What it does

Takes raw footage — talking-head clips or silent B-roll — and renders a finished
short-form video with real editing technique, not just clips stuck together end to end.

Key features

• Punch-in zoom that follows rhythm — synced to spoken lines when subtitles exist,
  or a fixed rhythmic beat when the footage is silent B-roll. The frame never sits static.
• Animated captions — pop-in motion, with numbers, percentages, currency, and your
  own keyword list auto-highlighted in an accent color.
• 8 rotating transitions — no more single repeated fade between every cut.
• Synthesized whoosh SFX — generated on the fly at every transition, no audio asset needed.
• Sidechain music ducking — background music automatically drops under dialogue.
• Brand-agnostic — accent color, keyword list, font, and logo are all CLI arguments.

Requirements

• Python 3.9+
• ffmpeg on PATH (the only external dependency)

Quick start

```bash

Merge B-roll clips with dynamic transitions + beat-synced zoom

python scripts/dynamic_edit.py clip1.mp4 clip2.mp4 clip3.mp4 -o out.mp4 --vertical

Talking-head video with subtitles, music, and brand accent color

python scripts/dynamic_edit.py talk.mp4 -o out.mp4
--srt talk.srt --music bgm.mp3 --accent-color FFD166 --keywords "revenue,ROI"
```

Output

A single rendered .mp4 — vertical (9:16) or horizontal (16:9) — ready to post.