Continue the final moment of an existing clip. Describe what should happen next, rather than repeating the entire scene. The duration controls the new segment, which is appended to the original. An optional last-frame image gives the continuation a destination. Keep movement and lighting close to the source for a more coherent join.
kling-4.0/video-extendKling 4.0 · 18+ · Video Extension
| Model | Workflow | Inputs | Last frame | Duration (s) | Resolution | Aspect ratio | Audio toggle |
|---|---|---|---|---|---|---|---|
| Kling 4.0 | Video extend | Source video, Last frame (optional) | Last frame: Yes | 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10 / 11 / 12 / 13 / 14 / 15 / 16 / 17 / 18 / 19 / 20 / 21 / 22 / 23 / 24 / 25 / 26 / 27 / 28 / 29 / 30 | 720p / 1080p | From the source media | Audio toggle: Yes |
Extension picks up from the final moment of your upload, so the prompt only needs the next beat: the character stands up, the camera pulls back, a door opens behind them. Re-describing the entire scene can push the model to restage it, which makes the join easier to spot.
An optional last-frame image gives the new segment a destination. It works best when it plausibly belongs to the same place and lighting as the end of your clip. If the gap between the two is large, choose a longer duration so the movement has time to get there.
The duration setting controls only the added segment, from 3 to 30 seconds, and the result is your original clip with that segment appended. There is no aspect ratio selector in this workflow: the continuation keeps the shape of your source video. Choose 720p or 1080p; picking the resolution closest to your source keeps the two parts visually consistent.
The quote is based on the length and resolution of the new segment, so a long continuation costs more than a short one. Sign in and upload the source to see the exact amount. It is reserved on submission and charged when the extended clip is saved; if the task is confirmed as failed or timed out, the Peppers return to your balance. Packs are one-time purchases, and nothing renews.
Pricing
Peppers are GenSpicy generation credits. Buy once and use them across supported models. The form shows the cost of each generation before you submit.
$24.90usd
2,000 Peppers
PER 1,000 PEPPERS
$12.45
The smallest one-time pack. Start with 2,000 Peppers.
Most popular
$49.90usd
8,000 Peppers
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$6.24
≈50% less4× Glow’s Peppers for $25 more.
Best value
$99.90usd
23,000 Peppers
PER 1,000 PEPPERS
$4.34
≈65% lessLowest price per Pepper.
Unit-cost savings compared with Glow, before bonus Peppers. One-time payment. No subscription. For adults 18+ only.
