Dahua HDCVI series, User Manual

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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.
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Frame rate: It ranges from 1f/s to 25f/s in NTSC mode and 1f/s to 30f/s in PAL mode.
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Bit rate type: System supports two types: CBR and VBR. In VBR mode, you can set
video quality.
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Quality: There are six levels ranging from 1 to 6. The sixth level has the highest image
quality.
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Video/audio: You can enable or disable the video/audio.
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Audio format: Please select from the dropdown list. There are three options:
G711a/G711u/PCM.
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Audio source: Please select from the dropdown list. There are two options:
local/HDCVI. For local mode, the audio signal is from the Audio In port. For HDCVI
mode, the audio signal is from the coaxial cable of the camera.
Figure 4-74
4.11.1.3.2 Snapshot
Here you can set snapshot mode, picture size, quality and frequency. See Figure 4-75.
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Snapshot mode: There are two modes: regular and trigger. If you set timing mode,
you need to set snapshot frequency. If you set trigger snapshot, you need to set
snapshot activation operation.
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Image size: Here you can set snapshot picture size.
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Image quality: Here you can set snapshot quality. The value ranges from 1 to 6.
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Interval: It is for you to set timing (schedule) snapshot interval.