📹 How do I edit a video with Modify Video?

Modify Video makes AI-powered edits to an existing clip from a text prompt, changing objects, backgrounds, colors, or style without reshooting. You reference your uploaded clip in the prompt using a tag like @Video1.

Edit any existing video using a text prompt - change objects, backgrounds, colors, or style without reshooting.
All video tools share the same layout: upload panel on the left, History and How it Works tabs on the right. Select from Library is available on all tools to reuse existing assets.

Edit a Video

Follow these steps to get started:

• Go to Video → Modify Video.
• Upload your video, drag & drop, paste a URL, or Select from Library (max 200 MB, 10 seconds).
• Note the reference tag shown, e.g. @Video1.
• Describe your change using the tag, e.g. "Change the cherry blossom to a maple tree in @Video1."
• Click Generate Video, then preview and download from the right panel.

Tips for better results

• Always include the @Video1 tag in your prompt, without it, the edit won't apply.
• Be specific: "Replace the red car with a blue truck" works better than "change the car."

🚨 If changes aren't applying, confirm the @Video1 tag is in your prompt. If upload fails, check the file is under 200 MB and 10 seconds.

Still Need Help? Reach out to us at support@atlabs.ai — we’re happy to assist with the changes.

Updated on: 07/29/2026