Our license service is based on version 4.5.4 and we make use of sample .c/.h files for building license service. We are told that version 4.5.4 is going to be deprecated in 2026 and we should migrate to latest SDK version 26. When explored the SDK, we noticed that only python and Swift based SDk is provided. Does Apple also provide C/C++ based SDK as it is going to easier for us to integrate. If yes, please share the SDK package and sample license service solution.

We are trying to port our code to Apple TV on tvosVersion 17.6 while running the sample we are getting error CoreMediaErrorDomain error -42681. We understand that this error occurs when the FairPlay license (CKC) returned by the server contains incompatible or malformed version information that the iOS/tvOS FairPlay CDM cannot parse. Can you please specify tvos 17.6 expect what fairplay version number or what fields are mandartory for fps version metadata ?

We have the application 'ADS Smart', a companion application for our ADS Dashcam. We offer a feature that lets users stream the live footage of the dashcam cameras through the app. Currently, we are experiencing a time delay of 30+ seconds to see the live stream, i.e the first frame of the live footage is taking around 30+ seconds to display in the app. We are using the MobileVLCKit library to stream the videos in the app. The current flow of the code, Flutter triggers the native playback via a method channel The Dart side calls the iOS method channel <identifier_name>/ts_player with method playTSFromURL passing: url(e.g rtsp://.... for live), playerId viewId (stable ID used to host native UI) showControls optional localIp AppDelegate receives the call and prepares networking Entry point: AppDelegate.tsChannel handler for "playTSFromURL" in AppDelegate.swift. It resolves the Wi‑Fi interface and local IP if possible: Sets VLC_SOURCE_ADDRESS to the Wi‑Fi IP (when available) to prefer Wi‑Fi for the stream. Uses NWPathMonitor and direct interface inspection to find the Wi‑Fi interface (e.g., en0) and IP. Kicks off best-effort route priming to the dashcam IP/ports (non-blocking), see establishWiFiRoutePriority. AppDelegate chooses the right player implementation createPlayerForURL(_: ) decides: RTSP(rasp://..) --> use VLCKit-backed player (class TSStreamPlayer -> TSStreamPlayer class provides a VLC-backed video player for iOS, handling playback of Transport Stream(TS) URLs with strict main-thread UI updates, view safety, and stream management, using MobileVLCKit) .ts files --> use VLCKit-based player for playing already recorded videos in the app. If the selected player supports extras (e.g. TSStreamPlayerExtras), it sets LocalIP (if resolved) Wi-fi interface name AppDeletegate creates the native 'platform view' container and overlay platformView(for:parent:showControls:): Creates a container UIView attached to the Flutter root view Adds a dedicated child videoHost[viewId]-the host UIView for rendering video. If showControls == true, adds TSPlayerControlsOverlay over the video and wires overlay callbacks back to the Flutter via controlChannel (/player_controls) If showControls == false, adds a minimal back button and wires it to onGalleryBack. The player starts playback inside the host view Class player.playTSFromURL(urlString, in:host){ success, error in...} on the main thread. For RTSP/TS streams: this is handled by TSStreamPlayer(VLCKit). Success/failure is reported back to Flutter The completion closure invoked in step 5 returns true on first real playback or an error message on failure. The method channel result responds: true --> Flutter knows playback started FlutterError -> Flutter can show an error Stopping and cleanup "stop" on tsChannel stops and disposes the player(s). "removePlatformView" removes the overlay, back button, the host, and the container, and disposes any remaining players. I am attaching the logs of the app while running. The actual issue happening is that when the iOS device is connected to the dashcam's Wi-Fi, for the app's live streaming-related information, the iOS is using Mobile Data even though the wifi is the main communication channel. The iOS device takes approximately 30 seconds to display the first frame of live footage in the app. Despite being connected to the dashcam’s Wi-Fi, the iOS device sets the value of ES (en0) to Wi-Fi after multiple attempts, causing the live footage to appear in the app after this delay. So, how can we set up the configuration to display the live footage from the dashcam cameras within just 2 to 3 seconds in the iOS device? ios.txt

