Stretch a too-short clip
The shot came out shorter than you needed — add to the tail instead of regenerating the whole thing.
AI Video Extender
Clip too short? Let AI continue from its final frames — motion and scene stay continuous, and you don't regenerate the whole shot.
Key features
Continues from the final frames
The model reads your clip's ending and motion trend and generates forward — not a fresh take, so everything before stays byte-for-byte the same.
Motion and scene stay continuous
Character, set, and lighting carry over from the source, so the join doesn't suddenly look like somewhere else.
Steer what happens next
Add a sentence to direct where it goes, or leave it empty and let the existing motion carry on naturally.
Extend the extension
Not long enough? Feed the result back in and extend again, building out to the length you need.
Use cases
Let an action finish
The motion got cut off at the end — continue it so it resolves naturally.
Fill the timeline
The edit needs a longer shot in this slot; extend the footage you have to that length.
Direct the continuation
Use one sentence to send the next stretch where you want it rather than wherever it drifts.
How to use
01
Open the AI Video Extender and upload the clip you want to lengthen.
02
Optionally add a sentence describing what should happen next.
03
Download the result, or send it to the canvas to keep cutting.
Deep dive
Don't remake it — just make it longer
A common moment in video generation: you get a clip you're happy with, and it's two seconds shorter than you need.
The reflex is to regenerate at a longer duration. But that produces a completely different piece — the part you liked is gone too, and you're back to picking takes.
Extending exists for exactly this: treat the existing clip as the start and continue from its final frames. Everything before is untouched; there's simply more after.
Steadier endings extend better
The model continues from your clip's ending frames and motion trend, so the state of the tail directly decides join quality:
- Steady endings extend best — gentle motion and a clear subject make the next move easy to infer
- Fast camera moves and violent action tend to show — the join can jump slightly
- You can direct the continuation, but not sharply — a turn far from the current picture makes the seam obvious
Need more length? Feed the result back and extend again. But each pass builds on the previous ending, so several passes in, the picture drifts from where it began. For genuinely long pieces, separate shots edited together stays more controllable.
When to reach for a different tool
- You want a brand-new shot — the video generator; this page needs existing footage.
- You need the ending frame to be exact — first-last-frame pins the landing point.
- You want to change content, not length — video-edit.
- You're assembling multiple shots — cut on the canvas rather than extending in one long chain.
A reasonable way to think about it
Extending is repair, not authoring — its value is preserving the part you already like.
So the test is simple: are you happy with the footage in hand? If yes, extend. If no, go back to the video generator and remake it. Using extension to rescue a clip that was wrong to begin with usually just produces a longer version of the problem.
Frequently asked questions
How is this different from regenerating a longer clip?+
Regenerating gives you a completely different piece — including losing the part you liked. Extending treats your existing footage as the starting point, so everything before it is untouched. If you already have footage you're happy with, extending is almost always the right call.
Is the join visible?+
The model generates from the ending frames, so scene and character usually carry over. Where it shows is high-amplitude motion — fast camera moves or violent action can jump slightly at the join. The steadier the final frames, the cleaner the extension.
Can I keep extending indefinitely?+
You can feed the result back in and go again. But each pass builds on the previous ending, so after several the picture may drift from where it started. For genuinely long pieces, generating a few separate shots and editing them together is usually more controllable.
Can I direct what happens next?+
Add a sentence. Left empty, it continues along the existing motion trend; with direction, it heads where you say — though not too sharply. A turn far from the current picture makes the join obvious.
