Is there anyway we can have same camera play video side by side?
Normally in my case, when my app have two video window, either one opens and work but does not work side by side
You can have a look at the Video Viewer - Individual Playback sample: https://doc.developer.milestonesys.com/html/index.html?base=samples/componentsamples/videoviewer2playback/readme.html&tree=tree_2.html
It shows how to control live and playback individually for two viewers. It also allows selecting two different cameras, but it can of course also work with using the same in both viewers.