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Kling 4.0 Video Editing

All video to video models

Kling 4.0 edits an input video using text instructions and optional image references, producing 3 to 30-second videos at 720p or 1080p.

Inference$ Commercial useFrom 68 credits per run

About Kling 4.0 Video Editing

Kling 4.0 edits an input video using text instructions and optional image references, producing 3 to 30-second videos at 720p or 1080p.

video-to-videovideo-editingimage-referencekling

Pricing

A run with the default settings costs 68 credits. The exact cost updates in the playground as you change settings, and you're only charged when you press Run. Failed runs are refunded automatically.

Inputs

prompttextarearequired

Edit instruction. Reference the source video as @Video1.

video_urlfilerequired

The video to edit (3-30s), referenced as @Video1. Max file size: 300.0MB, Min width: 700px, Min height: 700px, Max width: 4553px, Max height: 4553px, Min aspect ratio: 0.40, Max aspect ratio: 2.50, Min duration: 3.0s, Max duration: 30.05s, Min FPS: 23.9, Max FPS: 60.05, Timeout: 30.0s

image_urlsfile-list

Reference images, referenced as @Image1, @Image2, ...

video_urlsfile-list

Reference videos, referenced as @Video2, @Video3, ... (max 4). The source, reference and element videos must total at most 30s.

elementsjson

Characters/objects, referenced as @Element1, @Element2, ... (max 7). Up to 3 elements may carry a voice_id and up to 3 may be video elements.

voice_idsstring-list

Voices referenced in the prompt as @Voice1, @Voice2, ... (max 3, including voices bound to elements). Create one with https://fal.ai/models/fal-ai/kling-video/create-voice

start_image_urlfile

Optional image to use as the first frame. Counts toward the image reference limit.

middle_image_urlsfile-list

Optional ordered keyframes between the first and last frames (max 8). Count toward the image reference limit.

end_image_urlfile

Optional image to use as the last frame. Counts toward the image reference limit.

durationintegerdefault: 3

Output duration in seconds (3-30). Defaults to the source video's length.

resolutionselectdefault: "1080p"

Output resolution.

Options: 720p, 1080p

aspect_ratioselect

Aspect ratio of the edited video. 'auto' adapts it to the inputs. Omit to follow the source video.

Options: auto, 16:9, 9:16, 1:1, 21:9

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