When I use musicKit SDK for Android 1.1.2, I found that MediaContainerType only defines three types:
NONE = 0;
ALBUM = 1;
PLAYLIST = 2;
The RADIO_STATION type is not defined.
However, the documentation of com.apple.android.music.playback.model states that the RADIO_STATION type is supported.
This problem causes an error after I pass in the stations ID:
MediaSessionManager com.apple.android.music.sdk.testapp D onPlaybackError() Quincy java.io.IOException
May I ask how to solve this problem?
Explore the integration of media technologies within your app. Discuss working with audio, video, camera, and other media functionalities.
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Following WWDC 2023 "Support HDR images in your app", I'm trying to save 48-megapixel ProRAWs (taken on an iPhone 14 Pro Max) as HDR HEICs to the Photo Library. After processing the ProRAW file using CIRAWFilter, whether I use CIContext.heif10Representation() or convert to a CGImage, then UIImage, and use UIImage.heicData(), I get photos that behave oddly in the Photo Library. They appear too dark, and visibly brighten when first viewed, but more problematic is that the photos brighten a great deal more when you edit them with the Photos editor. This is the behavior when using the itur_2100_PQ color space, but itur_2100_HLG behaves similarly, except that it gets dramatically darker when edited. This behavior occurs whether CIRAWFilter.extendedDynamicRangeAmount is set to 0.0, or 2.0, or not set at all.
So what am I doing wrong? Here is a minimal iOS app -- well, just the ContentView -- that demonstrates the issue. You also need a .dng ProRAW file included in the project directory named test.dng. I'd love to include such a file, but I can't.
Be prepared for a multi-second wait when you save the photo.
import SwiftUI
import Photos
struct ContentView: View {
let context = CIContext()
let hdrColorSpace = CGColorSpace(name: CGColorSpace.itur_2100_PQ)!
var body: some View {
VStack(spacing: 100) {
Button("Save Photo From CGImage/UIImage") {
savePhotoFromUIImage()
}
Button("Save Photo From CIImage") {
savePhotoDirectFromCIImage()
}
}.padding(60)
}
//convert RAW with CIRAWFilter to CIImage, then convert to CGImage, then UIImage, then HEIF
private func savePhotoFromUIImage() {
if let ciImage = processRAW(url: Bundle.main.url(forResource:"test", withExtension: "dng")!) {
guard let outputCGImage = context.createCGImage(ciImage, from: ciImage.extent, format: .RGB10, colorSpace: hdrColorSpace) else { return }
let uiImage = UIImage(cgImage: outputCGImage)
if let heicData = uiImage.heicData() {
saveHEIFPhotoToLibrary(imageData: heicData)
} else {
print("Failed to convert UIImage to HEIC")
}
}
}
//convert RAW with CIRAWFilter to CIImage, then to HEIF
private func savePhotoDirectFromCIImage() {
if let ciImage = processRAW(url: Bundle.main.url(forResource:"test", withExtension: "dng")!) {
do {
let heif = try context.heif10Representation(of: ciImage, colorSpace: hdrColorSpace)
saveHEIFPhotoToLibrary(imageData: heif)
} catch {
print("Failed to get HEIF representation from CIContext")
}
}
}
private func processRAW(url: URL) -> CIImage? {
guard let coreRawFilter = CIRAWFilter(imageURL: url) else { return nil }
coreRawFilter.extendedDynamicRangeAmount = 2.0 //the issue persists whether this is not set, or set to 0, or set to, say, 2.0
guard let ciImage = coreRawFilter.outputImage else { return nil }
return ciImage
}
private func saveHEIFPhotoToLibrary(imageData: Data) {
PHPhotoLibrary.shared().performChanges({
let creationRequest = PHAssetCreationRequest.forAsset()
let options = PHAssetResourceCreationOptions()
creationRequest.addResource(with: .photo, data: imageData, options: options)
}) { success, error in
if let error = error {
print("Error saving photo: \(error.localizedDescription)")
} else {
print("Photo saved.")
