---
title: Ovi | Runware Docs
url: https://runware.ai/docs/models/ovi
description: Unified text to video with synchronized cinematic audio
---
# Ovi

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.

- **ID**: `runware:190@1`
- **Status**: live
- **Release Date**: September 30, 2025
- **Capabilities**: Text to Video, Text to Audio, Image to Video, Audio to Audio

## Request Parameters

**API Options**

Platform-level options for task execution and delivery.

### [taskType](https://runware.ai/docs/models/ovi#request-tasktype)

- **Type**: `string`
- **Required**: true
- **Value**: `videoInference`

Identifier for the type of task being performed

### [taskUUID](https://runware.ai/docs/models/ovi#request-taskuuid)

- **Type**: `string`
- **Required**: true
- **Format**: `UUID v4`

UUID v4 identifier for tracking tasks and matching async responses. Must be unique per task.

### [outputType](https://runware.ai/docs/models/ovi#request-outputtype)

- **Type**: `string`
- **Default**: `URL`

Video output type.

**Allowed values**: `URL`

### [outputFormat](https://runware.ai/docs/models/ovi#request-outputformat)

- **Type**: `string`
- **Default**: `MP4`

Specifies the file format of the generated output. The available values depend on the task type and the specific model's capabilities.

- \`MP4\`: Widely supported video container (H.264), recommended for general use.
- \`WEBM\`: Optimized for web delivery.
- \`MOV\`: QuickTime format, common in professional workflows (Apple ecosystem).

**Allowed values**: `MP4` `WEBM` `MOV`

### [outputQuality](https://runware.ai/docs/models/ovi#request-outputquality)

- **Type**: `integer`
- **Min**: `20`
- **Max**: `99`
- **Default**: `95`

Compression quality of the output. Higher values preserve quality but increase file size.

### [webhookURL](https://runware.ai/docs/models/ovi#request-webhookurl)

- **Type**: `string`
- **Format**: `URI`

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.

**Learn more** (1 resource):

- [Webhooks](https://runware.ai/docs/platform/webhooks) (platform)

### [deliveryMethod](https://runware.ai/docs/models/ovi#request-deliverymethod)

- **Type**: `string`
- **Default**: `async`

Determines how the API delivers task results.

**Allowed values**:

- `async` Returns an immediate acknowledgment with the task UUID. Poll for results using getResponse. Required for long-running tasks like video generation.

**Learn more** (1 resource):

- [Task Polling](https://runware.ai/docs/platform/task-polling) (platform)

### [uploadEndpoint](https://runware.ai/docs/models/ovi#request-uploadendpoint)

- **Type**: `string`
- **Format**: `URI`

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.

**Common use cases:**

- **Cloud storage**: Upload directly to S3 buckets, Google Cloud Storage, or Azure Blob Storage using presigned URLs.
- **CDN integration**: Upload to content delivery networks for immediate distribution.

```text
// S3 presigned URL for secure upload
https://your-bucket.s3.amazonaws.com/generated/content.mp4?X-Amz-Signature=abc123&X-Amz-Expires=3600

// Google Cloud Storage presigned URL
https://storage.googleapis.com/your-bucket/content.jpg?X-Goog-Signature=xyz789

// Custom storage endpoint
https://storage.example.com/uploads/generated-image.jpg
```

The content data will be sent as the request body to the specified URL when generation is complete.

### [safety](https://runware.ai/docs/models/ovi#request-safety)

- **Path**: `safety.checkContent`
- **Type**: `object (2 properties)`

Content safety checking configuration for video generation.

#### [checkContent](https://runware.ai/docs/models/ovi#request-safety-checkcontent)

- **Path**: `safety.checkContent`
- **Type**: `boolean`
- **Default**: `false`

Enable or disable content safety checking. When enabled, defaults to `fast` mode.

#### [mode](https://runware.ai/docs/models/ovi#request-safety-mode)

- **Path**: `safety.mode`
- **Type**: `string`
- **Default**: `none`

Safety checking mode for video generation.

**Allowed values**:

- `none` Disables checking.
- `fast` Checks key frames.
- `full` Checks all frames.

