VIVOTEK
148 - User's Manual
Bit 4 => Support zoom
operation; 0(not support),
1(support)
Bit 5 => Support focus
operation; 0(not support),
1(support)
text string[64] <blank> 1/4 Enclose caption.
imprinttimestamp <boolean> 0 4/4 Overlay time stamp on video.
exposuremode auto,fixed auto 4/4 Exposure mode
flickerless <boolean> 0 4/4 Avoid flickering on images.
minexposure 1~32000 32000 4/4 Minimum exposure time.
maxexposure 1~32000 30 4/4 Maximum exposure time.
options crop crop 1/4 Video input option: cropping
mode
crop_size <window size>
(WxH)
1952x1944 1/4 Crop width and height.
(1)1952x1944
(2)1920x1080
enablepreview <boolean> 0 1/4 Usage for UI of exposure
settings. Preview settings of
video profile.
s<0~(m-1)>_codectype mjpeg, h264 H264 1/4 Video codec type.
s<0~(m-1)>_resolution Reference
capability_vide
oin_resolution
s0:1920x1920
s1:512x512
s2: 1920x1920
1/4 Video resolution in pixels.
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
<product dependent>
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
s0:framerate
s1:imagequality
s2: imagequality
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
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