> ## Documentation Index > Fetch the complete documentation index at: https://docs.modellix.ai/llms.txt > Use this file to discover all available pages before exploring further. # Vidu Q3 Turbo FL2V > [Core Function] Vidu Q3 Turbo FL2V is a fast First-Last frame transition video model. [Strengths] It excels at rapidly generating a smooth video transition bridging a specific starting image and an ending image. [Best For] Highly recommended for: quick visual morphs, before-and-after transitions, time-lapse simulations, and rapid storyboard filling. [Limitations] Do NOT use this model with only a single image; both a start and end frame are strictly required. Do NOT use if you need the highest possible cinematic detail. [Routing] Use this when the user provides exactly two images and wants a fast transition between them. For higher quality transitions, use Q3 Pro FL2V. ## OpenAPI ````yaml /model-api/vidu/vidu-i2v.json post /vidu/viduq3-turbo-fl2v openapi: 3.1.0 info: description: >- The image-to-video models API from Vidu. Includes standard I2V, first-last frame, reference-to-video, digital human, multi-frame animation, template story, and one-click film/ad generation. version: 1.0.0 contact: name: Modellix Support email: support@modellix.ai title: Vidu Image-to-Video Models API servers: - url: https://api.modellix.ai/api/v1 description: The image-to-video models API from Vidu. security: - bearerAuth: [] paths: /vidu/viduq3-turbo-fl2v: post: summary: Vidu Q3 Turbo FL2V description: >- [Core Function] Vidu Q3 Turbo FL2V is a fast First-Last frame transition video model. [Strengths] It excels at rapidly generating a smooth video transition bridging a specific starting image and an ending image. [Best For] Highly recommended for: quick visual morphs, before-and-after transitions, time-lapse simulations, and rapid storyboard filling. [Limitations] Do NOT use this model with only a single image; both a start and end frame are strictly required. Do NOT use if you need the highest possible cinematic detail. [Routing] Use this when the user provides exactly two images and wants a fast transition between them. For higher quality transitions, use Q3 Pro FL2V. operationId: viduQ3TurboFL2VAsync requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/ViduQ3FL2VRequest' examples: basic: summary: Two frames only value: first_frame_image: https://example.com/sunrise.jpg last_frame_image: https://example.com/sunset.jpg with_prompt: summary: With transition description value: first_frame_image: https://example.com/closed-flower.jpg last_frame_image: https://example.com/open-flower.jpg prompt: >- A flower slowly blooms, petals unfurling in the warm morning light full_options: summary: Full options value: first_frame_image: https://example.com/day-skyline.jpg last_frame_image: https://example.com/night-skyline.jpg prompt: >- City transitions from golden afternoon light to sparkling evening illumination duration: 8 resolution: 1080p seed: 2468 responses: '200': description: Task submitted successfully content: application/json: schema: $ref: '#/components/schemas/AsyncTaskResponse' example: code: 0 message: success data: status: pending task_id: task-vidu-fl2v-001 model_id: vidu/viduq3-turbo-fl2v get_result: method: GET url: https://api.modellix.ai/api/v1/tasks/task-vidu-fl2v-001 '400': $ref: '#/components/responses/BadRequest' '401': $ref: '#/components/responses/Unauthorized' '429': $ref: '#/components/responses/TooManyRequests' '500': $ref: '#/components/responses/InternalServerError' components: schemas: ViduQ3FL2VRequest: type: object required: - first_frame_image - last_frame_image description: >- Vidu Q3 first-last frame to video request. The model animates a seamless transition from `first_frame_image` to `last_frame_image`. Both images are required. properties: prompt: type: string minLength: 1 maxLength: 5000 description: Description of the transition between the two frames example: A flower slowly blooms, petals unfurling in the warm morning light first_frame_image: type: string minLength: 1 description: >- Opening frame of the video (the scene that the animation starts from). Accepts a URL or base64 data URI. example: https://example.com/sunrise.jpg last_frame_image: type: string minLength: 1 description: >- Closing frame of the video (the scene that the animation ends at). Accepts a URL or base64 data URI. example: https://example.com/sunset.jpg duration: type: integer minimum: 1 maximum: 16 default: 5 description: Video duration in seconds example: 8 resolution: type: string enum: - 540p - 720p - 1080p default: 720p description: Video resolution example: 1080p seed: type: integer description: Random seed for reproducibility example: 2468 AsyncTaskResponse: type: object required: - code - message - data properties: code: type: integer description: Response code, 0 indicates success example: 0 message: type: string description: Response message example: success data: type: object required: - status - task_id - model_id properties: status: type: string enum: - pending - processing description: Task status example: pending task_id: type: string description: Unique task identifier for polling example: task-abc123 model_id: type: string description: Model ID in `provider/model` format example: vidu/viduq3-pro-fast-i2v get_result: type: object description: API information to query the task result properties: method: type: string example: GET url: type: string example: https://api.modellix.ai/api/v1/tasks/task-abc123 description: Detailed data about the submitted asynchronous task. ErrorResponse: type: object required: - code - message properties: code: type: integer example: 400 message: type: string example: 'Invalid parameters: parameter ''first_frame_image'' is required' responses: BadRequest: description: Invalid request parameters content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: code: 400 message: 'Invalid parameters: parameter ''first_frame_image'' is required' Unauthorized: description: Unauthorized - Invalid or missing API Key content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: code: 401 message: 'Authentication failed: invalid API key' TooManyRequests: description: Too many requests - Rate limit exceeded headers: X-RateLimit-Limit: description: Maximum requests per minute schema: type: integer example: 100 X-RateLimit-Remaining: description: Remaining quota in current window schema: type: integer example: 0 X-RateLimit-Reset: description: Rate limit window reset time (Unix timestamp) schema: type: integer example: 1704067260 content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: code: 429 message: >- Rate limit exceeded: 100 requests per minute, retry after 60 seconds InternalServerError: description: Internal server error content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: code: 500 message: Internal server error securitySchemes: bearerAuth: type: http scheme: bearer description: 'API Key authentication. Format: `Bearer YOUR_API_KEY`.' ````