axiom-media

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Author updated Aug 25, 2026, 02:29 AM
Author repo Axiom

Interpretation is structured for decision-making; original keeps the upstream SKILL.md unchanged.

Decide Fit First

Core job: Use when working with camera, photos, audio, haptics, ShazamKit, or Now Playing. Covers AVCaptureSession, PHPicker, PhotosPicker…
Best fit: Use it when the task has reusable inputs, steps, and validation criteria rather than a one-off answer.
Avoid forcing it: If the source lacks commands, platform support, or external-service evidence, keep those fields unknown instead of guessing.

Design Intent

Structure: The skill is organized around “Cursor Subagent Routing”, “Quick Reference”, “Decision Tree”, “Cross-Domain Routing”, showing how the author expects the agent to judge fit, collect context, and produce verifiable output.
Trigger evidence: Prioritize the author’s wording around when to use it, what context to collect, and what output shape to produce.
Evidence boundary: Author text states facts, repository files prove commands and paths, and Fluxly only adds fit, limits, and usage judgment.

How To Use It

Inputs: Provide target material, scope, expected result, forbidden changes, and validation method.
Invocation: Name axiom-media directly; if the source includes slash commands, start with the command and then add task context.
Validation: Start small and check whether the result follows “Cursor Subagent Routing / Quick Reference / Decision Tree” before expanding.

Boundaries And Review

Dependencies: It usually needs no extra API key, so start with a small validation task.
Permissions: Declared permissions include read / write; ask the agent to state file, command, and rollback boundaries before acting.
Quality bar: A useful result names the deliverable, evidence, and next action. Generic prose means the task needs tighter context.

Media

You MUST use this skill for ANY camera, photo, audio, haptic, or media playback work.

Cursor Subagent Routing

Delegate to the appropriate Cursor subagent when this router calls for a specialized auditor.

Quick Reference

Symptom / Task	Reference
Camera capture, AVCaptureSession	See `skills/camera-capture.md`
Slow camera launch / deferred start (iOS 26+), ProRes recording via Pro Video Storage (`OS27`)	See `skills/camera-capture.md` Patterns 8-9
Camera API (RotationCoordinator, etc.)	See `skills/camera-capture-ref.md`
Center Stage front camera (iPhone 17), dynamic aspect ratio, smart framing, 24/48 MP capture	See `skills/camera-capture-ref.md`
Camera freezes, black preview, rotation	See `skills/camera-capture-diag.md`
Photo pickers, library access	See `skills/photo-library.md`
PHPicker, PhotosPicker API reference	See `skills/photo-library-ref.md`
PhotoKit + Swift 6 strict concurrency, `nonisolated` observer, `performChanges` isolation, `_dispatch_assert_queue_fail`	See axiom-concurrency (skills/isolation-inheritance-diag.md)
Audio, AVFoundation, spatial audio	See `skills/avfoundation-ref.md`
Video write/export/playback, sample-buffer engine, resumable export, Apple Log 2, iOS 27 deprecations (`OS27`)	See `skills/avfoundation-video-ref.md`
Audio recognition, ShazamKit	See `skills/shazamkit.md`
ShazamKit API reference	See `skills/shazamkit-ref.md`
On-device music analysis (key, tempo, structure, loudness), MusicUnderstanding (`OS27`)	See `skills/music-understanding.md`
On-device face grouping (cluster faces into people across a library), video highlights/key frames, MediaIntelligence (`OS27`)	See `skills/media-intelligence.md`
Haptic feedback, Core Haptics	See `skills/haptics.md`
SharePlay coordinated playback, AVDelegatingPlaybackCoordinator, custom-engine sync	See `skills/shareplay-playback.md`
SharePlay session lifecycle, activation, non-media state	Use axiom-integration (`skills/shareplay.md`) instead
Now Playing metadata, remote commands	See `skills/now-playing.md`
Animated lock-screen artwork (iOS 26+)	See `skills/now-playing.md` Pattern 8
NowPlaying framework (`import NowPlaying`, Swift-native `MediaSession`, `OS27`)	See `skills/now-playing.md` (NowPlaying Framework section)
Cast / route media to non-AirPlay devices (Google Cast/Chromecast, DLNA) as system routes, AVSystemRouting (`iOS27`, EU-gated/beta)	See `skills/system-media-routing.md`
Screen capture / recording / streaming the screen or your own app, ScreenCaptureKit (`OS27` — new on iOS/iPadOS/tvOS/visionOS 27; macOS 12.3+)	See `skills/screen-capture.md`
CarPlay HIG, app categories, design rules, entitlements	See `skills/carplay-hig.md`
CarPlay templates reference (all 12 templates, availability matrix, depth limits)	See `skills/carplay-templates-ref.md`
CarPlay navigation reference (base view, route guidance, cluster/HUD, multitouch, voice prompts, map panels + EV charging iOS 27)	See `skills/carplay-navigation-ref.md`
CarPlay Now Playing template customization + sports mode	See `skills/now-playing-carplay.md`
MusicKit Now Playing	See `skills/now-playing-musickit.md`
DockKit motorized stands / gimbals, subject tracking, custom motor control	See `skills/dockkit.md`
Speech-to-text / transcription (SpeechAnalyzer, mic → transcript)	Invoke axiom-ai (`skills/ios-ml.md`)

