Справочник Пользователя для Pelco IV IP
10
C3444M-A (7/09)
CHANGING THE VIDEO FORMAT
This feature allows you to switch between MJPEG and MPEG-4 video formats. If you are using Firefox, this
feature is not available and you will not see the Video Format drop-down box. You must use Internet
Explorer in order to use the MPEG-4 video format.
feature is not available and you will not see the Video Format drop-down box. You must use Internet
Explorer in order to use the MPEG-4 video format.
To change the video format:
1. Open the Video Format drop-down box by clicking the down arrow.
2. Select a video format from the drop-down box.
3. The video in the live video pane is updated. The Image Rate drop-down box or the Quality drop-down
box is displayed to the left depending on the selected video format.
CHANGING THE IMAGE RATE/QUALITY
Depending on the video format selected, the drop-down box to the left changes from Image Rate to
Quality. If MJPEG is selected, the Image Rate drop-down box is displayed. If MPEG-4 is selected (available
only if using Internet Explorer), the Quality drop-down box is displayed.
Quality. If MJPEG is selected, the Image Rate drop-down box is displayed. If MPEG-4 is selected (available
only if using Internet Explorer), the Quality drop-down box is displayed.
MJPEG IMAGE RATE
The available MJPEG image rate settings are 15 ips, 10 ips, 5 ips, 2 ips, 1 ips, or Auto. The default MJPEG
image rate is Auto. The Auto setting allows the system to maintain the highest image rate possible for the
number of users logged on to the device. When set to Auto, the image rate will decrease as the number of
users increases.
image rate is Auto. The Auto setting allows the system to maintain the highest image rate possible for the
number of users logged on to the device. When set to Auto, the image rate will decrease as the number of
users increases.
To change the image rate:
1. Open the Image Rate drop-down box by clicking the down arrow.
2. Select an image rate from the drop-down box.
3. The selected image rate is now listed in the Image Rate box.
NOTES:
•
•
An image rate of 15 ips may not be obtainable due to network bandwidth, network latency, or
processor limitations. To obtain a maximum rate of 30 ips, use the Spectra IV IP dome system as an
Endura Enabled device or with Pelco’s API interface. Refer to Picture Quality in the WS5000
Advanced System Software manual shipped with the Endura system.
processor limitations. To obtain a maximum rate of 30 ips, use the Spectra IV IP dome system as an
Endura Enabled device or with Pelco’s API interface. Refer to Picture Quality in the WS5000
Advanced System Software manual shipped with the Endura system.
•
If you are not using the Auto image rate setting, network and processor bandwidth limitations may
cause the video stream to pause or slow when an increased number of web-interface users connect
to the camera. Decrease the ips of the web-interface video streams to compensate for network/
processor limitations.
cause the video stream to pause or slow when an increased number of web-interface users connect
to the camera. Decrease the ips of the web-interface video streams to compensate for network/
processor limitations.
MPEG-4 IMAGE QUALITY
The following are the available MPEG-4 image quality settings:
HIGH-Multicast (default): 30 ips, 4CIF resolution video stream that can be sent to many users.
LOW-Multicast: 30 ips, CIF resolution video stream that can be sent to many users.
HIGH-Unicast: 30 ips, 4CIF resolution video stream that can be sent to up to five users.
LOW-Unicast: 30 ips, CIF resolution video stream that can be sent to up to five users.