Trouble with openCV getting a stream using a Hikvision camera

[cudawarped]

@apayan

I found that the matrix frame is empty after the imdecode. How can I fix it? I read in some forums that it usually happens because of the video format but I don’t know which format I need and how to change it.

What format is your source stream in? Is it MJPEG or RTSP?

I am pretty sure all hick cameras support RTSP so I would think it would be easier to just open the stream using the RTSP_URL as

VideoCapture cap(RTSP_URL);
Mat frame; cap.read(frame);

Note:

1. The RTSP_URL url starts rtsp:// see the hickvision docs for info.
2. Check that you can open the RTSP_URL in VLC media player without filling in the username and password pop up box before attempting to open it with VideoCapture.