Audio Pad

Node type: utility:audio_pad
Category: Editing

Description

Add leading and trailing silence to an audio clip, pad it up to a minimum length, and resample it (default 48 kHz stereo). Built for reference-audio prep: Seedance @Audio wants the voice to start at 0.5s, a clip of at least 1.8s, 48k stereo, which is lead 0.5 + minimum duration 1.8 with the defaults. The minimum counts the lead and the tail. Free: deterministic processing, content-addressed output.

Canvas ports

These appear as port handles on the left side of the node.

ID	Label	Details
audio	Audio	AUDIO (required)

Sidebar config

These render as form fields in the right-side config panel when the node is selected.

ID	Label	Details
lead	Lead silence (s)	NUMBER
tail	Tail silence (s)	NUMBER
minDuration	Minimum duration (s; blank = none)	NUMBER
sampleRate	Sample rate	TEXT · options: 48000, 44100, 24000, keep
channels	Channels	TEXT · options: stereo, mono, keep
format	Format	TEXT · options: mp3, wav

Outputs

ID	Label	Type
audio	Padded Audio	AUDIO

What it is for

Reference-audio prep in one node. Seedance's @Audio reference wants the voice to start at 0.5s, a clip of at least 1.8s, 48 kHz stereo. Set Lead to 0.5 and Minimum duration to 1.8; the 48 kHz stereo default does the rest.

Settings

• Lead silence (seconds, 0 to 30): silence before the audio.
• Tail silence (seconds, 0 to 30): silence after it.
• Minimum duration (seconds, blank = none): pads the end until the whole file is at least this long. It counts the lead and the tail. A clip already longer is left at its length, never cut.
• Sample rate: 48000 (default), 44100, 24000, or keep.
• Channels: stereo (default), mono, or keep. Mono sources are duplicated to both channels.
• Format: mp3 (default) or wav.

Out-of-range values are refused with the number, never clamped.

Free, and why

Free set, no Run button, refreshes when anything downstream runs. The output is content-addressed, so an unchanged re-run reuses the last file.

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Auto-generated from the Wireflow node registry.