> ## Documentation Index > Fetch the complete documentation index at: https://www.tella.com/docs/llms.txt > Use this file to discover all available pages before exploring further. # Apply a subtitle preset > Apply a preset returned by GET /v1/subtitle-presets. Built-in presets restore style, font, weight, and size, preserving position, grouping, and lines per block. Personal presets also restore those saved layout settings. Does not change transcript text or whether subtitles are enabled. Changes sync to open editors; reapplying the same preset is safe. ## OpenAPI ````yaml /openapi.json put /v1/videos/{id}/subtitle-preset openapi: 3.0.3 info: description: >- The Tella Public API allows you to programmatically access your videos and playlists, including transcripts, chapters, and thumbnails. ## Authentication All requests require a Bearer token in the Authorization header: ``` Authorization: Bearer tella_pk_xxxxx... ``` API keys can be generated in your Tella workspace settings. ## Rate Limiting The API is rate-limited to 100 requests per minute per user within a workspace. Rate limit information is returned in response headers: - `RateLimit-Policy`: Named quota, request limit, and window in seconds - `RateLimit`: Remaining quota and seconds until reset - `X-RateLimit-Limit`: Maximum requests per window - `X-RateLimit-Remaining`: Remaining requests in current window - `X-RateLimit-Reset`: Unix timestamp in milliseconds when the window resets A `429 Too Many Requests` response also includes `Retry-After` in seconds. title: Tella Public API version: 1.0.0 servers: - description: Production url: https://api.tella.com security: [] tags: - description: Video operations name: Videos - description: Sections of a video name: Clips - description: Playlist operations name: Playlists - description: Sidebar groups for organizing playlists name: Playlist Groups - description: Tags for categorizing and filtering videos name: Tags - description: >- Viewing analytics for a video or across the workspace: plays, watch time, retention, geography, referrers name: Analytics - description: Personal, workspace, and default video backgrounds name: Backgrounds - description: >- Reusable media saved to a workspace, plus Tella's curated sound effect and background music catalogs — the same items the editor's media panels show name: Library - description: Webhook endpoint management name: Webhooks externalDocs: description: API versioning and deprecation policy url: https://www.tella.com/docs/versioning paths: /v1/videos/{id}/subtitle-preset: put: tags: - Videos summary: Apply a subtitle preset description: >- Apply a preset returned by GET /v1/subtitle-presets. Built-in presets restore style, font, weight, and size, preserving position, grouping, and lines per block. Personal presets also restore those saved layout settings. Does not change transcript text or whether subtitles are enabled. Changes sync to open editors; reapplying the same preset is safe. operationId: applySubtitlePreset parameters: - description: Unique video identifier in: path name: id required: true schema: description: Unique video identifier example: vid_abc123def456 type: string requestBody: content: application/json: schema: properties: presetId: example: default:spotlight minLength: 1 type: string required: - presetId type: object required: true responses: '200': content: application/json: schema: additionalProperties: false properties: preset: $ref: '#/components/schemas/SubtitlePreset' required: - preset type: object description: Preset applied headers: Deprecation: $ref: '#/components/headers/Deprecation' RateLimit: $ref: '#/components/headers/RateLimit' RateLimit-Policy: $ref: '#/components/headers/RateLimitPolicy' Sunset: $ref: '#/components/headers/Sunset' X-RateLimit-Limit: $ref: '#/components/headers/XRateLimitLimit' X-RateLimit-Remaining: $ref: '#/components/headers/XRateLimitRemaining' X-RateLimit-Reset: $ref: '#/components/headers/XRateLimitReset' '400': content: application/json: example: docsUrl: https://docs.tella.com/ error: bad_request message: The request was malformed or contained invalid parameters. schema: $ref: '#/components/schemas/ErrorResponse' description: The request was malformed or contained invalid parameters. headers: Deprecation: $ref: '#/components/headers/Deprecation' RateLimit: $ref: '#/components/headers/RateLimit' RateLimit-Policy: $ref: '#/components/headers/RateLimitPolicy' Sunset: $ref: '#/components/headers/Sunset' X-RateLimit-Limit: $ref: '#/components/headers/XRateLimitLimit' X-RateLimit-Remaining: $ref: '#/components/headers/XRateLimitRemaining' X-RateLimit-Reset: $ref: '#/components/headers/XRateLimitReset' '401': content: application/json: example: docsUrl: https://docs.tella.com/ error: unauthorized message: Authentication is required. Provide a valid API key. schema: $ref: '#/components/schemas/ErrorResponse' description: Authentication is required. Provide a valid API key. headers: Deprecation: $ref: '#/components/headers/Deprecation' RateLimit: $ref: '#/components/headers/RateLimit' RateLimit-Policy: $ref: '#/components/headers/RateLimitPolicy' Sunset: $ref: '#/components/headers/Sunset' X-RateLimit-Limit: $ref: '#/components/headers/XRateLimitLimit' X-RateLimit-Remaining: $ref: '#/components/headers/XRateLimitRemaining' X-RateLimit-Reset: $ref: '#/components/headers/XRateLimitReset' '403': content: application/json: example: docsUrl: https://docs.tella.com/ error: forbidden message: You don't have permission to access this resource. schema: $ref: '#/components/schemas/ErrorResponse' description: You don't have permission to access this resource. headers: Deprecation: $ref: '#/components/headers/Deprecation' RateLimit: $ref: '#/components/headers/RateLimit' RateLimit-Policy: $ref: '#/components/headers/RateLimitPolicy' Sunset: $ref: '#/components/headers/Sunset' X-RateLimit-Limit: $ref: '#/components/headers/XRateLimitLimit' X-RateLimit-Remaining: $ref: '#/components/headers/XRateLimitRemaining' X-RateLimit-Reset: $ref: '#/components/headers/XRateLimitReset' '404': content: application/json: example: docsUrl: https://docs.tella.com/ error: not_found message: The requested resource was not found. schema: $ref: '#/components/schemas/ErrorResponse' description: The requested resource was not found. headers: Deprecation: $ref: '#/components/headers/Deprecation' RateLimit: $ref: '#/components/headers/RateLimit' RateLimit-Policy: $ref: '#/components/headers/RateLimitPolicy' Sunset: $ref: '#/components/headers/Sunset' X-RateLimit-Limit: $ref: '#/components/headers/XRateLimitLimit' X-RateLimit-Remaining: $ref: '#/components/headers/XRateLimitRemaining' X-RateLimit-Reset: $ref: '#/components/headers/XRateLimitReset' '409': content: application/json: example: docsUrl: https://docs.tella.com/ error: conflict message: >- The request conflicts with the resource's current state, e.g. an Idempotency-Key whose first request is still in progress. Retry once it settles. schema: $ref: '#/components/schemas/ErrorResponse' description: >- The request conflicts with the resource's current state, e.g. an Idempotency-Key whose first request is still in progress. Retry once it settles. headers: Deprecation: $ref: '#/components/headers/Deprecation' RateLimit: $ref: '#/components/headers/RateLimit' RateLimit-Policy: $ref: '#/components/headers/RateLimitPolicy' Sunset: $ref: '#/components/headers/Sunset' X-RateLimit-Limit: $ref: '#/components/headers/XRateLimitLimit' X-RateLimit-Remaining: $ref: '#/components/headers/XRateLimitRemaining' X-RateLimit-Reset: $ref: '#/components/headers/XRateLimitReset' '429': content: application/json: example: docsUrl: https://docs.tella.com/ error: rate_limited