I want to create a Live Photo. The project includes a .jpg image and a .mov video (2 seconds). I am sure they are correct.
Two permissions in xcode have been added:
Privacy - Photo Library Usage Description
Privacy - Photo Library Additions Usage Description Simulate: iphone 16, ios 18.3
The codes in ContentView.swift :
private func saveLivePhoto(imageURL: URL, videoURL: URL, completion: @escaping (Bool, Error?) -> Void) {
PHPhotoLibrary.shared().performChanges {
let creationRequest = PHAssetCreationRequest.forAsset()
let options = PHAssetResourceCreationOptions()
options.shouldMoveFile = false
creationRequest.addResource(with: .photo, fileURL: imageURL, options: options)
creationRequest.addResource(with: .pairedVideo, fileURL: videoURL, options: options)
} completionHandler: { success, error in
DispatchQueue.main.async {
print(error)
completion(success, error)
}
}
}
guard let imageURL = Bundle.main.url(forResource: "livephoto", withExtension: "jpeg"),
let videoURL = Bundle.main.url(forResource: "livephoto", withExtension: "mov") else {
showAlertMessage(title: "error", message: "cant find Live Photo ")
return
}
print("imageURL: \(imageURL)")
print("videoURL: \(videoURL)")
saveLivePhoto(imageURL: imageURL, videoURL: videoURL) { success, error in
if success {
xxxxx
} else {
xxxxx
}
}
Really need help, thanks
Explore the integration of media technologies within your app. Discuss working with audio, video, camera, and other media functionalities.
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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!
AVAudioFormat has no Swift concurrency annotations but the documentation states "Instances of this class are immutable."
This made me always assume it was safe to pass AVAudioFormat instances around. Is this the case? If so can it be marked as Sendable? Am I missing something?
Hello,
I have a CarPlay Navigation app and utilize the AVSpeechSynthesizer to speak directions to a user. Everything works great on my CarPlay simulator as well as when plugged into my GMC truck. However, I found out yesterday that one of my users with a Ford truck the audio would cut in an out.
After much troubleshooting, I was able to replicate this on my own truck when using Bluetooth to connect to CarPlay. My user was also utilizing Bluetooth. Has anyone else experienced this? Is there a fix to the problem?
import SwiftUI
import AVFoundation
class TextToSpeechService: NSObject, ObservableObject, AVSpeechSynthesizerDelegate {
private var speechSynthesizer = AVSpeechSynthesizer()
static let shared = TextToSpeechService()
override init() {
super.init()
speechSynthesizer.delegate = self
}
func configureAudioSession() {
speechSynthesizer.delegate = self
do {
try AVAudioSession.sharedInstance().setCategory(.playback, mode: .voicePrompt, options: [.mixWithOthers, .allowBluetooth])
} catch {
print("Failed to set audio session category: \(error.localizedDescription)")
}
}
func speak(_ text: String) {
Task(priority: .high) {
let speechUtterance = AVSpeechUtterance(string: text)
speechUtterance.voice = AVSpeechSynthesisVoice(language: AVSpeechSynthesisVoice.currentLanguageCode())
try AVAudioSession.sharedInstance().setActive(true, options: .notifyOthersOnDeactivation)
speechSynthesizer.speak(speechUtterance)
}
}
func speechSynthesizer(_ synthesizer: AVSpeechSynthesizer, didFinish utterance: AVSpeechUtterance) {
Task {
stopSpeech()
try AVAudioSession.sharedInstance().setActive(false)
}
}
func stopSpeech() {
speechSynthesizer.stopSpeaking(at: .immediate)
}
}
Hello,
I have an iOS camera app that captures exposure brackets and performs custom HDR processing.
On iOS 26, I’m observing a visual difference between:
a single photo captured at –2 EV, and the –2 EV frame from an exposure bracket (–2 / 0 / +2 EV).
On iOS 26:
The single –2 EV image looks natural and consistent.
The –2 EV image from the bracket appears clamped / distorted, most noticeably in high dynamic range scenes (highlight compression and loss of detail).
On iOS 18, both approaches produce visually identical and correct –2 EV images.
