How OpenPose Preprocessor Fits In
The VACE AI video generator plugin in ComfyUI depends on pose estimation data to generate motion-aware outputs. To make this work, the OpenPose preprocessor must be properly installed and active inside your ComfyUI workflow.

However, many users (myself included) ran into plugin detection errors, missing modules, or broken installs — even after adding the files manually. It turns out that using Gemini CLI not only fixed the VACE plugin issue but also ensured that the OpenPose preprocessor was recognized and functional without additional setup.

If you're facing errors like VACE not appearing, or OpenPose not initializing correctly, this guide will walk you through how I fixed everything step-by-step.

If you’re trying to use the VACE AI video generator in ComfyUI with OpenPose preprocessing, you may have run into frustrating installation errors or plugin detection issues.

After running into the same problem, I found a working solution using Gemini CLI that fully resolved both the VACE install issue and ensured OpenPose preprocessor dependencies were working correctly.

This guide walks through the problem, the exact symptoms, and includes a video demo of the working fix so you can follow along easily.

📺 Watch the full tutorial: https://youtu.be/BmGJZSRFLJw