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Knowledge Base

ViewPoint 8036 connect to VGA auto sent PPT make Zhongxun Quntong video wall server can not decode correctly

Publication Date:  2012-09-25  |   Views:  192  |   Downloads:  0  |   Author:  SU1001522602  |   Document ID:  EKB1000016112


Issue Description

VP8036 version 2.29.7
Networking: 8630MCU+n VP8036+zhongxun Quntong video wall server
Fault phenomenon: make a conference by RMCC, when ViewPoint 8036 connect VGA, it auto send PPT and make Zhongxun video wall server can not decode correctly, the video wall show green screen of death.

Alarm Information


Handling Process

1,Upgrade terminal to the newest version, the fault still alive, so it is not the terminal version problem
2,If the terminal do not connect to VGA, the video wall can decode normally, so the version of the video wall may old.
3,Upgrade the video wall, the fault still alive, so it is not the video wall version problem
4,Examine by the Research and Development, when the video and PPT send as a code stream it is proprietary protocol so it make the video wall can not decode normally.
To avoid the problem:
Turn on the terminal dual stream function, sub stream choose VGA, bandwidth should choose smaller, and terminal will send PPT as sub stream. The Zhongxun Quntong video server can only decode the main stream, if we overlook sub stream, the video wall can show main stream image normally, we can use terminal 8036 to output the sub stream to the video wall, and the fault can be settled.

Root Cause

1,Terminal version problem
2,Video wall can not decode correctly
3,Video wall version too old
4,The code/decode protocol can not interwork.


If we can not resolve a problem directly, we should thing about more replacement.