User manual

www.acti.com
Mobile Server
27
Optimize the Performance of Client
Mobile Server makes remote-monitoring possible as soon as you install and configure it on
your NVR server computer. With normal network connectivity, you may enjoy the convenient
functions it provides and satisfactory video streaming quality. However, you may experience
certain unstable video display performance, for example, certain channels take longer to
display the images upon logging in, or the live view streaming is not smooth enough. Please
consider the following factors that are possibly influencing the performance of live view result:
How fast the Mobile server can provide the output image
Mobile Server would transform the original image to lighter format before outputting it to the
mobile client (browser or MobileGo).However, the higher compression level or resolution the
original image comes with, the more CPU usage is required to process image-transforming,
and the longer processing time is needed to generate the output image before it can be
delivered.
Network quality
This is the major factor to affect the display result. With more bandwidth of the network
connection, your mobile client gets the images sooner and the streaming gets smoother.
There are several tips you may try to get better live view result as possible, given that your
network condition is not easy to control:
1. To preserve more CPU power for image-transforming to generate the images faster
and more efficiently, you may make use of the dual-streaming devices on your site.
Mobile Server supports dual-streaming devices and would recognize Stream 1 output
from video source. Simply use lower video format for Stream 1 for Live view (640X480
resolution is recommended for MobileGo! client; 320X240 for browser client), while
Stream 2 uses better format for the purpose of recording. Thus it may take shorter for
the mobile device to obtain the image data and display the view.
2. As video stream with better compression level will consume more CPU usage for
Mobile Server or Standalone NVR to decode the image, you may try using lower
compression levels such as MPEG-4 or MJPEG for high resolution video.