We're troubleshooting SCK issues. They occur with a relatively small amount of sessions, but lack of context and/or ability to advise the customer on how they could make behavior more predictable and reliable is problematic. Generally, there is 2 distinct issues which may or may not have the same root cause: Failure to establish SCK session. Usually manifests within the app as SCShareableContent.getWithCompletionHandler call either never invoking the completion handler, or taking prohibitively long time (we usually give it 3-10 sec before giving up). In the system log it may look like this: (log omitted - suspecting it triggers the content filter) Note the 6 seconds delay to completion of fetchShareableContentWithOption (normally it's a 30-40ms operation). Sometime, we'd see the stream established, but some minutes (or even hours) into the recording we'd stop receiving frames. Both scenarios are likely to occur when the disk space is low, with reliable repro of the problem #2 at below 8gb of free space (in that case, we've seen replayd silently dropping the session, without ever notifying the client ... improving API could go a long way there). However, out of recent occurrences, while most have less than 100GB available, we've seen it on machines with as much as 500GB free. Unfortunately, it's almost never reproducible in dev environment, so we have to rely on diagnostics we're able to collect in the field -- which nothing obvious yet. I'd like to understand the root cause of both scenarios better and/or how what specific frameworks can cause these behaviors.

I want develop an app for real-time streaming spatial video transmission from an Apple Vision Pro to another Apple Vision Pro and play, like MV-HEVC, does it's possible? If it's possible how to make it?

The ASk is used by the KSM to derive the dASk, which is then used to decrypt the SK...R1. If the only thing we give the client is the certificate, how does it encrypt the SK...R1 so the server is able to process it. Would be nice to know it it works generally, because I've been getting questions about it and can't provide a helpful answer. Thanks in advance.

Hello, I have implemented Low-Latency Frame Interpolation using the VTFrameProcessor framework, based on the sample code from https://developer.apple.com/kr/videos/play/wwdc2025/300. It is currently working well for both LIVE and VOD streams. However, I have a few questions regarding the lifecycle management and synchronization of this feature: 1. Common Questions (Applicable to both Frame Interpolation & Super Resolution) 1.1 Dynamic Toggling Do you recommend enabling/disabling these features dynamically during playback? Or is it better practice to configure them only during the initial setup/preparation phase? If dynamic toggling is supported, are there any recommended patterns for managing VTFrameProcessor session lifecycle (e.g., startSession / endSession timing)? 1.2 Synchronization Method I am currently using CADisplayLink to fetch frames from AVPlayerItemVideoOutput and perform processing. Is CADisplayLink the recommended approach for real-time frame acquisition with VTFrameProcessor? If the feature needs to be toggled on/off during active playback, are there any concerns or alternative approaches you would recommend? 1.3 Supported Resolution/Quality Range What are the minimum and maximum video resolutions supported for each feature? Are there any aspect ratio restrictions (e.g., does it support 1:1 square videos)? Is there a recommended resolution range for optimal performance and quality? 2. Frame Interpolation Specific Questions 2.1 LIVE Stream Support Is Low-Latency Frame Interpolation suitable for LIVE streaming scenarios where latency is critical? Are there any special considerations for LIVE vs VOD? 3. Super Resolution Specific Questions 3.1 Adaptive Bitrate (ABR) Stream Support In ABR (HLS/DASH) streams, the video resolution can change dynamically during playback. Is VTLowLatencySuperResolutionScaler compatible with ABR streams where resolution changes mid-playback? If resolution changes occur, should I recreate the VTLowLatencySuperResolutionScalerConfiguration and restart the session, or does the API handle this automatically? 3.2 Small/Square Resolution Issue I observed that 144x144 (1:1 square) videos fail with error:   "VTFrameProcessorErrorDomain Code=-19730: processWithSourceFrame within VCPFrameSuperResolutionProcessor failed" However, 480x270 (16:9) videos work correctly. minimumDimensions reports 96x96, but 144x144 still fails. Is there an undocumented restriction on aspect ratio or a practical minimum resolution? 3.3 Scale Factor Selection supportedScaleFactors returns [2.0, 4.0] for most resolutions. Is there a recommended scale factor for balancing quality and performance? Are there scenarios where 4.0x should be avoided? The documentation on this specific topic seems limited, so I would appreciate any insights or advice. Thank you.

Hello, I am reviewing the sample codes of FairPlay Streaming SDK 26 and there was a place where I think is a mistake. The codes are for the server, for both Swift and Rust codes. There is an if statement which compares "ProtocolVersionUsed"(spcData.versionUsed) and SPCVersion1 constant, though "ProtocolVersionUsed" and SPC Version is a different thing, so shouldn't it be using a different constant value? [createContentKeyPayload.swift] // Fallback to version 1 if content can have encrypted slice headers, which need to be decrypted separately. Slice headers are not encrypted when using CBCS. if serverCtx.spcContainer.spcData.versionUsed == base_constants.SPCVersion.v1.rawValue && [createContentKeyPayload.rs] // Fallback to version 1 if content can have encrypted slice headers, which need to be decrypted separately. Slice headers are not encrypted when using CBCS. if (serverCtx.spcContainer.spcData.versionUsed == SPCVersion::v1 as u32) && Thank you.

Hi, Has anyone been able to protect the audio part of FairPlay protected content from being captured as part of screen recording on Safari/iOS (PWA and/or online web app)? We have tried many things but could not prevent the audio from being recorded. Same app and content on Safari/Mac does not allow audio to be recorded. Any tips?

Hello! My name is Mason Prather. I'm a graduate student at Kennesaw State University and a Research Engineer working in XR environments through my Graduate Research Assistant role. I’m currently building a research prototype that connects a mobile companion application to a VR headset. The mobile application is built in Unity and deployed on iOS, and it streams video frames to a remote Unity client using WebRTC. Environment Device: iPhone 15 OS: iOS 26.3 (tested on physical device, not Simulator) Engine: Unity 2022.3.57f1 Graphics API: Metal Streaming Technology: WebRTC (Unity WebRTC package) Architecture: Mobile Unity app streaming video frames to a remote Unity client Receiver Device: Meta Quest Pro headset (Unity application) Networking: LAN (UDP discovery + TCP signaling) Video Source: Unity RenderTexture Goal The goal of the system is to allow a VR user to view media stored on their phone inside a VR environment. The iOS app: renders or captures media content converts frames into a WebRTC video track streams the video to the headset Current Status Connection setup works correctly. Observed behavior: Signaling connection successful ICE candidate exchange successful PeerConnection state becomes Connected Video track created successfully However, the receiving application displays black frames. iOS App Details The video source originates from a Unity RenderTexture. Inside the phone application: RenderTexture displays correctly Frames appear correct locally But the receiving peer does not display the frames. Relevant Components Unity WebRTC package iOS Metal rendering pipeline Custom TCP signaling LAN discovery via UDP Expected Behavior Rendered frames should transmit via WebRTC and appear on the remote device. Actual Behavior The remote video track is active, but the rendered frames appear black on the receiving client. Questions Are there known issues involving Unity WebRTC + iOS Metal texture capture? Are there specific pixel format requirements when streaming textures from Unity on iOS? Could the issue relate to texture readback limitations or GPU synchronization? I am more than happy to provide screenshots and console logs upon request. If anyone has experience streaming Unity video frames via WebRTC on iOS, I would greatly appreciate any guidance.

