> ## Documentation Index > Fetch the complete documentation index at: https://evolink.ai/docs/llms.txt > Use this file to discover all available pages before exploring further. # Gemini Omni 1.1 Flash Full Parameter Overview > - Full parameter reference for all five Gemini Omni 1.1 Flash video modes - Five modes are available: text-to-video, image-to-video, reference-to-video, video edit, and video extend. - `quality`: Text/Image/Reference support four tiers and default to 720p. Edit/Extend also support auto and default to auto. - `duration`: Generation modes use integer 3-10 (default 3); Edit only accepts auto; Extend uses integer 3-10 as appended seconds. - `aspect_ratio`: Default is auto. Generation modes also support 16:9 and 9:16; Edit and Extend only accept auto. - The model generates synchronized native audio automatically. - Write negative requirements directly in prompt. - Asynchronous processing: [query task status](/en/api-manual/task-management/get-task-detail) - Generated links remain valid for 24 hours; save them promptly. ## OpenAPI ````yaml en/api-manual/video-series/gemini-omni-1.1-flash/gemini-omni-1.1-flash-overview.json POST /v1/videos/generations openapi: 3.1.0 info: title: Gemini Omni 1.1 Flash Full Parameter Overview description: Full parameter reference for all five Gemini Omni 1.1 Flash video modes license: name: MIT version: 1.0.0 servers: - url: https://api.evolink.ai description: Production environment security: - bearerAuth: [] paths: /v1/videos/generations: post: tags: - Video Generation summary: Gemini Omni 1.1 Flash Full Parameter Overview description: >- - Full parameter reference for all five Gemini Omni 1.1 Flash video modes - Five modes are available: text-to-video, image-to-video, reference-to-video, video edit, and video extend. - `quality`: Text/Image/Reference support four tiers and default to 720p. Edit/Extend also support auto and default to auto. - `duration`: Generation modes use integer 3-10 (default 3); Edit only accepts auto; Extend uses integer 3-10 as appended seconds. - `aspect_ratio`: Default is auto. Generation modes also support 16:9 and 9:16; Edit and Extend only accept auto. - The model generates synchronized native audio automatically. - Write negative requirements directly in prompt. - Asynchronous processing: [query task status](/en/api-manual/task-management/get-task-detail) - Generated links remain valid for 24 hours; save them promptly. operationId: createGeminiOmni11FlashGeneration requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/GeminiOmni11FlashRequest' examples: text_to_video: summary: Text-to-video value: model: gemini-omni-1.1-flash-text-to-video prompt: >- A glass marble rolls down a wooden track and splashes into water. quality: 720p duration: 3 aspect_ratio: '16:9' image_to_video: summary: First-and-last-frame image-to-video value: model: gemini-omni-1.1-flash-image-to-video prompt: The subject slowly turns and smiles. image_urls: - https://example.com/first-frame.png - https://example.com/last-frame.png quality: 720p duration: 3 aspect_ratio: '16:9' reference_to_video: summary: Reference-to-video value: model: gemini-omni-1.1-flash-reference-to-video prompt: >- Keep the character appearance and camera motion from the references. image_urls: - https://example.com/character.png video_urls: - https://example.com/reference.mp4 quality: 720p duration: 3 aspect_ratio: '16:9' video_edit: summary: Video edit value: model: gemini-omni-1.1-flash-video-edit prompt: >- Make the lighting warmer while keeping everything else unchanged. video_urls: - https://example.com/source.mp4 quality: auto duration: auto aspect_ratio: auto video_extend: summary: Video extend value: model: gemini-omni-1.1-flash-video-extend prompt: The person keeps walking and slowly exits the frame. video_urls: - https://example.com/source.mp4 duration: 3 quality: auto aspect_ratio: auto responses: '200': description: Video task created successfully content: application/json: schema: $ref: '#/components/schemas/VideoGenerationResponse' '400': description: Invalid request parameters content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: error: code: invalid_request message: Invalid request parameters type: invalid_request_error '401': description: Not authenticated, token invalid or expired content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: error: code: unauthorized message: Invalid or expired token type: authentication_error '402': description: Insufficient quota, top-up required content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: error: code: insufficient_quota message: Insufficient quota. Please top up your account. type: insufficient_quota '403': description: Access denied content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: error: code: model_access_denied message: >- Token does not have access to model: gemini-omni-1.1-flash-text-to-video type: invalid_request_error '429': description: Rate limit exceeded content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: error: code: rate_limit_exceeded message: Too many requests, please try again later type: rate_limit_error '500': description: Internal server error content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: error: code: internal_error message: Internal server error type: api_error components: schemas: GeminiOmni11FlashRequest: type: object required: - model - prompt additionalProperties: false properties: model: type: string description: |- Choose the model ID that matches the task and input media: - `gemini-omni-1.1-flash-text-to-video` - `gemini-omni-1.1-flash-image-to-video` - `gemini-omni-1.1-flash-reference-to-video` - `gemini-omni-1.1-flash-video-edit` - `gemini-omni-1.1-flash-video-extend` enum: - gemini-omni-1.1-flash-text-to-video - gemini-omni-1.1-flash-image-to-video - gemini-omni-1.1-flash-reference-to-video - gemini-omni-1.1-flash-video-edit - gemini-omni-1.1-flash-video-extend example: gemini-omni-1.1-flash-text-to-video prompt: type: string description: Text prompt describing the generation, edit, or extension goal. example: A glass marble rolls down a wooden track and splashes into water. image_urls: type: array items: type: string format: uri minItems: 1 maxItems: 10 description: >- Image URLs: Image-to-Video requires 1-2 first/last-frame