Welcome to the NAB’s 2020 Broadcast Engineering and Information Technology (BEIT) Conference Proceedings. The papers offered here have been presented at the annual BEIT Conference at NAB Show, the world’s largest trade show for the media content creation and distribution industry.

The BEIT Conference program is established each year by the NAB Broadcast Engineering and Information Technology Conference Committee, a rotating group of senior technologists from NAB member organizations, along with representatives from the Society of Broadcast Engineers (SBE). The 2020 BEIT Conference Committee roster is available here.

The content available in the BEIT Conference Proceedings is covered under copyright provisions listed here.

2020 NAB BEIT Conference Proceedings

  • Broadcast Media Creation as a Service: Dynamically Scalable Environments Powered by Infrastructure-as-Code and the Public Cloud - $15

    Date: April 26, 2020
    Topics: ,

    Traditionally, the infrastructure required for broadcast media creation has consisted of specialized GPU workstations, high-performance storage arrays, complex networking, and video wiring; all of which are capital intensive and costly to maintain. Over the past year, NBCUniversal has been evaluating a cloud infrastructure model, to provide on-air media creation as a service to its creative teams. Virtual Desktop Infrastructure (VDI) technology has been around for years, but because of media specific challenges (GPU utilization, frame rate, color representation, etc.), it has not been fully adopted in media workflows, until now. Utilizing GPU-enabled cloud-based virtual machines, dynamically scalable high-performance cloud-native storage, and infrastructure-as-code methodologies, we are now able to provide full end-to-end media production workflows in the public cloud. The infrastructure-as-code philosophy treats compute, storage, database, and network systems as software; prioritizing automation, efficiency, versioning, and reusability. Closely aligned, configuration management tools allow us to deploy software and specialized configurations to many systems simultaneously. Using an automation-forward approach, we know exactly what is going to be applied, how it will propagate through the infrastructure, and what dependencies are involved. Elastic scalability of compute and storage eliminates over-provisioning (and its related capital investments), and provides the ability to dynamically add/remove resources as necessary. Additionally, the use of IP video technology enables devices and applications to share audio and video across the network. Through configuration examples and system diagrams, this paper will highlight the technical details of this programmatically reproducible solution, as well as the challenges and benefits of media creation in the cloud. Critically, we seek to offer the broadcast community an insight into ?non-broadcast? technologies and tools which are fast becoming crucial to our industry. Key data points and discussion topics include network bandwidth and cloud connectivity requirements, performance metrics for cloud storage solutions, scalability factors and user experience ? can creatives tell the difference between traditional workstations and cloud virtual machines?

    Kevin Fornito | NBCUniversal | New York, NY 10112
    Chris Zembower | NBCUniversal | New York, NY 10112
    Steve Sneddon | NBCUniversal | New York, NY 10112



  • Can UHD OTT be Complementary to Terrestrial UHD Broadcast? - $15

    Date: April 26, 2020
    Topics: ,

    UHD delivery over terrestrial networks is a challenge in countries where there is no dedicated spectrum allocated for it. In an environment where UHD has to be simulcast with existing SD and HD, only a limited number of channels can be broadcast in UHD. In some cases, they do not have the spectrum for a 24/7 UHD broadcast; only a part-time channel through a time slot system is possible. With the advance of low latency scheme for OTT (i.e., DASH and HLS), it is now possible to mix and match broadcast and OTT without a noticeable difference in delay between the two delivery mechanisms. Broadcasters can offer an UHD experience 24/7 by using other delivery channels for UHD, while HD (1080p60 HDR) is transmitted OTA. This paper will examine OTT UHD delivery and assess which solution is the best from a technical and financial point of view.

    Thierry Fautier | Harmonic | San Jose, California, United States



  • Changes and Impact of ANSI/TIA-222-H on Existing and New Broadcast Infrastructure - $15

    Date: April 26, 2020
    Topics: ,

    ANSI/TIA-222-H is the latest revision of the 222 design standard from TIA, effective January 1, 2018. In a little less than 2 years, the updated standard has had a profound impact on structural design, evaluation and maintenance of tower infrastructure. These changes include more efficient evaluation of wind, ice and earthquake loads, greater clarity around mounts and antennas designs and focus on existing infrastructure, specifically with respect to inspection, anchor evaluation and construction expectations. This paper / presentation will highlight these changes, compare to earlier revisions and discuss implementation / adoption nationwide.

    Bryan Lanier | American Tower Corporation | Cary, NC USA
    John Wahba | Turris Engineering Inc. | Georgetown, ON CANADA



  • Colocating AM Transmitter Facilities with Cellular Monopole Towers - $15

    Date: April 26, 2020
    Topics: ,

    Cellular monopole towers can be efficiently used for AM transmitter facilities. Slant or shunt-fed antennas have been used for years, but recently the technique has become an efficient way use the ubiquitous cellular monopole as an AM antenna.

