关于level_idc和Profile_IDC的解释

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2010-01-21 15:51:40| 分类：windows mobile开 |字号订阅

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:66Baseline77Main88Extended100High (FRExt)110High 10 (FRExt)122High 4:2:2 (FRExt)144High 4:4:4 (FRExt)

Class: Numeric (Integer)

Description: Set bitstream Level IDC. Default is 51.

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:101 (supports only QCIF format and below with 380160 samples/sec)111.1 (CIF and below. 768000 samples/sec)121.2 (CIF and below. 1536000 samples/sec)131.3 (CIF and below. 3041280 samples/sec)202 (CIF and below. 3041280 samples/sec)212.1 (Supports HHR formats. Enables Interlace support. 5068800 samples/sec)222.2 (Supports SD/4CIF formats. Enables Interlace support. 5184000 samples/sec)303 (Supports SD/4CIF formats. Enables Interlace support. 10368000 samples/sec)313.1 (Supports 720p HD format. Enables Interlace support. 27648000 samples/sec)323.2 (Supports SXGA format. Enables Interlace support. 55296000 samples/sec)404 (Supports 2Kx1K format. Enables Interlace support. 62914560 samples/sec)414.1 (Supports 2Kx1K format. Enables Interlace support. 62914560 samples/sec)424.2 (Supports 2Kx1K format. Frame coding only. 125829120 samples/sec)505 (Supports 3672x1536 format. Frame coding only. 150994944 samples/sec)515.1 (Supports 4096x2304 format. Frame coding only. 251658240 samples/sec)