}
}
}
}
Topic:
Media Technologies
SubTopic:
Photos & Camera
Tags:
Photos and Imaging
Core Graphics
Core Image
EDR
Hello Apple Developer Community,
I am trying to play an HLS stream using the React Native Video player (underneath it's using AvPlayer). I am able to play the stream smoothly, but in some cases the player can not play the stream properly.
Behaviour:
react-native-video: I am getting the below error.
Error details from react-native-video player:
Error Code: -12971
Domain: CoreMediaErrorDomain
Localised Description: The operation couldn’t be completed. (CoreMediaErrorDomain error -12971.)
Target: 2457
The error does not provide a specific failure reason or recovery suggestion, which makes troubleshooting challenging.
AvPlayer on native iOS project: Video playback stopped after playing a few seconds.
AVPlayer configuration:
player.currentItem?.preferredForwardBufferDuration = 1
player.automaticallyWaitsToMinimizeStalling = true
N.B.: The same buffer duration is working perfectly for others.
Stream properties:
video resolution: 1280 x 720
I have attached an overview report generated from MediaStreamValidator.
I would appreciate any insights or suggestions on how to address this error. Has anyone in the community experienced a similar issue or have any advice on potential solutions?
Thank you for your help!
(This only started happening as of Xcode 26.)
I know macOS and watchOS don't support this property, but all other platforms do (did?) up until I upgraded Xcode. Now when I compile I get this:
Value of type 'AVPlayerItem' has no member 'externalMetadata'
Safari is supposed to support animated AVIF images since version 16, but the ones I've tested perform very poorly, even on an M4 Mac Mini running Sequoia 15.1.1.
I believe Safari delegates decoding to the operating system itself, so this issue also happens in Live Preview in the finder, when I try to preview a file.
Sample file here: https://s3.us-west-2.amazonaws.com/cdn.paintera.org/test/sample.avif
322KB file, 5 seconds long, 12fps
This plays perfectly on Chrome on Mac OS, but is slow and laggy on Safari and Live Preview (it takes about 6.5 seconds to finish the 5 second video).
Does anyone know how to fix this or workaround this issue?
Topic:
Media Technologies
SubTopic:
Video
In iOS 26 (Developer Beta), the AVCaptureMetadataOutputObjectsDelegate no longer receives callbacks when metadataOutput.metadataObjectTypes = [.face] is set. On earlier iOS versions the issue does not occur. Interestingly, face detection works if I set the sessionPreset to .medium, but not with .high — except on the iPhone 16 Pro Max, where it works regardless.
Hello,
I have an iOS app that is recording audio that is working fine on iPads/iPhones. It asks for microphone permission and after that recording works.
I installed the same app on my M3 MacBook via TestFlight since iPad apps are supposed to work without a change that way. The app starts fine and everything, but it never asks for Microphone permission, so I can't record.
Do I need to do something to make this happen (this is not macCatalyst, its running the arm64 iPhone binary on macOS)
thanks
I'm creating Live Photos programmatically in my app using the Photos and AVFoundation frameworks. While the Live Photos work perfectly in the Photos app (long press shows motion), users cannot set them as motion wallpapers. The system shows "Motion not available" message.
Here's my approach for creating Live Photos:
// 1. Create video with required metadata
let writer = try AVAssetWriter(outputURL: videoURL, fileType: .mov)
let contentIdentifier = AVMutableMetadataItem()
contentIdentifier.identifier = .quickTimeMetadataContentIdentifier
contentIdentifier.value = assetIdentifier as NSString
writer.metadata = [contentIdentifier]
// Video settings: 882x1920, H.264, 30fps, 2 seconds
// Added still-image-time metadata at middle frame
// 2. Create HEIC image with asset identifier
var makerAppleDict: [String: Any] = [:]
makerAppleDict["17"] = assetIdentifier // Required key for Live Photo
metadata[kCGImagePropertyMakerAppleDictionary as String] = makerAppleDict
// 3. Generate Live Photo
PHLivePhoto.request(
withResourceFileURLs: [photoURL, videoURL],
placeholderImage: nil,
targetSize: .zero,
contentMode: .aspectFit
) { livePhoto, info in
// Success - Live Photo created
}
// 4. Save to Photos library
PHAssetCreationRequest.forAsset().addResource(with: .photo, fileURL: photoURL, options: nil)
PHAssetCreationRequest.forAsset().addResource(with: .pairedVideo, fileURL: videoURL, options: nil)
What I've Tried
Matching exact video specifications from Camera app (882x1920, H.264, 30fps)
Adding all documented metadata (content identifier, still-image-time)
Testing various video durations (1.5s, 2s, 3s)
Different image formats (HEIC, JPEG)
Comparing with exiftool against working Live Photos
Expected Behavior
Live Photos created programmatically should be eligible for motion wallpapers, just like those from the Camera app.
