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Vivotek ST7501 Recording Software Manual

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VIVOTEK - A Leading Provider of Multimedia Communication Solutions
114 - User's Manual
Display Settings
Enable auto stream size: The Auto Stream Size feature dynamically adjusts the stream sizes of video
feeds in order to reduce CPU load and bandwidth consumption. It is often the case that in surveillance
deployments the physical dimensions of monitors, effectiveness of visual stimulis, 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 ST 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 ST monitoring screen,
the ST server automatically requests different video streams.
When the size of view cells is manually expanded, an ST7501 server requests a different stream. This
is called Stream Jump. Shown below are the details of the corresponding stream swaps.
View cell size Stream jump to...
4:3 resolutions
<= 320x240 stream #4
> 320x240 or 640x480 stream #1
16:9 resolutions
<= 384x216 stream #4
> 384x216 or 640x360 stream #1
1:1 (sheye cameras)
<= 384x384 stream #4
> 384x384 or 640x640 stream #1
Facts about Auto Stream Size:
• The LiveClient utility automatically adjust 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 ST7501 server only resizes stream #4.
• If a user disables the Auto Stream Size function late, 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.
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