Audio Stitcher

Documentation

Class name: SaltAudioStitcher
Category: SALT/Audio/Process
Output node: False

The SaltAudioStitcher node is designed for stitching together two audio files with an optional silent transition between them. It enables the creation of a seamless audio experience by combining multiple audio segments.

Input types

Required

audio_a
- The first audio file to be stitched. It serves as the starting point of the stitched audio output.
- Comfy dtype: AUDIO
- Python dtype: bytes
audio_b
- The second audio file to be stitched. It follows the first audio file in the stitched audio output.
- Comfy dtype: AUDIO
- Python dtype: bytes

Optional

silent_transition_seconds
- The duration of silence in seconds to insert between the two audio files. This allows for a smooth transition or pause between the audio segments.
- Comfy dtype: FLOAT
- Python dtype: float

Output types

stitched_audio
- Comfy dtype: AUDIO
- The resulting audio file after stitching the input audio files together, potentially with a silent transition in between.
- Python dtype: bytes

Usage tips

Infra type: CPU
Common nodes: unknown

Source code

class SaltAudioStitcher:
    @classmethod
    def INPUT_TYPES(cls):
        return {
            "required": {
                "audio_a": ("AUDIO", {}),
                "audio_b": ("AUDIO", {}),
            },
            "optional": {
                "silent_transition_seconds": ("FLOAT", {"min": 0.0, "default": 0.0}),
            },
        }

    RETURN_TYPES = ("AUDIO",)
    RETURN_NAMES = ("stitched_audio",)
    FUNCTION = "stitch_audios"
    CATEGORY = "SALT/Audio/Process"

    def stitch_audios(self, audio_a, audio_b, silent_transition_seconds=0.0):
        audio_segment_1 = AudioSegment.from_file(io.BytesIO(audio_a), format="wav")
        audio_segment_2 = AudioSegment.from_file(io.BytesIO(audio_b), format="wav")

        if silent_transition_seconds > 0:
            silence_segment = AudioSegment.silent(duration=int(silent_transition_seconds * 1000))
            stitched = audio_segment_1 + silence_segment + audio_segment_2
        else:
            stitched = audio_segment_1 + audio_segment_2

        return (get_buffer(stitched), )

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