Live Single-Stream HDR Production for HDR and SDR Cable Distribution (2020)

By Chris Seeger, NBC Universal, LLC

Developing video content for the extended dynamic range and color depth in high dynamic range (HDR) and wide color gamut (WCG) now common in consumer displays isn’t necessarily new: the first functional 4K/HDR televisions came out in 2016, and popular over-the-top (OTT) video platforms have routinely produced content in HDR since then. However; it is far, far more difficult to shoot and deliver HDR content for live linear workflows than it is for most file-based post produced approaches. That’s because in live HDR production environments, handling graphical placements, color correction, and luminance normalization across what is usually a mix of SDR (standard dynamic range, which is essentially contemporary HDTV) and HDR cameras must be done on-the-fly and in real-time.

Also, differences in system colorimetry exist within the primary HDR systems, specifically Hybrid Log Gamma (HLG) and Perceptual Quantizers (PQ), and took us some time to understand. A functional workflow for live delivery requires multiple levels of conversion for various signals throughout the infrastructure - like graphics, video playback, SDR and native HDR cameras. This three-part paper will explore 1) conversion and perceptual measurement for HDR and SDR; 2) how HDR production workflows are orchestrated for live content, and 3) how those live linear workflows are distributed – atopic likely of most interest to the cable television industry.

In addition, the paper will illuminate the research and collaborative processes necessary to build afunctional, single-stream HDR-SDR workflow, at each stage of the pipeline, without compromising the artistic intent or quality of the distribution paths for either the HDR or the primary (and revenue generating) SDR. In-depth research of color conversions will be discussed and explored, such as the specialized techniques described in the International Telecommunications Union – Radiocommunications Sector’s (ITU-R) Recommendation BT.2124. Production layouts will be explored and described, so that readers gain a deeper understanding of decisions made in the baseband (serial digital interface (SDI) and IP – Internet protocol), file-based conversions/transcodes, and orchestration layers.

By clicking the "Download Paper" button, you are agreeing to our terms and conditions.

Similar Papers

Single-Layer HDR Video Coding with SDR Backward Compatibility
By David Touze, Technicolor; Leon van de Kerkhof, Philips
2017
Streamlining Cable System HDR Deployment with HLG
By Craig K. Tanner, Consultant to CBS Corporation
2019
4K and HDR, More Than More Pixels: How New Market And Technology Dynamics Are Defining Next-Generation TV
By Ken Goeller, Vice President, Solutions Engineering Deluxe OnDemand™
2015
High Dynamic Range, Visual Adaptation, And Consumer Perception: Applying Visual Science In The Search For Consensus On HDR
By Sean T. McCarthy, Ph.D., ARRIS
2015
High Dynamic Range for HD and Adaptive Bitrate Streaming
By Sean T. McCarthy, Ph.D., Sean McCarthy, Ph.D. Consulting
2017
RF Testing Applications for Software-Defined Radio
By Robert M. Lund, Comcast; Kathryn Sanders, Sanders RF Consulting LLC
2020
Media Asset Management: The Need, The Choices, The Pay-off
By Wendell Bailey, Dr. Peter Smith, NBC
2001
Not All 4K Is Created Equal: Finding Clarity, Reducing Costs
By Theron Trowbridge, Director of Encoding Operations & Advanced Video Technology, Deluxe Digital Distribution
2014
The Universal Communications System of the Future, Telephone or TV Cable?
By Paul Baran, Com21, Inc.
1993
Smart Recordings: Dynamic Search and Record of Live TV
By Chris Lintz, Comcast VIPER
2017
More Results >>