Upload the video to extend
Upload a short clip that ends on a continuable scene. The model uses the last few frames to infer camera position, color grade, depth of field, and motion velocity for the continuation.
Video tools
AI Video Extender
Extend video length with AI using prompt guidance. Seamlessly continue clips through the verified edit endpoint to add seconds without reshooting.
Previewvideo
Video Extender
Extend videos with prompt guidance through the verified video edit endpoint.
Upload video
MP4, MOV, WebM up to 100MB
How it works
How to use Video Extender
Write a continuation prompt
Describe what should happen next — "the character walks toward the horizon as the sun sets" or "camera continues slow dolly right through the forest." An explicit prompt reduces scene drift from the original.
Generate and chain if needed
Submit the job. HappyHorse 1.0 or Seedance 2.0 generates 2–8 seconds of new footage matching the clip's style. Feed the output back through the extender iteratively to chain longer sequences.
Why use it
Why use AI Pin Maker video tools
Workflow-first setup
Each page maps one user job to the required video inputs and model family.
Model fit
Uses the currently verified video-edit endpoint in the live model list.
Runnable tools
Ready tools connect to the AI Pin Maker video generation workspace.
Connected routes
Related video tools help continue from effects into editing, music, and production workflows.
FAQ
Video tool FAQ
- How many extra seconds does the video extender add?
- Most routes add 2–8 seconds of new footage per run. You can feed the output back through the extender iteratively to chain longer sequences beyond the initial extension.
- Does the extended footage match the original clip's visual style?
- Yes. The model conditions on the last few frames of the uploaded clip — using them to infer camera position, color grade, depth of field, and motion velocity before generating the continuation — so the transition reads as seamless.
- Can I extend an AI-generated video or only real footage?
- Both work. The extender is agnostic to whether the source was recorded with a camera or AI-generated — it conditions on visual content only, not on metadata about origin.
- What if the extension introduces visual inconsistencies?
- Refine the prompt to anchor specific details: "same forest lighting, no new characters, camera continues dolly right." A more explicit continuation prompt reduces scene drift and keeps the extension consistent with the original composition.
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