The editor is not ideal for complex editing,, and for unedited videos with over 100,000 views, saving changes may be restricted (excluding blurring).
For monetized channels, the editor allows for the adjustment of ad breaks. youtube-editor
Changes are applied directly to the published video, and a preview window allows for review before finalization. Important Considerations: The editor is not ideal for complex editing,,
Features include "Face blur," which automatically detects and blurs faces, and "Custom blur" for obscuring specific objects, faces, or sensitive information. youtube-editor
It is best used for "emergency surgery" on published content to avoid having to delete and re-upload the video.