ANSI SCTE-172-2011 pdf download CONSTRAINTS ON AVC VIDEO CODING FOR DIGITAL PROGRAM INSERTION
1.0 SCOPE This document defines additional video coding and transport constraints on ANSI/SCTE 128 (which constrains ITU-T H.264/ ISO/IEC 14496-10 (“AVC”) video compression) for Digital Program Insertion applications using SCTE 35 messaging. Note: This standard applies only when both the insertion content and the network use AVC video coding.
2.0 DEFINITIONS AND ACRONYMS Throughout this document, the terms used have specific meanings. Because some of the terms that are defined in ISO/IEC 13818-1 [3] and ISO/IEC 14496-10 [4] have very specific technical meanings, the reader is referred to the original sources for their definition. For terms used in this document, brief definitions are given below.
3.0 REFERENCES
3.1 Normative References The following documents contain provisions, which, through reference in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreement based on this standard are encouraged to investigate the possibility of applying the most recent editions of the documents listed below.
3.1.1 SCTE References
1. ANSI/SCTE 35-2007, Digital Program Insertion Cueing Message for Cable.
2. ANSI/SCTE 128-2010a, AVC Video Systems and Transport Constraints for Cable Television.
3.1.2 Standards from other Organizations
3. ISO/IEC 13818-1:2007 (E), International Standard, Information technology – Generic coding of moving pictures and associated audio information: Systems.
4. ISO/IEC 14496-10 (ITU-T H.264), International Standard (2009), Advanced video coding for generic audiovisual services.
3.2 Informative References
The following documents may provide valuable information to the reader but are not required when complying with this standard.
6. ANSI/SCTE 104-2004, Automation System to Compression System Communications Applications Program Interface (API).
4.0 DIGITAL PROGRAM INSERTION SYSTEM OVERVIEW (INFORMATIVE) Digital Program Insertion assumes a linear program delivery with periodic insertion opportunities signaled by ANSI/SCTE 35 [1] splice_info_section( ) messages carried in TS packets of a particular PID or PIDs within the program’s TS. Insertion opportunities signal first a splice from network PTS value (usually to an advertisement) and optionally followed some time later by the signaling of a splice back into a different (usually later) network PTS value. An alternative signaling method signals only the first PTS but supplies a duration and signals “auto return to network.” Signaling may also, in the case of content which may be delivered in a non-time-linear method (e.g. VoD), specify that the return to network PTS value be the same as the initial PTS value.