Koor AI

Feature · Video editing

Edit an existing video with Kling 4.0

Kling 4.0 Video Edit changes what you ask for in a clip you already have and keeps the rest of the take: the timing, the motion and, by default, the original sound.

Edit a video

In short

  • Upload one video of 3 to 30 seconds that you own or have permission to use.
  • Describe the change; add up to 10 images and 3 audio clips as references if needed.
  • Output at 720p or 1080p, with the original sound kept.
  • 3 credits per counted second at 720p, 4 at 1080p; the exact quote is shown before you start.

What you can change

  • Swap a person, outfit or product for one in a reference image.
  • Change the setting, time of day or weather.
  • Remove an object or restyle the whole clip.

Write the edit, not the whole scene

Call your clip @Video1 and say only what should change. Everything you do not mention is meant to stay as it is.

Example edit prompt
In @Video1, replace the jacket with the red coat from @Image1 and make it snow; keep everything else the same.

Price in this studio

Video Edit costs 3 credits per counted second at 720p and 4 at 1080p. Counted seconds are the output length plus the longer of the output length and your clip’s length. A 10-second edit of a 10-second clip counts 20 seconds: 60 credits at 720p or 80 at 1080p.

How to edit a clip here

  1. Choose Kling 4.0 · Video Edit in the model selector.
  2. Upload your clip, plus any reference images or audio.
  3. Describe the change, pick the length and resolution, and check the quote.

Frequently asked questions

How long can my video be?

Between 3 and 30 seconds.

Is the original sound kept?

Yes, the original audio of your clip is kept.

Can I edit only one part of the frame?

Describe the part you want changed and say that the rest should stay the same; there is no mask tool.

What if an edit fails?

Confirmed failed edits return the reserved credits to your balance.

Sources

Updated 2026-10-26. Koor AI is an independent video studio, not affiliated with or endorsed by Kuaishou or Kling AI. Kling model names belong to their respective owners. Each generation uses the model selected in the workspace.