Hikvision DS-2CD2D21G0/M-D/NF User Manual - Page 81

Configuring ROI Encoding

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DS-2CD2D21G0/M-D/NF User Manual Figure 77, Audio Settings 2. Configure the following settings: NOTE: Audio settings vary by camera model. • Audio Encoding: G.722.1, G.711 ulaw, G.711alaw, G.726, MP2L2 and PCM are selectable. For MP2L2, the Sampling Rate and Audio Stream Bitrate are configurable. For PCM, the Sampling Rate can be set. • Audio Input: MicIn and LineIn are selectable for the connected microphone and pickup respectively. • Input Volume: 0-100 adjustable. • Environmental Noise Filter: Set it as OFF or ON. When the function is enabled, the noise in the environment can be filtered to some extent. 3. Click Save to save the settings. Configuring ROI Encoding Purpose: ROI (Region of Interest) encoding helps to discriminate the ROI and background information in video compression, which means, the technology assigns more encoding resource to the region of interest, thus to increase the quality of the ROI whereas the background information is less focused. NOTE: ROI function varies by camera model. UM DS-2CD2D21G0/M-D/NF 020319NA 80

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DS-2CD2D21G0/M-D/NF User Manual
UM DS-2CD2D21G0/M-D/NF 020319NA
80
Figure 77, Audio Settings
2.
Configure the following settings:
NOTE:
Audio settings vary by camera model.
•
Audio Encoding:
G.722.1, G.711 ulaw, G.711alaw, G.726, MP2L2 and PCM are selectable. For MP2L2, the
Sampling Rate and Audio Stream Bitrate are configurable. For PCM, the Sampling Rate can be set.
•
Audio Input:
MicIn and LineIn are selectable for the connected microphone and pickup respectively.
•
Input Volume
: 0-100 adjustable.
•
Environmental Noise Filter
: Set it as
OFF
or
ON
. When the function is enabled, the noise in the environment can
be filtered to some extent.
3.
Click
Save
to save the settings.
Configuring ROI Encoding
Purpose:
ROI (Region of Interest) encoding helps to discriminate the ROI and background information in video compression, which
means, the technology assigns more encoding resource to the region of interest, thus to increase the quality of the ROI
whereas the background information is less focused.
NOTE:
ROI function varies by camera model.