How can I register two of live video with taken by ipcamera?

Hi, now I'm trying to register two of live video with taken by ipcamera..

This is my reference

• about ipcam - https://kr.mathworks.com/help/supportpkg/ipcamera/ug/snapshot.html
• about registering - https://kr.mathworks.com/help/images/registering-an-aerial-photo-to-an-orthophoto.html

Main problem

• Class 'ipcam' can't read with object, like 'videoReader' or 'imread'
• That can only capture with 'snapshot' as image with type of 'uint', and it can register pictures. but if i register videos, it can't register because it's a type of ipcam
• if i use snapshot as part of video, it can't display consecutive.

Want to know

• how to display with ipcam with 'videoReader', or display live video of ipcam without using 'preview'
• how to register with two of live video of ipcam

Conclusionally, I'll try to human detecting with multiple ipcam

• https://kr.mathworks.com/help/vision/ug/motion-based-multiple-object-tracking.html

Please help me with giving other reference or example