### [ttl](https://runware.ai/docs/models/ovi#request-ttl)

- **Type**: `integer`
- **Min**: `60`

Time-to-live (TTL) in seconds for generated content. Only applies when `outputType` is `URL`.

### [includeCost](https://runware.ai/docs/models/ovi#request-includecost)

- **Type**: `boolean`
- **Default**: `false`

Include task cost in the response.

### [numberResults](https://runware.ai/docs/models/ovi#request-numberresults)

- **Type**: `integer`
- **Min**: `1`
- **Max**: `4`
- **Default**: `1`

Number of results to generate. Each result uses a different seed, producing variations of the same parameters.

### [acceleratorOptions](https://runware.ai/docs/models/ovi#request-acceleratoroptions)

- **Path**: `acceleratorOptions.cacheEndStep`
- **Type**: `object (7 properties)`

Advanced caching mechanisms to speed up generation.

#### [cacheEndStep](https://runware.ai/docs/models/ovi#request-acceleratoroptions-cacheendstep)

- **Path**: `acceleratorOptions.cacheEndStep`
- **Type**: `integer`
- **Min**: `1`

Absolute step number to end caching. Must be greater than `cacheStartStep` and less than or equal to `steps`.

#### [cacheEndStepPercentage](https://runware.ai/docs/models/ovi#request-acceleratoroptions-cacheendsteppercentage)

- **Path**: `acceleratorOptions.cacheEndStepPercentage`
- **Type**: `integer`
- **Min**: `1`
- **Max**: `100`

Percentage of steps to end caching. Alternative to `cacheEndStep`. Must be greater than `cacheStartStepPercentage`.

#### [cacheMaxConsecutiveSteps](https://runware.ai/docs/models/ovi#request-acceleratoroptions-cachemaxconsecutivesteps)

- **Path**: `acceleratorOptions.cacheMaxConsecutiveSteps`
- **Type**: `integer`
- **Min**: `1`
- **Max**: `5`
- **Default**: `3`

Limits the maximum number of consecutive steps that can use cached computations before forcing a fresh computation.

#### [cacheStartStep](https://runware.ai/docs/models/ovi#request-acceleratoroptions-cachestartstep)

- **Path**: `acceleratorOptions.cacheStartStep`
- **Type**: `integer`
- **Min**: `0`

Absolute step number to start caching. Must be less than `cacheEndStep`.

#### [cacheStartStepPercentage](https://runware.ai/docs/models/ovi#request-acceleratoroptions-cachestartsteppercentage)

- **Path**: `acceleratorOptions.cacheStartStepPercentage`
- **Type**: `integer`
- **Min**: `0`
- **Max**: `99`

Percentage of steps to start caching. Alternative to `cacheStartStep`. Must be less than `cacheEndStepPercentage`.

#### [teaCache](https://runware.ai/docs/models/ovi#request-acceleratoroptions-teacache)

- **Path**: `acceleratorOptions.teaCache`
- **Type**: `boolean`
- **Default**: `false`

TeaCache acceleration for transformer-based models. Estimates step differences to skip redundant computations.

#### [teaCacheDistance](https://runware.ai/docs/models/ovi#request-acceleratoroptions-teacachedistance)

- **Path**: `acceleratorOptions.teaCacheDistance`
- **Type**: `float`
- **Min**: `0`
- **Max**: `1`
- **Step**: `0.01`
- **Default**: `0.5`

Controls the aggressiveness of the TeaCache feature. Lower values prioritize quality, higher values prioritize speed.

**Inputs**

Input resources for the task (images, audio, etc). These must be nested inside the \`inputs\` object.

### [image](https://runware.ai/docs/models/ovi#request-inputs-image)

- **Path**: `inputs.image`
- **Type**: `string`
- **Required**: true

Image input (UUID, URL, Data URI, or Base64).

**Generation Parameters**

Core parameters for controlling the generated content.

### [model](https://runware.ai/docs/models/ovi#request-model)

- **Type**: `string`
- **Required**: true
- **Value**: `runware:190@1`

Identifier of the model to use for generation.

