Using Codex Subagents to Render Video Scenes in Parallel

Melvin Vivas · X post · 2026-09-16 · Open on X

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

Summary

A short tip: you can use OpenAI Codex to create videos, and it can split the work into scenes that subagents build in parallel.

Key points

• Codex can be used for video-creation workflows, not just code.
• Subagents let Codex work on several scenes in parallel.
• Parallel subagents speed up multi-part creative tasks.

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

Try this

• Try splitting a multi-scene video task across Codex subagents.
• Build a video generator in Codex that assigns each scene to its own subagent.