> ## 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.

# SaveWEBM - ComfyUI Built-in Node Documentation

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

> 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/SaveWEBM/en.md)

The SaveWEBM node saves a sequence of images as a WEBM video file. It takes multiple input images and encodes them into a video using either VP9 or AV1 codec with configurable quality settings and frame rate. The resulting video file is saved to the output directory with metadata including prompt information.

## Inputs

| Parameter         | Data Type | Required | Range            | Description                                                                                                                                       |
| ----------------- | --------- | -------- | ---------------- | ------------------------------------------------------------------------------------------------------------------------------------------------- |
| `images`          | IMAGE     | Yes      | -                | Sequence of input images to encode as video frames                                                                                                |
| `filename_prefix` | STRING    | No       | -                | Prefix for the output filename (default: "ComfyUI")                                                                                               |
| `codec`           | COMBO     | Yes      | "vp9"<br />"av1" | Video codec to use for encoding                                                                                                                   |
| `fps`             | FLOAT     | No       | 0.01-1000.0      | Frame rate for the output video (default: 24.0)                                                                                                   |
| `crf`             | FLOAT     | No       | 0-63.0           | Quality setting where higher crf means lower quality with smaller file size, lower crf means higher quality with larger file size (default: 32.0) |

## Outputs

| Output Name | Data Type | Description                               |
| ----------- | --------- | ----------------------------------------- |
| `ui`        | PREVIEW   | Video preview showing the saved WEBM file |