avertX HD810, Руководство пользователя

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Text Overlay – allows you to select text to be displayed over the video.
Three options are available: Date, Time, and a Custom String (up to 20
alphanumeric characters).
Video Rotation – select the desired rotation to match your installation.
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Normal transmits the image as the camera sees it.
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Flip transmits the image backwards and upside down.
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Mirror transmits a mirror image.
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Rotate 90 degree clockwise/counterclockwise
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180 degree transmits the image upside down.
GOP Settings – The Group of Pictures settings allow you to modify the
frame structure of the video stream. This setting changes the frequency
of the I-frames that occur within the stream of P-frames (2~64).
Increasing this number increases the number of P-frames between each
I-frame; decreasing the file size of the stream, but increasing the risk of
video decoding errors. Decreasing this number decreases the number
of P-Frames between each I-frame; increasing the file size of the
stream, but decreasing the risk of video decoding errors.
We recommend setting the GOP to be approximately twice the frame
rate (e.g.: if the frame rate is 10 IPS, then set the GOP to 20).
H.264 Profile – The H.264 Profile may need to be changed if you are
using a third party recorder that is not capable of decoding H.264 Main
Profile video compression. Select compatible compression type for each
stream if necessary.
Video Compression
You can select an MJPEG / H.264 compression mode on the video
compression page appropriate for your application. You can also select
to display compression inflation on the Live Screen.
MJPEG compression settings:
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High compression, low bitrate, low quality
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Middle compression, default
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Low compression, high bitrate, high quality
H.264 compression settings:
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1024kbps, highest compression, lowest quality
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2048kbps
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4096kbps, middle compression, default
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6144kbps
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8192kbps, low compression, highest quality
CBR Mode Settings:
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The Constant Bit Rate mode allows you to lock in the bit rate of the
H.264 stream. If this setting is not enabled, bit rate may fluctuate
based on available bandwidth.
Video ROI (Region of Interest)
The Video ROI feature allows you to transmit different parts of the
camera image for 2nd, 3rd and 4th streams, instead of showing the full
image. Each stream will display a portion of the image at the full size of
a regular image. This is useful for focusing on details in different areas
of a single camera view.
NOTE: This function is only available when three streams or more is
selected under Video Resolution in Video Format Setting.
Video ROI Settings
1. Select a stream Enable box and Stream ROI Window will be
displayed.
2. To change the size of Stream ROI Window, move the mouse cursor
to the edge of the frame and draw it outward/inward.
3. Moving the mouse to the center of the frame can shift the frame to
the intended location.
Video OCX Protocol
Video OCX Protocol is the Active X control used to display live video in
the web browser. In most cases this will not need to be adjusted, but
changes may be required on certain restricted networks.
For streaming video over the network, you can select:
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RTP over UDP
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RTP over RTSP (TCP)
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RTSP over HTTP
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MJPEG over HTTP