Dual-camera video insight scaffold

Two angles of the same intersection. Sync them, detect/track people & cars, and ask free-text questions about what's in view.

1. Sync the two timelines

Offset (video B seconds relative to A):

Not yet auto-synced. Auto-detect gives a starting point from ambient audio — always verify visually and fine-tune above.

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3. Link the same object across both cameras

Needs both videos processed offline with tracking on (Demo → Tracked) first. Matches tracks by appearance across the sync offset -- a heuristic, not ground truth. Linked objects get a shared "G#" id and color in both views.

4. Ask about what's in view

Ask about:

Uses the frame + detections at the moment you ask (pause/scrub to point at a specific instant — imitates "now" on a live feed).