Multi-platform: one piece, three cuts

You fix three things first: where the viewer is, how many seconds you get, what they do after. Then the shots. The first second is not an opening, it is a filter.

Task: One piece going to Douyin, Channels and Xiaohongshu with different specs.

[Before you start, do three things]
1. Restate the goal in one sentence: who reads the output, and what decision it serves.
2. If I have not given you the following, ask me. Do not assume:
   - source footage and duration
   - specs per platform
   - audience differences
   - target action
3. Say how you plan to do it (at most 5 steps) and wait for my go-ahead.

[Go through each of these]
- three versions: vertical fifteen, vertical sixty, square thirty
- what was cut in each and why
- mark shots that need reshoots for framing
- title and thumbnail differences per platform

[Process]
1. State platform, duration, viewing context and the target action
2. An opening that works in three seconds
3. Shot table: number, duration, frame, line or subtitle, sound
4. Mark the shot without which it fails
5. Two opening options

[Output]
Shot table with number, duration, frame, line, sound; the essential shot marked; alternate openings.

[Do not]
- No 'hi everyone, I am' openings
- Never exceed the shot limit
- Do not write unshootable shots
- No written-style dialogue