HEVC picture type 帧类型详解 [待整理]

NALU type

enum NALUnitType {    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        = 21,    ...}

Random access point picture

• IDR(instantaneous decoder refresh)
• BLA(broken link access)
• CRA(clean random access)

Leading picture

• RADL(random access decodable leading)
• RASL(random access skipped leading)

Temporal sub-layer access picture

• TSA(temporal sublayer access)
• STSA(stepwise temporal sublayer access)

Other

example

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[1]: “2012 Sjoberg - Overview of HEVC High-Level Syntax and Reference Picture Management”
[2]: “2014 《High Efficiency Video Coding (HEVC)：Algorithms and Architectures》2.2.2 VCL NAL Unit Types”