PreviewAudio - ComfyUI Built-in Node Documentation - ComfyUI

The Preview Audio node creates a temporary audio preview that can be played directly in the interface, without saving the audio to the ComfyUI output directory. It takes audio data as input and generates a preview widget, allowing users to listen to audio outputs without saving permanent files.

Inputs

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

Note: If the input audio is None, the node raises a ValueError. This can occur when the source video has no audio track.

Outputs

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

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