**Learn more** (3 resources):

- [Text To Image: Model Selection The Foundation Of Generation](https://runware.ai/docs/guides/text-to-image#model-selection-the-foundation-of-generation) (guide)
- [Image Inpainting: Model Specialized Inpainting Models](https://runware.ai/docs/guides/image-inpainting#model-specialized-inpainting-models) (guide)
- [Image Outpainting: Other Critical Parameters](https://runware.ai/docs/guides/image-outpainting#other-critical-parameters) (guide)

### [positivePrompt](https://runware.ai/docs/models/ovi#request-positiveprompt)

- **Type**: `string`
- **Required**: true

Text prompt describing elements to include in the generated output.

**Learn more** (2 resources):

- [Text To Image: Prompts Guiding The Generation](https://runware.ai/docs/guides/text-to-image#prompts-guiding-the-generation) (guide)
- [Image Outpainting: Other Critical Parameters](https://runware.ai/docs/guides/image-outpainting#other-critical-parameters) (guide)

### [fps](https://runware.ai/docs/models/ovi#request-fps)

- **Type**: `integer`
- **Max**: `120`
- **Default**: `24`

Frames per second for video generation. Higher values create smoother motion but require more processing time.

### [seed](https://runware.ai/docs/models/ovi#request-seed)

- **Type**: `integer`
- **Min**: `0`
- **Max**: `9223372036854776000`

Random seed for reproducible generation. When not provided, a random seed is generated in the unsigned 32-bit range.

**Learn more** (1 resource):

- [Text To Image: Seed Controlling Randomness Deterministically](https://runware.ai/docs/guides/text-to-image#seed-controlling-randomness-deterministically) (guide)

### [steps](https://runware.ai/docs/models/ovi#request-steps)

- **Type**: `integer`
- **Min**: `1`
- **Max**: `100`
- **Default**: `30`

Total number of denoising steps. Higher values generally produce more detailed results but take longer.

**Learn more** (1 resource):

- [Text To Image: Steps Trading Quality For Speed](https://runware.ai/docs/guides/text-to-image#steps-trading-quality-for-speed) (guide)

**Features**

Standalone addons and post-processing features.

### [audioCFGScale](https://runware.ai/docs/models/ovi#request-advancedfeatures-audiocfgscale)

- **Path**: `advancedFeatures.audioCFGScale`
- **Type**: `float`
- **Min**: `0`
- **Max**: `10`
- **Default**: `4`

Classifier-free guidance scale for the audio diffusion process. Higher values increase adherence to the text prompt.

### [audioNegativePrompt](https://runware.ai/docs/models/ovi#request-advancedfeatures-audionegativeprompt)

- **Path**: `advancedFeatures.audioNegativePrompt`
- **Type**: `string`

Text describing elements to avoid in the generated audio.

### [slgLayer](https://runware.ai/docs/models/ovi#request-advancedfeatures-slglayer)

- **Path**: `advancedFeatures.slgLayer`
- **Type**: `integer`
- **Min**: `0`
- **Max**: `30`

Skip-layer guidance layer index. Set to null to disable.

### [videoCFGScale](https://runware.ai/docs/models/ovi#request-advancedfeatures-videocfgscale)

- **Path**: `advancedFeatures.videoCFGScale`
- **Type**: `float`
- **Min**: `0`
- **Max**: `10`
- **Default**: `5`

Classifier-free guidance scale for the video diffusion process. Higher values increase adherence to the text prompt.

### [videoNegativePrompt](https://runware.ai/docs/models/ovi#request-advancedfeatures-videonegativeprompt)

- **Path**: `advancedFeatures.videoNegativePrompt`
- **Type**: `string`

Text describing elements to avoid in the generated video.

## Response Parameters

### [taskType](https://runware.ai/docs/models/ovi#response-tasktype)

- **Type**: `string`
- **Required**: true
- **Value**: `videoInference`

Type of the task.

### [taskUUID](https://runware.ai/docs/models/ovi#response-taskuuid)

- **Type**: `string`
- **Required**: true
- **Format**: `UUID v4`

UUID of the task.

### [videoUUID](https://runware.ai/docs/models/ovi#response-videouuid)

- **Type**: `string`
- **Required**: true
- **Format**: `UUID v4`

UUID of the output video.

