If your conection is a bit slow, the video may hang for a short bits of time as it is streaming. Wait it out if you can.
For the Figure Drawing Factory I created a faux demo of how I do gesture drawings. Gesture drawings are quick studies ranging from 30 seconds to 5 minutes in length. Often used to "loosen up" and gets the body going before doing more formal drawings or paintings. Above is a video of 5 gesture drawing i did in a series, they were from the same pose and were about 1 to 2 minutes long.
Note that sound is not important but to the video, but there is some interesting music in the background.