What you need
- Access to ChatGPT Codex (Pro or Enterprise subscription)
- Remotion plugin available in the Codex plugin store
- A video file (MP4 or MOV recommended)
- A web browser and stable internet connection
- Basic familiarity with ChatGPT’s plugin interface
Follow these three steps to transform your raw footage into a polished, viral-ready video entirely with code. No timeline dragging required.
1. Download and Install Codex
First, make sure you have access to the ChatGPT Codex environment. If you haven’t installed it yet, here’s how:
Download Codex at chatgpt.com/codex
- Open your browser and go to the Codex download page.
- Sign in with your ChatGPT Pro or Enterprise account.
- Follow the on-screen instructions to install the Codex workspace.
Once installed, launch Codex. You’ll see a clean interface with options for code and plugin access. We’ll use this for everything.
2. Activate the Remotion Plugin
Remotion is now a native plugin in Codex, so setup is effortless. Adding it takes just seconds:
In Plugins, search for Remotion and click Add—no extra downloads or configuration.
- In the Codex sidebar, click the Plugins tab.
- Type Remotion into the search bar.
- Click Add next to the Remotion plugin entry.
Once added, you’ll see Remotion in your active plugin list. There’s no separate app to download or install. Everything runs inside the Codex editor.
3. Edit Your Video with Plain-English Prompts
Now comes the fun part. Instead of dragging clips on a timeline, you’ll tell Codex exactly how to edit your video using plain English. Let’s walk through the process:
- Click Upload in the Codex Remotion panel and select your video file.
Upload your video and enter:
- In the prompt area, type your editing instructions. For example:
@Remotion edit this video with cuts, zooms, and onscreen text to make it as viral as possible.
Codex will analyze the footage and generate all the code needed to perform those edits. Under the hood, it is creating Remotion scripts that define where to cut, which zoom levels to apply, where to place text, and which transition effects to use.
Reviewing and Tweaking Your Edit
After a few seconds, you’ll see a preview of your edited video right in the Remotion panel. If you want to refine any part of the edit, just add another plain-English instruction. For example:
- Adjust a cut point:
@Remotion move the cut at 00:00:10 to 00:00:12 for smoother flow.
- Change onscreen text style:
@Remotion make the headline text bold, white color with black shadow.
- Add a transition:
@Remotion apply a 1-second crossfade between clips 3 and 4.
Each time you submit a tweak, Codex regenerates only the parts of the code that need updating. No full re-export is required until you’re happy with the entire video.
Exporting Your Final Video
Once your edits look perfect in the preview, export the video with one simple command:
@Remotion export final.mp4 at 1080p
Codex will spin up the Remotion renderer and produce a high-quality MP4 file ready for sharing.
Common mistakes
- Not updating to the latest Codex version before adding the Remotion plugin
- Including tracking or affiliate links instead of using the official tool name
- Forgetting to specify exact timestamps when asking for cuts or zooms
- Running multiple edit commands without reviewing intermediate previews
- Overwriting your original video file without keeping a backup
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