> ## Documentation Index
> Fetch the complete documentation index at: https://doc.evolution-api.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Get Base64

> Get base64 from media message



## OpenAPI

````yaml openapi-v2 POST /chat/getBase64FromMediaMessage/{instance}
openapi: 3.0.3
info:
  title: Evolution API
  version: 2.1.1
servers:
  - url: https://{server-url}
    variables:
      server-url:
        default: evolution-example
        description: The URL of your EvolutionAPI server
    description: Your instance domain
security: []
paths:
  /chat/getBase64FromMediaMessage/{instance}:
    post:
      tags:
        - Chat Controller
      summary: Get Base64 From Media Message
      description: Get base64 from media message
      operationId: getBase64FromMediaMessage
      parameters:
        - name: instance
          in: path
          required: true
          description: Name instance
          schema:
            type: string
      requestBody:
        content:
          application/json:
            schema:
              type: object
              required:
                - message
                - convertToMp4
              properties:
                message:
                  type: object
                  properties:
                    key:
                      type: object
                      properties:
                        id:
                          type: string
                          description: Message ID
                convertToMp4:
                  type: boolean
                  description: Convert video to MP4, for video only
      responses:
        '200':
          description: Ok
          content: {}
      deprecated: false
      security:
        - ApiKeyAuth: []
components:
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: apikey
      description: Your authorization key header

````