Idea of Video Chat Icon
There is a square but it is a bit soft at the edges. inside of the square, there is a shape of a human man head. you can see ears, head, neck.
This Video Chat icon is made in Material Design style
developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 6,200 icons, all in the same style and quality.