这个帖子是转贴：因为下列内容，没有再h264的标准上出现，所以要转， 我翻变了下列标准，都没有找到，希望网友告知我，这些内容到底在那个标准文档里面。
我已经翻阅的：
H.264官方中文版.pdf
H.264和MPEG-4视频压缩.pdf
H.264编解码手册.rar
T-REC-H.264-200503-S!!PDF-E.pdf
http://bbs.chinavideo.org/viewthread.php?tid=1986
关于level_idc和Profile_IDC的解释
我在帖子上经常看到问题,现发表在这,大家可以参考一下:Class: Numeric (Integer)
Description: Set bitstream Profile IDC. Default is 88.
Note: Some profiles cannot support certain features. See MPEG-4 AVC for supported features for each profile. Reference software may perform tests for certain features for profile conformance, but it is possible that certain validations are missing. See Annex A of H.264/AVC.
Options:
|
66
|
Baseline
|
77
|
Main
|
88
|
Extended
|
100
|
High (FRExt)
|
110
|
High 10 (FRExt)
|
122
|
High 4:2:2 (FRExt)
|
144
|
High 4:4:4 (FRExt)
|
Class: Numeric (Integer)
Description: Set bitstream Level IDC. Default is 21.
Note: Similar with the ProfileIDC, LevelIDC sets certain restrictions during the encoding process, such as resolution supported, maximum number of references, frame rate etc. See Annex A of H.264/AVC.
Options:
|
10
|
1 (supports only QCIF format and below with 380160 samples/sec)
|
11
|
1.1 (CIF and below. 768000 samples/sec)
|
12
|
1.2 (CIF and below. 1536000 samples/sec)
|
13
|
1.3 (CIF and below. 3041280 samples/sec)
|
20
|
2 (CIF and below. 3041280 samples/sec)
|
21
|
2.1 (Supports HHR formats. Enables Interlace support. 5068800 samples/sec)
|
22
|
2.2 (Supports SD/4CIF formats. Enables Interlace support. 5184000 samples/sec)
|
30
|
3 (Supports SD/4CIF formats. Enables Interlace support. 10368000 samples/sec)
|
31
|
3.1 (Supports 720p HD format. Enables Interlace support. 27648000 samples/sec)
|
32
|
3.2 (Supports SXGA format. Enables Interlace support. 55296000 samples/sec)
|
40
|
4 (Supports 2Kx1K format. Enables Interlace support. 62914560 samples/sec)
|
41
|
4.1 (Supports 2Kx1K format. Enables Interlace support. 62914560 samples/sec)
|
42
|
4.2 (Supports 2Kx1K format. Frame coding only. 125829120 samples/sec)
|
50
|
5 (Supports 3672x1536 format. Frame coding only. 150994944 samples/sec)
|
51
|
5.1 (Supports 4096x2304 format. Frame coding only. 251658240 samples/sec)
|
附件有更多的详细介绍>>>> |
文章来源:
http://www.cnitblog.com/dvb-dvb/archive/2009/08/10/h264level_idc.html