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

# Expand Video Prompt

> Expands a simple video prompt into a detailed, cinematic description.
This is a **synchronous** operation that returns the expanded prompt directly.

## Overview

Expands a simple video prompt into a detailed, cinematic description. This is a **synchronous** operation that returns the expanded prompt directly — no task polling required.

Use this to improve your video generation results by converting short prompts into rich, descriptive scenes.

### Example

**Input:**

```
a group of pigs flying in the sky
```

**Output:**

```
## Living Diorama Scene: Swine Ascent

**Scene:** A trio of miniature pigs soar gracefully through a vast,
sun-drenched sky filled with fluffy cumulus clouds...
```


## OpenAPI

````yaml POST /gemini/video/prompt/expand
openapi: 3.0.0
info:
  title: Gemini AI
  description: API documentation for Gemini AI
  version: 1.0.0
  contact: {}
servers:
  - url: https://api.mountsea.ai
    description: API Gateway
security: []
tags:
  - name: gemini
    description: ''
paths:
  /gemini/video/prompt/expand:
    post:
      tags:
        - gemini
      summary: Expand video prompt
      description: >-
        Expands a simple video prompt into a detailed, cinematic description.

        This is a **synchronous** operation that returns the expanded prompt
        directly.
      operationId: ApiPublicController_expandPrompt
      parameters: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/PromptExpandDto'
      responses:
        '200':
          description: ''
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PromptExpandResultDto'
      security:
        - bearerAuth: []
components:
  schemas:
    PromptExpandDto:
      type: object
      properties:
        prompt:
          type: string
          description: Original prompt to expand
          example: a group of pigs flying in the sky
      required:
        - prompt
    PromptExpandResultDto:
      type: object
      properties:
        originalPrompt:
          type: string
          description: Original prompt
          example: a group of pigs flying in the sky
        expandedPrompt:
          type: string
          description: Expanded cinematic prompt
          example: |-
            ## Living Diorama Scene: Swine Ascent

            **Scene:** A trio of miniature pigs...
      required:
        - originalPrompt
        - expandedPrompt
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT

````