darkHUB-Video-to-Base64

darkHUB Base64

darkHUB Base64 is a single-purpose ComfyUI custom node.

It accepts an IMAGE output directly from nodes such as VAE Decode, stores the result as Base64 inside the node, and exposes a single Copy Base64 button in the node UI.

Included Node

darkHUB Base64

Inputs:

• images: ComfyUI IMAGE
• format: auto, png, or mp4
• fps: frame rate for MP4 output
• quality: MP4 quality control
• audio (optional): ComfyUI AUDIO, embedded when the output format is MP4

Outputs:

• base64_string
• mime_type
• frame_count

Behavior

• auto chooses png for a single image with no audio.
• auto chooses mp4 for multi-frame batches or when audio is connected.
• The node UI only renders one button: Copy Base64.
• PNG output does not accept audio.
• MP4 output keeps the audio track when audio is connected.

Installation

1. Place this repository inside ComfyUI/custom_nodes/.
2. Install dependencies:

pip install -r requirements.txt

3. Restart ComfyUI.

ffmpeg Notes

• If ffmpeg is available in your system path, the node uses it directly.
• Otherwise the fallback binary from imageio-ffmpeg is used when available.
• MP4 output requires working ffmpeg support.

Version

Current release: 3.0.2

License

MIT License. See LICENSE.