ComfyUI SAM-Audio

Custom nodes for using SAM-Audio (Segment Anything Model for Audio) in ComfyUI.

Features

Separate specific sounds from audio using text, visual (video + mask), or time span prompts.

Nodes

Installation

Prerequisites

1. Clone SAM-Audio repository to ComfyUI directory:

cd /path/to/ComfyUI
git clone https://github.com/facebookresearch/sam-audio.git

2. Install dependencies into ComfyUI's Python environment:

# Activate your ComfyUI virtual environment (e.g., ~/venv/comfy)
source ~/venv/comfy/bin/activate

# Install core dependencies
pip install einops torchdiffeq audiobox_aesthetics huggingface_hub xformers

# Install dacvae
pip install git+https://github.com/facebookresearch/dacvae.git

# Install perception_models (provides core.audio_visual_encoder)
pip install git+https://github.com/facebookresearch/perception_models@unpin-deps --no-deps

# Install ImageBind (required for Visual Ranker)
pip install git+https://github.com/facebookresearch/ImageBind.git

# Install LAION-CLAP (required for Text Ranker)
pip install laion-clap

3. Login to HuggingFace:

huggingface-cli login

4. Request access to SAM-Audio HuggingFace repo

Install Custom Node

cd ComfyUI/custom_nodes
git clone https://github.com/t22m003/ComfyUI-sam-audio.git

Note: This custom node requires the sam-audio repository to be present at ComfyUI/sam-audio. The node imports the sam_audio module from this location.

Usage

Text Prompting

1. Load model with SAM-Audio Model Loader
2. Load audio file with Load Audio
3. Connect to SAM-Audio Text Separate and describe the sound to isolate
4. Save result with Save Audio

Span Prompting

1. Load model and audio
2. Use SAM-Audio Span Separate and specify start/end seconds
3. Set the time range where the target sound occurs
4. Save result

Visual Prompting

1. Prepare video frames and mask
2. Connect to SAM-Audio Visual Separate
3. Sound associated with the masked object will be separated

Sample Workflows

Sample workflow files are included in the examples/ directory:

• text_separation_workflow.json - Separate audio using text description
• span_separation_workflow.json - Separate audio by specifying time range
• visual_separation_workflow.json - Separate audio associated with visual objects (uses CLIPSeg from ComfyUI-Essentials and Video Combine from VideoHelperSuite)

To use: Load the workflow JSON file in ComfyUI (drag & drop or File → Load).

Available Models

HuggingFace Models

The following models are automatically downloaded from HuggingFace:

• facebook/sam-audio-small
• facebook/sam-audio-base
• facebook/sam-audio-large (recommended)
• facebook/sam-audio-small-tv (for Visual Prompting)
• facebook/sam-audio-base-tv
• facebook/sam-audio-large-tv

Local Models

To use locally downloaded models, place them in the models/sam_audio/ directory:

ComfyUI/
  models/
    sam_audio/
      my-model/          # Model name (any name)
        config.json      # Required
        checkpoint.pt    # Required

Once properly placed, the model will be available as local/my-model in the node.

Note: Models downloaded from HuggingFace are typically cached in ~/.cache/huggingface/hub/. You can copy or symlink models--facebook--sam-audio-large/snapshots/<hash>/ from that directory to models/sam_audio/sam-audio-large/ for offline usage.

License

This custom node uses SAM-Audio.

SAM-Audio is subject to Meta's "SAM License". Key restrictions:

• Must include SAM License when redistributing
• Must acknowledge use of SAM-Audio in research publications
• Prohibited for military, weapons, or espionage-related use
• Commercial use is allowed (royalty-free)

See SAM License for details.