Making Stop-Motion Videos with Codex, Astra and GPT Image 2.5

Melvin Vivas · X video post · 2026-09-16 · 0:31 · 3,084 views · Open on X

Topics: AI Dev Tools & Productivity, AI Agents, Tool Use & MCP · Level: beginner

Summary

Melvin Vivas shows a short demo of a stop-motion video he made with an AI coding agent. He used Codex with "Astra" to generate scenes with GPT Image 2.5, then had them stitched into a stop-motion video, and says he did no manual edits. The 31-second clip has no narration, so it shows the idea but doesn't explain how to do it step by step.

Key points

• The workflow: inside Codex, use Astra to generate a series of scenes with the GPT Image 2.5 image model.
• The agent then stitches the generated frames into a stop-motion video.
• The creator says the result needed no manual edits. The agent handled both generating the images and putting the video together.
• This shows a coding agent working as a media-pipeline orchestrator, not just writing code.
• The post doesn't explain what Astra is or give any prompts or settings. Look these up yourself before trying to repeat it.

Resources mentioned

• OpenAI Codex · tool · openai.com · paid
  OpenAI's coding agent. In the diagram it writes code, fixes review findings and drives the build loop. The creator also used it to make this video.
  Also in: An agent bot that installs and drives Codex on its own (Melvin Vivas on X · notes), Asking a Coder bot to install Codex (Melvin Vivas on X · notes), Sign in with ChatGPT: Setting Usage Limits for Each App (Melvin Vivas on X · notes), Codex Cloud Environments Must Be Saved & Published Before Use (Melvin Vivas on X · notes) and 240 more
• GPT-6 Astra · tool · openai.com · paid
  The model announced in the quoted launch post, pitched as the developer's most capable model for work, coding, science and cybersecurity, and able to operate a computer.
  Also in: Customizing Your Coding Setup with Pi Coding Agent Extensions (Melvin Vivas on X · notes), Pi Agent Council: Ask Multiple LLMs in Parallel and Compare Their Advice (Melvin Vivas on X · notes), Use GPT-6.1 Sol by Default, Save Astra for Emergencies (Melvin Vivas on X · notes), Dots in ChatGPT: always-on AI agents that you hand responsibilities to (Melvin Vivas on X · notes) and 49 more
• GPT Image 2.5 · tool · openai.com · free
  An OpenAI image generation model, used here to make the stop-motion frames of the spaghetti scene.
  Also in: Making Stop-Motion Videos with Codex, Astra and GPT Image 2.5 (Melvin Vivas on X · notes), Will Smith Spaghetti Benchmark: Stop Motion with GPT Image 2.5 and Astra (Melvin Vivas on X · notes)

Try this

• Use Astra in Codex to generate scenes with GPT Image 2.5.
• Ask the agent to stitch the generated scenes into a stop-motion video.
• Make an AI-generated stop-motion video: have a coding agent generate the frames with an image model and stitch them into a video with no manual edits.