what is bitrate?

The speed at which digital audio and video content is streamed from a source, such as a file, be rendered properly by a player, or the speed at which binary content in general is streamed on a network. Bitrate is usually measured in kilobits per second (Kbps), for example, 28.8Kbps. The bitrate of a Windows Media file or live stream is determined during the encoding process, when the streaming content is created. Bandwidth is the total bitrate capacity of a network. For audio and video content to render properly when streaming over a network, the bandwidth of the network must be high enough to accommodate the bitrates of all the different content that is concurrently being streamed.