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Administrator settings
Configuration / video
Best performance is produced by the maximum frame rate with best video quality and minimum network bandwidth.
The six factors "Size", "Maximum frame rate", "Video codec type", "Key frame interval", "Fix bit rate" and "Fix
quality" on the video configuration page are correlative to allow for achieving the best performance that is possible.
For high frame rates
To obtain a good visual realtime effect (more than 20 frames/s), the network bandwidth must be sufficiently large. If
the network bandwidth is higher than 1 Mbps, the value for the "Fix bit rate" must be set to 1000Kbps or 1200Kbps
and the "Fix quality" to the highest quality. In the PAL system, the maximum frame rate is 25, and in the NTSC
system, 30 frames per second. If your network bandwidth is more than 384Kbps, you can fix the bit rate according
to your bandwidth and the maximum frame rate to 25 or 30 fps (frames per second). If the pictures in your
environment are changed drastically, you can reduce the maximum frame rate to 20 frames per second to set the
data transmission rate lower. This gives you a better video quality, and the human eye cannot distinguish between
20, 25 and 30 frames per second. If the network bandwidth is less than 384 Kbps, adjust the "Fix bit rate"
according to the bandwidth and try to get the best performance by fine-tuning the "Maximum frame rate". In a
"slow" network, a high frame rate results in unclear, distorted images. Another way to improve quality is to select
"Half" in the "Size" option, or "Half x 2" for a larger view of the pictures. Video quality also depends on the number
of users in the network. Performance can also be affected by a bad connection and by a restriction of the network
burst.
In multi-user environment, the user who has poor network performance will receive only the key frame in MPEG4
format. Try to reduce the key frame interval can improve the frame rate for poor network performance, but the
penalty is the increasing of network traffic. If the server is running on the Internet, select "Improve efficiency in the
multi-user environment" will improve the efficiency in the multi-user environment.
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