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VIVOTEK
148 - User's Manual
input setting.
1 = worst quality, 5 = best
quality.
100 is percentage mode.
s<0~(m-1)>_h264_qvalue 0~51 30 1/4 Manual video quality level input.
(s<0~(m-1)>_h264_quant =
99)
s<0~(m-1)>_h264_qperc
ent
1~100 50 1/4 Manual video quality level input.
(s<0~(m-1)>_h264_quant =
100)
s<0~(m-1)>_h264_bitrate 20000~40000
000
CU8131:
3000000
CU8171:
6000000
1/4 Set bit rate in bps when
choosing cbr in
“ratecontrolmode”.
s<0~(m-1)>_h264_maxv
brbitrate
20000~40000
000
40000000 1/4 Set bit rate in bps when
choosing vbr in
“ratecontrolmode”.
s<0~(m-1)>_h264_maxfr
ame
CU8131: 1~30
CU8171: 1~15
CU8131: 30
CU8171: 15
1/4 Set maximum frame rate in fps
(for h264).
s<0~(m-1)>_h264_profile 0~2 1 1/4 Indicate H264 profiles
0: baseline
1: main profile
2: high profile
s<0~(m-1)>_h264_bitrate
restriction
average,
upperbound
upperbound 1/4 “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_priorit
ypolicy
framerate,ima
gequality
framerate 1/4 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)>_mjpeg_ratec
ontrolmode
cbr, vbr vbr 1/4 cbr, constant bitrate
vbr, fix quality
s<0~(m-1)>_mjpeg_quan 1~5, 3 1/4 Quality of JPEG video.