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ISO/IEC 13818-1:2007(C)
2 ITU-T H.222.0建议书 (05/2006)
– ITU-T Recommendation T.171 (1996), Protocols for interactive audiovisual services: coded
representation of multimedia and hypermedia objects
.
ISO/IEC 13522-1:1997,
Information technology – Coding of Multimedia and Hypermedia
information – Part 1: MHEG object representation – Base notation (ASN.1)
.
1.2.3 另外的参考文献
– ISO 639-2:1998, Codes for the representation of names of languages – Part 2: Alpha-3 code.
– ISO 8859-1:1998,
Information technology – 8-bit single-byte coded graphic character sets – Part 1:
Latin alphabet No. 1
.
– ISO 15706:2002,
Information and documentation – International Standard Audiovisual Number
(ISAN)
.
– ISO/PRF 15706-2,
Information and documentation – International Standard audiovisual number
(ISAN) – Part 2: Version identifier
.
– ISO/IEC 11172-1:1993,
Information technology – Coding of moving pictures and associated audio
for digital storage media at up to about 1,5 Mbit/s – Part 1: Systems
.
– ISO/IEC 11172-2:1993,
Information technology – Coding of moving pictures and associated audio
for digital storage media at up to about 1,5 Mbit/s – Part 2: Video
.
– ISO/IEC 11172-3:1993,
Information technology – Coding of moving pictures and associated audio
for digital storage media at up to about 1,5 Mbit/s – Part 3: Audio
.
– ISO/IEC 13818-3:1998,
Information technology – Generic coding of moving pictures and associated
audio information – Part 3: Audio
.
– ISO/IEC 13818-6:1998,
Information technology – Generic coding of moving pictures and associated
audio information – Part 6: Extensions for DSM-CC
.
– ISO/IEC 13818-7:2006,
Information technology – Generic coding of moving pictures and associated
audio information – Part 7: Advanced Audio Coding (AAC)
.
– ISO/IEC 13818-11:2004,
Information technology – Generic coding of moving pictures and
associated audio information – Part 11: IPMP on MPEG-2 systems
.
– ISO/IEC 14496-1:2004,
Information technology – Coding of audio-visual objects – Part 1: Systems.
– ISO/IEC 14496-2:2004, Information technology – Coding of audio-visual objects – Part 2: Visual.
– ISO/IEC 14496-3:2005, Information technology – Coding of audio-visual objects – Part 3: Audio.
– Recommendation ITU-R BT.601-6 (2007),
Studio encoding parameters of digital television for
standard 4:3 and wide-screen 16.9 aspect ratios
.
– Recommendation ITU-R BT.470-7 (2005),
Conventional analogue television systems.
– Recommendation ITU-R BR.648,
Digital recording of audio signals.
– ITU-T Recommendation J.17 (1988),
Pre-emphasis used on sound-programme circuits.
– IEC Publication 60908:1999,
Audio recording – Compact disc digital audio system.
第 2 节 — 技术单元
2.1 定义
就本建议书|国际标准而言,下列定义适用。若特指某部分,则该部分补充说明。
2.1.1 access unit (system) 存取单元(系统):显示单元的编码表示。在音频情况中,存取单元为
音频帧的编码表示。
在视频情况中,存取单元包括图像的所有编码数据以及跟随它的任何填充,直至但不包括下一个存取
单元的起始。若图像不由
group_start_code 或 sequence_header_code 为先导,则存取单元伴随图像起始码开
始。若图像由
group_start_code 和/或 sequence_header_code 为先导,则存取单元伴随这些起始码的第一起始
码的首字节开始。比特流中,若它是先导
sequence_end_code 的最后图像,则该编码图像最后字节与
sequence_end_code
之间的所有字节(包括 sequence_end_code)均属于该存取单元。