How it works
- Choose Kling 4.0 in «Edit» mode.
- Upload your own clip from 3 to 30 seconds.
- Describe what to change and what to keep.
- Get a clip of the same length, with the original sound.
About 6 minutes of waiting. More about the model: Kling 4.0 review.
«Edit» mode is also available for other models on KADR (kadr-ai.ru): Kling O3 (a clip from 3 to 15 seconds, you can add up to 4 reference photos), Seedance 2.5 (from 4 to 30 seconds, up to 6 reference photos) and Gemini Omni Flash (MP4 from 3 to 10 seconds). Below we talk about Kling 4.0.
What works well
| Edit | Example |
|---|---|
| Weather | sunshine to snowfall, dry to rain |
| Time of day | day to sunset, evening to night with lights |
| Background and setting | office to a seaside terrace, a room to a studio |
| Clothing | jacket colour, suit style |
| Picture style | real video to a cartoon or watercolour |
| Details | add string lights, snow on the trees, flowers |
Harder: small text on signs, an exact number of objects, faces in close-up.
Prompts
The main rule: say what to keep unchanged.
Weather:
Change the weather to heavy snowfall, add snow on the ground, roofs and trees. Keep the people, their movements and the camera exactly the same.
Time of day:
Change the time of day to evening blue hour, turn on warm lights in the windows and street lamps. Keep the people, movements and camera unchanged.
Background:
Replace the office background with a sunny terrace by the sea. Keep the person, their clothing, movements and the camera exactly the same. Match the lighting to the new background.
Clothing:
Change the color of the man's jacket from black to dark green. Keep everything else unchanged.
Style:
Turn the whole video into a soft 3D animated style with warm colors. Keep the composition, movements and timing the same.
New Year atmosphere:
Add festive New Year decorations: string lights, a decorated fir tree in the corner, light snow outside the window. Keep the people and their movements unchanged.
Tips
- One edit at a time. Weather, then time of day, then clothing.
- Start with 5 seconds in 720p (105 tokens) to check how the model understood the edit.
- Short clips are more stable: at 30 seconds there is a higher chance that something will «drift».
- A good source: a steady camera, good light, no heavy blur.
Sound
The model does not create new sound; the sound of the original clip stays. If the edit changes the atmosphere (for example, you added snowfall), lay a matching sound over it during editing: how to add voice to a video.
What not to do
- Do not replace the faces and identity of real people without consent: deepfakes and the law.
- Do not use editing to make a product look better than it is in advertising.
- Do not edit other people’s clips without the author’s permission.
Prices
| Resolution | 5 s | 10 s | 30 s |
|---|---|---|---|
| 720p | 105 | 208 (~329 rub.) | 623 (~985 rub.) |
| 1080p | 156 | 311 (~492 rub.) | 931 (~1472 rub.) |
Prices in tokens on KADR, November 2026. Rubles at the base package rate, cheaper on larger packages. This is not a public offer.
In short
A finished video can be changed with AI without reshooting: in Kling 4.0 you upload a clip from 3 to 30 seconds and describe the edit, and the result has the same length with the original sound. Weather, time of day, background, clothing and style work best. Start with 5 seconds in 720p for 105 tokens.
