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

# Burn text overlay onto video

> Burns text overlay onto a video using FFmpeg ASS subtitles. Supports TikTok-safe zones, configurable font size, stroke thickness, and top/center/bottom positioning. Returns CDN URL of the result. Daily limit: 50/day (resets 00:00 UTC).



## OpenAPI

````yaml /openapi/spec.json post /v1/overlay
openapi: 3.0.0
info:
  title: VidJutsu API
  version: 2026-05-24-2
servers:
  - url: https://api.vidjutsu.ai
    description: Production
    variables: {}
security:
  - BearerAuth: []
tags:
  - name: Assets
  - name: Editor Projects
  - name: Scrape
  - name: Billing
  - name: API Keys
  - name: Usage
  - name: Info
  - name: Pricing
  - name: Subscriptions
  - name: Auth
  - name: Accounts
  - name: Posts
  - name: References
  - name: Upload
  - name: Watch
  - name: Extract
  - name: Transcribe
  - name: Check
  - name: Compliance
  - name: Overlay
  - name: Disclaimer
  - name: Agent
paths:
  /v1/overlay:
    post:
      tags:
        - Overlay
      summary: Burn text overlay onto video
      description: >-
        Burns text overlay onto a video using FFmpeg ASS subtitles. Supports
        TikTok-safe zones, configurable font size, stroke thickness, and
        top/center/bottom positioning. Returns CDN URL of the result. Daily
        limit: 50/day (resets 00:00 UTC).
      operationId: createOverlay
      parameters: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/OverlayRequest'
      responses:
        '200':
          description: The request has succeeded.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/OverlayResponse'
        '403':
          description: >-
            HTTP 403 Forbidden — a valid API key with no active subscription
            called a gated endpoint. Body is the standard ApiError with
            error="subscription_required".
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
        '429':
          description: >-
            HTTP 429 Too Many Requests — a per-endpoint daily rate limit was
            exceeded. The limit window is fixed and resets at 00:00 UTC. Body is
            the standard ApiError; a Retry-After header carries the seconds
            until reset.
          headers:
            Retry-After:
              required: false
              schema:
                type: integer
                format: int32
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
components:
  schemas:
    OverlayRequest:
      type: object
      required:
        - videoUrl
        - text
      properties:
        videoUrl:
          type: string
          description: URL of the source video
        text:
          type: string
          description: Overlay text. Use \\n for line breaks.
        position:
          type: string
          enum:
            - top
            - center
            - bottom
          description: Vertical text placement
        fontSize:
          type: integer
          format: int32
          description: Font size in pixels. Defaults to 4% of video height.
        strokeThickness:
          type: integer
          format: int32
          description: Text outline thickness (0-10). Defaults to 2.
    OverlayResponse:
      type: object
      required:
        - id
        - resultUrl
      properties:
        id:
          type: string
          description: Overlay asset ID
        resultUrl:
          type: string
          description: CDN URL of the overlaid video
    ApiError:
      type: object
      required:
        - error
        - message
      properties:
        error:
          type: string
        message:
          type: string
        setup:
          type: string
  securitySchemes:
    BearerAuth:
      type: http
      scheme: bearer

````