Mirage Video Generation API

openapi: 3.0.3
info:
  title: Mirage Video API
  description: >
    API for AI-powered video generation, video captioning, text-to-speech, and
    Meta text overlay generation. Served at api.mirage.app under the Captions /
    Mirage platform. All endpoints require an x-api-key header for authentication.
  version: 0.0.1
  contact:
    name: Captions API Support
    url: https://captions.ai/help/docs/api/overview
servers:
  - url: https://api.mirage.app
    description: Mirage API production server

security:
  - ApiKeyAuth: []

tags:
  - name: Videos
    description: Create and list AI-generated videos
  - name: Video Captions
    description: Add AI captions to videos and manage caption templates
  - name: Audio
    description: Text-to-speech audio generation
  - name: Meta Text Overlays
    description: Render static text overlays onto videos

paths:
  /v1/videos:
    post:
      tags: [Videos]
      summary: Create Video
      operationId: createVideo
      parameters:
        - $ref: '#/components/parameters/XApiKey'
      requestBody:
        required: true
        content:
          multipart/form-data:
            schema:
              $ref: '#/components/schemas/CreateVideoRequest'
      responses:
        '200':
          description: Returns a Video object representing the generation job
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MAVideo'
        '422':
          $ref: '#/components/responses/ValidationError'
    get:
      tags: [Videos]
      summary: List Videos
      description: >
        List videos for the authenticated API key with optional pagination.
        Filters by the calling user's ID (and org if present). Ordered by
        creation time ascending or descending. Supports cursor pagination using
        the `after` video ID.
      operationId: listVideos
      parameters:
        - $ref: '#/components/parameters/XApiKey'
        - name: after
          in: query
          description: Return items strictly after this video ID
          schema:
            type: string
        - name: limit
          in: query
          description: Max number of items to return
          schema:
            type: integer
            minimum: 1
            maximum: 100
            default: 20
        - name: order
          in: query
          description: Sort order by creation time
          schema:
            type: string
            enum: [asc, desc]
            default: desc
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/MAVideo'
        '422':
          $ref: '#/components/responses/ValidationError'

  /v1/videos/{video_id}:
    get:
      tags: [Videos]
      summary: Retrieve Video
      description: Get the status of a video.
      operationId: getVideo
      parameters:
        - $ref: '#/components/parameters/XApiKey'
        - name: video_id
          in: path
          required: true
          schema:
            type: string
      responses:
        '200':
          description: Returns a Video object with the current generation status
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MAVideo'
        '422':
          $ref: '#/components/responses/ValidationError'

  /v1/videos/{video_id}/content:
    get:
      tags: [Videos]
      summary: Retrieve Video Content
      description: Download the video file (redirects to video URL).
      operationId: getVideoContent
      parameters:
        - $ref: '#/components/parameters/XApiKey'
        - name: video_id
          in: path
          required: true
          schema:
            type: string
      responses:
        '200':
          description: Redirects to video file
        '422':
          $ref: '#/components/responses/ValidationError'

  /v1/videos/captions:
    post:
      tags: [Video Captions]
      summary: Add Captions to a Video
      description: >
        Create a captioned video from either an uploaded video file or an
        existing video ID. You must provide exactly one of: `video` (file
        upload, .mp4 or .mov, max 50 MB, 9:16 aspect ratio) or `video_id`
        (existing video ID). If providing `video_id`, the source video must
        have status COMPLETE. Billing is $0.15 per minute of input video,
        rounded up. Poll via GET /v1/videos/{video_id}.
      operationId: addCaptions
      parameters:
        - $ref: '#/components/parameters/XApiKey'
      requestBody:
        required: true
        content:
          multipart/form-data:
            schema:
              $ref: '#/components/schemas/AddCaptionsRequest'
      responses:
        '200':
          description: Returns a Video object representing the captioning job
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MAVideo'
              example:
                id: video_cap789xyz
                object: video
                status: PROCESSING
                created_at: 1730822600
                progress: 0
                source_video_id: null
                caption_template_id: ctpl_DxflLOnuKkb198FNdI9E
                video_id: video_cap789xyz
        '422':
          $ref: '#/components/responses/ValidationError'

  /v1/videos/captions/templates:
    get:
      tags: [Video Captions]
      summary: List Caption Templates
      description: >
        List available caption style templates. Returns a paginated list of
        templates that can be used when creating captioned videos.
      operationId: listCaptionTemplates
      parameters:
        - $ref: '#/components/parameters/XApiKey'
        - name: limit
          in: query
          description: Max number of items to return
          schema:
            type: integer
            minimum: 1
            maximum: 100
            default: 20
        - name: after
          in: query
          description: Return items strictly after this template ID
          schema:
            type: string
      responses:
        '200':
          description: Returns a paginated list of available caption templates
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MACaptionTemplateList'
        '422':
          $ref: '#/components/responses/ValidationError'

