StabilityAudioInpaint - ComfyUI Built-in Node Documentation

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

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Transforms part of an existing audio sample using text instructions. This node allows you to modify specific sections of audio by providing descriptive prompts, effectively “inpainting” or regenerating selected portions while preserving the rest of the audio.

Inputs

Parameter	Data Type	Required	Range	Description
model	STRING	Yes	"stable-audio-2.5"	The AI model to use for audio inpainting.
prompt	STRING	Yes		Text description guiding how the audio should be transformed (default: empty). Maximum length is 10,000 characters.
audio	AUDIO	Yes		Input audio file to transform. Audio must be between 6 and 190 seconds long.
duration	INT	No	1 to 190	Controls the duration in seconds of the generated audio (default: 190).
seed	INT	No	0 to 4294967294	The random seed used for generation (default: 0).
steps	INT	No	4 to 8	Controls the number of sampling steps (default: 8).
mask_start	INT	No	0 to 190	Starting position in seconds for the audio section to transform (default: 30).
mask_end	INT	No	0 to 190	Ending position in seconds for the audio section to transform (default: 190).

Note: The mask_end value must be greater than the mask_start value. The input audio must be between 6 and 190 seconds in duration.

Outputs

Output Name	Data Type	Description
audio	AUDIO	The transformed audio output with the specified section modified according to the prompt.

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