with contentRating == .explicit do not work.
I will get the following error (sorry, German localization):
Failed to prepareToPlay error=<MPMusicPlayerControllerErrorDomain.6 "Failed to prepare to play" {}>
Error playing item: Der Vorgang konnte nicht abgeschlossen werden. (MPMusicPlayerControllerErrorDomain-Fehler 6.)
On iOS/iPadOS these songs play correctly. What can I do to also play explicit songs using MacCatalyst?
Thanks,
Dirk
Media Player
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I am have implemented PIP in my app. When user goes to background while video was playing. App opens PIP and everything works fine. But when user locks the device , PIP is not stopping/Pausing the video.
Is there a way I can pause the Video when user locks the device?
I wanted to report an issue I've encountered with the latest Beta 6 update concerning the immersive space feature. Before this update, when I was in immersive space and clicked on a window button to play a video using AVPlayer, I had the option to keep other windows open and accessible within the environment. Could you please investigate this issue? It would be helpful to know if this is an intentional change or if there might be a bug affecting window management in immersive space.
Thank you for your attention to this matter. I look forward to your response.
I just updated to IOS 18.0 Beta last night and this morning tried to launch Apple Podcast app and it will not load at all. It’s stuck in the “updating library“ with the spinning wheel icon. it was working just fine last night before I chose to update. Is there a known fix or am I better off going back to IOS 17?
Media Player album artwork images do not release memory after loading so memory accumulates, eventually impacting performance and causing crashes.
Steps To Reproduce:
Download example project and run on device
Grant access to library of 100+ albums
Scroll through albums on any tab screen
Observe steady memory increase in Xcode debug navigator and crash as you scroll
Observe same memory accumulation on other screens that use different methods to get album artwork images
Observations:
Various methods of obtaining album artwork insufficiently release memory and impact app performance.
1 - Artwork Image releases memory sometimes if the images are small and you scroll slow, but app will still accumulate memory, drop frames when scrolling, and eventually crash.
2 - Value For Property behaves similar to Artwork Image even when using the implicit size of the artwork bounds.
3 - Image From Disk problem seems related to perform() method since you can remove UIImage and memory still accumulates
All 3 methods result in higher retain counts than expected for artwork objects that could be preventing memory from releasing
Is there anyway we can add volume controls to adjust the volume settings from our phone? I’ve noticed we have to reply on the radio head unit to control our volume when it comes to our navigation and music. we should have full access to control it from our phone as well. Any thoughts?
Topic:
Developer Tools & Services
SubTopic:
Apple Developer Program
Tags:
AudioToolbox
Media Player
CarPlay
iOS
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.
I am stuck with some of my downloaded books not syncing correctly. A book that imported correctly to my library on Mac (7h of audio), only syncs to my iPhone as 4min audio. And I just can't find a way to make it work... All the sync is switched on in iCloud, but I sync them via cable anyway. Books downloaded as singular file seem to work, but books downloaded as chapters are not syncing correctly.
My suspicion is either:
Books that are downloaded as individual chapters only carry over the first chapter to the iPhone (why?!)
iPhone runs on iOS18 Beta, while the Mac is still on Sonoma 14.5, which may be causing the issue (?)
or something else entirely, that I am unaware of...
Anyway, any input, helpful articles or advice how to sort this out would be much appreciated!
Thanks.
Hello !
I am working on an app connected to an external streamer .
I would like to display current playing song on the Lock Screen.
I tried to update the information in MPNowPlayingInfoCenter but I need to play a sound on my iPhone for the control to be displayed .
Is there a way to do it without playing a sound?
If not, playing a silent sound would be the only solution ? validated by Apple ? :-/
Thank you
Frederic
I have a React website that uses getUserMedia to capture user audio. I'm displaying this website in an iOS mobile app using UIWebView in SwiftUI. The audio is correctly captured when the app is in focus. However, when the app goes to the home screen and runs in the background, the microphone audio gets cut off. This issue does not occur when the website is opened in iOS Safari.
Here's my Info.plist and .entitlements file. I granted most, if not all, permissions for both files in an attempt to get it to work, but it still doesn't resolve the issue.
