Video Extender
Extend short video clips with AI-generated footage. Upload your file, describe what happens next, and generate seamless additional seconds.
AI Video Extender: Lengthen Clips with Generative AI
Transform short clips into longer sequences using AI. Upload footage, describe what happens next, and generate seamless continuation frames that match your original video's style and motion.
How to Extend Videos
Upload your video (MP4, WEBM, or MOV, max 20MB)
Describe what happens next in the prompt field
Configure extension duration, resolution, and audio settings
Generate and download your extended footage
Heads up on model choice: If your video is under 720p, looks a bit rough, or isn't in a standard 9:16 or 16:9 format, go with Seedance 1.5 Pro. VEO 3.1 is pickier about source quality—feed it footage that doesn't meet these specs, and it'll throw an error.
Key Features
Adjustable Duration
The "Extend By" slider specifies exact seconds of new footage. Generate precisely what you need for timing requirements, music cues, or platform minimums.
Resolution Control
Match output quality to project requirements. Balance visual fidelity against file size and processing speed with resolution presets like 720p.
AI Audio Generation
Toggle on to generate corresponding sound for new frames, eliminating awkward silence without separate audio work.
Text-Guided Generation
Direct the AI with specific descriptions of action, camera movement, or scene progression—producing intentional results rather than random continuation.
Use Cases
Social Media Content
Captured moments often end too soon. Rather than reshooting, describe how the scene should conclude and generate the missing seconds naturally.
Marketing Variations
Create multiple endings from identical opening footage for A/B testing—no reshoots or additional production required.
Stock Footage Extension
Stretch limited footage without obvious looping. Generate genuinely new frames that continue the original action seamlessly.
