How to turn a colour video into a black and white negative video. Invert color.

Blender 2.83: Edit & Render 4K UHD Video Clips. A Video Editing Tutorial.
https://youtu.be/L-ZImAk6Pmw

Blender 2.81: How To Edit A Long Sequence Of Video Clips Using Short Cuts And Proxies. https://youtu.be/K5X7jhtumic

Blender 2.80 Tutorial: Basic Video Editing Using The Video Editor. A Blender Beginners Tutorial. https://youtu.be/NygHG267CQQ

Blender is one of the best free software/freeware editing packages available for Windows, Linux & Apple. Blender is a professional, free and open-source 3D computer graphics software toolset used for creating animated films, visual effects, art, 3D printed models, interactive 3D applications and video games. Blender’s features include 3D modeling, UV unwrapping, texturing, raster graphics editing, rigging and skinning, fluid and smoke simulation, particle simulation, soft body simulation, sculpting, animating, match moving, camera tracking, rendering, motion graphics, video editing and compositing. It also features an integrated game engine.

Blender features a fully functional, production ready Non-Linear video editor called Video Sequence Editor or VSE for short. Blender’s VSE has many features including effects like Gaussian Blur, color grading, Fade and Wipe transitions, and other video transformations.