# Phase A1 window

- Clip: `強化上片-20260617-0800-1200.mp4`
- Mapping: video `t=0` ↔ wall `08:00`
- **Selected window**: wall **09:30–10:30** (60 min)
- `video_t_start`: **5400**
- `video_t_end`: **9000**
- Selection: max CSV priority score (上片/下片 weighted) among 60-min windows in 08:00–12:00