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How to make a narrated explainer video, approving each stage with Mortiflix OSS

Build a 30 s to 2 min explainer with Claude, reviewing the brief, script, frames and final before each next stage runs.

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

Credentials. Real runs need a Claude Code login or an Anthropic API key, which are stored in the studio folder in secrets.json and session.env.

Who it is forA solo creator or marketer who needs a short explainer video and wants to check every stage before it moves on.

The problemOne-prompt AI video tools give a single result you cannot steer, so revisions are guesswork.

The outcomeA delivered explainer video where you pinned notes on frames and moments and approved each stage along the way.

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. Run git clone https://github.com/GTKottman/mortiflix-oss.git && cd mortiflix-oss, then npm install and npm link.
  2. Run mortiflix init to create the studio folder and pick a backend, then mortiflix setup for the walkthrough.
  3. Run mortiflix demo for a free walk-through with placeholder work before paying for real Claude work.
  4. Run mortiflix new explainer and answer the brief's questions.
  5. Run mortiflix run and wait until the session stops at a gate.
  6. Run mortiflix review to read the submission, answer questions, pin notes, then approve or ask for changes. Repeat mortiflix run until the video is delivered.

Prompt for your agent

Using the repo GTKottman/mortiflix-oss, set up the studio with `npm install` and `npm link`, then run `mortiflix new explainer` for the brief <your video topic>. Run `mortiflix run` and report the gate the session stops at. Verify that the output names a stage such as script or style frames and waits for your approval.

Caveat. Real videos need a paid Claude Code plan or Anthropic API usage, so start with `mortiflix demo` to test the flow for free.

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