images; Reference-to-Video requires up to 10 images; Video Edit and Video Extend accept up to 10 optional reference images. example: - https://example.com/character.png - https://example.com/scene.png video_urls: type: array items: type: string format: uri minItems: 1 maxItems: 3 description: >- Video URLs: Reference-to-Video accepts up to 3 clips of up to 10 seconds; Video Edit requires one clip up to 10 seconds; Video Extend requires one clip up to 30 seconds. example: - https://example.com/reference.mp4 quality: type: string description: >- Video resolution **Supported values:** - `360p`: landscape 640×360 / portrait 360×640 - `720p`: landscape 1280×720 / portrait 720×1280 - `1080p`: landscape 1920×1080 / portrait 1080×1920 - `4k`: landscape 3840×2160 / portrait 2160×3840 - `auto`: supported only by Video Edit and Video Extend; follows the input video's resolution **Defaults:** - Text-to-Video, Image-to-Video, and Reference-to-Video: `720p` - Video Edit and Video Extend: `auto` **Billing:** Video output is billed by output tokens. For Video Edit and Video Extend, input and output video tokens are both calculated using the final output resolution. enum: - 360p - 720p - 1080p - 4k - auto example: 720p duration: description: >- Video duration - Text-to-Video, Image-to-Video, and Reference-to-Video: integer from `3` to `10` seconds; default `3` - Video Edit: only `auto` is accepted; default `auto`; output duration follows the input video - Video Extend: integer from `3` to `10` seconds; default `3`; specifies the number of appended seconds oneOf: - type: integer minimum: 3 maximum: 10 - type: string enum: - auto example: 3 aspect_ratio: type: string description: >- Default is auto. Generation modes also support 16:9 and 9:16; Edit and Extend only accept auto. enum: - '16:9' - '9:16' - auto default: auto example: auto callback_url: type: string description: >- HTTPS callback URL to notify when the task completes **Callback timing:** - Triggered when the task completes (completed), fails (failed), or is cancelled (cancelled) - Sent after billing is confirmed **Security restrictions:** - HTTPS protocol only - Callbacks to internal IP addresses are forbidden (127.0.0.1, 10.x.x.x, 172.16-31.x.x, 192.168.x.x, etc.) - URL length must not exceed `2048` characters **Callback mechanism:** - Timeout: `10` seconds - Up to `3` retries on failure (retried `1`s / `2`s / `4`s after each failure respectively) - The callback body format matches the response of the task query endpoint - A 2xx status code from the callback URL is treated as success; other status codes trigger a retry format: uri example: https://your-domain.com/webhooks/video-task-completed allOf: - if: properties: model: const: gemini-omni-1.1-flash-text-to-video required: - model then: properties: duration: type: integer default: 3 quality: enum: - 360p - 720p - 1080p - 4k default: 720p not: anyOf: - required: - image_urls - required: - video_urls - if: properties: model: const: gemini-omni-1.1-flash-image-to-video required: - model then: required: - image_urls properties: image_urls: maxItems: 2 duration: type: integer default: 3 quality: enum: - 360p - 720p - 1080p - 4k default: 720p not: anyOf: - required: - video_urls - if: properties: model: const: gemini-omni-1.1-flash-reference-to-video required: - model then: required: - image_urls properties: video_urls: maxItems: 3 duration: type: integer default: 3 quality: enum: - 360p - 720p - 1080p - 4k default: 720p - if: properties: model: const: gemini-omni-1.1-flash-video-edit required: - model then: required: - video_urls properties: video_urls: maxItems: 1 image_urls: maxItems: 10 duration: type: string enum: - auto default: auto aspect_ratio: enum: - auto quality: enum: - 360p - 720p - 1080p - 4k - auto default: auto - if: properties: model: const: gemini-omni-1.1-flash-video-extend required: - model then: required: - video_urls properties: video_urls: maxItems: 1 image_urls: maxItems: 10 duration: type: integer default: 3 aspect_ratio: enum: - auto quality: enum: - 360p - 720p - 1080p - 4k - auto default: auto VideoGenerationResponse: type: object properties: created: type: integer description: Task creation timestamp example: 1757169743 id: type: string description: Task ID example: task-unified-1757169743-7cvnl5zw model: type: string description: The model name actually used example: gemini-omni-1.1-flash-text-to-video object: type: string enum: - video.generation.task description: The specific type of the task progress: type: integer description: Task progress percentage (0-100) minimum: 0 maximum: 100 example: 0 status: type: string description: Task status. The create endpoint returns processing. enum: - pending - processing - completed - failed example: processing task_info: $ref: '#/components/schemas/VideoTaskInfo' description: Detailed video task information type: type: string enum: - text - image - audio - video description: The output type of the task example: video usage: $ref: '#/components/schemas/Usage' description: Usage and billing information ErrorResponse: type: object properties: error: type: object properties: code: type: string description: Error code identifier message: type: string description: Error description message type: type: string description: Error type VideoTaskInfo: type: object properties: can_cancel: type: boolean description: Whether the task can be cancelled example: false estimated_time: type: integer description: Estimated completion time (seconds) minimum: 0 example: 60 video_duration: type: integer description: Output duration according to the selected mode. example: 3 Usage: type: object description: Usage and billing information properties: billing_rule: type: string description: Billing rule enum: - per_call - per_token - per_second example: per_token credits_reserved: type: number description: Estimated credits to be consumed minimum: 0 example: 102.34 user_group: type: string description: Billing group the user belongs to example: default securitySchemes: bearerAuth: type: http scheme: bearer description: >- ##All endpoints require authentication using a Bearer Token## **Get your API Key:** Visit the [API Key management page](https://evolink.ai/dashboard/keys) to obtain your API Key **Add it to the request header:** ``` Authorization: Bearer YOUR_API_KEY ``` ````