The 2009 NAB Show Booth N2502  

NAB White Paper: Metadata Challenges for Today’s TV Broadcast Systems

by Randy Conrod

Understanding metadata such as “audio metadata” and “Active Format Description” (AFD) is a challenge until one understands the transport of video, audio and “extra information” in today’s systems. Looking back into how extra information has traditionally been moved in analog NTSC/PAL and 270 Mb/s infrastructures allows one to understand how that “extra information” is carried in 1.5 Gb/s and now 3.0 Gb/s infrastructures. How to find and view metadata using measurement equipment is another challenge as new systems are commissioned. Even if all is ideal and metadata is utilized across the system, there still can be issues.

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