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VIVOTEK
User's Manual - 41
This Network Camera provides real-time H.264 and MJPEG compression standards (Dual Codec) for
real-time viewing. If the H.264 mode is selected, the video is streamed via RTSP protocol. There are
several parameters through which you can 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 and for recognizing moving objects in the eld of view.
If the power line frequency is set to 50Hz, the frame rates are selectable at 1fps, 2fps, 3fps, 5fps, 8fps,
10fps, 12fps, 15fps, 20fps, and 25fps. If the power line frequency is set to 60Hz, the frame rates are
selectable at 1fps, 2fps, 3fps, 5fps, 8fps, 10fps, 12fps, 15fps, 20fps, 25fps, and 30fps. You can also
select Customize and manually enter a value.
The frame rate will decrease if you select a higher resolution.
■ Intra frame period
Determine how often for rmware 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.