message: You have exceeded the rate limit. Please slow down. schema: $ref: '#/components/schemas/ErrorResponse' description: You have exceeded the rate limit. Please slow down. headers: Deprecation: $ref: '#/components/headers/Deprecation' RateLimit: $ref: '#/components/headers/RateLimit' RateLimit-Policy: $ref: '#/components/headers/RateLimitPolicy' Retry-After: $ref: '#/components/headers/RetryAfter' Sunset: $ref: '#/components/headers/Sunset' X-RateLimit-Limit: $ref: '#/components/headers/XRateLimitLimit' X-RateLimit-Remaining: $ref: '#/components/headers/XRateLimitRemaining' X-RateLimit-Reset: $ref: '#/components/headers/XRateLimitReset' '500': content: application/json: example: docsUrl: https://docs.tella.com/ error: server_error message: An unexpected error occurred schema: $ref: '#/components/schemas/ErrorResponse' description: An unexpected error occurred headers: Deprecation: $ref: '#/components/headers/Deprecation' RateLimit: $ref: '#/components/headers/RateLimit' RateLimit-Policy: $ref: '#/components/headers/RateLimitPolicy' Sunset: $ref: '#/components/headers/Sunset' X-RateLimit-Limit: $ref: '#/components/headers/XRateLimitLimit' X-RateLimit-Remaining: $ref: '#/components/headers/XRateLimitRemaining' X-RateLimit-Reset: $ref: '#/components/headers/XRateLimitReset' '501': content: application/json: example: docsUrl: https://docs.tella.com/ error: not_implemented message: The requested operation is not implemented. schema: $ref: '#/components/schemas/ErrorResponse' description: The requested operation is not implemented. headers: Deprecation: $ref: '#/components/headers/Deprecation' RateLimit: $ref: '#/components/headers/RateLimit' RateLimit-Policy: $ref: '#/components/headers/RateLimitPolicy' Sunset: $ref: '#/components/headers/Sunset' X-RateLimit-Limit: $ref: '#/components/headers/XRateLimitLimit' X-RateLimit-Remaining: $ref: '#/components/headers/XRateLimitRemaining' X-RateLimit-Reset: $ref: '#/components/headers/XRateLimitReset' '503': content: application/json: example: docsUrl: https://docs.tella.com/ error: unavailable message: >- A dependency was unavailable and the request was not executed. Safe to resend unchanged after the Retry-After delay. schema: $ref: '#/components/schemas/ErrorResponse' description: >- A dependency was unavailable and the request was not executed. Safe to resend unchanged after the Retry-After delay. headers: Deprecation: $ref: '#/components/headers/Deprecation' RateLimit: $ref: '#/components/headers/RateLimit' RateLimit-Policy: $ref: '#/components/headers/RateLimitPolicy' Sunset: $ref: '#/components/headers/Sunset' X-RateLimit-Limit: $ref: '#/components/headers/XRateLimitLimit' X-RateLimit-Remaining: $ref: '#/components/headers/XRateLimitRemaining' X-RateLimit-Reset: $ref: '#/components/headers/XRateLimitReset' security: - BearerAuth: [] components: schemas: SubtitlePreset: additionalProperties: false properties: captionStyle: $ref: '#/components/schemas/CaptionStyle' name: type: string presetId: description: Pass this ID to PUT /v1/videos/{id}/subtitle-preset example: default:spotlight type: string scope: enum: - default - personal type: string required: - presetId - name - scope - captionStyle type: object ErrorResponse: additionalProperties: false description: Standard error response format properties: docsUrl: description: Link to Tella API documentation example: https://docs.tella.com/ format: uri type: string error: description: Machine-readable error code enum: - bad_request - unauthorized - forbidden - not_found - rate_limited - server_error - conflict - not_implemented - unavailable example: not_found type: string message: description: Human-readable error message example: Resource not found type: string required: - error - message - docsUrl type: object CaptionStyle: description: >- Subtitle style. Applies if subtitles are enabled