RIST: Making IP Video Broadcast Quality
Broadcasters and video content providers are increasingly using the Internet to contribute and distribute high quality video. Better compression technology and infrastructure improvements are making it a much more viable alternative to costly dedicated links. Indeed, ViacomCBS recently announced that it has migrated its channels from satellite to IP. However, it is not without its challenges. As this transition continues, being able to reliably deliver that video at broadcast- grade quality is becoming all-the-more important. No matter how that is achieved, the video needs to be delivered where it needs to be, when it needs to be there, with no impact on the quality or viewing experience.
There are a number of proprietary solutions to ensure that video can be distributed over unmanaged IP networks (such as the Internet), but these have their limitations, the most significant perhaps being the lack of interoperability. Reliable Internet Stream Transport (RIST) is a set of open industry specifications that detail how to deliver video over unmanaged IP networks with low latency while keeping that broadcast quality. Being a set of open specifications means that it is fully interoperable, regardless of the vendor. With IP becoming increasingly popular for video, RIST is likely to play an important role in the future of broadcast video, but what is it and how does it actually help?