In the context of digital painting (such as in Photoshop or OpenToonz), "Brush.mp4" typically serves as a for a custom brush pack.

Shows "raster level" icons to flag where the brush will function best and simulates textures like "dirty sketches" or fluid concept art.

Showcases the application of tools like the Duo Foundation Brush or scalp massagers to achieve professional results at home.

Quick clips on YouTube Shorts showing how to adjust brush hardness ( key) or create tips from images.