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VIVOTEK
User's Manual - 79
This Network Camera offers real-time H�264, MPEG-4 and MJEPG compression standards (Triple
Codec) for real-time viewing�
If H.264 / MPEG-4 mode is selected, the video is streamed via RTSP protocol� There are four parameters
for you to adjust the video performance:
■ Frame size
You can set up different video resolutions for different viewing devices� For example, set a smaller
frame size and lower bit rate for remote viewing on mobile phones and a larger video size and a higher
bit rate for live viewing on web browsers� Note that a larger frame size takes up more bandwidth�
■ Maximum frame rate
This limits the maximum refresh frame rate per second� Set the frame rate higher for smoother video
quality
■ Intra frame period
Determine how often to plant an I frame� The shorter the duration, the more likely you will get better
video quality, but at the cost of higher network bandwidth consumption� Select the intra frame
period from the following durations: 1/4 second, 1/2 second, 1 second, 2 seconds, 3 seconds, and 4
seconds�
■ Video quality
A complex scene generally produces a larger le size, meaning that higher bandwidth will be needed
for data transmission. Therefore, if Constant bit rate is selected, the bandwidth utilization is xed at
a selected level, resulting in mutable video quality performance� The bit rates are selectable at the
following rates: 20Kbps, 30Kbps, 40Kbps, 50Kbps, 64Kbps, 128Kbps, 256Kbps, 512Kbps, 768Kbps,
1Mbps, 2Mbps, 3Mbps, 4Mbps, 6Mbps, and 8Mbps� You can also select Customize and manually
enter a value�
On the other hand, if Fixed quality is selected, all frames are transmitted with the same quality;
bandwidth utilization is therefore unpredictable� The video quality can be adjusted to the following
settings: Medium, Standard, Good, Detailed, and Excellent. You can also select Customize and
manually enter a value�
79


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Vivotek SD8322E Dome Quick start guide - English - 9 pages

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