A possible concise summary is:
The video explains the concept of ambient occlusion, which is the area of shadow that gets the least amount of reflected light, making it the darkest part of the shadow. The video shows how ambient occlusion depends on the availability of ambient light, which is the light that bounces around from various sources. The video also demonstrates how to paint ambient occlusion with different brush strokes and media, and how it can enhance the realism and subtlety of a scene. The video ends with a thank you to the Patreon supporters and an announcement of a live chat event.
Here are the key facts extracted from the text:
1. The term ambient occlusion was coined by 3D software developers to describe the subtle shading in the shadows.
2. Ambient light is the light that is reflected, bounced, or diffused from other sources, such as the sky, the ground, or other objects.
3. Ambient occlusion is the area of shadow that gets the least amount of ambient light, making it the darkest part of the shadow.
4. Ambient occlusion depends on the distance and angle between objects, and the direction and strength of the ambient light source.
5. Ambient occlusion can be used to create realistic and natural-looking lighting effects in paintings, sketches, and 3D models.