Instruction Manual

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SUB – STREAM SETUP:
The SUB-STREAM SETUP Menu allows the User to achieve a balance between speed of data transmission
and the video resolution (clarity). The uploading (transmission) of the video files from the MDVR to another
location by WIFI or 3G/4G cellular communication networks is limited by Bandwidth. Sub-stream settings
refer to the choices being made when uploading the MDVR recorded files to another location such as to the
IVMS Server over 3G/4G. The User must choose a balance of speed and resolution. Higher resolution files
require a longer transmission time yet yield clearer video. Whereas faster transfer rates are a result of
sending lower resolution video files quickly, but yield less detailed videos for replay. In some cases the
larger file size will overwhelm the systems available bandwidth and result in intermittent, slow or error laden
file transfers. As shown in the chart below the sub-stream settings are related to whether the video displayed
on the IVMS platform is clear and smooth. Of course, the most important factor for network transmission is
the up and down rate of the local network broadband. Video resolution can be set as CIF and QCIF.
The corresponding relationship between bit rate setting and the frame rate changing is shown as below, the
bit rate set here is the transmission rate of a channel.
The frame rate setting is changed according to the corresponding bit rate change; it can be set as bit rate
128,frame rate 8 in default. This setting is the current one that can guarantee fluency as well as a certain
resolution when the cellular network transmits audio and video,but you can set this based on your own
network situation, if under good enough network bandwidth, it can be set higher frame rate and bit rate and it
can also be set automatically.
Action Bar Keys (Select, then press ENTER):
SAVE
To save and activate the new settings
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