### [videoURL](https://runware.ai/docs/models/ovi#response-videourl)

- **Type**: `string`
- **Format**: `URI`

URL of the output video.

### [videoBase64Data](https://runware.ai/docs/models/ovi#response-videobase64data)

- **Type**: `string`

Base64-encoded video data.

### [videoDataURI](https://runware.ai/docs/models/ovi#response-videodatauri)

- **Type**: `string`
- **Format**: `URI`

Data URI of the output video.

### [seed](https://runware.ai/docs/models/ovi#response-seed)

- **Type**: `integer`

The seed used for generation. If none was provided, shows the randomly generated seed.

### [NSFWContent](https://runware.ai/docs/models/ovi#response-nsfwcontent)

- **Type**: `boolean`

Flag indicating if NSFW content was detected.

### [cost](https://runware.ai/docs/models/ovi#response-cost)

- **Type**: `float`

Task cost in USD. Present when `includeCost` is set to `true` in the request.

## Examples

### Rain-Soaked Arcade Concourse (Image to Video)

[Watch video](https://assets.runware.ai/examples/ovi/9888fd6b-84f7-48ae-9bfa-bed8726e28eb.mp4)

**Request**:

```json
{
  "taskType": "videoInference",
  "taskUUID": "fd9a5ac6-7acc-44ef-a961-cf55b99e41cd",
  "model": "runware:190@1",
  "positivePrompt": "Animate this rainy retro-futurist arcade concourse into a cohesive audiovisual sequence. The camera drifts forward at walking pace through the passageway as puddles ripple under falling droplets from ceiling leaks. Game cabinet screens pulse and flicker in staggered rhythms, vending machines hum softly, and reflected colors slide across the wet floor. A tram glides past in the background beyond the arches, sending a low metallic rumble through the space. People in translucent raincoats cross frame naturally, some pausing at machines, others hurrying through, with believable footfalls, fabric rustle, distant chatter, and reverberant ambience. Occasional thunder rolls outside and the electrical buzz subtly swells as lights blink overhead. Preserve the composition of the source image while adding cinematic motion, synchronized environmental sound, layered depth, and realistic timing.",
  "fps": 24,
  "seed": 71241,
  "steps": 30,
  "inputs": {
    "image": "https://assets.runware.ai/assets/inputs/839ea199-a462-46b8-90ce-c703cac214f3.jpg"
  }
}
```

**Response**:

```json
{
  "taskType": "videoInference",
  "taskUUID": "fd9a5ac6-7acc-44ef-a961-cf55b99e41cd",
  "videoUUID": "4585f688-3f56-4cdf-9750-de1343c9d355",
  "videoURL": "https://vm.runware.ai/video/os/a10dlim3/ws/5/vi/4585f688-3f56-4cdf-9750-de1343c9d355.mp4",
  "seed": 71241,
  "cost": 0.1171
}
```

---

### Stormy Lighthouse Rescue Approach (Image to Video)

[Watch video](https://assets.runware.ai/examples/ovi/641ca2f5-c6a7-4ba2-be05-4caf9237c136.mp4)

**Request**:

```json
{
  "taskType": "videoInference",
  "taskUUID": "6537bd8a-b38e-4579-9b6f-7f48cd2f4f38",
  "model": "runware:190@1",
  "positivePrompt": "Animate this storm-battered lighthouse scene into a high-tension cinematic rescue sequence. The helicopter advances through heavy rain and crosswinds, rotor blades slicing mist into spiraling sheets. The lighthouse beacon sweeps across the sea and briefly catches the aircraft fuselage. Waves hammer the rocks in irregular bursts, white spray rising with each impact. Lightning flashes intermittently, revealing texture in the clouds and ocean surface. Camera feel: slow forward drift with subtle handheld turbulence, as if filmed from another aircraft nearby. Motion should feel physically grounded and coherent: rain driven sideways by wind, foam dragged back into the surf, helicopter navigation lights pulsing through the storm, searchlight glancing across wet stone. Audio should emerge naturally from the scene with synchronized thunder cracks, rotor thrum, wind gusts, rain striking metal, distant warning siren from the lighthouse, and booming surf. Moody, realistic, suspenseful, immersive.",
  "fps": 24,
  "seed": 79445,
  "steps": 40,
  "inputs": {
    "image": "https://assets.runware.ai/assets/inputs/597fde48-a2bd-4a5b-a57d-2e8673b348e1.jpg"
  }
}
```

