The clip is right. It is just too short.
AI Video Extender
Extend continues a video from its last frame instead of regenerating it — up to 15 new seconds a pass, the subject, light and camera carried over, on six engines.
Generated clips, each from a written prompt:
An Extend pass is priced by the seconds it adds and the resolution, and the figure for your settings is shown on the Generate button before you commit. Plans renew monthly until cancelled and can be cancelled online at any time — see pricing details.
Why extending beats regenerating longer
Generative video engines sample: two runs of one prompt are two interpretations, not a repeat. So when a 10-second clip is exactly right and the edit needs 20, re-running the prompt at 20 seconds throws the good clip away and gambles on a new one. Extend keeps it. The model is handed the clip itself, reads its final frame as the start of the new segment, and renders what follows — same subject, same palette, same lens, because it is literally continuing the picture rather than reinterpreting the words.
It is also how a shot that has to run past an engine’s ceiling gets made. Thirty seconds is the longest single generation in the studio; a 30-second take extended by 15, twice, is a minute of one continuous shot.
What one pass does
Pick the source
Any clip in your creations, or an upload. Its last frame becomes the first frame of what you are about to add.
Say what happens next
Not what is on screen — the model can see that. The change: the camera keeps pushing in, the fog lifts, the figure turns to the window. One action per pass.
Set the seconds, optionally the ending
Choose how many seconds to add and, on Seedance, attach a target last frame if the segment must arrive at a specific composition.
Chain, then finish
Extend the result again if the shot needs more; then upscale if it is soft, and score it. Each pass is priced on its own before you run it.
Writing a continuation prompt
The instinct is to paste the original prompt back in. Resist it: the original describes the frame the model already has, and a prompt that restates it produces a segment where nothing develops. Write the next beat instead. If the original was “hundreds of paper lanterns rising over a midnight lake”, the extension is “the lanterns thin out and drift toward the far shore as the first light comes up behind the ridge”.
Keep the camera and light lines in the same vocabulary as the first prompt so the join is invisible, and let each pass carry one change. Two changes in one segment — the light shifting and the subject turning — is where continuations start to look like cuts.
Which engines have Extend
Every Seedance engine, WAN 2.7 and MiniMax H3 have a matching Extend variant. WAN 3.0 Prime does not: a clip made there is continued on Seedance 2.5, which holds its look well enough that the join reads as a single shot in most cases.
| Variant | Adds | Resolution | Sound | Use it for |
|---|---|---|---|---|
| Seedance 2.5 Extend | 4 – 15 new seconds | 480p – 4K | Native audio | Continuing a finished take |
| Seedance 2.5 Turbo Extend | 4 – 15 new seconds | 720p / 1080p | Native audio | Cheap passes while you find the ending |
| Seedance 2.0 Extend | 4 – 15 new seconds | 480p – 4K | Native audio | Big-screen output |
| Seedance 2.0 Mini Extend | 4 – 15 new seconds | 480p – 4K | Native audio | The cheapest Seedance pass |
| WAN 2.7 Extend | Total length 5 – 15 s | 720p / 1080p | Audio guide | Short loops made on WAN 2.7 |
| MiniMax H3 Extend | 5 / 10 / 15 s passes | 480p / 768p | Native audio | Clips made on MiniMax H3 |
Measured generation times and cost per second for each engine are on AI video models compared; the credit price of any pass is shown on the Generate button before you run it.
Extend, merge or regenerate?
Three different jobs. Extend when the shot should keep going — the same camera, the same subject, more seconds. Merge when the piece is a sequence of different shots that should sit end to end as one file, which is an edit rather than a generation. Regenerate when the clip is wrong rather than short: no amount of continuation fixes a first act you do not want.
Sources, rights and labelling
A source can be any video generated on WowMade or an upload of your own. Uploads are screened before generation and must be yours to use; anything showing a person needs that person’s consent. Every clip generated here carries a signed C2PA provenance mark identifying it as AI-generated, in line with Article 50 of the EU AI Act; the mark travels with the file and anyone can read it back on the verification page. The Content & Safety Policy sets out what may not be created here. Plans renew monthly until cancelled and can be cancelled online at any time; the full terms are on pricing details.
Frequently asked questions
What does an AI video extender do?
It continues a video you already have from its final frame, generating new seconds that follow on from the motion, light and framing of the original instead of starting a fresh clip. On WowMade the source can be any clip generated here or a video you upload; you describe what happens next in the prompt and the new segment is rendered onto the end.
How many seconds can one Extend pass add?
On the Seedance engines a pass appends between 4 and 15 new seconds, and passes can be chained, so a 10-second clip becomes 25 and then 40. WAN 2.7 works differently: you set the total length of the finished video, from 5 to 15 seconds, and it fills the gap. MiniMax H3 has its own Extend with 5, 10 or 15-second passes.
Which engines can extend a video?
Six: Seedance 2.5, Seedance 2.5 Turbo, Seedance 2.0, Seedance 2.0 Mini, WAN 2.7 and MiniMax H3. Extend with the engine that made the clip where you can — the look carries over most faithfully — but any of the six will continue any source. WAN 3.0 Prime does not currently offer an Extend variant.
Is extending cheaper than generating a longer clip?
Usually, and it is always more consistent. You pay for the seconds you add rather than for the whole clip again, and the first frame of the new segment is the last frame of the old one, so the subject, palette and camera do not drift the way a second generation from the same prompt would. The credit cost of your settings is shown on the Generate button before you run it.
What should the prompt say when extending?
What happens next, not what is already there. The model can see the source; it needs the change — the camera keeps pushing in, the figure turns to the window, the fog lifts. Keep the wording of the light and camera lines consistent with the original prompt so the continuation reads as one shot, and give it one action per pass.
Can I control where the extended clip ends?
Yes. The Seedance Extend variants accept an optional target last frame — an image the new segment should arrive at. Generate or upload the frame you want to end on, attach it, and the model interpolates from the clip's final frame to yours. That is how a continuation lands on a specific composition rather than wherever the motion happens to stop.
Can I extend a video that was not made on WowMade?
You can upload one. Uploads are screened before generation and must be yours to use; anything showing a person needs that person's consent. The result carries a C2PA provenance mark identifying the generated seconds as AI-generated, and the Content and Safety Policy sets out what may not be created here.
Where to go next
One credit balance across video, image, music and the editing tools.
AI Video Studio
Open a clip, choose Extend, describe what happens next.
OpenAI Video Generator
The full picture: all six engines, formats and costs.
OpenVideo Merger
Join separate shots end to end as one file.
OpenVideo Upscaler
Raise a finished clip to a crisp 1080p.
OpenAI Image Generator
Make the target last frame a pass should arrive at.
OpenAI Music Generator
Score the longer cut with a track made the same way.
OpenVerify AI content
Read the C2PA provenance mark on any file.
OpenLatest image to video guides
See every image to video guide →
How to make a faceless YouTube channel: a practical, policy-aware playbook
Step-by-step guide to launch and scale a faceless YouTube channel: anonymous setup, voice/avatar strategies, production workflows, and monetization checklist.
AI in advertising examples: real campaigns and hands-on workflows
Practical AI in advertising examples: how brands use generative creative and step-by-step workflows to turn a product photo into short ad clips with WowMade AI Video Generator.
Show, Don't Shoot: Turn One Product Photo into High-Performing Vertical Demo Videos
Convert a single product photo into a high-converting 9:16 product demo using WowMade AI Video Generator. Step-by-step workflows, copy formulas, and measurement tips.