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How to make a vertical social short that works without sound with Mortiflix OSS

Create a 45 s to 3 min vertical short with hook frames reviewed first, using the social-short pipeline.

  • Content
  • Intermediate
  • 1 hour
  • From the README
  • Any agent

Who it is forA social media creator who posts vertical clips and needs them to hold attention with the sound off.

The problemShort vertical clips need a strong opening and readable visuals, and a one-shot generator gives no control over the hook.

The outcomeA vertical short whose hook frames you approved before the transitions and final were made.

What you need first

  • Node 20+
  • ffmpeg
  • Either a logged-in Claude Code install (your plan pays) or an Anthropic API key (you pay per token) for real videos
  • Optional: ElevenLabs API key for narration, sound effects and music
  • Linux is the most tested platform so far; Windows and macOS are not fully tested

Steps

  1. Set up the studio with mortiflix init and mortiflix setup, or run mortiflix demo first.
  2. Run mortiflix new social-short (inferred: pipeline name taken from the README table) and answer the brief's questions. (inferred, check the README)
  3. Run mortiflix run and review the hook frames with mortiflix review.
  4. Approve the hook, then keep running until the transitions and final are ready for review.
  5. Approve the final to make the video available to download.

Prompt for your agent

Using GTKottman/mortiflix-oss, create a social-short project for <your topic> with `mortiflix new social-short` (inferred command). Run `mortiflix run` and report the first gate. Verify that the first review is the hook frames and that the output is vertical.

Caveat. The README describes this pipeline as working with sound off, but the exact vertical output format is not given in the README, so check the render before publishing.

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