Info.plist
audio
bluetooth-central
bluetooth-peripheral
external-accessory
fetch
location
nearby-interaction
processing
push-to-talk
remote-notification
voip
Entitlements.plist
com.apple.developer.push-to-talk: true
com.apple.developer.spatial-audio.profile-access: true
inter-app-audio: true
I have a user who is reporting an error and has been kind enough to share screen recordings to help diagnose. I am not experiencing this error, nor am I able to replicate on other devices I've tried, so I'm stuck trying to fix. His & other devices tested were all running iOS 17.5.1. Any details on the cause of this error or potential workarounds I could use to resolve would be greatly appreciated.
try await ApplicationMusicPlayer.shared.play()
throws:
The operation couldn't be completed (MPMusicPlayerControllerErrorDomain error 6.)
MusicAuthorization.currentStatus is .authorized
ApplicationMusicPlayer.shared.isPreparedToPlay is false
ApplicationMusicPlayer.shared.queue.currentEntry is nil (I've noticed this to be the case even when I am able to successfully play as well)
Queue was loaded using ApplicationMusicPlayer.shared.queue = [album] but I also tried ApplicationMusicPlayer.shared.queue = ApplicationMusicPlayer.Queue(album:startingAt:) and it made no difference. album.playParameters are correct. He experiences the error when attempting to play any album.
Any and all help is truly appreciated. Feedback Assistant filed has gone unanswered.
MPMusicPlayerControllers nowPlayingItem no longer seems to be able to change a song. The code use to work but seems to be broken on iOS 16, 17 and now the iOS 18 beta.
When newSong is triggered, the song restarts but it does not change songs. Instead I get the following error: Failed to set now playing item error=<MPMusicPlayerControllerErrorDomain.5 "Unable to play item <MPConcreteMediaItem: 0x9e9f0ef70> 206357861099970620" {}>.
The documentation seems to indicate I’m doing things correctly.
class MusicPlayer {
var songTwo: MPMediaItem?
let player = MPMusicPlayerController.applicationMusicPlayer
func start() async {
await MPMediaLibrary.requestAuthorization()
let myPlaylistsQuery = MPMediaQuery.playlists()
let playlists = myPlaylistsQuery.collections!.filter { $0.items.count > 2}
let playlist = playlists.first!
let songOne = playlist.items.first!
songTwo = playlist.items[1]
player.setQueue(with: playlist)
play(songOne)
}
func newSong() {
guard let songTwo else { return }
play(songTwo)
}
private func play(_ song: MPMediaItem) {
player.stop()
player.nowPlayingItem = song
player.prepareToPlay()
player.play()
}
}
Hello,
We've a music app reading MPMediaItem.
We got items using MPMediaQuery. But we realized that some downloaded tracks from Apple Music were fetched too. Not all downloaded track but only those who were played recently.
Of course, since these tracks are protected with DRM we can't play them in our player.
It's weird to get them in our query because we added predicate in order to dont fetch protected asset and iCloud item
MPMediaPropertyPredicate(value: false, forProperty: MPMediaItemPropertyHasProtectedAsset)
MPMediaPropertyPredicate(value: false, forProperty: MPMediaItemPropertyIsCloudItem)
To be sure, we made a second check on each item we've fetched
extension MPMediaItem {
public func isValid() -> Bool {
return self.assetURL != nil && !self.isCloudItem && !self.hasProtectedAsset
}
}
But we still get these items. Their hasProtectedAsset attribute always return false.
I dont know if it's a bug, but since we can't detect this items as Apple Music downloaded track, we can't either:
filter them to not add them in our application library
OR
switch on a MPMusicPlayerController.applicationMusicPlayer to allow the user to play them
Topic:
Media Technologies
SubTopic:
General
Tags:
Apple Music API
Media Player
Media Library
AVFoundation
Since iOS 12 it has become difficult to detect the end of playback using the system music player.
In earlier iOS versions, the now playing item would be set nil and you would receive a notification that the player stopped.
