Replaces 64-band FFT frequency spectrum with 200-bar amplitude envelope:
- RMS amplitude per time slice — shows actual track dynamics
- Quiet intros, loud drops, silence gaps all visible
- Per-track normalization — each track uses its full dynamic range
- Gentle compression (power 0.7) so quiet parts remain visible
- 3-point weighted smoothing preserves dynamics while looking polished
- Time-progressive HSL gradient: deep amber (20°) → bright orange (40°)
- Single centered bars with rounded caps — classic waveform look
- 160px height, 800px width, tight 1px gap for dense visualization
- Cleared cached waveforms so all clips regenerate with new algorithm
Backend:
- Install ffmpeg + numpy in Docker image
- New waveform.py: FFT-based SVG generator with 64 frequency bands
- GET /api/clips/{id}/waveform — generates on demand, caches to /data/waveforms/
- DELETE /api/clips/{id} now cascade-removes waveform SVG
- Warm amber-to-orange HSL gradient (25° to 35° hue)
- Mirrored bars: top full opacity, bottom 60% opacity
Frontend:
- DetailPanel shows waveform image beneath album art (80px height)
- Only shown for clips with status='ready'
Storage: /data/waveforms/ persisted via existing ./data volume mount
rin.kagamine