Kling 4.0 Edit Video: Replace, Remove or Restyle a Clip
Last verified: October 29, 2026
Kling 4.0 changes a video you already have based on a written instruction. It can swap a product or character, take out something that shouldn't be in the shot, or restyle the whole clip, and it accepts up to 10 reference images that show what anything new should look like. Those images give a Kling 4.0 edit video job something exact to match. You don't have to describe a bottle, a costume or a location in words. You show the model the real thing.
Kling calls this mode precise video editing. It makes targeted changes to a performance, the camera, the overall look or the background, and the rest of the scene is kept stable. If a take has the right timing and performance but one wrong element, you can fix that element and keep the take. That means fewer full regenerations and quicker iteration.
The form is built the same way. Your clip goes in Video and pictures of anything new go in Add Reference Image. The instruction goes in Prompt. Resolution and Sound control how the edit is delivered, including whether your recorded audio stays under the new picture or is replaced by sound generated for the edit.
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Kling 4.0 Video Editing at a Glance
What goes in, what you can set and what comes back from each run.
Input
Video (MP4 or MOV, up to 50 MB) + up to 10 images (JPG, JPEG, PNG or WEBP, up to 10 MB each) (optional) + a text prompt of up to 5,000 characters
Resolution
720p or 1080p
Sound
Keep original or New sound
Output
1 video per run
Prompt Techniques for Cleaner Kling 4.0 Edits
Open With Edit @Video1 and Name What Must Stay
Give Each Reference Image One Clear Job
Rewrite a Spoken Line and Let Sound Generate the New Audio
How to Edit a Video With Kling 4.0
Six steps take you from uploading the clip to downloading the edited version.
Kling 4.0 Edits vs Masking, Fill and Timeline Editing
When a prompt-based edit is the right tool, and when a traditional method still makes more sense.
| Criterion | Kling 4.0 | Alternatives | Best For |
|---|---|---|---|
| Removing a person or object from a complex shot | A written instruction identifies the object and removes it without frame-by-frame masking, which suits quick cleanup of unwanted people or props. | Manual masking and patching in a compositing app tracks the object and replaces the area it covers, and Kling lists it as the method for complex shots that need precise control. | Start with Kling 4.0 for everyday cleanup, and switch to manual masking when a demanding shot needs hands-on control over the patch. |
| A small object on a simple background | Kling 4.0 removes it with the same kind of written instruction used for people and larger props, so every removal follows one workflow. | Content-aware fill in a desktop editor fills a selected area from the surrounding visual detail, and Kling names it as suited to small objects against simple backgrounds. | Content-aware fill is worth a first try for a small mark on a plain wall, while Kling 4.0 suits removals you'd rather describe than select by hand. |
| Cuts, timing and assembling a sequence | Kling 4.0 works inside a shot, handling a new subject, background or camera angle rather than arranging clips on a timeline. | A traditional timeline editor gives direct control over cuts, timing and sound across a whole project. | Assemble and time the sequence in a timeline editor, and bring individual shots to Kling 4.0 when one of them needs a new subject, background or angle. |
Common Kling 4.0 Editing Problems and Fixes
What usually goes wrong with an edit, why it happens and what to change before the next run.
Kling 4.0 gave me a brand-new video instead of editing my clip
The removed object left smudges or a ghost in a busy, fast-moving shot
My video won't upload
My reference image is rejected
My prompt is too long for the Prompt box
Frequently Asked Questions
Which video and image files can I upload for a Kling 4.0 edit?
The Video field is required and takes an MP4 or MOV file of up to 50 MB, between 3 and 30 seconds long. Add Reference Image is optional and takes from zero to 10 images in JPG, JPEG, PNG or WEBP, each up to 10 MB and at least 300×300 pixels. If your clip runs longer, cut it down to the part that needs the change before uploading.
Do I need reference images, or is a text prompt enough?
A prompt alone works when the change can be fully described in words. Kling's example for removing a person from the foreground uses only a written instruction. Kling recommends adding reference images to guide edits, and they matter most when the edit brings in something that has to look a specific way, such as your product, a particular face or a real location.
Can Kling 4.0 change the camera angle of a shot I already filmed?
Yes. Camera positions and camera movements are among the targeted changes Kling documents for editing, along with shot scale and viewpoint. Describe the new angle the way a camera operator would, for example a low angle from knee height, or a slow push-in instead of a static frame. List the performance, wardrobe and setting as things to keep so the new framing doesn't bring other changes with it.
Why does one edit cost more credits than another?
Each run's credit cost is calculated from the options you choose and shown above the Generate button once you're signed in. It changes with the Resolution you pick and with the length of the video you upload, so check the figure again after you switch resolution or upload a different clip.
Can I run a second edit on the video Kling 4.0 gives me?
Yes. Kling's editor is designed to start from footage you filmed or generated, so you can put a downloaded result back into the Video field for another pass, as long as the file fits the upload limits. After each round, check fine details such as faces, hands and any text in the frame before you build the next change on top of it.