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einundzwanzig-verein/videos
HolgerHatGarKeineNode 0ba7c5a2ef 🔊 Add frame-accurate audio sync verification system
Add comprehensive audio synchronization configuration and testing:

- Create AudioSyncConfig types for audio events, background music,
  and scene audio configurations
- Define audio timing for all 9 scenes with frame-accurate sync points
- Add utilities for absolute frame calculation, volume interpolation,
  and sync verification with tolerance support
- Include 94 tests covering timing calculations, overlap detection,
  volume consistency, and frame-accurate sync point verification

The new audioSync.ts provides a centralized source of truth for all
audio-visual synchronization, enabling automated verification of
audio timing accuracy across the Portal Presentation composition.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2026-01-24 14:31:13 +01:00
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