User manual
VIVOTEK
168 - User's Manual
textonvideo_fon
tpath 
/usr/share/font/Default.ttf, 
/mnt/flash2/upload.ttf 
4/4  Choose camera default font file 
(/usr/share/font/Default.ttf) or user 
uploaded font 
file(/mnt/flash2/upload.ttf). 
textonvideo_upl
oadfilename 
Depends on the font file name 
uploaded by user 
1/7  Show the uploaded font file name. 
minexposure 
<product
dependent>
<1~32000>, 
<5~32000>, 
<1~8000>, 
<5~8000>, 
etc. 
* Available value is listed in 
"capability_image_c<n>_exposure_
minrange" 
4/4  Minimum exposure time 
1~32000 => 1s ~ 1/32000s 
5~32000 => 1/5s ~ 1/32000s 
1~8000 => 1s ~ 1/8000s 
5~8000 => 1/5s ~ 1/8000s 
etc. 
* Only available when 
"capability_image_c<n>_exposure_m
inrange" != "-" 
* Only valid when 
"piris_mode"=manual or 
"irismode"=fixed 
* Only available when 
"capability_image_c<n>_exposure_ra
ngetype" is "twovalues". 
maxexposure 
<product
dependent>
<1~32000>, 
<5~32000>, 
<1~8000>, 
<5~8000>, 
etc. 
* Available value is listed in 
"capability_image_c<n>_exposure_
maxrange" 
4/4  Maximum exposure time 
1~32000 => 1s ~ 1/32000s 
5~32000 => 1/5s ~ 1/32000s 
1~8000 => 1s ~ 1/8000s 
5~8000 => 1/5s ~ 1/8000s 
etc. 
* This parameter may also restrict 
image frame rate from sensor due to 
sensor generates a frame per 
exposure time. Ex: If this is set to 1/5s 
~ 1/8000s and camera takes 1/5s on 
the night, then sensor only outputs 5 
frame/s. 
* Only available when 
"capability_image_c<n>_exposure_m
axrange" != "-" 










