Continue Any Video Where It Ends
Upload a clip, choose where it continues, and describe what happens next. AI adds new seconds that match your footage — chain them to build a longer scene.
Drag & drop or choose an MP4 or MOV file (up to 50MB)
One Tool to Grow Any Video Longer
Continue a clip from the exact frame you pick, match the original motion and style, and chain extension after extension to tell a longer story — all in one place.
Pick Up Right Where Your Clip Ends.
Upload a video and AI continues it from the moment you choose, carrying the motion, lighting, camera angle, and characters already on screen into the new footage. The added seconds blend into the original shot instead of looking like a separate clip stitched on the end.
Extend a video
Point the AI at the Exact Moment.
Drag the timeline handles to select the 2–15 second segment the extension should grow from, then choose how many seconds of new footage to add. Aiming the model at the right frame means cleaner continuations and far fewer wasted generations.
Trim a clip
Chain Extensions Into a Full Scene.
Every result becomes the starting point for the next extension, so a few-second upload can grow into a complete sequence. Keep building clip after clip — no re-uploading, no starting over, and no hard cap on your finished length.
Start a chain
FAQ
Frequently asked questions
What is the AI Video Extender?
It continues a video you already have instead of generating a brand-new one. Upload a clip, choose the section to continue from, describe what happens next, and AI adds new footage that picks up right from that point.
What videos can I upload?
Drop in an MP4 or MOV file up to 50MB, or paste a direct video URL. Your clip should be at least 2 seconds long, and you can select up to 15 seconds as the part the extension continues from.
How much footage can I add at once?
Each run generates 4 to 15 seconds of new video. Because you can extend the result again, the total length of your finished clip is not capped by a single generation.
Will the new footage match my original clip?
Your selected section is handed to the model as a reference, so the extension follows the same motion, camera direction, lighting, and subjects. A short, specific prompt about what happens next keeps the results consistent.
Which model powers the extension?
Extensions run on Seedance 2.0 Mini using reference-video extension, billed at 2.4 credits per second across the combined length of your selected section and the new footage.
How the AI Video Extender Works
1. Upload your video
Drag & drop, browse for a file, or paste a link — MP4 or MOV up to 50MB.
2. Pick the starting point
Drag the handles to choose the 2–15s section the extension should grow from.
3. Say what comes next
Write a short prompt and set how many new seconds of footage to generate.
4. Extend, then extend again
Each result becomes the next starting point, so you can grow the clip as long as you like.