In iOS 12 and later, nowPlayingItem still contains the current song and the only notification you get is MPMusicPlayerControllerPlaybackStateDidChangeNotification with the playbackState set to MPMusicPlaybackStatePaused.
Pressing pause in my car (or any remote access) generates the same conditions making it difficult to correctly detect the difference.
It would be nice if they added a notification that playback was done (similar to the other players).
Any suggestions?
Hi,
just generated a HDR10 MVHEVC file, mediainfo is below:
Color range : Limited
Color primaries : BT.2020
Transfer characteristics : PQ
Matrix coefficients : BT.2020 non-constant
Codec configuration box : hvcC+lhvC
then generate the segment files with below command:
mediafilesegmenter --iso-fragmented -t 4 -f av_1 av_new_1.mov
then upload the segment files and prog_index.m3u8 to web server.
just find that can not play the HLS stream on Safari...
the url is http://ip/vod/prog_index.m3u8
just checked that if i remove the tag Transfer characteristics : PQ when generating the MVHEVC file.
above same mediafilesegmenter command and upload the files to web server.
the new version of HLS stream is can play on Safari...
Is there any way to play HLS PQ video on Safari. thanks.
I am using MusicKit ApplicationMusicPlayer to play music in my app. Everything works fine as long as I'm not playing large playlists that contain hundreds of songs. When I to play collection of songs that is larger than around 300 I'm always getting the error message saying:
"Prepare to play failed" UserInfo={NSDebugDescription=Prepare to play failed, NSUnderlyingError=0x121d42dc0 {Error Domain=MPMusicPlayerControllerErrorDomain Code=9 "Remote call timed out" UserInfo={NSDebugDescription=Remote call timed out}}}))
It doesn't matter if songs are downloaded to the device or not.
I am aware that there is another initializer for player's queue that accepts Playlist instances but in my app users can choose to sort playlist tracks in different order than the default and that makes using that initializer not feasible for me.
I tried everything I could think of, I tried to fall back on MPMusicPlayerController and pass array of MPMusicPlayerPlayParameters to it but the result was the same.
typealias QueueEntry = ApplicationMusicPlayer.Queue.Entry
let player = ApplicationMusicPlayer.shared
let entries: [QueueEntry] = tracks
.compactMap {
guard let song = $0 as? Song else { return nil }
return QueueEntry(song)
}
Task(priority: .high) { [player] in
do {
player.queue = .init(entries, startingAt: nil)
try await player.play() // prepareToPlay failed
} catch {
print(error)
}
}
In SwiftUI there is a built-in component for displaying album artworks called Artwork but there is no equivalent for UIKit.
My current approach is to use the .url() method to read image's URL and download the image or read it from the disk but the performance is much worse than it was previously with MPMediaItem's artworkImage method.
let artworkQueue = DispatchQueue(
label: "MusicKit-ArtworkQueue",
qos: .default,
attributes: .concurrent
)
let artworkSemaphore = DispatchSemaphore(value: 5)
extension Song {
func artworkImage(for size: CGSize, completion: @escaping (UIImage?) -> Void) {
artworkQueue.async {
artworkSemaphore.wait()
defer {
artworkSemaphore.signal()
}
let imageURL = artwork?.url(
width: Int(size.width),
height: Int(size.height)
)
// I hate doing this as it might very well break in the future
guard let imageURL, imageURL.scheme == "musicKit"
else {
return completion(nil)
}
guard let imageData = try? Data(contentsOf: imageURL),
let image = UIImage(data: imageData) else {
return completion(nil)
}
completion(image)
}
}
}
I really dislike this approach because it feels hacky but somewhat works. You might ask what's the semaphore for? Well, without it I could notice that MusicKit was choking and after reading too many artworks at once.
Can someone from Apple please provide us with an example on how to use MusicKit with UIKit properly?
Ideally (IMO) we would have a method defined on Song and other MusicKit structures that returns the image for us, just like MPMediaItem had the .artwork() method. It would make our lives so much easier.
