GBO Technology S1080 Series, Руководство пользователя

Страница: 50 / 103

U/M-2013-1000
Revision B
S1080 User’s Manual
Page 40 Company Proprietary August 22, 2013
8.4 S
TREAM
1, 2,
AND
3 S
CREENS
The Stream 1 and Stream 3 screens are the same. The Stream 2 screen does not have either a Bit Rate
or a Rate Control drop-down list, but has a Quality Factor drop-down list. Refer to APPENDIX A,
Definitions , for more information on these terms.
Figure 8.2 Stream Screens
8.4.1 Frame Rate
Select the required frame rate for JPEG, MPEG4 and H.264. This selection changes, depending on the
selected Codec Combo. Options include 1, 8, 15, 24, or 30 frames per second.
8.4.2 Bit Rate
Enter the required bit-rate for both the MPEG4 Setting and the H.264 Setting. Bit-rate values range
from 64 to 12000 for Stream 1, and 64 to 8000 for Stream 2/Stream 3.
8.4.3 Rate Control
Select the required option from the drop-down list, as described in the table below. Refer to
APPENDIX A, Definitions , for more information.
Table 8-6 Rate Control Options
Rate Control Options
OFF
This switches off the rate control and encodes the frame in constant QP mode for all MBs (Macro-
Blocks)

MPEG4 is encoded with QP = 4

H264 is encoded with QP = 28
VBR Variable Bitrate (max_delay set is for 1000msec)
CBR
Constant Bitrate. This has frame skips to maintain bitrate with specified VBV buffer (max_delay set
is for 1000 msec).
Streams 1 and 3 Stream 2