Two RTSP streams, each on separate VLC player issue

[stepaivo]

Dear All,

we try to develope some app which use libVLC to play live rstp streams from different sources. Sources are NVR from Samsung (Hanwha) - they have some IP cameras. We need two vlc players. They run at the same time.
If I run first rtsp stream from NVR number 1 on vlc player number 1, it is ok. But if I play second rtsp stream from NVR number 2 on vlc player number 2 images from this stream struggles with images on vlc player number 1.

You can see sample situation on this link:
[url]https://youtu.be/6YoDMZWE76g[/url]

When we play both streams from one source (it means NVR number 1 provide two rtsp stream from their two IP cams), it is ok.

Could you help me with that?

Thank you
Ivo