Decision Tree

digraph media {
    start [label="Media task" shape=ellipse];
    what [label="Which media feature?" shape=diamond];

    start -> what;
    what -> "skills/camera-capture.md" [label="camera capture"];
    what -> "skills/photo-library.md" [label="photo pickers\n/ library"];
    what -> "skills/avfoundation-ref.md" [label="audio / AVFoundation"];
    what -> "skills/avfoundation-video-ref.md" [label="video write/export\n/ sample-buffer (OS27)"];
    what -> "skills/shazamkit.md" [label="ShazamKit\n/ audio recognition"];
    what -> "skills/music-understanding.md" [label="music analysis\n(key/tempo/structure)"];
    what -> "skills/media-intelligence.md" [label="face grouping /\nvideo highlights (OS27)"];
    what -> "skills/haptics.md" [label="haptic feedback"];
    what -> "skills/now-playing.md" [label="Now Playing\n/ remote commands"];
    what -> "skills/system-media-routing.md" [label="cast to non-AirPlay\n(Chromecast/DLNA, iOS27)"];
    what -> "skills/screen-capture.md" [label="screen capture /\nrecording (OS27)"];
    what -> "skills/carplay-hig.md" [label="CarPlay app design\n/ categories / entitlements"];
    what -> "skills/dockkit.md" [label="DockKit stands\n/ gimbals / tracking"];
}

Camera capture? → skills/camera-capture.md (patterns), skills/camera-capture-ref.md (API), skills/camera-capture-diag.md (debugging)
Photo pickers / library? → skills/photo-library.md, skills/photo-library-ref.md
Audio / AVFoundation (audio)? → skills/avfoundation-ref.md; video write/export/playback, sample-buffer engine, resumable export, iOS 27 deprecations? → skills/avfoundation-video-ref.md (OS27)
ShazamKit / audio recognition? → skills/shazamkit.md, skills/shazamkit-ref.md
On-device music analysis (key, tempo, structure, pace, instruments, loudness)? → skills/music-understanding.md (OS27)
On-device face grouping (cluster faces into people across a library) or video highlights / key-frame detection? → skills/media-intelligence.md (OS27)
Haptics? → skills/haptics.md
Now Playing / remote commands? → skills/now-playing.md, skills/now-playing-carplay.md, skills/now-playing-musickit.md
Cast / route media to non-AirPlay devices (Google Cast/Chromecast, DLNA) as system routes? → skills/system-media-routing.md (iOS27, EU-gated/beta)
Screen capture / recording / streaming the screen or your own app (ScreenCaptureKit)? → skills/screen-capture.md (OS27 — new on iOS/iPadOS/tvOS/visionOS 27)
CarPlay app design, category selection, entitlement request? → skills/carplay-hig.md (start here for any CarPlay work)
DockKit motorized stands / gimbals, subject tracking, custom motor control? → skills/dockkit.md
Want camera code audit? → Delegate to the camera-auditor subagent (detects deprecated APIs and architectural gaps: missing interruption handlers, runtime-error recovery, audio session deactivation, permission-denied UX, RotationCoordinator on iOS 17+; scores RELIABLE / FRAGILE / BROKEN)

Cross-Domain Routing

Camera + permissions (camera access denied, Info.plist missing):

Camera code → stay here (camera-capture)
Privacy manifest / Info.plist → invoke axiom-integration (privacy-ux reference)
Build/entitlement errors → invoke axiom-build

ShazamKit + microphone permissions:

Microphone NSMicrophoneUsageDescription → invoke axiom-integration (privacy-ux reference)
ShazamKit API and matching → stay here (shazamkit)

Now Playing + background audio:

Now Playing metadata/controls → stay here (now-playing)
Background audio mode / BGTaskScheduler → invoke axiom-integration (background-processing reference)

Speech-to-text + audio capture (transcribing mic or asset audio):

SpeechAnalyzer / SpeechTranscriber, the ~2-simultaneous-analyzer cap, the OS27 input providers → invoke axiom-ai (skills/ios-ml.md)
Audio session category/mode, AVCaptureSession wiring → stay here (avfoundation-ref, camera-capture)
The trap: CaptureInputSequenceProvider.providerWithSession(...) (OS27) automatically reconfigures your app's default AVAudioSession. If this suite's audio-session setup "randomly breaks" after transcription is added, that's the cause — use provider(from:in:) and add its captureAudioDataOutput to your own session.