Actual Behavior
System shows "Motion not available" and only allows setting as static wallpaper.
Any insights or workarounds would be greatly appreciated. This is affecting our users who want to use their created content as wallpapers.
Questions
Are there additional undocumented requirements for Live Photos to be wallpaper-eligible?
Is this a deliberate restriction for third-party apps, or a bug?
Has anyone successfully created Live Photos that work as motion wallpapers?
Environment
iOS 17.0 - 18.1
Xcode 16.0
Tested on iPhone 16 Pro
Topic:
Media Technologies
SubTopic:
Photos & Camera
Tags:
LivePhotosKit JS
PhotoKit
Core Image
AVFoundation
Hi,
I would like to use macro-mode for the custom camera using AVCaptureDevice in my project. This feature might help to automatically adjust and switch between lenses to get a close up clear image. It looks like this feature is not available and there are no open apis to achieve macro mode from Apple. Is there a way to get this functionality in the custom camera without losing the image quality. Please let me know if this is possible.
Thanks you,
Adil Thamarasseri
Hi,
our CourAudio server plugin utilizes the SystemConfiguration.framework to store and restore specific shared system wide settings.
While our application can authenticate to utilize the SystemConfiguration.framework to gain write access to the shared configuration settings the CoreAudio server plugin obviously can't have any user interaction and therefor does not authenticate.
Is it possible to authenticate the CoreAudio server plugin to gain write permissions? Are there any entitlements or other means that would allow this?
Thanks!
Topic:
Media Technologies
SubTopic:
Audio
Tags:
System Configuration
Core Audio
Inter-process communication
Service Management
I noticed that AVSampleBufferDisplayLayerContentLayer is not released when the AVSampleBufferDisplayLayer is removed and released.
It is possible to reproduce the issue with the simple code:
import AVFoundation
import UIKit
class ViewController: UIViewController {
var displayBufferLayer: AVSampleBufferDisplayLayer?
override func viewDidLoad() {
super.viewDidLoad()
let displayBufferLayer = AVSampleBufferDisplayLayer()
displayBufferLayer.videoGravity = .resizeAspectFill
displayBufferLayer.frame = view.bounds
view.layer.insertSublayer(displayBufferLayer, at: 0)
self.displayBufferLayer = displayBufferLayer
DispatchQueue.main.asyncAfter(deadline: .now() + 1) {
self.displayBufferLayer?.flush()
self.displayBufferLayer?.removeFromSuperlayer()
self.displayBufferLayer = nil
}
}
}
In my real project I have mutliple AVSampleBufferDisplayLayer created and removed in different view controllers, this is problematic because the amount of leaked AVSampleBufferDisplayLayerContentLayer keeps increasing.
I wonder that maybe I should use a pool of AVSampleBufferDisplayLayer and reuse them, however I'm slightly afraid that this can also lead to strange bugs.
Edit: It doesn't cause leaks on iOS 18 device but leaks on iPad Pro, iOS 17.5.1
Hello,
My company has an in-store app with FPS SDK 4.x (1024) keys. We've handed those keys over to a trusted third-party and we do not have them. We've been in-store for several years.
The person that created the keys in our organization mistakenly stored them encrypted to our third-party's PGP keys, so we cannot decrypt them, and the third party also has no mechanism to provide us with the keys even though it is in their runtime environment. They only have secure mechanisms for us to upload keys onto their servers.
