PreviewAudio - ComfyUI Built-in Node Documentation - ComfyUI

The Preview Audio node lets you listen to audio directly in the ComfyUI interface without saving it to the output directory. It takes audio data as input, verifies it is present, and passes it through while showing a temporary audio player so you can hear the result.

Inputs

Parameter	Description	Data Type	Required	Range
`audio`	The audio data to preview. The node raises a ValueError if the input is None, which can happen when the source video has no audio track.	AUDIO	Yes	-

Outputs

Output Name	Description	Data Type
`audio`	The audio data passed through unchanged from the input.	AUDIO
`ui`	Displays an audio player widget in the interface for previewing the audio.	UI

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