Save Audio MP3 for ComfyUI

A custom node for ComfyUI to save audio as MP3 files.

What It Does

• Saves audio from an upstream node into an MP3 file.
• Lets you choose the MP3 bitrate (defaults to 320k).
• You can set a filename_prefix (e.g., audio_outputs/my_project/) to organize your files.
• An optional song_name input will be added to your filename (spaces are turned into underscores).

Installation

1. Using ComfyUI Manager (Recommended):

• In ComfyUI, open the Manager.
• Click "Install Custom Nodes".
• Search for this node (e.g., "SaveAudioMP3" or by its repository name).
• Click "Install" and restart ComfyUI.

2. Manual Installation (Git Clone):

• Go to your ComfyUI/custom_nodes/ directory in a terminal.
• Run:

  git clone https://github.com/your_username/ComfyUI-SaveAudioMP3.git 
  

  (Make sure to use your actual repository URL here.)
• Restart ComfyUI.

Dependencies

You'll need to install these manually for the node to work:

• pydub (Python library): Open your terminal (and activate your ComfyUI Python environment if you use one) and run:

  pip install pydub
  

• ffmpeg (System utility): pydub needs ffmpeg to do its work.

  • Windows: Download from ffmpeg.org. Extract it, and add the bin folder inside to your system's PATH.
  • macOS: brew install ffmpeg
  • Linux: sudo apt update && sudo apt install ffmpeg (or your distro's equivalent). Make sure you can run ffmpeg -version in your terminal.