2.Progressive or Asynchronous Video Delivery: This process utilizes the functionalities of a video buffer
. Parts of the video are first downloaded into the buffer, the rest follows while the viewer watches the video from the buffer. It is the only method that works when streaming through unstable connections. It is not, however, feasible for real time streaming. It also has the feature of variable bitrates, which allows for better quality video streaming. This is the method preferred for pay-per-view solutions, due to better quality and the buffering option.