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GB28181 Protocol Overview The GB/T 28181-2016 standard defines technical requirements for public security video surveillance networking systems. It specifies interconnection structures, transmission protocols, control mechanisms, and security requirements. The protocol uses SIP for signaling and RTP...

HEVC NAL unit header (2 bytes) HEVC encodes each NAL unit with a 16‑bit header laid out as: forbidden_zero_bit: 1 bit (must be 0) nal_unit_type: 6 bits nuh_layer_id: 6 bits nuh_temporal_id_plus1: 3 bits Bit packing across the two bytes (b7 is MSB): byte0: b7=fzb, b6..b1=type, b0=layer_id[5] byte1: b...