HEVC/H265帧类型判断及NALU TYPE介绍

1.H265-NALU-Type介绍

NAL_TRAIL_N = 0, 
NAL_TRAIL_R = 1, 
NAL_TSA_N = 2, 
NAL_TSA_R = 3, 
NAL_STSA_N = 4, 
NAL_STSA_R = 5, 
NAL_RADL_N = 6, 
NAL_RADL_R = 7, 
NAL_RASL_N = 8, 
NAL_RASL_R = 9, 
NAL_BLA_W_LP = 16, 
NAL_BLA_W_RADL = 17, 
NAL_BLA_N_LP = 18, 
NAL_IDR_W_RADL = 19, 
NAL_IDR_N_LP = 20, 
NAL_CRA_NUT = 21, 
NAL_VPS = 32, 
NAL_SPS = 33, 
NAL_PPS = 34, 
NAL_AUD = 35, 
NAL_EOS_NUT = 36, 
NAL_EOB_NUT = 37, 
NAL_FD_NUT = 38, 
NAL_SEI_PREFIX = 39, 
NAL_SEI_SUFFIX = 40,

 

2.H264和H265获取帧类型/NALU类型的区别

H264获取方式为 code&0x1f 取低5位，如00 00 00 01 65 则65&0x1f=5表示IDR帧
H265获取方式为 (code & 0x7E)>>1 , 如00 00 00 01 40 则(40&0x7e)>>1 = 32--vps

3.H265中帧类型的介绍GOP等

细节可查看此博客：