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19 May 2015 Use of KLV to combine metadata, camera sync, and data acquisition into a single video record
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Abstract
SMPTE has designed in significant data spaces in each frame that may be used to store time stamps and other time sensitive data. There are metadata spaces in both the analog equivalent of the horizontal blanking referred to as the Horizontal Ancillary (HANC) space and in the analog equivalent of the vertical interval blanking lines referred to as the Vertical Ancillary (VANC) space. The HANC space is very crowded with many data types including information about frame rate and format, 16 channels of audio sound bites, copyright controls, billing information and more than 2,000 more elements. The VANC space is relatively unused by cinema and broadcasters which makes it a prime target for use in test, surveillance and other specialized applications. Taking advantage of the SMPTE structures, one can design and implement custom data gathering and recording systems while maintaining full interoperability with standard equipment. The VANC data space can be used to capture image relevant data and can be used to overcome transport latency and diminished image quality introduced by the use of compression.
© (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Paul Hightower "Use of KLV to combine metadata, camera sync, and data acquisition into a single video record", Proc. SPIE 9463, Motion Imagery: Standards, Quality, and Interoperability, 94630K (19 May 2015); https://doi.org/10.1117/12.2192446
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