siqueiros

Hello everybody! For some time start to using a couple of hik ds2cd2432 ip cameras and everything going well. Usually seeing live video translation by rtsp with VLC program. Then decide to buy and use NVR for archiving and was buy a DS-7604NI-SE/P. Now when i try to open network RTSP stream with VLC the video translation starting but work just about 2 or 3 minutes then video is stop and freeze, but sounds continue to translate. Why this may happen, does anybody know? Thanks.