Live streaming of art drawings provides the watchers a chance to spark a conversation with the artist hosting the said stream. Con is that while this is going on, we can't replay the video without risking lagging behind what the artist is currently doing.

Watching a recorded video of art drawings allows the watchers to replay it and pick up a number of tips as to how to draw/overcome a certain obstacle. But then this won't offer any social experience, given how we would be watching a replay on our own.