# Kling 4.0 (https://docs.fuser.studio/docs/nodes/video/kling-4-0)

_Provided by [Fal](https://fal.ai) — [Learn More](https://fal.ai/models/kling/v4/text-to-video)._

Model page: https://fuser.studio/models/kling-4-0

## Inputs [#inputs]

- **Prompt** (`textarea`) — Describe the video; cite references as @Image1, @Video1, and so on.

- **Start Image** (`image`) — First frame, at least 300 px. A start image selects image-to-video unless reference media is also connected.

   Optional: `true`

- **End Image** (`image`) — Optional last frame for image-to-video; requires a start image and is not used with reference media.

   Optional: `true`

- **Reference Images** (`image`) _(accepts multiple)_ — Up to 10 images, including the start image, that guide subjects, scenes, or style. Cite them as @Image1, @Image2, and so on.

   Optional: `true`

- **Reference Videos** (`video`) _(accepts multiple)_ — Up to 5 clips of 3 to 30 seconds each, 30 seconds combined, at least 700 px and 24 to 60 fps. Cite them as @Video1, @Video2, and so on.

   Optional: `true`

- **Duration** (`slider`) — Video duration in seconds, from 3 to 30.

   Optional: `true` • Default: `5` • Minimum: `3` • Maximum: `30`

- **Aspect Ratio** (`dropdown`) — Aspect ratio of the video. Auto adapts it to the reference media.

   Optional: `true` • Default: `16:9` • Accepts: `16:9`, `9:16`, `1:1`, `21:9`, `Auto`

- **Resolution** (`dropdown`) — Output resolution.

   Optional: `true` • Default: `1080p` • Accepts: `720p`, `1080p`

## Outputs [#outputs]

- **Generated Video** (`video`) — The generated video.