  /v1/videos/captions/templates/{template_id}:
    get:
      tags: [Video Captions]
      summary: Retrieve Caption Template
      operationId: getCaptionTemplate
      parameters:
        - $ref: '#/components/parameters/XApiKey'
        - name: template_id
          in: path
          required: true
          schema:
            type: string
      responses:
        '200':
          description: Returns a caption template
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MACaptionTemplate'
        '422':
          $ref: '#/components/responses/ValidationError'

  /v1/audio/text-to-speech/{voice_id}:
    post:
      tags: [Audio]
      summary: Generate Speech from Text
      description: >
        Generate speech from text using the specified voice and model.
        Synchronously generates audio and returns binary data directly.
        The request blocks until TTS generation is complete.
      operationId: generateSpeech
      parameters:
        - $ref: '#/components/parameters/XApiKey'
        - name: voice_id
          in: path
          required: true
          description: Voice ID to use for TTS generation
          schema:
            type: string
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/TTSRequest'
      responses:
        '200':
          description: Returns the generated audio file as binary data
          content:
            audio/wav:
              schema:
                type: string
                format: binary
        '422':
          $ref: '#/components/responses/ValidationError'

  /v1/meta/text_overlays:
    post:
      tags: [Meta Text Overlays]
      summary: Create Meta Text Overlay
      description: >
        Render static text overlays onto an uploaded video. Upload once and
        render up to 4 related text variants against the same input video.
      operationId: createMetaTextOverlay
      parameters:
        - $ref: '#/components/parameters/XApiKey'
      requestBody:
        required: true
        content:
          multipart/form-data:
            schema:
              $ref: '#/components/schemas/CreateMetaTextOverlayRequest'
      responses:
        '200':
          description: Returns a MetaTextOverlay job object
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MetaTextOverlay'
              example:
                id: d7f76ec6-2500-4d23-a2bc-648f4e904555
                object: text_overlay
                status: QUEUED
                created_at: 1730822400
                results: []
        '422':
          $ref: '#/components/responses/ValidationError'

  /v1/meta/text_overlays/{text_overlay_id}:
    get:
      tags: [Meta Text Overlays]
      summary: Retrieve Meta Text Overlay
      operationId: getMetaTextOverlay
      parameters:
        - $ref: '#/components/parameters/XApiKey'
        - name: text_overlay_id
          in: path
          required: true
          schema:
            type: string
      responses:
        '200':
          description: Returns the MetaTextOverlay job object
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MetaTextOverlay'
        '422':
          $ref: '#/components/responses/ValidationError'

components:
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: x-api-key

  parameters:
    XApiKey:
      name: x-api-key
      in: header
      required: true
      description: API Key for authentication
      schema:
        type: string

  responses:
    ValidationError:
      description: Validation Error
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/HTTPValidationError'

  schemas:
    MAVideo:
      type: object
      required: [id, status, created_at, video_id]
      description: >
        Represents a video object. A video can be created via generation
        (image+audio) or captioning (adding captions to an existing video).
      properties:
        id:
          type: string
          description: Video generation job ID
          example: video_abc123def456
        object:
          type: string
          enum: [video]
          default: video
        status:
          type: string
          enum: [PROCESSING, COMPLETE, FAILED, CANCELLED]
          description: Current state of the video
          example: COMPLETE
        created_at:
          type: integer
          description: When the video was created (unix timestamp)
          example: 1730822400
        completed_at:
          type: integer
          nullable: true
          description: When processing completed (unix timestamp)
          example: 1730822520
        progress:
          type: integer
          nullable: true
          description: Progress percentage (0-100)
          example: 100
        error:
          nullable: true
          allOf:
            - $ref: '#/components/schemas/MAVideoError'
          description: Error details if status is FAILED
        model:
          type: string
          nullable: true
          enum: [mirage-video-1-latest]
          description: Model used for generation (only for source=generation)
          example: mirage-video-1-latest
        source_video_id:
          type: string
          nullable: true
          description: The input video that was captioned (only for source=caption)
          example: video_abc123def456
        caption_template_id:
          type: string
          nullable: true
          description: Caption style template used (only for source=caption)
          example: ctpl_123456789abcdefg
        share_link_url:
          type: string
          nullable: true
          description: Public share link for a completed internal video, when enabled
          example: https://captions.ai/share/eyJ2Ijox.../share-token
        video_id:
          type: string
          description: "[Deprecated] Use \"id\" instead."
          deprecated: true

    MAVideoError:
      type: object
      required: [code, message]
      description: Error payload that explains why generation failed, if applicable
      properties:
        code:
          type: string
          description: Error code
          example: rate_limit_exceeded
        message:
          type: string
          description: Error message
          example: Rate limit exceeded. Please try again later.