    Co-locating the AM transmission facility with the cellular monopole is somewhat ironic. In the early days of cellular phone service development, AM broadcasters often leased space at the top of their AM towers for cellular carriers that were anxious to accommodate the rapidly developing cell phone market. Broadcasters modified their common series fed towers with skirt fed modifications to allow the installation of coaxial and power feeds across the antenna base to the cellular antennas mounted at the top of the AM tower.

    Meanwhile, AM broadcasting has been in survival mode. Long-established AM transmitting sites are being displaced as a result of increasing real estate values and environmental restrictions. The AM broadcaster is also dealing with competition from online streaming and higher quality FM broadcasting. In the last decade, the number of licensed AM stations has declined by 188, while FM stations have increased by 1,242 according to FCC statistics.

    Various means of relocation of AM antenna facilities have been developed with the most popular to co-locate with existing AM stations, with two or more stations sharing the same transmitter site where the common location will provide adequate service.
    The technique of using a slant-fed or shunt-excited antenna was developed decades ago in the early development of AM radio. Today, with several thousand cellular monopole installations, many of them ranging from 100 to 200 feet high, many have the potential to serve as AM antennas.

    Several years ago, Ben Dawson of Hatfield and Dawson Engineers in Seattle, published a paper titled ?The Slant Wire Shunt Fed Monopole: A Neglected but Invaluable Technique?. In his paper, Dawson concludes that the slant wire feeds are simpler electrically than other ways of feeding grounded-based structures. The slant wire technique also imposes far less structural load and is less susceptible to weather-related damage in hostile climate conditions. Dawson also concludes the shunt-fed monopole provides convenient impedance matching, good bandwidth, and efficient radiation patterns.

    James Dalke (the author) is implementing the Hatfield and Dawson designed slant-wire-fed cellular monopole for station KARR-AM, 1460 kHz, in Kirkland, WA. The new transmitter facilities are installed with a slant feed on a 125-foot cell tower. The station is licensed to operate with 740 Watts daytime and provides good coverage for the Kirkland area.

    While the AM coverage from the new site is significantly less than the original site abandoned in 2011, KARR has an FM translator associated with the AM license under the FCC?s AM revitalization rules. The translator operates on 98.5 MHz with 250 Watts and provides a good signal for much of the Seattle market area that was covered by the original AM facility operating at 5 kW.

    James A. Dalke | Dalke Broadcast Services, Inc. | Bellevue, WA
    Stephen S. Lockwood | Hatfield and Dawson Consulting | Seattle, WA



  • Comprehensive Study Of FM Multipath With Repeatable Results - $15

    Date: April 26, 2020
    Topics: ,

    Multipath is an unknown variable in FM broadcasting, and quite possibly the largest annoyance for listeners. Due to momentary changes in FM signal propagation, multipath is extremely difficult to measure in a repeatable manner. On account of this, it becomes difficult to rely on captured measurements to confirm or deny the effects of multipath, when evaluating FM coverage. Additionally, signal processing can affect, or aggravate multipath in a negative manner.

    Today, there are software tools available which are capable to simulating the FM signal path, as well as generating multipath. Due to the controlled environment the software system provides, creating repetitive propagation profiles, as well as synchronized signal content profiles, enables the ability to generate, transmit, and measure FM multipath situations. The testbed provides results which are repeatable, as well as confidence in the data that was acquired.

    This paper will detail and illustrate work that was done using MatLab as a testbed, in this study of multipath. Employing good engineering practice, it will also provide audible examples of the effects on multipath as caused by various signal processing methods such Single Sideband Suppressed Carrier (SSBSC), and dynamic limiter functions of the FM-Stereo system. This is no ad-hoc drive up a coastal highway!

    Frank Foti | Telos Alliance | Cleveland, Ohio USA



  • Creating and Maintaining a Statewide EAS Monitoring Service - $15

    Date: April 26, 2020
    Topics: ,

    Larry Wilkins | Alabama SECC | Birmingham, AL USA



  • Current HDR Drama Productions and Approaches to Parallel SDR/HDR Production Workflows - $15

    Date: April 26, 2020
    Topics: ,

    On December 1st of last year, NHK launched UHDTV broadcasting service, and we have been serious about producing some 4K/8K HDR content such as drama series, sports-related content as well as entertainment. Regarding drama series, each work has its own gamma curve matched to 3D Look-up table. On top of this, using the ?simultaneous conversion? method from 4K-HDR to 2K-SDR during the parallel HDR/SDR production produces optimal video levels and color balance. NHK?s first 4K-HDR annual historical drama series titled ?Idaten? also uses this method to simplify its production and editing workflows. Making full use of HDR production and parallel HDR/SDR production at the shooting location helps us achieve optimal video management and conversion methods. In addition, for entertainment-related programs, we are currently working on making ultra-high definition, wide-color gamut 4K/8K contents as well as parallel HDR/SDR content. In the parallel HDR/SDR production, video equipment settings and optimal workflows have been devised to achieve both accurate video level and colorimetry for 4K/8K HDR video and 2K SDR video. We are also proceeding with lighting verification workflows that combines both HDR and SDR through parallel production.

