Youtube-editor -

Features include "Face blur," which automatically detects and blurs faces, and "Custom blur" for obscuring specific objects, faces, or sensitive information.

The YouTube Studio Editor is a built-in, browser-based tool designed primarily for making post-upload corrections to videos without losing view counts, comments, or changing the URL . While not a replacement for professional software, it offers essential, free, and permanent editing capabilities, including trimming, blurring, and audio enhancements. youtube-editor

For monetized channels, the editor allows for the adjustment of ad breaks. Features include "Face blur