The issue only appears for bracketed captures on iOS 26.
Attachments (examples)
iOS 26
Single capture –2 EV (JPEG):
/Users/danilobudimir/Downloads/ios26SingleImage/JPEG image-4006-8B77-51-0.jpeg
Single capture –2 EV — Capture report (dumped settings):
/Users/danilobudimir/Downloads/ios26SingleImage/UnderExposureDebug_CaptureReport_2026-01-09T15-59-20Z.md
Bracket capture –2 EV frame (JPEG):
/Users/danilobudimir/Downloads/bracket_iOS26/JPEG image-45CE-9793-A5-0.jpeg
Bracket capture — Capture report (dumped settings):
/Users/danilobudimir/Downloads/bracket_iOS26/UnderExposureDebug_CaptureReport_2026-01-09T15-55-42Z.md
iOS 18
Single capture –2 EV (JPEG):
/Users/danilobudimir/Downloads/ios18SingleImage/JPEG image-47FD-AF73-28-0.jpeg
Single capture –2 EV — Capture report:
/Users/danilobudimir/Downloads/ios18SingleImage/UnderExposureDebug_CaptureReport_2026-01-09T16-25-27Z.md
Bracket capture — –2 EV frame (JPEG):
/Users/danilobudimir/Downloads/bracket_iOS18/JPEG image-4A4C-9E93-46-0.jpeg
Bracket capture — Capture report:
/Users/danilobudimir/Downloads/bracket_iOS18/UnderExposureDebug_CaptureReport_2026-01-09T16-27-23Z.md
Question
Is there any new behavior in iOS 26 AVFoundation related to:
AVCapturePhotoBracketSettings,
tone mapping / HDR preprocessing,
or internal image processing applied specifically to bracketed frames?
Is there a new flag, format requirement or opt-out mechanism required to preserve linear underexposed frames in exposure brackets?
I'm adopting Liquid Glass in iOS 26, when I try to test VNDocumentCameraViewController with document scanning after Liquid Glass enabled, there's a crash just after a photo is taken in VNDocumentCameraViewController, here's the screenshot when it crashed
The exception output in XCode console is this:
*** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Layout requested for visible navigation bar, <UINavigationBar: 0x1240bde00; frame = (0 117; 390 54); opaque = NO; tintColor = UIExtendedSRGBColorSpace 1 1 0 1; layer = <CALayer: 0x120c21e60>> standardAppearance=0x12407b900 scrollEdgeAppearance=0x12407bb80 compactAppearance=0x12407b880 no-scroll-edge-support, when the top item belongs to a different navigation bar. topItem = <UINavigationItem: 0x1240bd800> style=navigator leftBarButtonItems=0x123d4e5f0 rightBarButtonItems=0x123d4d5a0, navigation bar = <UINavigationBar: 0x107b9ad00; frame = (0 47; 390 54); opaque = NO; autoresize = W; tintColor = UIExtendedSRGBColorSpace 1 1 0 1; layer = <CALayer: 0x120c20150>> delegate=0x10a805200 standardAppearance=0x107b2c300 scrollEdgeAppearance=0x107b2c280 compactAppearance=0x107b2c100, possibly from a client attempt to nest wrapped navigation controllers.'
*** First throw call stack:
(0x18e1db994 0x18b0f5814 0x18c092aa0 0x193b18660 0x193a7d540 0x193a7e020 0x1953ec4a0 0x1943b7d78 0x18ed83420 0x18ed82f74 0x18eb83134 0x18eb44c10 0x18eb70bc4 0x18eb7e74c 0x193ac8cd0 0x193ac8c04 0x193ad6afc 0x193ad5f8c 0x27b456560 0x18e12c4cc 0x18e15c0b0 0x18e15bfd8 0x18e133c1c 0x18e132a6c 0x22ed54498 0x193af6ba4 0x193a9fa78 0x193bcb68c 0x102cc2718 0x102cc2688 0x102cc2794 0x18b14ae28)
libc++abi: terminating due to uncaught exception of type NSException
Hi,
I understand that AVPlayer/AVFoundation doesn’t natively play MPEG-DASH manifests (.mpd) today, while HLS is supported and widely documented by Apple.
