> ## Documentation Index
> Fetch the complete documentation index at: https://docs.myrouter.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# KLING V1.6 Image-to-Video

KLING V1.6 Image-to-Video is an AI image-to-video model developed by the Kuaishou AI team. It can transform images into dynamic 5-second videos, supporting 720p / 1080p resolution, with high-quality visual output and enhanced motion and semantic understanding.

<Tip>
  This is an **async** API that only returns the task\_id of the async task. Use the task\_id to call the [Get Async Task Result API](/docs/models/reference-get-async-task-result) to retrieve the generated result.
</Tip>

## Request Headers

<ParamField header="Content-Type" type="string" required={true}>
  Enum: `application/json`
</ParamField>

<ParamField header="Authorization" type="string" required={true}>
  Bearer authentication format: Bearer \{\{API Key}}.
</ParamField>

## Request Body

<ParamField body="mode" type="string" required={false}>
  Video generation mode.

  Supported:

  * `Standard`: Fast generation, lower cost, produces 720p video.
  * `Professional`: High quality, higher cost, produces 1080p video, and allows setting an end frame.

  Default: `Standard`.
</ParamField>

<ParamField body="image_url" type="string" required={true}>
  URL of the starting frame image for video generation.
</ParamField>

<ParamField body="end_image_url" type="string" required={false}>
  URL of the ending frame image for video generation.

  <Warning>Only available when `mode` is `Professional`.</Warning>
</ParamField>

<ParamField body="prompt" type="string" required={true}>
  Prompt to guide the generation.

  Range: `1 <= x <= 2000`.
</ParamField>

<ParamField body="negative_prompt" type="string" required={false}>
  Negative prompt to indicate content the model should avoid generating.

  Range: `0 <= x <= 2000`.
</ParamField>

<ParamField body="duration" type="integer" required={false}>
  Duration of the generated video (in seconds). Default: `5`.<br />
  Possible values: `5`, `10`
</ParamField>

<ParamField body="guidance_scale" type="float" required={false}>
  Guidance scale parameter that controls how closely the generated content adheres to the prompt.

  Range: `0 <= x <= 1`. Default: `0.5`.
</ParamField>

## Response

<ResponseField name="task_id" type="string" required={true}>
  The task\_id of the async task. Use the task\_id to call the [Get Async Task Result API](/docs/models/reference-get-async-task-result) to retrieve the generated result.
</ResponseField>