238
Code stream
type
It includes main stream, motion stream and alarm stream. You
can select different encode frame rates form different recorded
events.
System supports active control frame function (ACF). It allows
you to record in different frame rates.
For example, you can use high frame rate to record important
events, record scheduled event in lower frame rate and it allows
you to set different frame rates for motion detection record and
alarm record.
Smart Codec
Select Start from the dropdown list to enable smart codec
function. The DVR can auto reduce the video bit stream of the
non-important surveillance object to save the storage space.
Compression
Compression: System supports H.264H, H.264, H.264B, and
MJPEG.
H.264H: It is the High Profile compression algorithm. It has
the high encode compression rate. It can achieve high
quality encode at low bit stream. Usually we recommend
this type.
H.264 is the general compression algorithm.
H.264B is the Baseline algorithm. Its compression rate is
low. For the same video quality, it has high bit stream
requirements.
Resolution
For analog channel, system supports various resolutions, you
can select from the dropdown list. Please note the option may
vary due to different series. For digital channel, the resolution
here refers to the capability of the network camera.
Frame Rate
PAL
：
1
～
25f/s
；
NTSC
：
1
～
30f/s.
Bit Rate
Main stream: You can set bit rate here to change video
quality. The large the bit rate is , the better the quality is.
Please refer to recommend bit rate for the detailed
information.
Extra stream: 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.
Reference bit
rate
Recommended bit rate value according to the resolution and
frame rate you have set.
I Frame
Here you can set the P frame amount between two I frames. The
value ranges from 1 to 150. Default value is 50.
Recommended value is frame rate *2.
Audio source
Please select from the dropdown list. There are two options:
Normal/HDCVI. In the normal mode, the audio signal comes
from the Audio In. In the HDCVI mode, the audio signal comes
from the coaxial cable of the camera.
Содержание HDCVI series
Страница 1: ...Dahua HDCVI Standalone DVR User s Manual Dahua HDCVI Standalone DVR User s Manual V1 6 1 ...
Страница 172: ...162 Figure 4 104 Figure 4 105 ...
Страница 173: ...163 Figure 4 106 Figure 4 107 ...
Страница 189: ...179 Figure 4 124 Figure 4 125 ...
Страница 190: ...180 Figure 4 126 Figure 4 127 ...
Страница 191: ...181 Figure 4 128 Figure 4 129 ...
Страница 194: ...184 Figure 4 133 Figure 4 134 ...
Страница 201: ...191 Figure 4 144 Figure 4 145 4 11 4 1 2 2Trigger Snapshot ...
Страница 203: ...193 Figure 4 147 Figure 4 148 4 11 4 1 2 3Priority ...
Страница 220: ...210 Figure 4 169 For digital channel the interface is shown as below See Figure 4 170 Figure 4 170 4 11 5 6 ATM POS ...
Страница 234: ...224 Figure 4 187 ...
Страница 252: ...242 Figure 5 26 5 8 2 Network 5 8 2 1 TCP IP The single Ethernet port interface is shown as in Figure 5 27 Figure 5 27 ...
Страница 269: ...259 Figure 5 55 Figure 5 56 ...
Страница 282: ...272 Figure 5 71 Figure 5 72 ...
Страница 289: ...279 Figure 5 81 Figure 5 82 Figure 5 83 Please refer to the following sheet for detailed information ...
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