Mux Captions and Transcripts API

openapi: 3.2.0
info:
  title: Mux Captions and Transcripts API
  description: Mux is how developers build online video. This API encompasses both Mux Video and Mux Data functionality to help you build your video-related projects better and faster than ever before.
  version: v1
  contact:
    name: Mux DevEx
    url: https://docs.mux.com
    email: devex@mux.com
servers:
- url: https://api.mux.com
  description: Mux Production API
- url: https://image.mux.com
- url: https://stream.mux.com
- url: https://stats.mux.com
tags:
- name: Captions and Transcripts
  description: APIs for retrieving captions and transcripts from videos hosted using Mux that have had captions generated automatically.
  x-displayName: Captions and Transcripts
paths:
  /{PLAYBACK_ID}/text/{TRACK_ID}.vtt:
    get:
      summary: Retrieve a WebVTT File for a Text Track
      description: Fetch a standalone WebVTT version of a text track from an asset.
      operationId: get-vtt-text-track
      servers:
      - url: https://stream.mux.com
      tags:
      - Captions and Transcripts
      parameters:
      - $ref: '#/components/parameters/playback_id'
      - $ref: '#/components/parameters/track_id'
      - $ref: '#/components/parameters/token'
      responses:
        '200':
          description: WebVTT retrieved successfully.
          content:
            text/vtt:
              schema:
                type: string
        '400':
          description: Invalid request due to missing or incorrect parameters.
          content:
            application/json:
              schema:
                $ref: '#/paths/~1%7BPLAYBACK_ID%7D.m3u8/get/responses/400/content/application~1json/schema'
              example:
                code: 3
                message: Invalid parameter
        '404':
          description: The requested text track was not found.
          content:
            application/json:
              schema:
                $ref: '#/paths/~1%7BPLAYBACK_ID%7D.m3u8/get/responses/400/content/application~1json/schema'
              example:
                code: 5
                message: Not Found
  /{PLAYBACK_ID}/text/{TRACK_ID}.txt:
    get:
      summary: Retrieve a Transcript
      description: Fetch a [transcript of an asset](https://docs.mux.com/guides/add-autogenerated-captions-and-use-transcripts#retrieve-a-transcript). This is only possible for assets with a text track generated using the [VOD generated captions feature](https://docs.mux.com/guides/add-autogenerated-captions-and-use-transcripts).
      operationId: get-transcript
      servers:
      - url: https://stream.mux.com
      tags:
      - Captions and Transcripts
      parameters:
      - $ref: '#/components/parameters/playback_id'
      - $ref: '#/components/parameters/track_id'
      - $ref: '#/components/parameters/token'
      responses:
        '200':
          description: Transcript retrieved successfully.
          content:
            text/plain:
              schema:
                type: string
        '400':
          description: Invalid request due to missing or incorrect parameters.
          content:
            application/json:
              schema:
                $ref: '#/paths/~1%7BPLAYBACK_ID%7D.m3u8/get/responses/400/content/application~1json/schema'
              example:
                code: 3
                message: Invalid parameter
        '404':
          description: The requested text track was not found.
          content:
            application/json:
              schema:
                $ref: '#/paths/~1%7BPLAYBACK_ID%7D.m3u8/get/responses/400/content/application~1json/schema'
              example:
                code: 5
                message: Not Found
components:
  parameters:
    playback_id:
      name: PLAYBACK_ID
      in: path
      description: The asset or live stream's playback ID.
      required: true
      schema:
        type: string
    token:
      name: TOKEN
      in: query
      description: Signed token (JWT) for [secure video playback](https://docs.mux.com/guides/secure-video-playback).
      schema:
        type: string
    track_id:
      name: TRACK_ID
      in: path
      description: The ID of the track for an asset.
      required: true
      schema:
        type: string
  securitySchemes:
    accessToken:
      description: 'The Mux Video API uses an Access Token and Secret Key for authentication. If you haven''t already, [generate a new Access Token](https://dashboard.mux.com/settings/access-tokens) in the Access Token settings of your Mux account dashboard.


        Once you have an Access Token ID and Secret, you can then simply include those as the username (id) and password (secret) in the same way you use traditional basic auth.

        '
      scheme: basic
      type: http
    authorizationToken:
      description: 'OAuth authorization token, used as a Bearer Auth header

        '
      scheme: bearer
      type: http
x-tagGroups:
- name: Video
  tags:
  - Assets
  - Live Streams
  - Playback ID
  - URL Signing Keys
  - Direct Uploads
  - Delivery Usage
  - Playback Restrictions
  - DRM Configurations
  - Transcription Vocabularies
- name: Data
  tags:
  - Video Views
  - Errors
  - Filters
  - Exports
  - Metrics
  - Monitoring
  - Real-Time
  - Dimensions
  - Incidents
  - Annotations
  - View and Viewer Counts
- name: System
  tags:
  - Signing Keys
  - Utilities
- name: Robots
  tags:
  - Jobs
  - Ask Questions
  - Edit Captions
  - Find Key Moments
  - Generate Chapters
  - Moderate
  - Summarize
  - Translate Captions
- name: Playback
  tags:
  - Thumbnails
  - Animated Images
  - Storyboards
  - Streaming
  - Captions and Transcripts