libVLC streaming issue

[Final50]

Hi,I'm developing a video surveillance software using libVLC for the streaming and openCV for the image processing.
Unfortunately some time I noticed that the image processed was the same for hours like the stream was blocked. I solved the problem exploting the image's noises
and rebooting the vlc istance if openCV received the same images up to 5 seconds, but this isn't the optimal solution.
Is there in the library libVLC something that can help me? Thanks guys.