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Configuration and Operation
Following are descriptions of different video rotate types.
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Normal video – The image appears as it is viewed.
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Flip video – The image is reversed along its horizontal axis.
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Mirror video – The image is reversed along its vertical axis.
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90 degree clockwise – The image rotates 90° clockwise (to the right).
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180 degree rotate – The image rotates 180° counter-clockwise (to the left).
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90 degree counterclockwise – The image rotates 90° counter-clockwise (to the left).
Click Save to confirm the setting.
9.4.1.4
GOV Settings
You can set the GOV length to determine the frame structure (I-frames and P-frames) in a video
stream for saving bandwidth. The setting range is from 2 to 64. A longer GOV means decreasing the
frequency of I-frames. Click Save to confirm the GOV setting.
9.4.1.5
H.264 Profile
The H.264 standard defines 21 sets of capabilities. These are referred to as profiles and they target
specific classes of applications. In the security industry, the most common are as follows:
Baseline Profile (BP)
·
Primarily for low-cost applications that require additional data loss robustness, Baseline
Profile is used in some videoconferencing and mobile applications. This is the most common
profile used in IP security cameras due to the low computational cost of processing the
video using this profile.
Main Profile (MP)
·
This profile provides improved picture quality at reduced bandwidths and storage costs and
is becoming more common as the camera processors (DSPs) become more able to handle
the processing load. Main Profile can save 10-30% over Baseline.
High Profile (HP)
·
High Profile is the primary profile for HD broadcast applications. It can save 10-30% of the
storage cost over Main Profile. However, it may also increase video latency, depending on
the stream structure. Quasar models default to the Main Profile to provide the best trade-off
between storage size and video latency.
Click Save to confirm the settings.
104
CP-3211/CP-4221 User and Installation Guide
September 12, 2016
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