Q-See QC40198 - Manual (Page 99)

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QC40198 User Manual
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Parameter Function
Audio/Video For the main stream, recorded file only contains video by default. You
need to put a checkmark here to enable audio function.
For extra stream, you need to put a checkmark to select the video first
and then select the audio if necessary.
Resolution Main stream resolution supports D1/CIF/QCIF.
Extra stream of channel 1 to channel 8 supports QCIF only.
Frame Rate PAL
：1～25f/s；NTSC：1～30f/s
For the 8-ch series combo DVR, you can refer to the following
information:
If the 1-channel resolution is D1 and the frame rate is more than 6f/s,
then the other seven channels (the second channel to the eighth
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 eighth
channel) resolution shall be D1/CIF/QCIF. Right now in D1 resolution
the maximum frame rate is 6f/s for all channels.
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  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.
 The value is null in VBR mode.
 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, hue, saturation and gain.
The value ranges from 0 to 100.Default value is 50. See Figure 7-27.
Cover area
(privacy mask)  Here you can privacy mask the specified video on the monitor.
 One channel supports up to 4 privacy mask zones.
 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  You can enable this function so that system overlays time
information in the video window.
 OSD transparent value ranges from 0 to 255. 0 means completely
transparent.
 You can use the mouse to drag the time tile position.