Dahua Technology LE-L - Manual (Page 106)

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Parameter Function
Audio/Video For the main stream, recorded file only contains video by default. You
need to draw a circle here to enable audio function.
For extra stream, you need to draw a circle to select the video first and
then select the audio if necessary.
Resolution For 16ch series:
Main stream resolution supports D1/CIF/QCIF.
Extra stream of channel 1 to channel 16 support QCIF only.
Frame Rate PAL：1～25f/s；NTSC：1～30f/s
4 HDD Series
For the 8-ch series DVR, you can refer to the following information:
If the 1-channel resolution is D1and the frame rate is more than 6f/s,
then the rest seven channels (the second channel to the eights
channel) resolution shall be CIF or QCIF.
If the 1-channel resolution is D1 and the frame rate is or less than 6f/
then the rest seven channels (the second channel to the eights
channel) resolution shall be D1/CIF/QCIF. Right now in D1 resolution
the max frame rate is 6f/s.
2 HDD Series
If the 1-channel resolution is D1 and the frame rate is more than 6f/s
7f/s in NTSC), the extra stream frame rate shall be below 6f/s (below
7f/s NTSC).
Bit Rate Type
There are two options: VBR and CBR.
Please note, you can set video quality in VBR mode only.
Quality
The value ranges from 1 to 6. The level 6 is the best video quality.
Bit Rate z In CBR, the bit rate here is the max value. In dynamic video, system
needs to low frame rate or video quality to guarantee the value.
z The value is null in VBR mode.
z
Please refer to recommend bit rate for the detailed information.
Recommended
Bit Recommended bit rate value according to the resolution and frame
rate you have set.
Color Setting Here you can set video brightness, contrast ness, hue, saturation and
gain.
The value ranges from 0 to 100.Default value is 50. See Figure 7-27.
Please note, some series devices do not support OSD transparent
setup function.
Cover area
(privacy mask)
z
Here you can privacy mask the specified video in the monitor video.
z
One channel max supports 4 privacy mask zones.
z
The privacy mask includes two options: Never/monitor. Never: It
means do not enable privacy mask function. Monitor: the privacy
mask zone can not be viewed in monitor mode.
Time Title
z
You can enable this function so that system overlays time
information in video window.
z
OSD transparent value ranges from 0 to 255. 0 means complete
transparent.
z
You can use the mouse to drag the time tile position.