AudioConcat - ComfyUI Built-in Node Documentation

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

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The AudioConcat node combines two audio inputs by joining them together. It takes two audio inputs and connects them in the order you specify, either placing the second audio before or after the first audio. The node automatically handles different audio formats by converting mono audio to stereo and matching sample rates between the two inputs.

Inputs

Parameter	Data Type	Input Type	Default	Range	Description
audio1	AUDIO	required	-	-	The first audio input to be concatenated
audio2	AUDIO	required	-	-	The second audio input to be concatenated
direction	COMBO	required	after	[‘after’, ‘before’]	Whether to append audio2 after or before audio1

Outputs

Output Name	Data Type	Description
AUDIO	AUDIO	The combined audio containing both input audio files joined together