Video Contribution Networks

Authored by Bob Collmus,
Director, Business Development
Transmission Network Systems

Abstract
Today’s Broadcaster Content Contribution networks are undergoing significant changes as high definition content becomes more ubiquitous and as the cost for fiber optic connectivity becomes more affordable. This changing environment presents new challenges and opportunities for Broadcasters and Services Providers who offer video transport solutions.

The digital video format for these broadcast-grade contribution networks is Serial Digital Interface (SDI). Both high-definition (HD) and standard-definition (SD) SDI formats are defined by the Society of Motion Picture and Television Engineers (SMPTE).

  • SD-SDI (SMPTE 259M) – 270Mbps
  • HD-SDI (SMPTE 292M) – 1.485Gbps

Most providers have historically been offering a 270 Mbps service to enable transport of the SD-SDI from facility to facility content, be it from a sports venue to a production studio or among various geographically dispersed pre-/post-production facilities. Forward-looking service providers are now establishing rates to address uncompressed HD-SDI content.

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