Vivotek PZ7131 - Manual (Page 55)

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User's Manual - 55
Video quality settings for stream 1 / stream 2
Advanced mode
The Network Camera offers two choices of video compression standards for real-time viewing, so you
can choose MPEG-4 or MJPEG for dual streams�
Click the items to display the detailed configurations� You can set up two seperate streams for the
Network Camera for different viewing devices� For example, set a smaller frame size and a lower bit rate
for remote viewing on mobile phones; or set a larger video size and a higher bit rate for live viewing on
web browsers�
If MPEG-4 mode is selected, it is streamed in RTSP protocol� There are four dependent parameters
provided in MPEG-4 mode for video performance adjustment�
■ Frame size
Select the video size� Note that a larger frame size takes up more bandwidth� The frame sizes are
selectable in the following resolutions: 176 x 144, 320 x 240 and 640 x 480�
■ Maximum frame rate
This limits the maximal refresh frame rate per second� Set the frame rate higher for a smoother video
quality�
If the power line frequency is set to 50Hz, the frame rates are selectable at the following rates: 1fps,
2fps, 3fps, 5fps, 8fps, 10fps, 15fps, 20fps and 25fps� If the power line frequency is set to 60Hz, the
frame rates are selectable at the following rates: 1fps, 2fps, 3fps, 5fps, 8fps, 10fps, 15fps, 20fps, 25fps
and 30fps� You can also select Customize, and manually enter a value