The field of video transport is constantly evolving. As new technologies emerge, they are put to work in transporting video signals. This has been true for radio, coaxial cable, microwave, satellite, and optical fiber, and will also be true for the Internet Protocol, or IP. This latest step in the path of evolution may be the most important yet, because IP allows so many different types of video, audio, and data formats to be transported economically to any corner of the globe.
Several recent technology trends have combined to make video transport over IP networks useful for a wide variety of applications today: