Vivotek 4X-SD8111 User Manual page 61

Video quality settings for stream 1 / stream 2
Click the stream item to display the detailed information�
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 resolution 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�
The frame rates are selectable at 1fps, 2fps, 3fps, 5fps, 8fps, 10fps, 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 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�
Advanced Mode
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User's Manual - 61