We are trying to migrate to a different third-party DRM provider, and would like to obtain new keys. Unfortunately, the developer portal won't let me create new keys, saying that we have exceeded the number of keys allowed, which I assume is one.
Additionally, the new DRM provider can only support SDK 4.x keys, and it appears that we can only request SDK 5.x keys on the Apple Developer portal, as the SDK 4.0 option is grayed out. Regardless, it seems that we are not able to request any keys.
We've submitted a request to the support e-mail address and received an automated e-mail that the response should take a few days, but may take longer on occasion. It's now been a month. The e-mail says that the reply address is not monitored. Is there any way we can accelerate this?
Thank you,
Carlos
I noticed that Instagram and iMessage support receiving shared lyrics from Apple Music. Specifically, when users long-press lyrics, a sheet pops up showing iMessage and Instagram. Clicking on either app generates a beautifully formatted lyrics image.
I've looked through MusicKit documentation but couldn't find any related APIs.
How can I implement this functionality in my app?
HI Guys,
I'm using Shazamkit in my IOS app and successfully capturing the currently playing track details, when using the devices (iPhone) built-in mic.
When I test with AirPods though, my app cannot both send the output to through the AirPods and capture that same output with the AirPods mic, for Shazamkit recognition.
I believe this must be possible, because the Shazamkit widget on IOS can do this.
Is it restricted in some way for third party apps?
If not, I'd appreciate some guidance on how to achieve this in Swift code.
Thanks in advance.
Please consider adding the ability to programatically download Premium and Enhanced voices. At the moment it is extremely inconvenient for our users, as they have to navigate to settings themselves to download voices. Our app relies heavily on SpeechSynthesis integration, and it would greatly benefit from this feature.
FB16307193
Hello,
I'm developing an app that displays a photo library using UICollectionView and PHCachingImageManager. I'd like to achieve a user experience similar to the native iOS Photos app, where low-quality images are shown quickly while scrolling, and higher-quality images are loaded for visible cells once scrolling stops.
I'm currently using the following approach:
While Scrolling: I'm using the UICollectionViewDataSourcePrefetching protocol. In the prefetchItemsAt method, I call startCachingImages with low-quality options to cache images in advance.
After Scrolling Stops: In the scrollViewDidEndDecelerating method, I intend to load high-quality images for the currently visible cells.
I have a few questions regarding this approach:
What is the best practice for managing both low-quality and high-quality images efficiently with PHCachingImageManager? Is it correct to call startCachingImages with fastFormat options and then call it again with highQualityFormat in scrollViewDidEndDecelerating?
How can I minimize the delay when a low-quality image is replaced by a high-quality one? Are there any additional strategies to help pre-load high-quality images more effectively?
Topic:
Media Technologies
SubTopic:
Photos & Camera
In my app I use AVAssetReaderTrackOutput to extract PCM audio from a user-provided video or audio file and display it as a waveform.
Recently a user reported that the waveform is not in sync with his video, and after receiving the video I noticed that the waveform is in fact double as long as the video duration, i.e. it shows the audio in slow-motion, so to speak.
Until now I was using
CMFormatDescription.audioStreamBasicDescription.mSampleRate
which for this particular user video returns 22'050. But in this case it seems that this value is wrong... because the audio file has two audio channels with different sample rates, as returned by
CMFormatDescription.audioFormatList.map({ $0.mASBD.mSampleRate })
The first channel has a sample rate of 44'100, the second one 22'050. If I use the first sample rate, the waveform is perfectly in sync with the video.
The problem is given by the fact that the ratio between the audio data length and the sample rate multiplied by the audio duration is 8, double the ratio for the first audio file (4). In the code below this ratio is given by
Double(length) / (sampleRate * asset.duration.seconds)
When commenting out the line with the sampleRate variable definition in the code below and uncommenting the following line, the ratios for both audio files are 4, which is the expected result. I would expect audioStreamBasicDescription to return the correct sample rate, i.e. the one used by AVAssetReaderTrackOutput, which (I think) somehow merges the stereo tracks. The documentation is sparse, and in particular it’s not documented whether the lower or higher sample rate is used; in this case, it seems like the higher one is used, but audioStreamBasicDescription for some reason returns the lower one.
