Dahua ITC231-RF1A-IR - Page 72

Parameter
Function
Sub Stream
Enable
Control the secondary stream is turned on. The default is not open.
Code Stream
Type
General stream.
Encode Mode
Currently only supports H.264B, H.264M, H.264H, MJPEG, and H.265.
Resolution
Currently it supports up to UXGA, 720P, D1, CIF.
Note:
Sub stream cannot exceed main stream.
FPS
Different maximum resolution supported by the frame rate.
Bit Rate Type
Including fixed stream or variable code stream. Only in VBR mode can be
set image quality at a fixed stream mode is not set quality.
Quality
Under VBR, you can set quality, 6 levels available.
Bit Rate
 In the fixed stream mode, which is the upper limit value stream stream.
Under dynamic images, if necessary by reducing the frame rate and
image quality will be to ensure that the stream does not exceed the
value.
 In VBR mode, this value has no meaning.
 Refer to "stream reference value" - the value stream to provide the
best reference range.
I Frame Interval
Number of P frames between two I-frames, the frame rate due to changes
in the scope of change, a maximum of 150, it is recommended to the frame
rate of 2 times.
6.5.2.2.2 Snapshot
The snapshot interface is shown as in Figure 6-73 Relay-out.
Select Setting>Camera>Video>Snapshot.