> ## 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.

# Flux3TextToVideoNode - ComfyUI Built-in Node Documentation

> Complete documentation for the Flux3TextToVideoNode node in ComfyUI. Learn its inputs, outputs, parameters and usage.

Generates a video with synchronized audio from a text prompt using FLUX 3. The node sends your prompt to the FLUX 3 service, waits for the generation to finish, and returns the completed video clip.

## Inputs

| Parameter          | Description                                                                                                                                                                      | Data Type | Required | Range                                          |
| ------------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------- | -------- | ---------------------------------------------- |
| `prompt`           | What you want, in plain language; the prompt is interpreted and expanded before generation. Describe ambient sound, music and speech separately for layered audio. (default: "") | STRING    | Yes      | Multiline text                                 |
| `aspect_ratio`     | Output aspect ratio. 'auto' picks one from the prompt and inputs. (default: "auto")                                                                                              | STRING    | Yes      | Multiple options available, including `"auto"` |
| `duration`         | Clip length in seconds. 'auto' fits the length to the content. (default: "auto")                                                                                                 | STRING    | Yes      | Multiple options available, including `"auto"` |
| `resolution`       | Output resolution. (default: "720p")                                                                                                                                             | STRING    | Yes      | `"720p"`<br />`"1080p"`                        |
| `generate_audio`   | Generate synchronized audio (ambient, speech, effects). Off produces a video with no audio track. (default: True)                                                                | BOOLEAN   | Yes      | True<br />False                                |
| `safety_tolerance` | Moderation tolerance, 0 is the strictest. Requests that send images or video are capped at 2 whatever you set here. (default: 2)                                                 | INT       | Yes      | 0 to 4                                         |
| `seed`             | Seed to determine if node should re-run; FLUX 3 picks its own seed, so actual results are nondeterministic regardless of this value. (default: 42)                               | INT       | Yes      | 0 to 4294967295                                |

Note: The `seed` input includes Control After Generate controls in the UI. The displayed price is based on `resolution` and `duration`: HD (720p) is charged at $0.2431 per second and FHD (1080p) at $0.4147 per second. When a fixed duration is chosen, the total estimated cost for the clip is shown; when `duration` is "auto", the per-second rate is shown.

## Outputs

| Output Name | Description                                                                         | Data Type |
| ----------- | ----------------------------------------------------------------------------------- | --------- |
| `video`     | The generated video clip, with synchronized audio when `generate_audio` is enabled. | 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/Flux3TextToVideoNode/en.md)

***

**Source fingerprint (SHA-256):** `35f5e5b1c6dd737afab78f53700997a458781d38149cb64fc60d86a86858b2e6`