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上传时间: 2009-07-03
详细说明： MP4标准的英文文档，给需要的朋友 Contents Page Foreword........................................................................................................................................................... iv Introduction .................................................. ..................................................................................................... v 1 Scope..................................................................................................................................................... 1 2 Normative references ........................................................................................................................... 1 3 Terms, definitions, symbols and abbreviated terms......................................................................... 1 3.1 Terms and definitions.......................................................................................................................... 1 3.2 Symbols and abbreviated terms.......................................................................................................... 2 4 Extensions to the ISO Base Media File Format.................................................................................. 2 4.1 Introduction .......................................................................................................................................... 2 4.2 File identification.................................................................................................................................. 2 4.3 Independent and Disposable Samples Box ....................................................................................... 2 4.4 Sample groups ..................................................................................................................................... 3 4.4.1 Introduction .......................................................................................................................................... 3 4.4.2 SampleToGroup Box ............................................................................................................................ 4 4.4.3 SampleGroupDescription Box............................................................................................................. 5 4.5 Random access recovery points......................................................................................................... 6 4.5.1 Syntax.................................................................................................................................................... 6 4.5.2 Semantics ............................................................................................................................................. 6 4.6 Representation of new structures in movie fragments..................................................................... 7 5 AVC elementary streams and sample definitions ............................................................................. 7 5.1 Elementary stream structure ............................................................................................................... 7 5.2 Sample and Configuration definition .................................................................................................. 9 5.2.1 Introduction .......................................................................................................................................... 9 5.2.2 Canonical order and restrictions......................................................................................................... 9 5.2.3 AVC sample structure definition ....................................................................................................... 11 5.2.4 Decoder configuration information................................................................................................... 11 5.3 Derivation from ISO Base Media File Format ................................................................................... 13 5.3.1 Introduction ........................................................................................................................................ 13 5.3.2 AVC File type and identification ........................................................................................................ 13 5.3.3 AVC Track Structure ........................................................................................................................... 13 5.3.4 AVC Video Stream Definition............................................................................................................. 13 5.3.5 AVC parameter set stream definition................................................................................................ 15 5.3.6 Template fields used........................................................................................................................... 16 5.3.7 Visual width and height ...................................................................................................................... 16 5.3.8 Parameter sets ................................................................................................................................... 17 5.3.9 Decoding time (DTS) and composition time (CTS).......................................................................... 17 5.3.10 Sync sample (IDR).............................................................................................................................. 17 5.3.11 Shadow sync ...................................................................................................................................... 17 5.3.12 Layering and sub-sequences ............................................................................................................ 18 5.3.13 Alternate streams and switching pictures........................................................................................ 21 5.3.14 Random access recovery points....................................................................................................... 23 5.3.15 Hinting................................................................................................................................................. 23 ...展开收缩
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