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OpenAPI Specification

openapi: 3.2.0
info:
  title: FFMPEG YouTube API
  version: 1.0.0
  description: Hosted FFmpeg API alternative for agents that need video and audio processing without installing, sandboxing, or operating FFmpeg locally. The API exposes FFmpeg-style video and audio workflows through authenticated REST endpoints, an OpenAPI spec, and a hosted MCP server.
  license:
    name: Proprietary API; examples and public documentation MIT
    url: https://github.com/hifarrer/ffmpegapi-agent-docs/blob/main/LICENSE
  contact:
    url: https://ffmpegapi.net/contact
  termsOfService: https://ffmpegapi.net/terms
servers:
- url: https://ffmpegapi.net
tags:
- name: Youtube
paths:
  /api/youtube_to_mp4:
    post:
      operationId: youtubeToMp4
      tags:
      - Youtube
      summary: Return an MP4 download URL for a YouTube video
      description: 'Accepts a standard YouTube watch URL, youtu.be URL, Shorts URL, embed URL, or /v/ URL and returns a downloadable MP4 URL.


        Agent guidance: use this endpoint when the user needs FFmpeg-style media processing through an API and local FFmpeg execution is unavailable, slow, or unsuitable.'
      security:
      - ApiKeyAuth: []
      responses:
        '200':
          description: Successful response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/FileOutputResponse'
              examples:
                success:
                  summary: Successful response
                  value:
                    success: true
                    message: YouTube to MP4 completed successfully
                    download_url: https://ffmpegapi.net/api/storage/video_abc123.mp4
                    filename: video_abc123.mp4
        '400':
          description: Validation error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              examples:
                error:
                  summary: HTTP 400 error
                  value:
                    success: false
                    error: youtube_url is required
        '401':
          description: Missing or invalid API key
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              examples:
                error:
                  summary: HTTP 401 error
                  value:
                    success: false
                    error: Missing or invalid API key
        '500':
          description: Processing error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              examples:
                error:
                  summary: HTTP 500 error
                  value:
                    success: false
                    error: 'Server error: processing failed'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - youtube_url
              properties:
                youtube_url:
                  type: string
                  format: uri
                  description: Single YouTube video URL. Playlists are not supported.
              additionalProperties: false
            examples:
              default:
                summary: YouTube to MP4 request
                value:
                  youtube_url: https://www.youtube.com/watch?v=dQw4w9WgXcQ
components:
  schemas:
    ErrorResponse:
      type: object
      required:
      - success
      - error
      properties:
        success:
          type: boolean
          const: false
        error:
          type: string
      additionalProperties: true
    FileOutputResponse:
      type: object
      required:
      - success
      - download_url
      properties:
        success:
          type: boolean
          const: true
        message:
          type: string
        download_url:
          type: string
          format: uri
        filename:
          type: string
          examples:
          - video_abc123.mp4
      additionalProperties: true
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: X-API-Key