Hey there, I'm trying to display all user's albums using the MediaPlayer library. I'm getting many albums returning nil, but I know artwork exists because they show up in the default Music app. There doesn't seem to be much rhyme or reason for what shows up and what doesn't. All downloaded albums display artwork, but some cloud album artwork displays as well. Here's the code I'm using to debug this.
let query = MPMediaQuery.albums()
if let albumCollections = query.collections {
albums = albumCollections
}
for album in albums {
let artwork = album.representativeItem?.artwork
print(artwork, artwork?.image(at: CGSize(width: 100, height: 100)))
}
Any help would be greatly appreciated. Thanks!
Just wondering if anyone else is having issues with currentPlaybackRate in release version of iOS 15.4? In my particular case this is using MPMusicPlayerController.applicationQueuePlayer.
I've always had issues controlling this property reliably but from what I can see it is now completely non-operational in 15.4.
I've isolated this behavior in a trivial project, and will file a radar, but hoping others may have some insight first.
FWIW- This is my trivial test case:
class ViewController: UIViewController {
lazy var player: MPMusicPlayerApplicationController = {
let player = MPMusicPlayerController.applicationQueuePlayer
player.repeatMode = .none
player.shuffleMode = .off
player.beginGeneratingPlaybackNotifications()
return player
}()
override func viewDidLoad() {
super.viewDidLoad()
NotificationCenter.default.addObserver(forName: .MPMusicPlayerControllerPlaybackStateDidChange, object: nil, queue: .main) { [weak self] notification in
guard let notificationPlayer = notification.object as? MPMusicPlayerApplicationController,
notificationPlayer === self?.player else {
return
}
debugPrint("Player state now: \(notificationPlayer.playbackState)")
}
}
@IBAction func goAction(_ sender: Any) {
guard let item = MPMediaQuery.songs().items?.randomElement() else {
debugPrint("Unable to access media items")
return
}
debugPrint("Now playing item: \(item.title ?? "")")
player.setQueue(with: [item.playbackStoreID])
player.prepareToPlay() { error in
guard error == nil else {
debugPrint("Player error: \(error!.localizedDescription)")
return
}
DispatchQueue.main.async { [weak self] in
self?.player.play()
}
}
}
@IBAction func slowAction(_ sender: Any) {
debugPrint("Setting currentPlaybackRate to 0.5")
player.currentPlaybackRate = 0.5
checkPlaybackRate()
}
@IBAction func fastAction(_ sender: Any) {
debugPrint("Setting currentPlaybackRate to 1.5")
player.currentPlaybackRate = 1.5
checkPlaybackRate()
}
func checkPlaybackRate(afterSeconds delay: TimeInterval = 1.0) {
DispatchQueue.main.asyncAfter(deadline: .now() + delay) {
debugPrint("After \(delay) seconds currentPlaybackRate now: \(self.player.currentPlaybackRate)")
}
}
}
Typical console output:
"Now playing item: I Know You Know"
"Player state now: MPMusicPlaybackState(rawValue: 2)"
"Player state now: MPMusicPlaybackState(rawValue: 1)"
"Setting currentPlaybackRate to 1.5"
"After 1.0 seconds currentPlaybackRate now: 1.0"
"Setting currentPlaybackRate to 0.5"
"After 1.0 seconds currentPlaybackRate now: 1.0"
I'm playing library items (MPMediaItem) and apple music tracks (Track) in MPMusicPlayerApplicationController.applicationQueuePlayer, but I can't use the actual Queue functionality because I can't figure out how to get both media types into the same queue. If there's a way to get both types in a single queue, that would solve my problem, but I've given up on that one.
Because I can't use a queue, I have to be able to detect when a song ends so that I can put the next song in the queue and play it. The only way I can figure out to detect when a song ends is by watching the playBackState, and I've actually got that pretty much working, but it's really ugly, because you get playBackState of paused when a song ends, and when a bluetooth speaker disconnects, etc.
The only answer I've been able to find on the internet is to watch the MPMusicPlayerControllerNowPlayingItemDidChange, and when that fires, and the nowPlayingItem is NIL, a song ends.. but that's not the case. When a song ends, the nowPlayingItem remains the same. There's got to be an answer to this problem, right?