Description:
Stream video source are shown with artefacts for example red pixels in Polywall and in VLC as well.
Reason:
The possible reason is video output module in VLC.
Solution:
Install plugin from Datapath for VLC.
http://datapath.co.uk/datapath-current-downloads/windows/video-wall/imagedp4/utilities/69-acc-vlc-plugin-v1-0-1
Also it is attached.
Enable the new video output and do to forget to enable "keep VLC settings" checkbox in Visualizer settings.