If you have been working with video over IP for a while, you probably are aware of at least two approaches for streaming content over IP networks. The first involves moving professional video from the venue back to the television network facility, and the other is best-effort streaming over the Internet.
The first provides highly reliable transmission over highly managed networks, probably based on the SMPTE 2022 family of standards. The second involves using video servers to stream content on the Web to end-user computers, with less than reliable results. Video freezes, audio dropouts and total loss of the feed are commonplace.
Professional transmission of video over IP is reliable, but it is relatively expensive, it requires the grooming of networks to ensure available bandwidth, and the technology is not deployed in desktop computers and smart phones. The second provides less than perfect results for people who are trying to consume broadcast content on something other than a television set. Broadcasters and media companies needed a different alternative.