Summary On iOS 26, HLS alternate audio track selection behaves inconsistently on both VOD and live streams: the French track falls back to the DEFAULT=YES (English) track after manual selection, and in some cases switching to a non-default track appears to work but it is then impossible to switch back to English. Environment iOS version: 26 Players affected: native Safari on iOS 26 and THEOplayer (issue also reproducible on THEOplayer's own demo page) Stream type: HLS/CMAF with demuxed alternate audio renditions (CMFC container) Affected stream types: both VOD and live streaming Issue NOT present on iOS 17/18 Manifest #EXTM3U #EXT-X-VERSION:4 #EXT-X-INDEPENDENT-SEGMENTS #EXT-X-STREAM-INF:BANDWIDTH=8987973,AVERAGE-BANDWIDTH=8987973,VIDEO-RANGE=SDR,CODECS="avc1.640028",RESOLUTION=1920x1080,FRAME-RATE=29.970,AUDIO="program_audio" video_1080p.m3u8 #EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="program_audio",LANGUAGE="en",ASSOC-LANGUAGE="en",NAME="English",AUTOSELECT=YES,DEFAULT=YES,CHANNELS="2",URI="audio_ENG.m3u8" #EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="program_audio",LANGUAGE="de",ASSOC-LANGUAGE="de",NAME="Deutsch",AUTOSELECT=YES,DEFAULT=NO,CHANNELS="2",URI="audio_DEU.m3u8" #EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="program_audio",LANGUAGE="fr",ASSOC-LANGUAGE="fr",NAME="Francais",AUTOSELECT=YES,DEFAULT=NO,CHANNELS="2",URI="audio_FRA.m3u8" Steps to Reproduce Load the HLS manifest (VOD or live) in Safari on iOS 26, or in any AVFoundation-backed player Start playback — English plays correctly as DEFAULT Manually select "Francais" from the audio track selector Observe that English audio continues playing (French does not play) In a separate scenario: manually select "Deutsch" — German plays correctly Attempt to switch back to English — English does not resume; audio remains on the previously selected track Expected behavior Selecting any track should immediately switch to that language Switching back to English (DEFAULT=YES) should work at any time Behavior should be consistent across VOD and live streams Actual behavior Two distinct anomalies observed, reproducible on both VOD and live streams, in both native Safari and THEOplayer: French-specific fallback: selecting the French track causes playback to fall back to English. This does not happen with German. Cannot return to English: in cases where a non-default track plays correctly, attempting to switch back to the DEFAULT=YES track (English) fails — the previous non-default track continues playing. The fact that the issue reproduces in native Safari confirms this is an AVFoundation/WebKit-level regression, not a third-party player bug. What we have already verified and ruled out LANGUAGE codes are BCP-47 compliant (en, fr, de) ✓ EXT-X-VERSION:4 is present ✓ Audio codec removed from STREAM-INF CODECS (video-only) ✓ ASSOC-LANGUAGE attribute added matching LANGUAGE value ✓ Container metadata verified via ffprobe: mdhd box correctly contains language tags (e.g. "fra") ✓ Audio segment content verified via ffplay: correct audio in each language file ✓ French audio source file contains correct French audio content ✓ Issue reproduces in native Safari on iOS 26, confirming it is not a THEOplayer-specific bug Issue does NOT reproduce on iOS 17/18 with the same manifest and segments Additional notes The VOD stream is packaged with AWS MediaConvert, CMAF output group, SEGMENTED_FILES, AAC-LC codec (mp4a.40.2), 128kbps, 48kHz stereo. English uses AudioTrackType ALTERNATE_AUDIO_AUTO_SELECT_DEFAULT; French and German use ALTERNATE_AUDIO_AUTO_SELECT. The live stream uses AWS MediaPackage with a similar CMAF/HLS output configuration. Please advise whether this is a known regression in AVFoundation on iOS 26 and whether a fix is planned.

Hi, Our client currently has an FPS deployment certificate generated with SDK version 4 that is still actively used in production. They would like to generate an additional certificate using SDK version 26. Before doing so, they just want to confirm: Will the existing SDK 4 certificate remain unaffected and still visible in the Apple Developer portal? Any considerations they should keep in mind? Thanks! :)

Hi, Our client currently has an FPS deployment certificate generated with SDK version 4 that is still actively used in production. They would like to generate an additional certificate using SDK version 26. Before doing so, they just want to confirm: Will the existing SDK 4 certificate remain unaffected and still visible in the Apple Developer portal? Any considerations they should keep in mind? Thanks!