> ## 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.
# Vidu Q4 Preview in ComfyUI: Image and Reference to Video
> Generate 3 to 16 second videos with native audio from a first frame or up to 15 reference images using the Vidu Q4 Preview partner nodes in ComfyUI.
**Vidu Q4 Preview** is a video generation model from Vidu, available in ComfyUI through two partner nodes. It generates clips from 3 to 16 seconds with native audio, so the picture, the dialogue, and the sound effects all come from the model in a single pass. Output runs from 540p up to 4K.
In ComfyUI, **Vidu Q4 Image-to-Video Generation** animates a single first frame with an optional prompt, and **Vidu Q4 Reference-to-Video Generation** builds a clip from up to 15 reference images, optional reference audio, and a prompt. Both are cloud API nodes: they need a Comfy account with credits and download no local model. See [Partner Node pricing](/tutorials/partner-nodes/pricing) for the per-second rates.
Image-to-video keeps the aspect ratio of the input image. Reference-to-video takes an explicit `aspect_ratio`, and both nodes expose `duration`, `resolution`, and an `audio` toggle.
## Available workflows
### Image to Video
Animate one image. The image is the first frame of the clip and the output keeps its aspect ratio, so crop the image when you need a different shape. The prompt is optional and describes what happens in the shot.
Open in Comfy Cloud
Download JSON or search "Vidu Q4 Preview: Image to Video" in Template Library
**Input material**
Load into the `LoadImage` node that feeds the Vidu Q4 Image-to-Video node
### Reference to Video
Build a clip from reference images, optional reference audio, and a prompt. Connect up to 15 reference images and up to 3 audio clips, then address them in the prompt by order: `image 1`, `image 2`, and so on. The template uses two reference images to keep a character and a prop consistent across the shot.
Open in Comfy Cloud
Download JSON or search "Vidu Q4 Preview: Reference to Video" in Template Library
**Input materials**
Load into the second reference image slot · `image 2`
Load into the first reference image slot · `image 1`
### Workflow overview
Both templates use a small graph:
* **LoadImage**: provides the first frame (image to video) or the reference images (reference to video)
* **Vidu4ImageToVideoNode** / **Vidu4ReferenceVideoNode**: the core nodes, configured with the `Vidu Q4 Preview` model
* **SaveVideo**: writes the finished clip
### Steps to run
1. **Load the input**: set the first frame for image to video, or the reference images for reference to video
2. **Select the model**: keep `Vidu Q4 Preview` on the node
3. **Choose a resolution and duration**: from `540p` to `4K`, and 3 to 16 seconds
4. **Toggle audio**: leave it on to keep dialogue and sound effects, off for a silent clip
5. **Click Queue** or press `Ctrl+Enter` to generate
## Node controls
| Control | Values | Applies to | Effect |
| - | - | - | - |
| `image` | one image | Image to Video | First frame of the clip. Aspect ratio must be between 1:5 and 5:1 |
| `reference_images` | up to 15 | Reference to Video | One image per slot; a batch on a single slot counts per image. Address them in the prompt by order as `image 1`, `image 2` |
| `reference_audios` | up to 3, 3 to 12 seconds each | Reference to Video | Voice references. Only the voice is used, not the words. Requires `audio` to be on. Assign a voice in the prompt, for example `image 1 says "Hello!" in the voice from audio 1` |
| `prompt` | text, up to 5000 characters | both nodes | Optional for image to video, required for reference to video |
| `aspect_ratio` | `16:9`, `9:16`, `1:1`, `3:4`, `4:3` | Reference to Video | Output aspect ratio. Image to video follows the input image instead |
| `resolution` | `540p`, `720p`, `1080p`, `2K`, `4K` | both nodes | Output resolution, default `720p` |
| `duration` | 3 to 16 seconds | both nodes | Slider, default 5 |
| `audio` | on (default), off | both nodes | Keeps native audio, including dialogue and sound effects |
| `seed` | integer | both nodes | Results can still vary between runs with the same seed |
## Prompting tips
* **Describe the shot, the line, and the sound**. The model renders picture and audio together, so write the action, the spoken line in quotes, and the ambience in the same prompt.
* **Label references by their order**. Reference images are addressed as `image 1`, `image 2`. Say what each one should keep, for example keeping a character's face and outfit from `image 1`.
* **Write dialogue for a voice reference**. Reference audio carries the voice, not the words, so write the line in the prompt and point it at a voice, such as `image 1 says "Welcome back!" in the voice from audio 1`.
* **Keep the aspect ratio inside the allowed range**. Reference images must sit between 1:5 and 5:1.
* **Expect variation between runs**. The seed does not lock the result; the same settings can still produce a different take.
## Get started
1. Update ComfyUI to the latest version
2. Go to Template Library, search for `Vidu Q4 Preview`
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