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VIVOTEK - A Leading Provider of Multimedia Communication Solutions
134 - User's Manual
Display Settings
Enable auto stream size: The Auto Stream Size feature dynamically adjusts the stream sizes of video
feeds from network cameras in order to reduce CPU load and bandwidth consumption.
It is often the case that in surveillance deployments the physical dimensions of monitors, the
effectiveness of visual stimulus, and the operators' regions of interest can all be very limited.
Streaming large-size videos at all times will be a waste of bandwidth and system computing power.
CIF and VGA size videos are usually sufficient for the operators of a surveillance software.
When enabled, your LiveClient station automatically requests smaller-size streams as video feeds (any
from streams #1 ~ #4) from the network cameras. For example, the frame size of video stream #4 will
be reduced to 320x240 (CIF). Depending on the actual size of view cells on the LiveClient monitoring
screen, the server automatically requests different video streams.
When the size of view cells is manually expanded, a server requests a different stream. This is called
Stream Jump. Shown below are the details of the corresponding stream jumps.
View cell size Stream jump to...
4:3 resolutions
<= 320x240 stream #4 (CIF)
> 320x240 or 640x480 stream #1
16:9 resolutions
<= 384x216 stream #4 (CIF)
> 384x216 or 640x360 stream #1
1:1 (sheye cameras)
<= 384x384 stream #4 (CIF)
> 384x384 or 640x640 stream #1
Facts about Auto Stream Size:
• The LiveClient utility automatically adjusts stream selection according to the size of view cells, no
user's configuration is required.
• The frame size of stream #1 is user-configurable. The server only resizes stream #4.
• If a user disables the Auto Stream Size function later, the frame size of stream #4 will not be
restored to the previous configuration.
• Stream jump takes place on the display of all connected cameras once the function is enabled.
• The Auto Stream Size function does not apply to the Matrix view.
• If users configured a region of interest before the Auto Stream Size function is applied, e.g., via
the ePTZ control, the view cell might display a different live view.
Enable de-interlace function: Select this option if your connected device does not support de-interlace
function. For example: VS7100.
Enable Instant Replay on video cell: Here you can change the duration of a playback that happened
immediately before a user utilizes the instant playback function.