{ "openapi": "3.1.0", "info": { "title": "Runware API - Ovi", "summary": "Unified text to video with synchronized cinematic audio", "description": "Ovi is a unified audio video diffusion model that treats sound and visuals as one generative process. It uses twin DiT backbones with blockwise cross modal fusion to create synchronized speech, effects, and motion from text prompts or text plus image inputs in a single pass.", "version": "1.0.0", "x-model-id": "ovi", "x-air-id": "runware:190@1", "x-status": "live", "x-capabilities": [ "text-to-video", "text-to-audio", "image-to-video", "audio-to-audio" ], "x-released-at": "2025-09-30T00:00:00Z", "x-cover-image": "https://assets.runware.ai/22e15fcf-4e53-45ec-a9d3-9d6e8c627f56.jpg" }, "servers": [ { "url": "https://api.runware.ai/v1", "description": "Runware REST API" } ], "components": { "securitySchemes": { "apiKeyAuth": { "type": "http", "scheme": "bearer", "description": "Runware API Key (e.g., Bearer )" } }, "schemas": { "AuthenticationTask": { "title": "Authentication", "description": "Authenticates a connection using an API key. Can be sent as the first element of the request array as an alternative to using the Authorization header.", "type": "object", "x-response-schema": "https://schemas.runware.ai/responses/utilities/authentication.json", "properties": { "taskType": { "const": "authentication", "title": "Task Type", "description": "The type of task to perform." }, "apiKey": { "title": "API Key", "description": "Your Runware API key.", "type": "string" }, "connectionSessionUUID": { "title": "Connection Session UUID", "description": "Optional session UUID to resume a previous connection and receive any buffered results.", "type": "string", "format": "uuid" } }, "required": [ "taskType", "apiKey" ], "additionalProperties": false }, "RequestBody": { "type": "array", "items": { "type": "object", "properties": { "model": { "title": "Model", "description": "Identifier of the model to use for generation.", "type": "string", "const": "runware:190@1" }, "inputs": { "title": "Inputs", "description": "The unified payload wrapper for complex media assets dictating image, video or audio inference constraints.", "type": "object", "properties": { "image": { "title": "Image", "description": "Image input (UUID, URL, Data URI, or Base64).", "type": "string", "anyOf": [ { "format": "uuid" }, { "format": "uri" }, { "pattern": "^data:image\\/[a-zA-Z]+;base64,[a-zA-Z0-9+/=]+$" }, { "pattern": "^[a-zA-Z0-9+/=]+$" } ] } }, "required": [ "image" ], "additionalProperties": false }, "positivePrompt": { "title": "Positive Prompt", "description": "Text prompt describing elements to include in the generated output.", "type": "string" }, "fps": { "title": "FPS", "description": "Frames per second for video generation. Higher values create smoother motion but require more processing time.", "type": "integer", "default": 24, "maximum": 120 }, "seed": { "title": "Seed", "description": "Random seed for reproducible generation. When not provided, a random seed is generated in the unsigned 32-bit range.", "type": "integer", "minimum": 0, "maximum": 9223372036854776000 }, "steps": { "title": "Steps", "description": "Total number of denoising steps. Higher values generally produce more detailed results but take longer.", "type": "integer", "minimum": 1, "default": 30, "maximum": 100 }, "acceleratorOptions": { "title": "Accelerator Options", "description": "Advanced caching mechanisms to speed up generation.", "type": "object", "properties": { "cacheEndStep": { "title": "Cache End Step", "description": "Absolute step number to end caching. Must be greater than `cacheStartStep` and less than or equal to `steps`.", "type": "integer", "minimum": 1 }, "cacheEndStepPercentage": { "title": "Cache End Step Percentage", "description": "Percentage of steps to end caching. Alternative to `cacheEndStep`. Must be greater than `cacheStartStepPercentage`.", "type": "integer", "minimum": 1, "maximum": 100 }, "cacheMaxConsecutiveSteps": { "title": "Cache Max Consecutive Steps", "description": "Limits the maximum number of consecutive steps that can use cached computations before forcing a fresh computation.", "type": "integer", "minimum": 1, "maximum": 5, "default": 3 }, "cacheStartStep": { "title": "Cache Start Step", "description": "Absolute step number to start caching. Must be less than `cacheEndStep`.", "type": "integer", "minimum": 0 }, "cacheStartStepPercentage": { "title": "Cache Start Step Percentage", "description": "Percentage of steps to start caching. Alternative to `cacheStartStep`. Must be less than `cacheEndStepPercentage`.", "type": "integer", "minimum": 0, "maximum": 99 }, "teaCache": { "title": "TeaCache", "description": "TeaCache acceleration for transformer-based models. Estimates step differences to skip redundant computations.", "type": "boolean", "default": false }, "teaCacheDistance": { "title": "TeaCache Distance", "description": "Controls