Photo library + privacy:

Photo picker (PHPicker, PhotosPicker) → stay here (photo-library) — no permissions needed
Full PHPhotoLibrary access → stay here (photo-library-ref) — limited access model
Privacy manifest for photo usage → invoke axiom-integration (privacy-ux reference)

DockKit + camera / custom inference:

DockKit stand control, framing, motor, tracking states → stay here (dockkit)
Underlying AVCaptureSession setup → stay here (camera-capture)
Custom Vision / Core ML inference feeding observations → invoke axiom-vision
Camera permission (NSCameraUsageDescription) → invoke axiom-integration (privacy-ux reference)

MediaIntelligence + Vision (faces, image analysis):

Group faces into people across a library, video highlights / key frames → stay here (media-intelligence) — clustering identities + on-device video moment detection
Detect where a face is in one image (bounding box, landmarks), OCR, segmentation → invoke axiom-vision — per-image detection, a different problem
System Photos "People" album → that album is system-owned (PhotoKit); MediaIntelligence builds your own index over assets you manage → stay here (photo-library for the asset access)

Anti-Rationalization

Thought	Reality
"Camera capture is just AVCaptureSession setup"	Camera has interruption handlers, rotation, and threading requirements.
"Camera launch is fast enough if I startRunning() early"	Output initialization dominates launch; iOS 26 deferred start halves time-to-preview.
"I'll add haptics with a simple API call"	Haptic design has patterns for each interaction type matching HIG.
"ShazamKit is just SHSession + a delegate"	iOS 17+ has SHManagedSession which eliminates all AVAudioEngine boilerplate.
"Now Playing info is just setting metadata"	Remote commands, artwork handling, and state sync have 15+ gotchas.
"I'll use UIImagePickerController for photos"	PHPicker/PhotosPicker are the modern API — no permissions required.
"DockKit is just pairing a stand"	Custom control needs system tracking disabled, handles inverted dock states, and two different coordinate origins.
"Grouping faces is just Vision face detection"	Vision detects faces in one image; MediaIntelligence clusters them into persistent people (entities) across a whole library, with its own working directory and state.
"Casting to Chromecast means bundling the Google Cast SDK"	On iOS 27, AVSystemRouting exposes non-AirPlay routes as system routes — you adopt one Apple API (observe events, start a session, drive playbackControl) instead of a per-vendor SDK. Likely EU-gated/beta — gate and keep a fallback.
"I'll sync SharePlay playback by broadcasting the current time over the messenger"	The messenger has no clock. `AVDelegatingPlaybackCoordinatorPlayCommand.hostClockTime` gives you an absolute `CMClockGetHostTimeClock()` start time; hand-rolling reinvents startup barriers, seek ordering, stalls, and interruptions badly.
"The playback coordinator handles interruptions for me"	Only `AVPlayerPlaybackCoordinator` does. `AVDelegatingPlaybackCoordinator` adds no automatic suspensions — a custom engine begins and ends every one, and a suspension never ended hangs the whole group.
"ScreenCaptureKit on iPad works like the Mac (enumerate displays/windows)"	On iOS/iPadOS `SCShareableContent` and all `SCContentFilter` initializers are macOS-only — you get a filter ONLY from the system `SCContentSharingPicker`. New on iOS/iPadOS/tvOS/visionOS 27. Also not `ImageRenderer` (that snapshots your own SwiftUI view).

