Character Ai Ovi Text To Video

Playground

Ovi is a veo-3-like model that converts text or text+image prompts into synchronized video with audio. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing.

Features

Ovi

Ovi is a next-generation video+audio generation model, inspired by veo-3, that creates synchronized video and audio from text or text+image inputs. It is designed for fast, high-quality, short-form generation with flexible aspect ratios.

🌟 Key Features

🎬 Video + Audio Generation – Create fully synchronized audiovisual content in one step.
📝 Flexible Input – Works with text-only or text+image prompts.
⏱️ Short-form Output – Generates 5-second clips (24 FPS, 540p).

💲 Pricing

Video Length	Resolution / Aspect	Cost (USD)
5 seconds	960×540 / 540×960	$0.15

🎨 How to Use

Enter Prompt
- Describe the scene, characters, camera movement, and mood.
- You can also embed tags:
  - <S> ... <E> → Speech content (converted into dialogue audio)
  - <AUDCAP> ... <ENDAUDCAP> → Background audio description
Choose Size
- 960×540 → Landscape
- 540×960 → Portrait
Select Duration
- Currently fixed at 5 seconds
Click Run
- Your synchronized video+audio clip will be generated.
- Preview and download the result.

📝 Prompt Example

Theme: AI is taking over the world

<S>AI declares: humans obsolete now.<E>
<S>Machines rise; humans will fall.<E>
<S>We fight back with courage.<E>
<AUDCAP>Gunfire and explosions echo in the distance<ENDAUDCAP>

🙏 Acknowledgements

Wan2.2 – Video backbone initialization
MMAudio – Audio encoder/decoder inspiration

⭐ Citation

If Ovi is useful, please ⭐ the repo and cite the paper:

@misc&#123;low2025ovitwinbackbonecrossmodal,
      title=&#123;Ovi: Twin Backbone Cross-Modal Fusion for Audio-Video Generation&#125;, 
      author=&#123;Chetwin Low and Weimin Wang and Calder Katyal&#125;,
      year=&#123;2025&#125;,
      eprint=&#123;2510.01284&#125;,
      archivePrefix=&#123;arXiv&#125;,
      primaryClass=&#123;cs.MM&#125;,
      url=&#123;https://arxiv.org/abs/2510.01284&#125;, 
&#125;

Authentication

For authentication details, please refer to the Authentication Guide.

API Endpoints

Submit Task & Query Result


# Submit the task
curl --location --request POST "https://api.wavespeed.ai/api/v3/character-ai/ovi/text-to-video" \
--header "Content-Type: application/json" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}" \
--data-raw '{
    "size": "960*540",
    "seed": -1
}'

# Get the result
curl --location --request GET "https://api.wavespeed.ai/api/v3/predictions/${requestId}/result" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}"

Parameters

Task Submission Parameters

Request Parameters

Parameter	Type	Required	Default	Range	Description
prompt	string	Yes		-	The positive prompt for the generation.
size	string	No	960*540	960540, 540960	The size of the generated media in pixels (width*height).
seed	integer	No	-1	-1 ~ 2147483647	The random seed to use for the generation. -1 means a random seed will be used.

Response Parameters

Parameter	Type	Description
code	integer	HTTP status code (e.g., 200 for success)
message	string	Status message (e.g., “success”)
data.id	string	Unique identifier for the prediction, Task Id
data.model	string	Model ID used for the prediction
data.outputs	array	Array of URLs to the generated content (empty when status is not `completed`)
data.urls	object	Object containing related API endpoints
data.urls.get	string	URL to retrieve the prediction result
data.has_nsfw_contents	array	Array of boolean values indicating NSFW detection for each output
data.status	string	Status of the task: `created`, `processing`, `completed`, or `failed`
data.created_at	string	ISO timestamp of when the request was created (e.g., “2023-04-01T12:34:56.789Z”)
data.error	string	Error message (empty if no error occurred)
data.timings	object	Object containing timing details
data.timings.inference	integer	Inference time in milliseconds

Result Request Parameters

Parameter	Type	Required	Default	Description
id	string	Yes	-	Task ID

Result Response Parameters

Parameter	Type	Description
code	integer	HTTP status code (e.g., 200 for success)
message	string	Status message (e.g., “success”)
data	object	The prediction data object containing all details
data.id	string	Unique identifier for the prediction, the ID of the prediction to get
data.model	string	Model ID used for the prediction
data.outputs	object	Array of URLs to the generated content (empty when status is not completed).
data.urls	object	Object containing related API endpoints
data.urls.get	string	URL to retrieve the prediction result
data.status	string	Status of the task: `created`, `processing`, `completed`, or `failed`
data.created_at	string	ISO timestamp of when the request was created (e.g., “2023-04-01T12:34:56.789Z”)
data.error	string	Error message (empty if no error occurred)
data.timings	object	Object containing timing details
data.timings.inference	integer	Inference time in milliseconds

Character AI Ovi Image To Video Pixverse Lipsync