How to process VLC UDP stream over OpenCV

Question

I was able to receive/view UDP h264 packets through VLC command line (i.e. VLC --network-caching 0 --demux h264 udp://...)

I am planning on processing those frames through OpenCV algorithms. However, I can't seem to find a way to send the VLC frames over to my Python OpenCV script.

Is it possible to pipe VLC stream output to be processed through Numpy in a separate script?

I have previously tried directly streaming to OpenCV by using its VideoCapture function, but for some reason, the video stalls and stops at a distorted black image. For now, it seems like incorporating VLC is the only solution (even though I am not totally sure why VLC works over other methods).

Thank you.

EDIT:

The following is a snippet of the error message on the terminal. It seems like there are problems with the first few frames, but I don't know why the stream works on VLC. From the client, I first sent a default key frame data, and then sent video feed h264 data.

[h264 @ 0x7f9c50020200] top block unavailable for requested intra mode -1
[h264 @ 0x7f9c50020200] error while decoding MB 7 0, bytestream 7208
[h264 @ 0x7f9c50020200] top block unavailable for requested intra mode -1
[h264 @ 0x7f9c50020200] error while decoding MB 8 9, bytestream 7381