Dahua Villa VTO, User Manual, Page: 12 / 32

8
Parameter Description
standard. The larger the value is, the smoother the video will
be.
Bitrate
Configure the data amount that transmitted in 1 second. You
can select as needed. The larger the value is, the better the
video quality will be.
Sub
Stream
Video Format
Select the video resolution from CIF , WVGA , QVGA , D1 , and
1080P .
Format Rate
Configure the number of frames in 1 second. You can select
from 1 to 25 under PAL , and 1 to 30 under NTSC video
standard. The larger the value is, the smoother the video will
be.
Bitrate
Configure the data amount that transmitted in 1 second. The
larger the value is, the better the video quality will be.
Status
Scene Mode
Adjust the video to adapt to different scenarios. You can
select from Automatic , Sunny , Night and Disabled . It is
Automatic by default.
Day/Night
Mode
You can select from Disabled , Auto , Sunny or Night .
BackLight
Mode
You can select from the following modes:
Disabled : No back light. 
BLC : The camera gets clearer image of the dark areas

on the target when shooting against light.
WDR : The system dims bright areas and compensates 
dark areas to ensure the clarity of all the area.
HLC : The system constrains bright areas and reduces 
halo size to dim the overall brightness.
Light Mode
There are four light modes: NO, NC, Auto, and Scheduled.
Select as needed.
Video Standard Select from PAL or NTSC according to your display device.
Image
Brightness
Changes the value to adjust the picture brightness. The
larger the value is, the brighter the picture will be, and the
smaller the darker. The picture might be hazy if the value is
too large.
Contrast
Changes the contrast of the picture. The larger the value is,
the more the contrast will be between bright and dark areas,
and the smaller the less. If the value is too large, the dark
area would be too dark and bright area easier to get
overexposed. The picture might be hazy if the value is too
small.
Hue
Makes the color deeper or lighter. The default value is made
by the light sensor.
Saturation
Makes the color deeper or lighter. The larger the value is, the
deeper the color will be, and the lower the lighter. Saturation
value does not change image brightness.
Gamma
Changes the picture brightness and improves the picture
dynamic range in a non-linear way. The larger the value is,