I’m not asking for roadmap commitments, but I’d like to understand whether there is any publicly documented rationale for not supporting DASH/MPD in AVFoundation (e.g., technical constraints, platform integration, DRM ecosystem, power/performance considerations, etc.).
Questions:
Is there any Apple statement / documentation explaining why DASH (MPD) isn’t supported in AVFoundation?
Is Apple’s recommended approach still “provide HLS for Apple clients” (potentially sharing CMAF segments and generating separate manifests)?
If there’s no public rationale, is filing Feedback Assistant the best channel for requesting MPD playback support?
Thanks!
I am developing an app that plays HLS audio.
When using AVPlayerItem with AVURLAsset, can AVAssetResourceLoaderDelegate correctly handle HLS segments?
My goal is to use AVAssetResourceLoaderDelegate to add authentication HTTP headers when accessing HLS .m3u8 and .ts files.
I can successfully download the files, but playback fails with errors.
Specifically, I am observing the following cases:
A. AVAssetResourceLoaderDelegate is canceled, and CoreMediaErrorDomain -12881 occurs
In NSURLConnectionDataDelegate’s didReceiveResponse method, set contentInformationRequest
In didReceiveData, call dataRequest respondWithData
resourceLoader didCancelLoadingRequest is called
CoreMediaErrorDomain -12881 occurs
B. CoreMediaErrorDomain -12881 occurs
In NSURLConnectionDataDelegate’s didReceiveResponse method, set contentInformationRequest
In connection didReceiveData, buffer all received data until the end
In connectionDidFinishLoading, pass the buffered data to respondWithData
Call loadingRequest finishLoading
CoreMediaErrorDomain -12881 occurs
In both cases, dataRequest.requestsAllDataToEndOfResource is YES.
For this use case, I am not using AVURLAssetHTTPHeaderFieldsKey because I need to apply the most up-to-date authentication data at the moment each file is accessed.
I would appreciate any advice or suggestions you might have. Thank you in advance!
The two ScreenCaptureKit WWDC22 sessions show how to capture with the new framework but the retina factor is hardcoded to 2 in SCStreamConfiguration.
When using on a non-retina display, the screencapture is floating on the upper-left corner of the image buffer.
There does not seem to be a simple way to retrieve the retina factor from the SCShareableContent data (when configuring the capture).
When processing the streaming output, the SCStreamFrameInfo attachment is supposed to have a scaleFactor property but .scaleFactor does not return a value.
I have found out that the attachement dictionary contains SCStreamUpdateFrameDisplayResolution. This entry gives me the retina factor but it is not an official SCStreamFrameInfo key. I list the keys to access it.
What is the proper way with ScreenCapture to handle the retina factors ?
Hello, I am developing a custom player SDK using AVPlayer to support HLS and LL-HLS live streaming. I have some questions about the internal logic of AVPlayer regarding ABR, as this information is not explicitly covered in the documentation.
ABR Switching Logic: Does AVPlayer trigger bitrate switching primarily based on stall occurrences (buffer starvation)? I am curious if the switching logic is reactive to stalls or if it proactively switches to prevent them based on throughput estimation.
Developer Controls for ABR: To influence or control the ABR selection, are preferredPeakBitRate and preferredForwardBufferDuration the only properties available to developers? Are there any other recommended APIs to assist with ABR decisions?
Thank you for your help.
I'm writing a simple app for iOS and I'd like to be able to do some text to speech in it. I have a basic audio manager class with a "speak" function:
import Foundation
import AVFoundation
class AudioManager {
static let shared = AudioManager()
var audioPlayer: AVAudioPlayer?
