ANSI SCTE 128-1-2018 pdf free download – AVC Video Constraints for Cable Television Part 1- Coding.
6. MPEG-2 Multiplex And Transport Constraints For AVC
Material formerly in this section now appears in SCTE 128 Part 2.
6.1. Services and Features
This topic is specified in SCTE 128 Part 2.
6.2. MPEG-2 Systems Standard
6.2.1. Video T-STD
This topic is specified in SCTE 128 Part 2.
6.3. Assignment of identifiers
This topic is specified in SCTE 128 Part 2.
6.3.1. AVC Stream Type Codes
This topic is specified in SCTE 128 Part 2.
6.3.2. Descriptors
6.3.2.1. Video descriptor
This topic is specified in SCTE 128 Part 2.
6.3.2.2. Caption service descriptor
This topic is specified in SCTE 128 Part 2.
6.3.2.3. SCTE Adaptation field data descriptor
This topic is specified in SCTE 128 Part 2.
6.4. AVC Program Constraints
This topic is specified in SCTE 128 Part 2.
6.4.1. SCTE Random Access Point (SRAP) Access Unit Composition
This topic is specified in SCTE 128 Part 2.
6.4.2. SRAP Transport Constraints
This topic is specified in SCTE 128 Part 2.
6.4.2.1. TS Packet Header and Adaptation Field Constraints
This topic is specified in SCTE 128 Part 2.
6.4.2.2. SRAP Picture Decoding Time Stamp and SRAP Picture
Presentation Time Stamp Constraints
This topic is specified in SCTE 128 Part 2.
6.4.2.3. Constraints on Decoding Time Stamps
This topic is specified in SCTE 128 Part 2.
6.4.3. Adaptation Field Private Data
This topic is specified in SCTE 128 Part 2.
6.4.3.1. Optional Transport Adaptation Layer Information
This topic is specified in SCTE 128 Part 2.
6.5. PES constraints
This topic is specified in SCTE 128 Part 2.
7. AVC Video Constraints
7.1. Possible video inputs
While not required by this standard, there are certain television production standards, shown in Table 5,that define video formats that relate to compression formats specified by this standard.
The compression formats may be derived from one or more appropriate video input formats. It may be anticipated that additional video production standards may be developed in the future that extend the number of possible input formats.
7.2. Source coding specification
The AVC video compression algorithm shall conform to the High or Main Profile syntax of AVC [2]. AVC is specified herein as bitstreams compliant to a constrained set of High or Main Profile at Level 3.0, 4.0, or 4.2 (level_idc equal to 30, 40 or 42 respectively). Unless specified otherwise in this document, the allowable parameters shall be bounded by the upper limits specified in the AVC Specification [2] 2 .
Profiles and levels shall be constrained as shown in Table 6, Table 9A, Table 9B and Table 9C (indicated values for profile_idc and level_idc).
Additionally, AVC bitstreams shall meet the constraints and specifications described in this document. AVC bitstreams shall utilize the SEI and the VUI syntactic elements defined in AVC [2] Annexes D and E respectively in accordance with this specification. VUI and SEI messages expected to be processed by an AVC Receiver are specified herein. Some VUI and SEI messages are optional and may be ignored by the AVC Receiver as specified herein. AVC Receivers should be made under the assumption that any legal structure as permitted by AVC may occur in the broadcast stream even if presently reserved or unused.
7.2.1. Constraints with respect to AVC
The tables in the following sections list the allowed values for each of the AVC syntactic elements that are restricted beyond the limits imposed by High Profile @ Level 4.0 or 4.2 in the AVC Specification.ANSI SCTE 128-1 pdf download.