參數(shù)資料
型號: H.261
廠商: Electronic Theatre Controls, Inc.
英文描述: LINE TRANSMISSION OF NON-TELEPHONE SIGNALS
中文描述: 線傳輸非電話信號
文件頁數(shù): 15/31頁
文件大小: 123K
代理商: H.261
12
Recommendation H.261 (03/93)
TABLE 1/H.261
VLC table for macroblock addressing
4.2.3.2 Type information (MTYPE) (Variable length)
Variable length codewords giving information about the macroblock and which data elements are present. Macroblock types,
included elements and VLC words are listed in Table 2.
MTYPE is always included in transmitted macroblocks.
4.2.3.3 Quantizer (MQUANT) (5 bits)
MQUANT is present only if so indicated by MTYPE.
A codeword of 5 bits signifying the quantizer to be used for this and any following blocks in the group of blocks until
overridden by any subsequent MQUANT.
Codewords for MQUANT are the same as for GQUANT.
MBA
Code
MBA
Code
1
1
1
2
1
3
1
4
1
5
1
6
1
7
1
8
1
9
10
11
12
13
14
15
16
1
011
010
0011
0010
0001
0001
0000
0000
0000
0000
0000
0000
0000
0000
0000
1
0
111
110
1011
1010
1001
1000
0111
0110
0101
11
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
MBA stuffing
Start code
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0101
0101
0101
0100
0100
0100
0100
0100
0100
0011
0011
0011
0011
0011
0011
0011
0011
0001
0000
10
01
00
11
10
011
010
001
000
111
110
101
100
011
010
001
000
111
0000
0001
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