> ## Documentation Index > Fetch the complete documentation index at: https://docs.eversince.ai/llms.txt > Use this file to discover all available pages before exploring further. # render timeline > Export the timeline: video (mp4), a WebM that keeps its transparency (webm: nothing drawn where no clip is, for a graphic placed over footage in another editor), a GIF, or sound alone (mp3, wav). The render is quoted as a range and settled on what the renderer billed. Returns a job; get_jobs carries the item on success, the newest version of this timeline's last render of the same kind. check_timeline reports what a render would show wrong. Cloud processing. ## OpenAPI ````yaml /openapi.json post /tools/render_timeline openapi: 3.1.0 info: title: Eversince API version: '1' description: >- Every Eversince tool as one POST call, plus the routes beside them: the tool list, account and keys, uploads, webhooks and models. The prose is at https://docs.eversince.ai. servers: - url: https://eversince.ai/api/v1 security: - bearer: [] tags: - name: Discovery description: The tool list, the same on the MCP server, the REST API and the CLI. - name: Workspace description: Jobs, balances, settings, templates, skills and the overview. - name: Library description: >- Items, search, import, reading media, comments, boards, calendars, the brand kit and public links. - name: Timeline description: 'Video editing: timelines, clips, captions, sound, language and rendering.' - name: Canvas description: 'Still editing: canvases, slides, layers and rendering.' - name: Generation description: Image, video and audio generation, upscaling, cutouts and models. - name: Research description: 'What platforms publish: pulling and keeping posts.' - name: Account description: Balances, keys, workspaces and script sessions. - name: Uploads description: Files into the library by presigned upload or by URL. - name: Webhooks description: Job results posted to a URL as they complete. - name: Models description: Generation models and cost estimates. paths: /tools/render_timeline: post: tags: - Timeline summary: render timeline description: >- Export the timeline: video (mp4), a WebM that keeps its transparency (webm: nothing drawn where no clip is, for a graphic placed over footage in another editor), a GIF, or sound alone (mp3, wav). The render is quoted as a range and settled on what the renderer billed. Returns a job; get_jobs carries the item on success, the newest version of this timeline's last render of the same kind. check_timeline reports what a render would show wrong. Cloud processing. operationId: render_timeline parameters: - $ref: '#/components/parameters/IdempotencyKey' - $ref: '#/components/parameters/WorkspaceId' requestBody: required: true content: application/json: schema: type: object properties: timeline_id: type: string description: The timeline id. resolution: description: >- Default 1080p. 4k adds detail only where the sources have it and uses more cloud processing. A render is quoted as a range (color and effects on every clip draw several times a plain cut) and charged on what the renderer billed, never above the range; estimate_cost gives it. One export holds about 3 hours at 1080p or 49 minutes at 4k, less with grain; longer is refused with the length it can do. type: string enum: - 1080p - 4k format: description: >- Default mp4. webm keeps the picture's transparency (VP9; the ground is not painted), metered as a video of its size, one pass, so a long cut is refused with the length it can do; the item lands as video tagged transparent. mp3 or wav render the sound alone, metered as a 1080p render; the item lands as audio. gif is silent, about 15 frames a second, at most 720 pixels on the long side and 30 seconds, metered as a 1080p render; the item lands as an image. type: string enum: - mp4 - webm - mp3 - wav - gif folder: description: >- Library folder the finished file lands in, by path ("campaigns/july"), name or id. It has to exist already. Left out, it lands in Timeline renders. type: string idempotency_key: type: string minLength: 1 maxLength: 200 description: >- A key you mint per render (a UUID). The same key on a retry returns the render already dispatched instead of starting a second one; a new render takes a new key. context: description: 'Optional: one sentence shown to the user beside this action.' type: string maxLength: 600 required: - timeline_id - idempotency_key responses: '200': description: >- Done, or a job started for work that runs longer (follow it with get_jobs). content: application/json: schema: type: object required: - ok - data - meta properties: ok: const: true data: type: object additionalProperties: true meta: type: object properties: request_id: type: string cost: $ref: '#/components/schemas/Cost' cloud_processing: $ref: '#/components/schemas/CloudProcessing' media: type: array items: type: object additionalProperties: true default: $ref: '#/components/responses/Error' components: parameters: IdempotencyKey: name: Idempotency-Key in: header required: false schema: type: string description: >- Retry a paid dispatch safely: the same key returns the job already dispatched instead of charging again. WorkspaceId: name: x-workspace-id in: header required: false schema: type: string description: The workspace this one call acts in, when it is not the key's own. schemas: Cost: type: object description: AI credits the call cost. additionalProperties: true CloudProcessing: type: object description: Cloud processing the call used, and what is left. properties: ran_on: const: cloud minutes: type: number queued_minutes: type: number left_minutes: type: number bought_minutes: type: number note: type: string Error: type: object required: - ok - error properties: ok: const: false error: type: object required: - code - message - retryable properties: code: type: string message: type: string description: What went wrong, in words to act on. retryable: type: boolean suggested_action: type: string description: The next step that works. cloud_processing: $ref: '#/components/schemas/CloudProcessing' responses: Error: description: The call was refused or failed. content: application/json: schema: $ref: '#/components/schemas/Error' securitySchemes: bearer: type: http scheme: bearer description: >- An API key (es_live_…) from Settings, under API keys, or an OAuth access token. ````