**Response**:

```json
{
  "taskType": "videoInference",
  "taskUUID": "6537bd8a-b38e-4579-9b6f-7f48cd2f4f38",
  "videoUUID": "885007e4-58d3-42e8-9bca-5fa150e75eb7",
  "videoURL": "https://vm.runware.ai/video/os/a05d22/ws/5/vi/885007e4-58d3-42e8-9bca-5fa150e75eb7.mp4",
  "seed": 79445,
  "cost": 0.1472
}
```

---

### Glacial Freight Terminal Dawn (Image to Video)

[Watch video](https://assets.runware.ai/examples/ovi/a3ce156e-38d8-4166-8008-69c77a4afb02.mp4)

**Request**:

```json
{
  "taskType": "videoInference",
  "taskUUID": "88fd8e24-b83e-45fd-b606-63f6d3cf3093",
  "model": "runware:190@1",
  "positivePrompt": "A cinematic aerial drift through a remote polar freight terminal at dawn, starting from a wide establishing view and gliding toward docked cargo airships as ground crews move between steel loading gantries. Fine snow streams across the frozen tarmac, turbine fans spool up with visible exhaust haze, suspended cables sway lightly in the wind, warning beacons blink in rhythmic intervals, and distant cargo containers shift on automated sleds. Emphasize realistic environmental motion, crisp cold atmosphere, volumetric breath from workers, subtle camera parallax, and synchronized industrial soundscape with gusting wind, engine rumble, metallic clanks, radio chatter, hydraulic whines, and echoing announcements. Naturalistic, high-detail, grounded cinematic realism.",
  "fps": 24,
  "seed": 14447,
  "steps": 40,
  "inputs": {
    "image": "https://assets.runware.ai/assets/inputs/da99c2f7-1bb5-466a-a313-bd44026f790d.jpg"
  }
}
```

**Response**:

```json
{
  "taskType": "videoInference",
  "taskUUID": "88fd8e24-b83e-45fd-b606-63f6d3cf3093",
  "videoUUID": "4344d183-7c03-4256-9ab7-d5af1cc20627",
  "videoURL": "https://vm.runware.ai/video/os/a05d22/ws/5/vi/4344d183-7c03-4256-9ab7-d5af1cc20627.mp4",
  "seed": 14447,
  "cost": 0.1459
}
```

---

### Windblown Grassland Radio Relay (Image to Video)

[Watch video](https://assets.runware.ai/examples/ovi/8067644e-fd43-4122-8d7a-16911411efb5.mp4)

**Request**:

```json
{
  "taskType": "videoInference",
  "taskUUID": "c4bdc7a1-ae63-476b-818c-d89d64111c00",
  "model": "runware:190@1",
  "positivePrompt": "Animate this still image into a grounded cinematic scene: strong wind ripples through tall grass in waves, guy-wires tremble subtly, loose tarp edge flickers, the service truck suspension shifts slightly in gusts, cloud shadows drift across the field, a flock of small birds lifts from the grass in the distance, the antenna beacon blinks faintly, synchronized natural audio with rushing wind, soft metal creaks, distant turbine-like electrical hum, intermittent radio static and clipped voice fragments from the relay shed, realistic motion, coherent environmental sound design, atmospheric documentary style",
  "fps": 24,
  "seed": 99804,
  "steps": 40,
  "inputs": {
    "image": "https://assets.runware.ai/assets/inputs/42361c12-04bc-489d-8036-61b72bfa935a.jpg"
  }
}
```

**Response**:

```json
{
  "taskType": "videoInference",
  "taskUUID": "c4bdc7a1-ae63-476b-818c-d89d64111c00",
  "videoUUID": "e1373a2c-ce29-425a-8413-64149a954294",
  "videoURL": "https://vm.runware.ai/video/os/a03d21/ws/5/vi/e1373a2c-ce29-425a-8413-64149a954294.mp4",
  "seed": 99804,
  "cost": 0.1466
}
```