var isPlaying: Bool {
return audioPlayer?.isPlaying ?? false
}
var playbackPosition: TimeInterval = 0
func playSound(named name: String) {
guard let url = Bundle.main.url(forResource: name, withExtension: "mp3") else {
print("Sound file not found")
return
}
do {
if audioPlayer == nil || !isPlaying {
audioPlayer = try AVAudioPlayer(contentsOf: url)
audioPlayer?.currentTime = playbackPosition
audioPlayer?.prepareToPlay()
audioPlayer?.play()
} else {
print("Sound is already playing")
}
} catch {
print("Error playing sound: \(error.localizedDescription)")
}
}
func stopSound() {
if let player = audioPlayer {
playbackPosition = player.currentTime
player.stop()
}
}
func speak(text: String) {
let synthesizer = AVSpeechSynthesizer()
let utterance = AVSpeechUtterance(string: text)
utterance.voice = AVSpeechSynthesisVoice(language: "en-GB")
synthesizer.speak(utterance)
}
}
And my app shows text in a ScrollView:
ScrollView {
Text(self.description)
.padding()
.foregroundColor(.black)
.font(.headline)
.background(Color.gray.opacity(0))
}.onAppear {
AudioManager.shared.speak(text: self.description)
}
However, the text doesn't get read out (in the simulator). I see some output in the console:
Error fetching voices: Swift.DecodingError.dataCorrupted(Swift.DecodingError.Context(codingPath: [], debugDescription: "Invalid container metadata for _UnkeyedDecodingContainer, found keyedGraphEncodingNodeID", underlyingError: nil)). Using fallback voices.
I'm probably doing something wrong here, but not sure what.
Topic:
Media Technologies
SubTopic:
Audio
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
I'm receiving output from avcapturesession and capturing an image using Vision, but the image is output in landscape orientation instead of portrait.
Even when I set the orientation to up in ciimage, cgimage, and uiimage, the image is still output in landscape orientation.
On iPhones 16 and below, the image is output in portrait orientation.
But on iPhones 17 and above, the image is output in landscape orientation.
Please help.
Hi
We’re updating our KSM to support SPC v2/v3 and currently operate with both legacy SDK4 credentials (ASK + 1024 cert) and SDK26 credentials (certificate bundle + provisioning data + 1024/2048 keys).
Our client apps run across a wide range of iOS/tvOS versions, so we want to follow Apple’s recommended client strategy for certificate selection. The docs describe SHA‑1 vs SHA‑256 in the SPC header, but do not specify which OS versions should use SDK4 vs SDK26 credentials.
Could you clarify:
Is there an official minimum iOS/tvOS version where you recommend SDK26 credentials for client apps?
For older OS versions (e.g. iOS 15), is SDK4 still the recommended choice for client apps?
Are there any official migration guidelines for client apps moving from SDK4 to SDK26 credentials?
Thanks in advance.
Hello Apple team and developer community,
I am preparing a visionOS app for a fair environment, where we want to automatically stream the current experience to a nearby monitor via AirPlay, without requiring guests or staff to manually interact with the Control Center or AirPlay pickers all the time.
The goal is to provide a smooth, frictionless setup so attendees can focus on the demo, not the configuration.
Feature Request:
A supported API or method to programmatically start/stop AirPlay video streaming (mirroring or external playback) from within a visionOS app, allowing the current experience to be instantly displayed on an external monitor or Apple TV for the audience.
Context & Rationale:
In a trade fair or exhibition setting, rapid guest turnaround and minimal staff intervention are crucial. Having to manually guide each visitor through AirPlay setup is impractical.
As I understood, AVRoutePickerView can be used for this on iOS/macOS, but this is not available in visionOS. Enabling similar automated streaming on visionOS would make the device far more suitable for live demos and public showcases.
Questions:
Are there any supported workarounds or best practices for enabling automated screen streaming or AirPlay initiation on visionOS in public demo environments that I missed?
Is Apple considering adding programmatic AirPlay control or accessibility features to support such use cases in future visionOS releases?
Thank you for considering this request! If there are recommended patterns, entitlements, or accessibility solutions we could explore for trade fair scenarios, your guidance would be greatly appreciated.
Best regards,
Julian Zürn - IPI, HS Kempten
Hello everyone,
I'm working on implementing a screen sharing feature using RPSystemBroadcastPickerView and a Broadcast Upload Extension to share the entire app screen in an iOS application.