Example Invocations

User: "How do I set up a camera preview?" → Read: skills/camera-capture.md

User: "My camera app takes a second before preview appears" → Read: skills/camera-capture.md (Pattern 8, deferred start)

User: "Support the Center Stage front camera" / "Capture 48MP photos" → Read: skills/camera-capture-ref.md

User: "Camera freezes when I get a phone call" → Read: skills/camera-capture-diag.md

User: "How do I let users pick photos in SwiftUI?" → Read: skills/photo-library.md

User: "Implement haptic feedback for button taps" → Read: skills/haptics.md

User: "Now Playing info doesn't appear on Lock Screen" → Read: skills/now-playing.md

User: "How do I identify songs with ShazamKit?" → Read: skills/shazamkit.md

User: "How do I detect a song's tempo / key / beat grid on-device?" / "Analyze audio loudness or structure" → Read: skills/music-understanding.md

User: "Group faces into people across my photo library" / "cluster faces on-device" / "find highlights or a thumbnail frame in a video" → Read: skills/media-intelligence.md

User: "Cast to Chromecast / Google Cast without the Cast SDK" / "support non-AirPlay casting" / "route media to a DLNA device as a system route" → Read: skills/system-media-routing.md

User: "Record / stream the iPad screen" / "ScreenCaptureKit on iOS" / "screen recording in my app" / "capture just my app's content" → Read: skills/screen-capture.md

User: "Track a subject with a motorized stand" / "Control a DockKit gimbal" → Read: skills/dockkit.md

User: "Check my camera code for issues" → Launch: camera-auditor agent

Fluxly profile Author and license come from source; runtime, permissions, and network are Fluxly detections or estimates

Fluxly category: Other
Author-declared agents: No explicit declaration found; this is not inferred or tested compatibility
Static check: 88 / 100 · heuristic scan, not runtime safety proof
Author / version / license: @CharlesWiltgen · no license declared
Fluxly token estimate: Moderate
Fluxly setup estimate: Guided setup
External API key: No requirement detected
Detected OS requirements: macOS · Windows
Runtime requirements: Unspecified
Detected file/system behavior: Read-only
Write / modify
Detected network behavior: External requests
Install commands: None (reference only)

Profile is derived at build time from SKILL.md and install vectors. Subject to drift from author intent.

Heads up: 未限定 allowed-tools，默认拥有全部工具权限。

Output preview axiom-media-0cbca41c2a.preview

The current SKILL.md does not define a fixed output example.

SKILL.md SKILL.md

# Media

**You MUST use this skill for ANY camera, photo, audio, haptic, or media playback work.**

## Cursor Subagent Routing

Delegate to the appropriate Cursor subagent when this router calls for a specialized auditor.

## Quick Reference

| Symptom / Task | Reference |
|----------------|-----------|
| Camera capture, AVCaptureSession | See `skills/camera-capture.md` |
| Slow camera launch / deferred start (iOS 26+), ProRes recording via Pro Video Storage (`OS27`) | See `skills/camera-capture.md` Patterns 8-9 |
| Camera API (RotationCoordinator, etc.) | See `skills/camera-capture-ref.md` |
| Center Stage front camera (iPhone 17), dynamic aspect ratio, smart framing, 24/48 MP capture | See `skills/camera-capture-ref.md` |
| Camera freezes, black preview, rotation | See `skills/camera-capture-diag.md` |
| Photo pickers, library access | See `skills/photo-library.md` |
| PHPicker, PhotosPicker API reference | See `skills/photo-library-ref.md` |
| PhotoKit + Swift 6 strict concurrency, `nonisolated` observer, `performChanges` isolation, `_dispatch_assert_queue_fail` | See axiom-concurrency (skills/isolation-inheritance-diag.md) |
| Audio, AVFoundation, spatial audio | See `skills/avfoundation-ref.md` |
| Video write/export/playback, sample-buffer engine, resumable export, Apple Log 2, iOS 27 deprecations (`OS27`) | See `skills/avfoundation-video-ref.md` |
| Audio recognition, ShazamKit | See `skills/shazamkit.md` |
| ShazamKit API reference | See `skills/shazamkit-ref.md` |
| On-device music analysis (key, tempo, structure, loudness), MusicUnderstanding (`OS27`) | See `skills/music-understanding.md` |
| On-device face grouping (cluster faces into people across a library), video highlights/key frames, MediaIntelligence (`OS27`) | See `skills/media-intelligence.md` |

…

Evidence boundary and execution chain

Author text anchors workflow facts; Fluxly only indexes current sections, terms, files, and commands.

sections -> Cursor Subagent Routing → Quick Reference → Decision Tree → Cross-Domain Routing → Anti-Rationalization → Example Invocations
terms    -> Invoke axiom-ai · Camera + permissions · stay here · invoke axiom-integration · invoke axiom-build · ShazamKit + microphone permissions · Now Playing + background audio · Speech-to-text + audio capture
files/cmd -> skills/camera-capture.md · OS27 · skills/camera-capture-ref.md · skills/camera-capture-diag.md · skills/photo-library.md · skills/photo-library-ref.md · nonisolated · performChanges
body sha256 -> 640f1b31d6ff