    MACaptionTemplate:
      type: object
      required: [id, name, created_at]
      description: Represents a caption style template
      properties:
        id:
          type: string
          description: Unique template identifier
          example: ctpl_123456789abcdefg
        object:
          type: string
          enum: [caption_template]
          default: caption_template
        name:
          type: string
          description: Human-readable template name
          example: Bold White
        preview_url:
          type: string
          nullable: true
          description: URL to a preview video of the template
          example: https://captions-cdn.xyz/studio-assets/captions-style-previews/1FA3A381-5DDF-4ECD-936B-63D7CF16DEB0.mp4
        created_at:
          type: integer
          description: When the template was created (unix timestamp)
          example: 1730000000

    MACaptionTemplateList:
      type: object
      required: [data, has_more]
      description: Paginated list of caption templates
      properties:
        data:
          type: array
          items:
            $ref: '#/components/schemas/MACaptionTemplate'
          description: List of caption templates
        object:
          type: string
          enum: [list]
          default: list
        has_more:
          type: boolean
          description: Whether there are more templates after this page

    MetaTextOverlay:
      type: object
      required: [id, status, created_at]
      description: Represents a Meta text overlay job.
      properties:
        id:
          type: string
          description: Text overlay job ID
        object:
          type: string
          enum: [text_overlay]
          default: text_overlay
        status:
          type: string
          enum: [QUEUED, PROCESSING, COMPLETE, FAILED, CANCELLED]
          description: Current state of the text overlay job
        created_at:
          type: integer
          description: When the job was created (unix timestamp)
        completed_at:
          type: integer
          nullable: true
          description: When processing reached a terminal state (unix timestamp)
        results:
          type: array
          items:
            $ref: '#/components/schemas/MetaTextOverlayResult'
          description: Ordered per-text render results for this job
        error:
          nullable: true
          allOf:
            - $ref: '#/components/schemas/MAVideoError'
          description: Error details if the job failed before itemized completion

    MetaTextOverlayResult:
      type: object
      required: [index, text, status]
      description: Per-text result for a Meta text overlay job.
      properties:
        index:
          type: integer
          description: Zero-based index matching the input texts order
        text:
          type: string
          description: Input text for this rendered output
        status:
          type: string
          enum: [COMPLETE, FAILED]
          description: Terminal status for this item
        video_url:
          type: string
          nullable: true
          description: Resolved output video URL when this item completed successfully
        error:
          nullable: true
          allOf:
            - $ref: '#/components/schemas/MAVideoError'
          description: Error details when this item failed

    TTSRequest:
      type: object
      required: [text, model]
      description: Request body for text-to-speech generation
      properties:
        text:
          type: string
          description: The text to convert to speech
          example: Hello, welcome to Mirage!
        model:
          type: string
          enum: [mirage-audio-1]
          description: TTS model to use for generation
          example: mirage-audio-1

    CreateVideoRequest:
      type: object
      required: [image_reference, audio_reference]
      description: >
        Request body for creating a new AI video generation job. Requires an
        image reference (JPEG or PNG) and audio reference (WAV or MP3).
      properties:
        image_reference:
          type: string
          format: binary
          description: Image file (JPEG or PNG)
        audio_reference:
          type: string
          format: binary
          description: Audio file (WAV or MP3)
        model:
          type: string
          enum: [mirage-video-1-latest]
          default: mirage-video-1-latest
          description: Model to use for generation

    AddCaptionsRequest:
      type: object
      required: [caption_template_id]
      description: >
        Request body for adding captions to a video. Provide either a video
        file upload or an existing video_id, not both.
      properties:
        caption_template_id:
          type: string
          description: Caption style template ID
          example: ctpl_yvE0ZnYzEj6ClCD2ee1f
        video:
          type: string
          format: binary
          nullable: true
          description: >
            Video file to caption (MP4, MOV). Must be 9:16 aspect ratio.
            Max 50 MB. Either video or video_id must be provided.
        video_id:
          type: string
          nullable: true
          description: >
            Existing video ID to add captions to. Either video or video_id
            must be provided.

    CreateMetaTextOverlayRequest:
      type: object
      required: [video]
      description: >
        Request body for creating a Meta text overlay job. Upload once and
        render up to 4 related text variants.
      properties:
        video:
          type: string
          format: binary
          description: Source video file (MP4 or MOV).
        texts:
          type: array
          nullable: true
          items:
            type: string
          description: Ordered text variants to render as static overlays (max 4).
        items:
          type: string
          nullable: true
          description: >
            Optional JSON array of item objects. Each item must contain text
            and may contain style.font, style.size, and style.color.
        fonts:
          type: array
          nullable: true
          items:
            type: string
          description: Optional ordered font overrides aligned by index with texts.
        sizes:
          type: array
          nullable: true
          items:
            type: string
          description: Optional ordered font size overrides in pixels aligned by index with texts.
        colors:
          type: array
          nullable: true
          items:
            type: string
          description: Optional ordered text color overrides (#RRGGBB) aligned by index with texts.

    HTTPValidationError:
      type: object
      properties:
        detail:
          type: array
          items:
            $ref: '#/components/schemas/ValidationError'

    ValidationError:
      type: object
      required: [loc, msg, type]
      properties:
        loc:
          type: array
          items:
            oneOf:
              - type: string
              - type: integer
        msg:
          type: string
        type:
          type: string