> ## Documentation Index
> Fetch the complete documentation index at: https://docs.comfy.org/llms.txt
> Use this file to discover all available pages before exploring further.

# HappyHorseTextToVideoApi - ComfyUI Built-in Node Documentation

> Generates a video based on a text prompt using the HappyHorse model.

Generates a video based on a text prompt using the HappyHorse model. This node sends your prompt and settings to the HappyHorse API, waits for the video to be generated, and then downloads the result.

## Inputs

### Common Inputs

| Parameter | Description | Data Type | Required | Range |
| - | - | - | - | - |
| `model` | The HappyHorse model used for generation, along with its sub-parameters. Selecting a model determines which sub-parameters are available (see the model sections below). | DYNAMIC\_COMBO | Yes | "happyhorse-1.1-t2v"<br />"happyhorse-1.0-t2v" |
| `seed` | Seed to use for generation. Using the same seed with the same inputs will produce the same result. (default: 0). | INT | Yes | 0 to 2147483647 |
| `watermark` | Whether to add an AI-generated watermark to the result. (default: False). | BOOLEAN | Yes | True / False |

### happyhorse-1.1-t2v Inputs

| Parameter | Description | Data Type | Required | Range |
| - | - | - | - | - |
| `prompt` | Prompt describing the elements and visual features. Supports English and Chinese. (default: ""). | STRING | Yes | - |
| `resolution` | The resolution of the output video. | COMBO | Yes | "720P"<br />"1080P" |
| `ratio` | The aspect ratio of the output video. | COMBO | Yes | "16:9"<br />"9:16"<br />"1:1"<br />"4:3"<br />"3:4"<br />"21:9"<br />"9:21"<br />"5:4"<br />"4:5" |
| `duration` | The length of the video in seconds. (default: 5, min: 3, max: 15, step: 1). | INT | Yes | 3 to 15 |

### happyhorse-1.0-t2v Inputs

| Parameter | Description | Data Type | Required | Range |
| - | - | - | - | - |
| `prompt` | Prompt describing the elements and visual features. Supports English and Chinese. (default: ""). | STRING | Yes | - |
| `resolution` | The resolution of the output video. | COMBO | Yes | "720P"<br />"1080P" |
| `ratio` | The aspect ratio of the output video. | COMBO | Yes | "16:9"<br />"9:16"<br />"1:1"<br />"4:3"<br />"3:4" |
| `duration` | The length of the video in seconds. (default: 5, min: 3, max: 15, step: 1). | INT | Yes | 3 to 15 |

Note: The prompt must not be empty; an error is raised if no prompt is provided. Both models support video durations from 3 to 15 seconds. The `happyhorse-1.1-t2v` model offers additional aspect ratios (`21:9`, `9:21`, `5:4`, `4:5`) that are not available with `happyhorse-1.0-t2v`.

## Outputs

| Output Name | Description | Data Type |
| - | - | - |
| `VIDEO` | The generated video file. | VIDEO |

> This documentation was AI-generated. If you find any errors or have suggestions for improvement, please feel free to contribute! [Edit on GitHub](https://github.com/Comfy-Org/embedded-docs/blob/main/comfyui_embedded_docs/docs/HappyHorseTextToVideoApi/en.md)

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