rtp h263 mode a b examples

最新推荐文章于 2024-01-13 19:59:33 发布

转载最新推荐文章于 2024-01-13 19:59:33 发布 · 190 阅读

本文详细解析了视频编码中不同模式下帧类型的网络字节序负载头部结构，包括帧模式A的帧内和帧间负载头部，以及帧模式B的帧内和帧间负载头部的具体字段值。

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4.1 Mode A, Intra-frame
Payload header bytes in network byte order:
0x05, 0x60, 0x00, 0x00<2>
The payload header contains fields of the following values:
F=0, P=0, SBIT=0, EBIT=5,
SRC= 3(CIF), I=0 (Intra frame), U=0, S=0, A=0, R=0, DBQ=0, TRB=0,
TR=0<3>
4.2 Mode A, Inter-frame
Payload header bytes in network byte order:
0x02, 0x70, 0x00, 0x00<4>
The payload header contains fields of the following values:
F=0, P=0, SBIT=0, EBIT=2,
SRC= 3(CIF), I=1 (Inter-frame), U=0, S=0, A=0, R=0, DBQ=0, TRB=0,
TR=0<5>
4.3 Mode B, Intra-frame
Payload header bytes in network byte order:
0xBD, 0x67, 0x00, 0x14, 0x00, 0x00, 0x00, 0x00
The payload header contains fields of the following values:
F=1, P=0, SBIT=7, EBIT=5,
SRC= 3(CIF), QUANT=7,
GOBN=0, MBA=5, R=0,
I=0 (Intra-frame), U=0, S=0, A=0,
HMV1=0, VMV1=0, HMV2=0, VMV2=0<6>
4.4 Mode B, Inter-frame
Payload header bytes in network byte order:
0xA1, 0x67, 0x00, 0x18, 0x8F, 0x00, 0x80, 0x00
The payload header contains fields of the following values:
F=1, P=0, SBIT=4, EBIT=1,