the aggressiveness of the TeaCache feature. Lower values prioritize quality, higher values prioritize speed.", "type": "number", "multipleOf": 0.01, "minimum": 0, "maximum": 1, "default": 0.5 } }, "allOf": [ { "not": { "required": [ "cacheStartStep", "cacheStartStepPercentage" ] } }, { "not": { "required": [ "cacheEndStep", "cacheEndStepPercentage" ] } } ], "additionalProperties": false }, "advancedFeatures": { "title": "Advanced Features", "description": "Model-specific advanced configuration options.", "type": "object", "properties": { "audioCFGScale": { "title": "Audio CFG Scale", "description": "Classifier-free guidance scale for the audio diffusion process. Higher values increase adherence to the text prompt.", "type": "number", "minimum": 0, "maximum": 10, "default": 4 }, "audioNegativePrompt": { "title": "Audio Negative Prompt", "description": "Text describing elements to avoid in the generated audio.", "type": "string" }, "slgLayer": { "title": "SLG Layer", "description": "Skip-layer guidance layer index. Set to null to disable.", "type": "integer", "minimum": 0, "maximum": 30 }, "videoCFGScale": { "title": "Video CFG Scale", "description": "Classifier-free guidance scale for the video diffusion process. Higher values increase adherence to the text prompt.", "type": "number", "minimum": 0, "maximum": 10, "default": 5 }, "videoNegativePrompt": { "title": "Video Negative Prompt", "description": "Text describing elements to avoid in the generated video.", "type": "string" } }, "additionalProperties": false }, "taskType": { "title": "Task Type", "description": "Identifier for the type of task being performed", "type": "string", "const": "videoInference" }, "taskUUID": { "title": "Task UUID", "description": "UUID v4 identifier for tracking tasks and matching async responses. Must be unique per task.", "type": "string", "format": "uuid" }, "webhookURL": { "title": "Webhook URL", "description": "Specifies a webhook URL where JSON responses will be sent via HTTP POST when generation tasks complete. For batch requests with multiple results, each completed item triggers a separate webhook call as it becomes available.", "type": "string", "format": "uri" }, "includeCost": { "title": "Include Cost", "description": "Include task cost in the response.", "type": "boolean", "default": false }, "numberResults": { "title": "Number of Results", "description": "Number of results to generate. Each result uses a different seed, producing variations of the same parameters.", "type": "integer", "minimum": 1, "default": 1, "maximum": 4 }, "uploadEndpoint": { "title": "Upload Endpoint", "description": "Specifies a URL where the generated content will be automatically uploaded using the HTTP PUT method. The raw binary data of the media file is sent directly as the request body. For secure uploads to cloud storage, use presigned URLs that include temporary authentication credentials.\n\n**Common use cases:**\n\n- **Cloud storage**: Upload directly to S3 buckets, Google Cloud Storage, or Azure Blob Storage using presigned URLs.\n- **CDN integration**: Upload to content delivery networks for immediate distribution.\n\n```text\n// S3 presigned URL for secure upload\nhttps://your-bucket.s3.amazonaws.com/generated/content.mp4?X-Amz-Signature=abc123&X-Amz-Expires=3600\n\n// Google Cloud Storage presigned URL\nhttps://storage.googleapis.com/your-bucket/content.jpg?X-Goog-Signature=xyz789\n\n// Custom storage endpoint\nhttps://storage.example.com/uploads/generated-image.jpg\n```\n\nThe content data will be sent as the request body to the specified URL when generation is complete.\n\n[Read full documentation](https://runware.ai/docs/models/ovi#uploadEndpoint)", "type": "string", "format": "uri" }, "ttl": { "title": "TTL", "description": "Time-to-live (TTL) in seconds for generated content. Only applies when `outputType` is `URL`.", "type": "integer", "minimum": 60 }, "outputType": { "title": "Output Type", "description": "Video output type.", "type": "string", "enum": [ "URL" ], "default": "URL" }, "outputFormat": { "title": "Output Format", "description": "Specifies the file format of the generated output. The available values depend on the task type and the specific model's capabilities.\n\n- \\`JPG\\`: Best for photorealistic images with smaller file sizes (no transparency).\n- \\`PNG\\`: Lossless compression, supports high quality and transparency (alpha channel).\n- \\`WEBP\\`: Modern format providing superior compression and transparency support.\n- \\`MP4\\`: Widely supported video container (H.264), recommended for general use.\n- \\`WEBM\\`: Optimized for web delivery.\n- \\`MOV\\`: QuickTime format, common in professional workflows (Apple ecosystem).\n- \\`GIF\\`: Animated image format (no audio), suitable for short loops or previews.\n- \\`MP3\\`: Compressed audio, smaller file size.\n- \\`WAV\\`: Uncompressed, high-quality audio.\n- \\`FLAC\\`: Lossless compression.