VIVOTEK
User's Manual - 153
“ratecontrolmode”.
s<0~(m-1)>_svc_maxframe 1~25,
26~30 (only
for NTSC or
60Hz CMOS)
30
1/4
Set maximum frame rate in
fps (for svc).
s<0~(m-1)>_svc_profile
0~2
1
1/4
Indicate SVC profiles
0: baseline
1: main profile
2: high profile
s<0~(m-1)>_h264_intraperi
od
250, 500,
1000, 2000,
3000, 4000
1000
4/4
Intra frame period in
milliseconds.
s<0~(m-1)>_h264_bitratere
striction
average,
upperbound
average
4/4
“average” indicates the
average bit rate will be equal
to its target bit rate.
“upperbound” indicates the
bit rate will always not
exceed its target bit rate.
s<0~(m-1)>_h264_priorityp
olicy
framerate,
imagequality
framerate
4/4
The policy to apply when the
target bit rate is not
sufficient to satisfy current
encoded conditions.
“framerate” indicates frame
rate first.
“imagequality” indicates
image quality first.
s<0~(m-1)>_h264_ratecont
rolmode
cbr, vbr
vbr
4/4
cbr, constant bitrate
vbr, fix quality
s<0~(m-1)>_h264_quant
1~5
99, 100
3
4/4
Quality of video when
choosing vbr in
“ratecontrolmode”.
99 is the customized manual
input setting.
1 = worst quality, 5 = best
quality.
100 is percentage mode.
s<0~(m-1)>_h264_qvalue
0~51
2
4/4
Manual video quality level
input.
(s<0~(m-1)>_h264_quant
= 99)