AI Video Extender

AI Video Extender adds newly generated footage before or after an existing video clip, using the original footage as visual context. It’s built for creators, marketers, and video teams who need to make a short clip longer without simply looping, freezing, or slowing down the existing footage. The workflow is useful for social videos, product shots, B-roll, cinematic scenes, and AI-generated clips that end before the sequence feels complete.

Key Features

Before or After Video Extension

Extend a clip from either direction.

You can choose whether the generated footage should continue after the final frame or create a lead-in before the first frame, giving you more flexibility when building a longer sequence.

Prompt-Based Direction

Describe what should happen in the generated section.

The tool uses your prompt to guide the action or visual beat you want to add, making it possible to control how the extension develops rather than relying on a generic continuation.

Source-Guided Generation

Use the existing video as visual context.

The original clip provides context for the generated footage, helping the extension maintain elements such as the scene, movement, and lighting so the new material fits more naturally with what is already there.

Multiple Video Formats

Upload common video files directly.

AI Video Extender supports:

• MP4
• MOV
• WebM

Files can be up to 100 MB.

Flexible Generation Length

Choose how much additional footage to create.

The available extension lengths are:

• 5 seconds
• 10 seconds

This keeps the workflow focused on short additions rather than generating an entirely new video.

Resolution and Aspect Ratio Options

Prepare extensions for different publishing formats.

You can generate footage at 768p or 2K and choose between:

• 16:9
• 9:16
• 1:1

This makes it suitable for both landscape content and vertical social formats.

Built for Seamless Video Extensions

AI Video Extender combines source-video context with prompt-based generation to add new footage that fits an existing sequence.

Key benefits include:

• Extend footage before an existing clip
• Extend footage after an existing clip
• Describe the desired continuation with a prompt
• Use the source video as visual context
• Preserve scene and lighting context
• Generate 5 or 10 seconds of additional footage
• Upload MP4, MOV, and WebM files
• Support videos up to 100 MB
• Generate at 768p or 2K
• Choose 16:9, 9:16, or 1:1 output
• Work directly in the browser
• Create extensions for short-form video

Built For

• Video Creators
• Content Creators
• Social Media Teams
• Marketers
• Product Teams
• Filmmakers
• Editors
• AI Video Creators
• Ecommerce Businesses

Common Use Cases

• Extending short social media clips
• Creating longer Reels and Shorts
• Adding more footage to product videos
• Extending cinematic scenes
• Creating additional B-roll
• Extending AI-generated video clips
• Adding a lead-in before an existing shot
• Continuing a scene after the final frame
• Creating vertical video extensions
• Building longer sequences from short clips

Why It Matters

Short clips often have useful footage that ends just before the sequence feels complete. Looping the video, slowing it down, or holding the final frame can make the result feel repetitive or artificial.

AI Video Extender takes the existing footage as context and generates new material around it instead. You can specify what should happen next, while the source clip provides visual information for the generated section to follow.

That makes it useful when you need a few additional seconds without rebuilding the entire video. The before-and-after options also give creators control over where the extra footage belongs in the final sequence.

Extend Existing Videos With AI-Generated Footage

Upload an existing clip, choose whether to extend it before or after the source footage, describe the desired visual continuation, and generate a short extension that uses the original video as context.

New accounts receive 15 free credits, and purchased credits do not expire.