Does anybody know why this is the case or how I should extract the sample rate of the produced PCM audio data? Should I always take the higher one?
I created FB19620455.
let openPanel = NSOpenPanel()
openPanel.allowedContentTypes = [.audiovisualContent]
openPanel.runModal()
let url = openPanel.urls[0]
let asset = AVURLAsset(url: url)
let assetTrack = asset.tracks(withMediaType: .audio)[0]
let assetReader = try! AVAssetReader(asset: asset)
let readerOutput = AVAssetReaderTrackOutput(track: assetTrack, outputSettings: [AVFormatIDKey: Int(kAudioFormatLinearPCM), AVLinearPCMBitDepthKey: 16, AVLinearPCMIsBigEndianKey: false, AVLinearPCMIsFloatKey: false, AVLinearPCMIsNonInterleaved: false])
readerOutput.alwaysCopiesSampleData = false
assetReader.add(readerOutput)
let formatDescriptions = assetTrack.formatDescriptions as! [CMFormatDescription]
let sampleRate = formatDescriptions[0].audioStreamBasicDescription!.mSampleRate
//let sampleRate = formatDescriptions[0].audioFormatList.map({ $0.mASBD.mSampleRate }).max()!
print(formatDescriptions[0].audioStreamBasicDescription!.mSampleRate)
print(formatDescriptions[0].audioFormatList.map({ $0.mASBD.mSampleRate }))
if !assetReader.startReading() {
preconditionFailure()
}
var length = 0
while assetReader.status == .reading {
guard let sampleBuffer = readerOutput.copyNextSampleBuffer(), let blockBuffer = sampleBuffer.dataBuffer else {
break
}
length += blockBuffer.dataLength
}
print(Double(length) / (sampleRate * asset.duration.seconds))
using iOS 26.2; Airpods 4
Long press stem to launch Siri
Speak "Record Voice Memo" -> Recording starts
Recording in progress...
Long press stem to launch Siri -> Nothing happens.
To stop recording need use phone.
is this intended behaviour?
i would like to be able to stop recording with Siri
I am able to launch Siri from phone while recording, but point is to keep phone in pocket and start/stop recordings only via Airpods.
I'm working on a photo app and I want to allow the user to display, edit and delete photos. I can fetch all photos using PHAsset.fetchAssets(with: options). This works as intended.
However, I can't seem to find a way to prevent the user from seeing photos from a Shared Library. The PHAssetSourceType only contains typeCloudShared to only show items from a specific album; not library.
How can I filter by iCloud Shared Library?
I am working on an iOS application using SwiftUI where I want to convert a JPG and a MOV file to a live photo. I am utilizing the LivePhoto Class from Github for this. The JPG and MOV files are displayed correctly in my WallpaperDetailView, but I am facing issues when trying to download the live photo to the gallery and generate the Live Photo.
Here is the relevant code and the errors I am encountering:
Console prints:
Play button should be visible Image URL fetched and set: Optional("https://firebasestorage.googleapis.com/...") Video is ready to play Video downloaded to: file:///var/mobile/Containers/Data/Application/.../tmp/CFNetworkDownload_7rW5ny.tmp Failed to generate Live Photo
I have verified that the app has the necessary permissions to access the Photo Library.
The JPEG and MOV files are successfully downloaded and can be displayed in the app.
The issue seems to occur when generating the Live Photo from the downloaded files.
struct WallpaperDetailView: View {
var wallpaper: Wallpaper
@State private var isLoading = false
@State private var isImageSaved = false
@State private var imageURL: URL?
@State private var livePhotoVideoURL: URL?
@State private var player: AVPlayer?
@State private var playerViewController: AVPlayerViewController?
@State private var isVideoReady = false
@State private var showBuffering = false
var body: some View {
ZStack {
if let imageURL = imageURL {
GeometryReader { geometry in
KFImage(imageURL)
.resizable()
...
