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How to create a 12-second vertical video for Reels and TikTok with Cinetic

Render a 1080x1920 product clip that follows your brand colours and typeface.

  • Content
  • Intermediate
  • 1 hour 30 minutes
  • From the README
  • Claude Code
  • Codex
  • Cursor

Who it is forA small app team posting short product updates on Instagram Reels and TikTok.

The problemShort vertical product clips take time to cut, and generic motion graphics do not match the brand.

The outcomeA 1080x1920 MP4 with sound that shows a product feature in your own colours and typeface.

What you need first

  • Node 22+
  • ffmpeg 6+ with libx264 and ffprobe
  • Python 3.11+ with the listed Python packages
  • A headless Chromium
  • A coding agent such as Claude Code, Codex or Cursor

Steps

  1. Run npx skills add Leonxlnx/cinetic to install the skill.
  2. Write the brief with your brand values: ink, paper, accent colours and the typeface.
  3. Ask your agent for a 12-second vertical video at 1080x1920 for Reels and TikTok, with sound.
  4. Let the agent run python3 scripts/pick.py --format vertical --energy high --seconds 12 --json out/qa/picks.json to draw about five techniques. (inferred, check the README)
  5. Check the MP4 on a phone-sized preview before posting.

Prompt for your agent

Use the cinetic skill from the Leonxlnx/cinetic repo to make a 12-second 1080x1920 vertical video with sound for <app name>, using the brand colours <hex values> and typeface <font name>. Output an MP4 and confirm the brand colours and typeface were used exactly as supplied.

Caveat. The README says a brand you supply always wins, so the colours and typeface in your brief must be exact or the agent will apply its own look.

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