AI Video Extender: Continue Your Scene with AI

Upload an MP4 or MOV, describe the next action, and extend your video by 1 to 15 seconds. ChatArt uses the clip's final frames and your prompt to guide the subject, motion, camera direction, and visual style in the new footage.

Extend My Video

Continue Your Video with New AI-Generated Footage

Unlike looping or slow motion, AI video extension creates the next part of the scene from your clip's final frames.

Turn a Short Clip into a Complete Shot

  • Finish the ActionGive a product turn, character movement, or camera move more time to reach a clear ending.
  • Direct the Next MomentUse a prompt to guide the subject, action, camera, and environment in the added footage.
  • Guide the ContinuationUse the final frames and a focused prompt to guide motion, composition, and visual style in the added footage.

Video Extension Prompts for Social Posts, Ads, and B-roll

These concise continuation prompts turn an existing clip into an unexpected social moment, a product reveal, or cinematic B-roll.

Social post

Create a Surprising Twist

Prompt: Jump off the cliff and ride a wild goose.

Product ad

Build a Product Reveal

Prompt: The music freezes the environment, showcasing the headphones.

B-roll

Enter a New World

Prompt: The vehicle drives into a world of giant mushrooms.

Prepare Your Final Frame and Prompt

A readable final frame and a specific prompt give the model clearer context for the continuation.

Choose a Clear Final Frame

Trim the video where the subject, motion, and scene remain easy to read.

Keep the Subject in View

End the clip before the subject leaves the frame, becomes obscured, or blurs.

Describe What Happens Next

Specify the next action, camera movement, and desired ending.

Preserve the Existing Look

Reference the existing lighting, atmosphere, and visual style in your prompt.

How to Extend a Video with AI in 3 Steps

Upload a clip, describe its next moment, then generate and download the continuation.

Choose Video Extension in ChatArt

Step 1. Upload Your Clip

Sign in, open Video Extension, and upload one MP4 or MOV file no larger than 50 MB.

Set the continuation prompt, model, and duration

Step 2. Direct the Next Moment

Describe the next action, camera movement, and scene ending, then choose a model, extension length, and quality.

Review and download an extended video

Step 3. Generate and Download

Preview the result, revise the prompt if needed, and download your selected version as an MP4.

See More AI Video Workflows on YouTube

Explore long-form generation and model examples before planning your next AI video project.

Learn More About AI Video Creation

Compare video extension tools and models, or learn how to start a video from an image.

AI Video Extender FAQs

Answers about sign-in, trial credits, supported files, extension length, models, and output.

What is an AI video extender?

An AI video extender uses the final frames of an existing clip as context, then generates new footage from your continuation prompt. Unlike looping or slowing a clip, it creates the next part of the scene.

How do I extend a video with AI in ChatArt?

Sign in, upload one MP4 or MOV file, and describe the next action, camera movement, and scene ending. Choose a model, extension length, and quality, then generate and download the continuation.

Do I need to sign in, and are trial credits available?

You need to sign in before generating. New users receive trial credits, and each generation uses credits based on the selected model, duration, and quality. Video Extension does not include a separate free or unlimited allowance.

Which video files can I upload and download?

You can upload one MP4 or MOV file up to 50 MB. ChatArt exports the generated video as an MP4, with available quality from 360p to 4K depending on the selected model.

How much longer can ChatArt make a video?

You can add 1 to 15 seconds per generation. Available duration options depend on the selected model.

Which AI models support video extension?

Current options include Seedance 2.0, Seedance 2.0 Fast, Seedance 2.0 VIP, Seedance 2.0 Fast VIP, Kling 3.0, and PixVerse V6.

Will the extended video keep the original motion and visual style?

ChatArt uses the final frames of the source clip and your continuation prompt to carry the subject, motion, camera direction, and visual style into the new footage. Results vary with source quality, model choice, and prompt clarity.

What kinds of videos work best with an AI video extender?

Clips with a clear subject, visible motion, stable lighting, and an ending that naturally continues give the AI more useful context. Abrupt cuts, crowded scenes, or text-heavy frames can be harder to continue smoothly.

Can I extend an AI-generated video?

Yes. Upload an MP4 or MOV created with an AI video generator, then describe the next action or camera movement to continue the clip in ChatArt.

How is AI video extension different from looping or slow motion?

AI video extension generates new frames that continue the scene. Looping repeats existing footage, slow motion retimes the same frames, and frame interpolation only creates frames between existing moments.

Continue the Scene Beyond the Cut

Upload an MP4 or MOV, describe what happens next, and add 1 to 15 seconds of new footage.

Extend My Video