on the video. Background, shadow, and outline colors and toggles are available on every style. discriminator: mapping: backdrop: $ref: '#/components/schemas/BackdropCaptionStyle' cannes: $ref: '#/components/schemas/CannesCaptionStyle' classic: $ref: '#/components/schemas/ClassicCaptionStyle' highlight: $ref: '#/components/schemas/HighlightCaptionStyle' mono: $ref: '#/components/schemas/MonoCaptionStyle' propertyName: name oneOf: - $ref: '#/components/schemas/BackdropCaptionStyle' - $ref: '#/components/schemas/HighlightCaptionStyle' - $ref: '#/components/schemas/MonoCaptionStyle' - $ref: '#/components/schemas/CannesCaptionStyle' - $ref: '#/components/schemas/ClassicCaptionStyle' type: object BackdropCaptionStyle: additionalProperties: false properties: activeWordTextColor: description: >- Text color of the spoken word when highlightMode is background. Defaults to textColor. example: '#5E51F8FF' pattern: ^#(?:[0-9A-Fa-f]{6}|[0-9A-Fa-f]{8})$ type: string backgroundColor: description: >- Caption background color in #RRGGBB or #RRGGBBAA form. Its alpha channel is rendered exactly; #RRGGBB is fully opaque. Responses use uppercase #RRGGBBAA and report the effective rendered color. example: '#5E51F8FF' pattern: ^#(?:[0-9A-Fa-f]{6}|[0-9A-Fa-f]{8})$ type: string backgroundEnabled: type: boolean highlightColor: description: >- Spoken-word color. Omit to retain the legacy text-opacity progression. example: '#5E51F8FF' pattern: ^#(?:[0-9A-Fa-f]{6}|[0-9A-Fa-f]{8})$ type: string highlightMode: description: How the spoken word is emphasized. Defaults to text. enum: - text - background - fadeRest type: string name: enum: - backdrop type: string outlineColor: description: >- Hex color in #RRGGBB or #RRGGBBAA form. Responses use uppercase #RRGGBBAA. example: '#5E51F8FF' pattern: ^#(?:[0-9A-Fa-f]{6}|[0-9A-Fa-f]{8})$ type: string outlineEnabled: type: boolean shadowColor: description: >- Hex color in #RRGGBB or #RRGGBBAA form. Responses use uppercase #RRGGBBAA. example: '#5E51F8FF' pattern: ^#(?:[0-9A-Fa-f]{6}|[0-9A-Fa-f]{8})$ type: string shadowEnabled: type: boolean textCase: description: Letter case applied to every caption word. Defaults to original. enum: - original - uppercase - lowercase type: string textColor: description: >- Hex color in #RRGGBB or #RRGGBBAA form. Responses use uppercase #RRGGBBAA. example: '#5E51F8FF' pattern: ^#(?:[0-9A-Fa-f]{6}|[0-9A-Fa-f]{8})$ type: string wordLevelHighlights: type: boolean required: - backgroundColor - name - textColor - wordLevelHighlights title: Backdrop type: object CannesCaptionStyle: additionalProperties: false properties: activeWordTextColor: description: >- Text color of the spoken word when highlightMode is background. Defaults to textColor. example: '#5E51F8FF' pattern: ^#(?:[0-9A-Fa-f]{6}|[0-9A-Fa-f]{8})$ type: string backgroundColor: description: >- Caption background color in #RRGGBB or #RRGGBBAA form. Its alpha channel is rendered exactly; #RRGGBB is fully opaque. Responses use uppercase #RRGGBBAA and report the effective rendered color. example: '#5E51F8FF' pattern: ^#(?:[0-9A-Fa-f]{6}|[0-9A-Fa-f]{8})$ type: string backgroundEnabled: type: boolean highlightColor: description: Spoken-word color. Defaults to textColor. example: '#5E51F8FF' pattern: ^#(?:[0-9A-Fa-f]{6}|[0-9A-Fa-f]{8})$ type: string highlightMode: description: How the spoken word is emphasized. Defaults to text. enum: - text - background - fadeRest type: string name: enum: - cannes type: string outlineColor: description: >- Hex color in #RRGGBB or #RRGGBBAA form. Responses use uppercase #RRGGBBAA. example: '#5E51F8FF' pattern: ^#(?:[0-9A-Fa-f]{6}|[0-9A-Fa-f]{8})$ type: string outlineEnabled: type: boolean shadowColor: description: >- Hex color in #RRGGBB or #RRGGBBAA form. Responses use uppercase #RRGGBBAA. example: '#5E51F8FF' pattern: ^#(?:[0-9A-Fa-f]{6}|[0-9A-Fa-f]{8})$ type: string shadowEnabled: type: boolean textCase: description: Letter case applied to every caption word. Defaults to original. enum: - original - uppercase - lowercase type: string textColor: description: >- Hex color in #RRGGBB or #RRGGBBAA form. Responses use uppercase #RRGGBBAA. example: '#5E51F8FF' pattern: ^#(?:[0-9A-Fa-f]{6}|[0-9A-Fa-f]{8})$ type: string wordLevelHighlights: description: Highlight each word as it is spoken. Defaults to false. type: boolean required: - shadowColor - name - textColor title: Cannes type: object ClassicCaptionStyle: additionalProperties: false properties: activeWordTextColor: description: >- Text color of the spoken word when highlightMode is background. Defaults to textColor. example: '#5E51F8FF' pattern: ^#(?:[0-9A-Fa-f]{6}|[0-9A-Fa-f]{8})$ type: string backgroundColor: description: >- Caption background color in #RRGGBB or #RRGGBBAA form. Its alpha channel is rendered exactly; #RRGGBB is fully opaque. Responses use uppercase #RRGGBBAA and report the effective rendered color. example: '#5E51F8FF' pattern: ^#(?:[0-9A-Fa-f]{6}|[0-9A-Fa-f]{8})$ type: string backgroundEnabled: type: boolean highlightColor: description: Spoken-word color. Defaults to textColor. example: '#5E51F8FF' pattern: ^#(?:[0-9A-Fa-f]{6}|[0-9A-Fa-f]{8})$ type: string highlightMode: description: How the spoken word is emphasized. Defaults to text. enum: - text - background - fadeRest type: string name: enum: - classic type: string outlineColor: description: >- Hex color in #RRGGBB or #RRGGBBAA form. Responses use uppercase #RRGGBBAA. example: '#5E51F8FF' pattern: ^#(?:[0-9A-Fa-f]{6}|[0-9A-Fa-f]{8})$ type: string outlineEnabled: type: boolean shadowColor: description: >- Hex color in #RRGGBB or #RRGGBBAA form. Responses use uppercase #RRGGBBAA. example: '#5E51F8FF' pattern: ^#(?:[0-9A-Fa-f]{6}|[0-9A-Fa-f]{8})$ type: string shadowEnabled: type: boolean textCase: description: Letter case applied to every caption word. Defaults to original. enum: - original - uppercase - lowercase type: string textColor: description: >- Hex color in #RRGGBB or #RRGGBBAA form. Responses use uppercase #RRGGBBAA. example: '#5E51F8FF' pattern: ^#(?:[0-9A-Fa-f]{6}|[0-9A-Fa-f]{8})$ type: string wordLevelHighlights: description: Highlight each word as it is spoken. Defaults to false. type: boolean required: - outlineColor - name - textColor title: Classic type: object HighlightCaptionStyle: additionalProperties: false properties: backgroundColor: description: >- Caption background color in #RRGGBB or #RRGGBBAA form. Its alpha channel is rendered exactly; #RRGGBB is fully opaque. Responses use uppercase #RRGGBBAA and report the effective rendered color. example: '#5E51F8FF' pattern: ^#(?:[0-9A-Fa-f]{6}|[0-9A-Fa-f]{8})$ type: string backgroundEnabled: type: boolean highlightColor: description: >- Hex color in #RRGGBB or #RRGGBBAA form. Responses use uppercase #RRGGBBAA. example: '#5E51F8FF' pattern: ^#(?:[0-9A-Fa-f]{6}|[0-9A-Fa-f]{8})$ type: string highlightMode: description: How the spoken word is emphasized. Defaults to background. enum: - text - background - fadeRest type: string name: enum: - highlight type: string outlineColor: description: >- Hex color in #RRGGBB or #RRGGBBAA form. Responses use uppercase #RRGGBBAA. example: '#5E51F8FF' pattern: ^#(?:[0-9A-Fa-f]{6}|[0-9A-Fa-f]{8})$ type: string outlineEnabled: type: boolean primaryTextColor: description: >- Hex color in #RRGGBB or #RRGGBBAA form. Responses use uppercase #RRGGBBAA. example: '#5E51F8FF' pattern: ^#(?:[0-9A-Fa-f]{6}|[0-9A-Fa-f]{8})$ type: string secondaryTextColor: description: >- Hex color in #RRGGBB or #RRGGBBAA form. Responses use uppercase #RRGGBBAA. example: '#5E51F8FF' pattern: ^#(?:[0-9A-Fa-f]{6}|[0-9A-Fa-f]{8})$ type: string shadowColor: description: >- Hex color in #RRGGBB or #RRGGBBAA form. Responses use uppercase #RRGGBBAA. example: '#5E51F8FF' pattern: ^#(?:[0-9A-Fa-f]{6}|[0-9A-Fa-f]{8})$ type: string shadowEnabled: type: boolean textCase: description: Letter case applied to every caption word. Defaults to original. enum: - original - uppercase - lowercase type: string wordLevelHighlights: description: Highlight each word as it is spoken. Defaults to true. type: boolean required: - name - primaryTextColor - secondaryTextColor - highlightColor title: Highlight type: object MonoCaptionStyle: additionalProperties: false properties: activeWordTextColor: description: >- Text color of the spoken word when highlightMode is background. Defaults to textColor. example: '#5E51F8FF' pattern: ^#(?:[0-9A-Fa-f]{6}|[0-9A-Fa-f]{8})$ type: string backgroundColor: description: >- Caption background color in #RRGGBB or #RRGGBBAA form. Its alpha channel is rendered exactly; #RRGGBB is fully opaque. Responses use uppercase #RRGGBBAA and report the effective rendered color. example: '#5E51F8FF' pattern: ^#(?:[0-9A-Fa-f]{6}|[0-9A-Fa-f]{8})$ type: string backgroundEnabled: type: boolean highlightColor: description: >- Hex color in #RRGGBB or #RRGGBBAA form. Responses use uppercase #RRGGBBAA. example: '#5E51F8FF' pattern: ^#(?:[0-9A-Fa-f]{6}|[0-9A-Fa-f]{8})$ type: string highlightMode: description: How the spoken word is emphasized. Defaults to text. enum: - text - background - fadeRest type: string name: enum: - mono type: string outlineColor: description: >- Hex color in #RRGGBB or #RRGGBBAA form. Responses use uppercase #RRGGBBAA. example: '#5E51F8FF' pattern: ^#(?:[0-9A-Fa-f]{6}|[0-9A-Fa-f]{8})$ type: string outlineEnabled: type: boolean shadowColor: description: >- Hex color in #RRGGBB or #RRGGBBAA form. Responses use uppercase #RRGGBBAA. example: '#5E51F8FF' pattern: ^#(?:[0-9A-Fa-f]{6}|[0-9A-Fa-f]{8})$ type: string shadowEnabled: type: boolean textCase: description: Letter case applied to every caption word. Defaults to original. enum: - original - uppercase - lowercase type: string textColor: description: >- Hex color in #RRGGBB or #RRGGBBAA form. Responses use uppercase #RRGGBBAA. example: '#5E51F8FF' pattern: ^#(?:[0-9A-Fa-f]{6}|[0-9A-Fa-f]{8})$ type: string wordLevelHighlights: description: Highlight each word as it is spoken. Defaults to true. type: boolean required: - name - textColor - highlightColor title: Mono type: object headers: Deprecation: description: Indicates that an API operation is deprecated, following RFC 9745 example: '@1767225600' schema: type: string RateLimit: description: >- Current quota with remaining requests (`r`) and seconds until reset (`t`) example: '"public-api";r=95;t=42' schema: type: string RateLimitPolicy: description: >- Named quota policy with the request limit (`q`) and window in seconds (`w`) example: '"public-api";q=100;w=60' schema: type: string Sunset: description: >- Indicates when a deprecated API operation will become unavailable, following RFC 8594 example: Tue, 30 Jun 2026 23:59:59 GMT schema: type: string XRateLimitLimit: description: Maximum requests allowed in the current window example: 100 schema: type: integer XRateLimitRemaining: description: Requests remaining in the current window example: 95 schema: type: integer XRateLimitReset: description: Unix timestamp in milliseconds when the window resets example: 1704067200000 schema: format: int64 type: integer RetryAfter: description: Seconds to wait before retrying a rate-limited request example: 45 schema: minimum: 1 type: integer securitySchemes: BearerAuth: description: API key obtained from your Tella account settings scheme: bearer type: http ```` ## Related topics - [Videos](/docs/mcp-tools/videos.md) - [List subtitle presets](/docs/api-reference/videos/list-subtitle-presets.md) - [Style subtitles](/docs/help/editing/style-subtitles.md) - [Product Changelog](/docs/changelog.md) - [Layouts](/docs/help/editing/use-layouts.md)