    Kosuke Hara | NHK (Japan Broadcasting Corporation) | Shibuya-ku, Tokyo, Japan



  • Cybersecurity For Operators, Broadcasters and Suppliers: Key Areas of Focus - $15

    Date: April 26, 2020
    Topics: ,

    The media supply chain is extensive and many companies and organisations can be involved at different points as an original concept is developed and progressed towards a deliverable production. The level of awareness of cyber security issues within those organisations can vary, from extensive down to limited making the process only as strong as the proverbial weakest link in the chain.

    In this talk we look at the key stages in the supply chain:
    – Media Production
    – Media Distribution
    – Media Consumption

    For each we examine the key areas of vulnerability (illustrating with real-world examples) and the security countermeasures that need to be invoked. We take a holistic approach where we consider the role of processes, technologies and people – the staff that work in these companies – in developing a robust cybersecurity strategy.

    Johan Craeybeckx | Eurofins Digital Testing | Hasselt, Belgium



  • Cybersecurity Framework for Broadcaster - $15

    Date: April 26, 2020
    Topics: ,

    From the onset of broadcasting industry,?be it radio, television, satellite or even streaming, “high-availability”?and “real-time”?services?have always been mission critical. With an ever-increasing shift from traditional broadcasting system to an IP-based infrastructure, media companies are inheriting risks associated with IP networks, and extended threat landscape. In addition, conflict with data ownership, protection and accessibility across functions (i.e. IT, broadcast engineer, production team and journalist) often complicates risk mitigation?efforts. In this paper, we propose a robust security architecture based on industry standards such ST2110 and NMOS framework coupled with best practices not only mitigating immanent threats but also equipping departments with tools, practices, and role changes in better preparation to cyberattack.

    Most broadcasters find IT security, such as patch management as roadblocks to their operations. They on one hand struggle with audit compliance and on the other hand risk being off-air ? the most dreadful thought for a broadcaster.

    Another challenge is the flexibility of creating content for Journalist and Production teams in a network environment that is segregating with multiple VLANs behind Firewall and other security devices. In a fast-paced environment, the content that goes through broadcasting Network to be ?On Air?, is often created using unsecure SMB share or FTP protocols, making the system vulnerable to risks associated with human-error, system misconfiguration, or simply intrusion of any kind.

    In the proposal, we share case studies from our security reviews of leading broadcasting companies in Canada, and provide detailed explanation of the security architecture framework based on the following key points:
    – Safeguard network traffic by introducing smart layered approach
    – Limit reliance on excessive network devices to reduce network latency
    – Introduce ?Transmission Gateway? as a unidirectional network layer restricting network flow from broadcast network to production network
    – Securing network from external devices/files (i.e. USB, websites, etc.)
    – Adopting secure IP protocols and protected channels necessary
    – Securing interoperability between vendors by applying NMOS framework
    – Analyzing and implementing integration touch points with ST-2110

    Cybersecurity threats cannot be ignored especially for a broadcasting industry where a downtime of few seconds could cost millions in revenue let alone the reputation loss. The proposed framework is a step towards more resilient infrastructure and improved cyber hygiene practices, while maintaining network efficiency and scalability.

    Yanni Garcia | Gemini Team Security | Arcata, CA, USA
    Omeir Khan | Gemini Team Security | Arcata, CA, USA



  • Demonstration on Next-Generation Immersive Audio in a Live Broadcast Workflow - $15

    Date: April 26, 2020
    Topics: ,

    Rock In Rio is a huge music festival with around 100,000 persons in the Festival site and millions of persons watching by TV, live streaming, and other medias. We provide a lot of experiences to give the ?being there? sense, making a remote mixing using AoIP to send all audio mics to our facility, 7 miles away from the festival site. The whole workflow was projected to make next-generation concepts highlighted: mixing in immersive audio and multi-deliverying the festival content to different media formats, Over-the-Air ISDB-Tb and 5G FeMBMS in Dolby Atmos and MPEG-H, VR experiences in MPEG-H and a VIP mixing in Dolby Atmos in a booth at the festival area.

    H?lio Kuwabara | TV Globo | Rio de Janeiro, Brazil
    Rubens Carvalho | TV Globo | Rio de Janeiro, Brazil
    Leandro Pacheco | TV Globo | Rio de Janeiro, Brazil