\n- \\`OGG\\`: Open-source compressed audio format (Vorbis codec).\n- \\`SVG\\`: Scalable Vector Graphics.\n- \\`TIFF\\`: High-quality output supporting layers.\n\n> [!NOTE]\n> \\*\\*Transparency\\*\\*: If you are using features like background removal or LayerDiffuse that require transparency, you must select a format that supports an alpha channel (e.g., \\`PNG\\`, \\`WEBP\\`, \\`TIFF\\`). \\`JPG\\` does not support transparency.\n\n[Read full documentation](https://runware.ai/docs/models/ovi#outputFormat)", "type": "string", "enum": [ "MP4", "WEBM", "MOV" ], "default": "MP4" }, "outputQuality": { "title": "Output Quality", "description": "Compression quality of the output. Higher values preserve quality but increase file size.", "type": "integer", "minimum": 20, "maximum": 99, "default": 95 }, "deliveryMethod": { "title": "Delivery Method", "description": "Determines how the API delivers task results.", "type": "string", "oneOf": [ { "const": "async", "description": "Returns an immediate acknowledgment with the task UUID. Poll for results using getResponse. Required for long-running tasks like video generation." } ], "default": "async" }, "safety": { "type": "object", "title": "Safety Settings", "description": "Content safety checking configuration for video generation.", "properties": { "checkContent": { "title": "Check Content", "description": "Enable or disable content safety checking. When enabled, defaults to `fast` mode.", "type": "boolean", "default": false }, "mode": { "description": "Safety checking mode for video generation.", "type": "string", "oneOf": [ { "const": "none", "title": "None", "description": "Disables checking." }, { "const": "fast", "title": "Fast", "description": "Checks key frames." }, { "const": "full", "title": "Full", "description": "Checks all frames." } ], "default": "none" } }, "additionalProperties": false } }, "required": [ "positivePrompt", "inputs", "taskType", "taskUUID", "model" ], "additionalProperties": false }, "description": "You must always POST an array of task objects." }, "ResponseBody": { "type": "object", "properties": { "data": { "type": "array", "items": { "type": "object", "description": "Unknown response structure" } } } }, "ErrorResponse": { "title": "Error Response", "description": "Standard error response returned by the Runware API.", "type": "object", "properties": { "errors": { "type": "array", "items": { "type": "object", "required": [ "code", "message" ], "additionalProperties": true, "properties": { "code": { "type": "string", "description": "A short identifier for the error (e.g., invalidApiKey, timeoutProvider)." }, "message": { "type": "string", "description": "A human-readable explanation of what went wrong." }, "parameter": { "type": "string", "description": "The request parameter related to the error, if applicable." }, "taskType": { "type": "string", "description": "The task type of the request that failed." }, "taskUUID": { "type": "string", "description": "The unique identifier of the failed request." }, "documentation": { "type": "string", "description": "A link to relevant documentation." } } } } }, "required": [ "errors" ], "additionalProperties": false } } }, "paths": { "/": { "post": { "summary": "Run Ovi", "description": "Ovi is a unified audio video diffusion model that treats sound and visuals as one generative process. It uses twin DiT backbones with blockwise cross modal fusion to create synchronized speech, effects, and motion from text prompts or text plus image inputs in a single pass.", "operationId": "run_ovi", "requestBody": { "required": true, "content": { "application/json": { "schema": { "$ref": "#/components/schemas/RequestBody" } } } }, "responses": { "200": { "description": "Successful response", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/ResponseBody" } } } }, "400": { "description": "Bad Request — Missing or invalid parameters.", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/ErrorResponse" } } } }, "401": { "description": "Unauthorized — No valid API key provided.", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/ErrorResponse" } } } }, "402": { "description": "Payment Required — Insufficient account balance.", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/ErrorResponse" } } } }, "403": { "description": "Forbidden — The API key lacks permissions for this request.", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/ErrorResponse" } } } }, "429": { "description": "Too Many Requests — Rate limit exceeded.", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/ErrorResponse" } } } }, "500": { "description": "Server Error — Something went wrong on Runware's end.", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/ErrorResponse" } } } }, "503": { "description": "Service Unavailable — Temporarily unavailable (maintenance or capacity).", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/ErrorResponse" } } } } } } } }, "security": [ { "apiKeyAuth": [] } ] }