Digital Video Subcommittee (DVS)
Paul J. Hearty, Ph.D.
Chief Standards Strategist, Digital Media Solutions Lab, Samsung Research America
DVS Major Focus Areas:
- Standards for audio, video, transport technologies, and digital program insertion
- Looking beyond physical infrastructure to study connectivity, compute, bandwidth, storage, service ecosystem, and client ecosystems, especially in the emerging areas of immersive gaming and video
- Three Emmy Award-winning digital video standards:
- SCTE 35 and SCTE 104, digital program ad insertion technologies that are widely used in broadcast and network programming, as well as in over-the-top (OTT) applications
- SCTE 250 Event Signaling and Management API (ESAM)
- SCTE 224 Event Scheduling and Notification Interface (ESNI)
The Digital Video Subcommittee (DVS) identifies requirements and develops standards and operational practices for the design and operation of systems for delivery of video, audio, and associated data for the cable Industry, coordinating as necessary with organizations such as ATSC, CTA, SMPTE, NCTA, and CableLabs.
1 – Video and Audio Services
The Video and Audio Services Working Group focuses on advanced audio codecs, advanced coding technologies, and high dynamic range video.
- Advanced Coding Technologies Drafting Group: The Digital Video Subcommittee (DVS) Advanced Coding Technologies drafting group creates standards and operational practices for H.264, VC1, VVC, and other advanced codecs.
2 – Data and Transport Applications
3 – Network Architecture and Management
4 – Transmission and Distribution
5 – Digital Program Insertion
The Digital Program Insertion (DPI) working group is focused on the development of standards and practices that support an important revenue stream for the cable industry: advertising insertion into programs. The variety of transport, compression, and related technology changes make the aspect of digital program insertion of advertising a challenging and exciting area. Technologies include addressable ad insertion, linear and on-demand ad insertion interfaces, digital cueing and splicing, alternate content/blackout, and metadata.
- 7 – MPEG-DASH
The MPEG-DASH working group investigates implications of MPEG-DASH (Dynamic Adaptive Streaming over HTTP) and creates relevant standards including topics such as MPD constraints and extensions, incorporation of VVC and HDR, extensions and constraints for DASH ISOBMFF profile (including CMAF), a low latency profile for DASH, and a DASH reference architecture. It maintains liaisons with MPEG-DASH, DASH-IF, CTA WAVE, and W3C to help coordinate activities and direction.
- DVS Next Generation Systems
The DVS Next Generation Systems Ad-hoc group monitors technology advances in the industry and advises DVS on technology that should be investigated or pursued, work being conducted in other standards development organizations for which DVS should establish liaisons, and needs or opportunities in the cable industry that should be addressed by DVS.
Work on immersive video by the ad-hoc group addresses infrastructure, applications and requirements to support this emerging area. The driving focuses center on gathering information on key industry issues such as quality assessment and associated metrics together with developing matrices for determining the capabilities of potential services.