Debug Inspector

Trace every SDK event, inspect timeline state, resolve assets, and verify adapter health.

SDK event stream

Click any event to inspect its payload.

Current timeline state

{
  "contractVersion": "2026-05-21",
  "timelineId": "tl_coffee_ad_001",
  "duration": 5,
  "tracks": 3,
  "clips": 3,
  "playhead": 2.3,
  "selected": "video-1"
}

Asset resolver

assetId	type	source URL	track	status
asset_video_001	video	/mock/coffee-ad-shot.mp4	video	Resolved
voice_001	audio	tts://narrator?v=Warm_Male	voice	Resolved
subtitle_001	subtitle	inline://text	subtitle	Resolved
brand_logo_001	image	/mock/beancraft-logo.png	overlay	Cached

Adapter status

Flutter bridge

Connected

postMessage

Listening

REST API

Healthy

Render worker

Available

Contract validation

Scene Graph

Valid

Timeline

Valid

Bridge Command

Valid

SDK Event

Valid

AI Request

Valid

AI Response

Valid

Export Job

Valid

Error Payload

Valid

Error diagnostics

Subtitle clip exceeds voice duration by 0.3s

subtitle_001 ends at 4.6s · voice_001 ends at 4.3s

Error payload contractjson

{
  "contractVersion": "2026-05-21",
  "code": "TIMELINE_SUBTITLE_OVERRUN",
  "message": "Subtitle timing overrun detected.",
  "severity": "warning",
  "retryable": true,
  "details": {
    "clipId": "subtitle-1",
    "voiceClipId": "voice-1",
    "delta": "0.3s"
  }
}

Performance metrics

Preview FPS

59.4

Timeline render

11ms

Asset load

320ms

Export queue wait

0.8s

Memory usage

142 MB

Bridge latency

4ms