Vivotek IP7138 - Page 98

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98 - User's Manual
C I F,
352x240,
352x288,
4CIF,
704x480,
704x576
s<0~(m-1)>_mpeg4_intraper
iod
250, 500, 1000,
2000, 3000,
4000
4/4 The period of intra frame in milliseconds
s<0~(m-1)>_mpeg4_ratecon
trolmode
cbr, vbr 4/4 cbr, constant bitrate
vbr, fix quality
s<0~(m-1)>_mpeg4_quant 0, 1~5 4/4 quality of video when choosing vbr in
“ratecontrolmode”.
0 is customized manual input setting.
1 is worst quality and 5 is the best
quality.
s<0~(m-1)>_mpeg4_qvalue 1~31 7/4 The specific quality parameter of mpeg4
encoder.
1 is best quality and 31 is the worst
quality.
s<0~(m-1)>_mpeg4_bitrate 1000~4000000 4/4 Set bit rate in bps when choose cbr in
“ratecontrolmode”
s<0~(m-1)>_mpeg4_maxfra
me
1~25,
26~30 (only for
NTSC or 60Hz
CMOS)
4/4 set maximum frame rate in fps (for
MPEG-4)
s<0~(m-1)>_mjpeg_quant 0 ~ 5 4/4 quality of jpeg video.
0 is customized manual input setting.
1 is worst quality and 5 is the best
quality.
s<0~(m-1)>_mjpeg_qvalue 10~200 7/4 The specific quality parameter of jpeg
encoder.
10 is best quality and 200 is the worst
quality.
s<0~(m-1)>_mjpeg_maxfra
me
1~25,
26~30 (only for
NTSC or 60Hz
CMOS)
4/4 set maximum frame rate in fps (for
JPEG)
s<0~(m-1)>_forcei 1 7/6 Force I frame