ANSI SCTE 248:2018 pdf download.Operational Practice on Multiple Audio Signaling.
This document describes methods and practices for distributing multiple audio streams, languages and services within cable and program provider systems, while continuing to support legacy equipment requirements.
1.3. Benefits
Under current practice. the second audio stream can become oversubscribed. The guidance and recommendations provided in this operational practice document will help cable operators and program providers address this concern and improve the delivery of audio services to the consumer.
1.4. Intended Audience
Program providers (especially producers and engineers involved with content creation and operation of program distribution technologies) and multi-channel video programming distributors (MVPDs) (especially technicians and engineers responsible for receiving and processing program content for distribution to their customers) comprise the intended audience for this operational practice. It may also benett vendors involved in the design, development and manufacturing of equipment and software for content distribution.
2. Normative References
The following documents contain provisions, which, through reference in this text, constitute provisions of this document. At the time of Subcommittee approval, the editions indicated were valid. All documents are subject to revision; and while parties to any agreement based on this document are encouraged to investigate the possibility of applying the most recent editions of the documents listed below, they are reminded that newer editions of those documents might not be compatible with the referenced version.
2.1. SCTE References
• No normative references are applicable.
2.2. Standards from Other Organizations
• No normative references are applicable.
2.3. Published Materials
• No normative references are applicable.
3. Informative References
3.1. SCTE References
• ANSIJSCTE 30 2017, Digital Program Insertion Splicing API
• ANSIISCTE 35 2017, Digital Program Insertion Cueing Message for Cable
• ANSIJSCTE 54, Digital Video Service Multiplex and Transport System Standard for Cable Television
• ANSIJSCTE 224 2015, Event Scheduling and Notification Interftice (ESNI)
• SCTE 236 2017, Content Metadata
• SCTE 243-1 Next Generation Audio Carriage Constraints for Cable Systems: Part I — Common Transport Signaling
• OC-SP-CEP3.0-C01-161026 Content Encoding Profiles 3.0
3.2. Standards from Other Organizations
• ATSC A/53, Part 1:2013, Digital Television System
• ATSC A153, Part 3:20 13, Service Multiplex and Transport Subsystem Characteristics
• ATSC A/53, Part 5:20 14, AC-3 Audio System Characteristics
• ATSC A/53, Part 6:20 13, Enhanced AC-3 Audio System Characteristics
• ATSC A/52:2015, Digital Audio Compression (AC-3) (E-AC-3) Standard
• ATSC A/85:2015, Digital Audio
• ATSC TGI-1013r1 ATSC Technology Group Report: ATSC Audio Language Signaling
• ATSC A/342 Parts 1-3 Audio
• OC-SP-CEP3.0 Content Encoding Profiles 3.0 Specification
https://apps.cablelahs.com/specWication/conteni-encodi ng-profiles-3-0-specification
• ISO 639-1, Code for the representation of Names of Languages – Part I: Alpha-2 code
• ISO 639-2, Code for the representation of Names of Languages – Part 2: Alpha-3 code
• ISO/IEC 23000-19:2018, Intbmiation technology — Multimedia application l?wmat (MPEG-A) — Part 19 Common media application 1brniat (CMAF) for segmented media
• IETF RFC 8216, HTTP Live Streaming https://tools.ietf.org/html/draft-pantos-http-lives treaming-23.ANSI SCTE 248 pdf download.