AVCDecoderConfigurationRecord

14496-15

aligned(8) class AVCDecoderConfigurationRecord {

unsigned int(8) configurationVersion = 1;

unsigned int(8) AVCProfileIndication;

unsigned int(8) profile_compatibility;

unsigned int(8) AVCLevelIndication;

bit(6) reserved = ‘111111’b;

unsigned int(2) lengthSizeMinusOne;

bit(3) reserved = ‘111’b;

unsigned int(5) numOfSequenceParameterSets;

for (i=0; i< numOfSequenceParameterSets; i++) {

unsigned int(16) sequenceParameterSetLength ;

bit(8*sequenceParameterSetLength) sequenceParameterSetNALUnit;

}

unsigned int(8) numOfPictureParameterSets;

for (i=0; i< numOfPictureParameterSets; i++) {

unsigned int(16) pictureParameterSetLength;

bit(8*pictureParameterSetLength) pictureParameterSetNALUnit;

}

}

其中 AVCProfileIndication 要查 14496-10

profile_idc

Base Profile 為  66  ( 0x42)

Main Profile 為 77  (0x4D)

Extended Profile 為 88 (0x58)

Level 0x29 為 41 ==> 4.1

http://www.1771.in/flash-how-to-inspect-h264avc-isoiec-14496-15-avcdecoderconfigurationrecord.html

http://stackoverflow.com/questions/11868869/format-of-h-264-decoder-configuration-record-taken-from-mp4