ComfyUI-Handwriting-Video-Replace

ComfyUI Handwriting Video Replace

Custom ComfyUI node for RunningHub.

It generates an MP4 video from a fixed template video and overlays handwriting-style text on the red paper area.

Node Names

Main node:

HandwritingVideoReplace

Display name:

Handwriting Video Replace

Environment check node:

HandwritingVideoEnvCheck

Display name:

Handwriting Video Env Check

Category:

Video/Handwriting

Files

__init__.py
nodes.py
renderer.py
requirements.txt
assets/aaa.TTF
templates/fixed_template.mp4

Dependencies

opencv-python
Pillow
numpy
imageio-ffmpeg

The renderer uses OpenCV for frame processing, Pillow for text rendering, and FFmpeg for final MP4/audio muxing.

Test Steps On RunningHub

1. Install this custom node repository.
2. Search for Handwriting Video Env Check.
3. Run the environment check node first.
4. Confirm the report shows the required packages and template video are available.
5. Search for Handwriting Video Replace.
6. Run the main node with default parameters.

The main node returns a local MP4 output path as a string.

Inputs

• line_one: first text line
• line_two: second text line
• font_size: default 36
• font_color: default #000000
• max_seconds: default 23
• text_seconds: default 0
• fade_seconds: default 0.12
• output_fps: default 60
• text_position: bottom-center, center, or top-center

Notes

This node uses templates/fixed_template.mp4 as the fixed source material. No video upload input is required.