}
}
if let playerViewController = playerViewController {
VideoPlayerViewController(playerViewController: playerViewController)
.frame(maxWidth: .infinity, maxHeight: .infinity)
.clipped()
.edgesIgnoringSafeArea(.all)
}
}
.onAppear {
PHPhotoLibrary.requestAuthorization { status in
if status == .authorized {
loadImage()
} else {
print("User denied access to photo library")
}
}
}
private func loadImage() {
isLoading = true
if let imageURLString = wallpaper.imageURL, let imageURL = URL(string: imageURLString) {
self.imageURL = imageURL
if imageURL.scheme == "file" {
self.isLoading = false
print("Local image URL set: \(imageURL)")
} else {
fetchDownloadURL(from: imageURLString) { url in
self.imageURL = url
self.isLoading = false
print("Image URL fetched and set: \(String(describing: url))")
}
}
}
if let livePhotoVideoURLString = wallpaper.livePhotoVideoURL, let livePhotoVideoURL = URL(string: livePhotoVideoURLString) {
self.livePhotoVideoURL = livePhotoVideoURL
preloadAndPlayVideo(from: livePhotoVideoURL)
} else {
self.isLoading = false
print("No valid image or video URL")
}
}
private func preloadAndPlayVideo(from url: URL) {
self.player = AVPlayer(url: url)
let playerViewController = AVPlayerViewController()
playerViewController.player = self.player
self.playerViewController = playerViewController
let playerItem = AVPlayerItem(url: url)
playerItem.preferredForwardBufferDuration = 1.0
self.player?.replaceCurrentItem(with: playerItem)
...
print("Live Photo Video URL set: \(url)")
}
private func saveWallpaperToPhotos() {
if let imageURL = imageURL, let livePhotoVideoURL = livePhotoVideoURL {
saveLivePhotoToPhotos(imageURL: imageURL, videoURL: livePhotoVideoURL)
} else if let imageURL = imageURL {
saveImageToPhotos(url: imageURL)
}
}
private func saveImageToPhotos(url: URL) {
...
}
private func saveLivePhotoToPhotos(imageURL: URL, videoURL: URL) {
isLoading = true
downloadVideo(from: videoURL) { localVideoURL in
guard let localVideoURL = localVideoURL else {
print("Failed to download video for Live Photo")
DispatchQueue.main.async {
self.isLoading = false
}
return
}
print("Video downloaded to: \(localVideoURL)")
self.generateAndSaveLivePhoto(imageURL: imageURL, videoURL: localVideoURL)
}
}
private func generateAndSaveLivePhoto(imageURL: URL, videoURL: URL) {
LivePhoto.generate(from: imageURL, videoURL: videoURL, progress: { percent in
print("Progress: \(percent)")
}, completion: { livePhoto, resources in
guard let resources = resources else {
print("Failed to generate Live Photo")
DispatchQueue.main.async {
self.isLoading = false
}
return
}
print("Live Photo generated with resources: \(resources)")
self.saveLivePhotoToLibrary(resources: resources)
})
}
private func saveLivePhotoToLibrary(resources: LivePhoto.LivePhotoResources) {
LivePhoto.saveToLibrary(resources) { success in
DispatchQueue.main.async {
if success {
self.isImageSaved = true
print("Live Photo saved successfully")
} else {
print("Failed to save Live Photo")
}
self.isLoading = false
}
}
}
private func fetchDownloadURL(from gsURL: String, completion: @escaping (URL?) -> Void) {
let storageRef = Storage.storage().reference(forURL: gsURL)
storageRef.downloadURL { url, error in
if let error = error {
print("Failed to fetch image URL: \(error)")
completion(nil)
} else {
completion(url)
}
}
}
private func downloadVideo(from url: URL, completion: @escaping (URL?) -> Void) {
let task = URLSession.shared.downloadTask(with: url) { localURL, response, error in
guard let localURL = localURL, error == nil else {
print("Failed to download video: \(String(describing: error))")
completion(nil)
return
}
completion(localURL)
}
task.resume()
}
}```
Topic:
Media Technologies
SubTopic:
Photos & Camera
Tags:
Files and Storage
Swift
SwiftUI
Photos and Imaging