opencv: RTSP streams freeze at version 3.1+ but not at 3.0

System information (version)

OpenCV => 3.1+ including 3.4.1
Operating System / Platform => Windows .Net C# x86
Compiler => Visual Studio 2017

Detailed description

Using an RTSP camera such as “AimCam”, the stream freezes after 10 seconds. It does not freeze when using EMGU 3.0. It does not freeze when run through VLC utility either

Steps to reproduce

             _capture = new VideoCapture("rtsp://192.168.1.254/12345678.mov");
               _capture.ImageGrabbed += processFrame;
               _capture.Start();
…
// processFrame
           _capture.Retrieve(_frame);
            _frameBmp?.Dispose();
               _frameBmp = _frame.Bitmap;

   ```

About this issue

Original URL
State: open
Created 6 years ago
Comments: 17 (10 by maintainers)

Most upvoted comments

On the internet there are instructions for saving the stream to a file (without any re-encoding). Please give it a try, and see if the freeze problem can be re-created when reading from that file.

Based on internet discussions, it is true that ip cameras can behave erratically, such as closing streams unexpectedly or reboot. The only way to investigate would be to ask the ip camera manufacturer to investigate. Otherwise, another venue is to ask in the user forums for that vendor/brand of ip camera.

kinchungwong on May 29, 2018