SMPTE 2110 is a suite of standards from the

Society of Motion Picture and Television Engineers The Society of Motion Picture and Television Engineers (SMPTE) (, rarely ), founded in 1916 as the Society of Motion Picture Engineers or SMPE, is a global professional association of engineers, technologists, and executives working in the m ...

(SMPTE) that describes how to send

digital media Digital media is any communication media that operate in conjunction with various encoded machine-readable data formats. Digital media can be created, viewed, distributed, modified, listened to, and preserved on a digital electronics device. ' ...

over an

IP network The Internet protocol suite, commonly known as TCP/IP, is a framework for organizing the set of communication protocols used in the Internet and similar computer networks according to functional criteria. The foundational protocols in the suit ...

. SMPTE 2110 is intended to be used within broadcast production and distribution facilities where quality and flexibility are more important than bandwidth efficiency.

History

SMPTE 2110 was based on the TR-03 and TR-04 work published by the

Video Services Forum The Video Services Form (VSF) is an industry association that provides a platform for cooperation and communication between organizations with a stake in media networking. VSF activities include standards development, interoperability testing and ...

on 12 November 2015. The first four parts of SMPTE 2110, -10, -20, -21 and -30, were published by SMPTE on 27 November 2017.

Standard

SMPTE 2110 is specified in several parts: *ST 2110-10 - System architecture and synchronization: essences, RTP, SDP and PTP *ST 2110-20 - Uncompressed video transport, based on

SMPTE 2022 SMPTE 2022 is a standard from the Society of Motion Picture and Television Engineers (SMPTE) that describes how to send digital video over an IP network. Video formats supported include MPEG-2 and serial digital interface The standard was introduc ...

-6 *ST 2110-21 - Traffic shaping and network delivery timing *ST 2110-22 - Constant Bit-Rate Compressed Video transport *ST 2110-30 - Audio transport, based on

AES67 AES67 is a technical standard for audio over IP and audio over Ethernet (AoE) interoperability. The standard was developed by the Audio Engineering Society and first published in September 2013. It is a layer 3 protocol suite based on existing ...

*ST 2110-31 - Transport of

AES3 AES3 is a standard for the exchange of digital audio signals between professional audio devices. An AES3 signal can carry two channels of pulse-code-modulated digital audio over several transmission media including balanced lines, unbalanced ...

formatted audio *ST 2110-40 - Transport of ancillary data

ST 2110-10: System architecture and synchronization

There are several important features of ST 2110-10: * Individual audio, video and ancillary data tracks or clips are carried as separate individual streams. These streams are referred to as "essences", e.g., a 5.1 JPEG mp4 clip could have 9 essences: a video essence, 6 separate audio essences, and two closed caption essences, English and Chinese. *

Real-time Transport Protocol The Real-time Transport Protocol (RTP) is a network protocol for delivering audio and video over IP networks. RTP is used in communication and entertainment systems that involve streaming media, such as telephony, video teleconference applicati ...

(RTP) is used to transmit streaming essences. * Session Initiation Protocol (SIP) is used to manage the connection and distribution of RTP streams including

IP multicast IP multicast is a method of sending Internet Protocol (IP) datagrams to a group of interested receivers in a single transmission. It is the IP-specific form of multicast and is used for streaming media and other network applications. It uses spec ...

one-to-many distribution. *

Precision Time Protocol The Precision Time Protocol (PTP) is a protocol used to synchronize clocks throughout a computer network. On a local area network, it achieves clock accuracy in the sub-microsecond range, making it suitable for measurement and control systems. ...

(PTP) provides global microsecond accuracy timing of all essences. Synchronization is based on

SMPTE 2059 SMPTE 2059 is a standard from the Society of Motion Picture and Television Engineers (SMPTE) that describes how to synchronize video equipment over an IP network. The standard is based on IEEE 1588-2008. SMPTE 2059 is published in two parts on 9 Ap ...

ST 2110-20: Uncompressed video transport

SMPTE 2110-20 defines the key requirements for transporting uncompressed video essence and is built on the

IETF The Internet Engineering Task Force (IETF) is a standards organization for the Internet and is responsible for the technical standards that make up the Internet protocol suite (TCP/IP). It has no formal membership roster or requirements and a ...

, RTP Payload Format for Uncompressed Video.

ST 2110-21: Transmission timing

SMPTE 2110-21 defines three classes of devices based on their transmission timing behavior: NL (for Narrow Linear), N (for Narrow), and W (for Wide). ''NL'' senders transmit at a constant bit rate. ''N'' senders may suspend transmission during the

vertical blanking interval In a raster scan display, the vertical blanking interval (VBI), also known as the vertical interval or VBLANK, is the time between the end of the final visible line of a frame or field and the beginning of the first visible line of the next fra ...

. ''W'' senders are intended to support software implementations of 2110 and adhere to less rigorous transmission timing requirements. A type ''W'' receiver should be able to receive from any type of sender.

ST 2110-22: Constant bit-rate compressed video transport

SMPTE 2110-22 defines the key requirements for transporting compressed video essence. The compression standard needs to provide a constant bitrate, a defined RTP payload and low latency to satisfy the needs of Live production. The majority of the SMPTE 2110-22 implementations uses the

JPEG XS JPEG XS (ISO/IEC 21122) is an interoperable, visually lossless, low-latency and lightweight image and video coding system used in professional applications. Applications of the standard include streaming high quality content for virtual reality ...

lightweight low latency compression standard created by the

Joint Photographic Experts Group The Joint Photographic Experts Group (JPEG) is the joint committee between ISO/IEC JTC 1/SC 29 and ITU-T Study Group 16 that created and maintains the JPEG, JPEG 2000, JPEG XR, JPEG XT, JPEG XS, JPEG XL, and related digital image standards. It ...

to answer the requirements of the SMPTE 2110 standard. The JPEG XS codec has only few video lines of latency in software and hardware implementations, which is less than 1 millisecond. SMPTE 2110-22 is used as an alternative to uncompressed video (SMPTE 2110-20) in live production environment. SMPTE 2110-22 is indeed very suitable to use less bandwidth in local live IP production, remote production, contribution or cloud-based production.

References

{{Digital audio and video protocols SMPTE standards