SaveWEBM - ComfyUI Built-in Node Documentation

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

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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" "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