The Broadcast Upload Extension is set up following Apple's ReplayKit guidelines. However, I’m encountering an issue during the broadcast startup sequence:
❗ Problem Description
The Screen Broadcast UI appears as expected
I tap “Start Broadcast”
The countdown (3 → 2 → 1) completes
Then it immediately reverts to the "Start Broadcast" screen, and screen sharing does not begin
No error messages are displayed
None of the extension lifecycle methods (broadcastStarted(withSetupInfo:), processSampleBuffer, etc.) are called
There are no logs or crash reports, neither in the main app nor in the extension
✅ What Has Been Verified
Info.plist of the Broadcast Upload Extension includes:
NSExtensionPointIdentifier = com.apple.broadcast-services-upload
NSExtensionPrincipalClass set correctly
RPBroadcastProcessMode = RPBroadcastProcessModeSampleBuffer
preferredExtension is set properly to the extension’s bundle identifier
Extension is listed in the main app's build settings under "Frameworks, Libraries, and Embedded Content"
⚠️ Additional Concern
We noticed that in Xcode (latest version), the Broadcast Upload Extension is listed under "Embedded Frameworks" with the setting "Embed Without Signing", and there is no option to change it to "Embed & Sign". We're wondering if this could be the reason the extension fails to launch correctly at runtime, despite being detected by the broadcast picker.
❓ Questions
Has anyone faced similar issues where the broadcast never starts despite correct setup?
Could the "Embed Without Signing" be causing the system to silently cancel or ignore the extension at runtime?
Are there any provisioning profile or entitlement requirements specific to Broadcast Upload Extensions that might trigger this behavior silently?
Any insights, suggestions, or workarounds would be greatly appreciated.
Thank you in advance!
When using AVSampleBufferDisplayLayer to play uncompressed H.264 and H.265 video with B-frames more than 7, frame drops occur. The more B-frames there are, the more noticeable the frame drops become, for example 15 bframes.
Use FFmpeg to transcode a video file with visible timestamps and frame numbers (x264 or x265 ):
ffmpeg -i test.mp4 -vf "drawtext=fontsize=45:text=%{pts} %{n}:y=400" -c:v libx264 -x264-params "bframes=15:b-adapt=0" -crf 30 -y x264_bf15.mp4
ffmpeg -i test.mp4 -vf "drawtext=fontsize=45:text=%{pts} %{n}:y=400" -c:v libx265 -x265-params "bframes=15:b-adapt=0" -crf 30 -y x265_bf15.mp4
Use the demo player from this repository to reproduce the issue: https://github.com/msfrms/CustomPlayer
frame drops can be observed. And following log can be found in devices console.
mediaserverd <<<< IQ-CA >>>> piqca_gmstats_dump: FIQCA(0x1266f4000) recent frames: enqueued: 184, displayed: 138, dropped: 42, flushed: 0, evicted: 3, >16ms late: 2
PS. I was using iphone11 iOS14.6, to replay this issue.
May I ask why frame drops occur in this case?
Is there any configuration or API usage change that could help fix the frame drop issue?
Many thanks!
Hello,
I am developing a video streaming service that uses FairPlay. Since around February 20th, we have started receiving reports of CoreMediaErrorDomain -42709 errors.
Unfortunately, there is no documentation from Apple that explains what this error means, so we are not sure how to address or fix the issue.
Most of the users who reported this error are using iOS 18.2.1 and iOS 18.3.1.
Could you please advise on what we should check or how we might resolve this error?
Is it possible to stream video from a UVC (USB Video Class) camera on an iPhone 15? If so, are there any specific hardware or software requirements to enable this functionality?
For iOS17 we've had no problem playing Apple Fairplay encrypted content with keys delivered from our key server running on FairPlay Streaming Server SDK 5.1 and subsequently FairPlay Streaming Server SDK 26. It's built and deployed using Xcode Version 26.1.1 (17B100) with no changes to the code and - as expected - the content continued to be successfully decrypted and played (so far so good). However, as soon as a device was updated to iOS26, that device would no longer play the encrypted content.
Devices remaining on iOS17 continue to work normally and the debugging logs are a sanity-check that proves that. Is anyone else experiencing this issue?
Here's the code (you should be able to drop it into a fresh iOS Xcode project and provide a server url, content url and certificate).