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• Android Mobile Cam as a IP Camera [Xamarin]

  3 février 2018, par undefined

  I have a requirement where I need to use my android device as an IP Camera. I have a specific device X that listens to a stream through an URI (e.g. http://10.20.20.20:2010/cam) where 10.20.20.20 is the IP Address of my mobile device.

  My target is to be able to start a server on the specified URI and as soon as I start the camera using my application, the device X should start receiving the feed. I searched for FFMPEG but could not find some examples.

  I have to develop this using xamarin.

  Any pointers will be helpful.

• Access video stream from Cloud IP Camera

  13 février 2018, par Ferguson

  I have bought a new "cloud IP" camera and I don’t know If I can access video stream over RTSP or some other protocol from local computer ?

  I would like to stream a video over VLC or FFMpeg program.

  The model of camera is : CIPC-GC13H

  

  thank you for any info

• Read h264 stream from an IP camera

  13 juillet 2015, par João Neves

  Currently, I am trying to use opencv to read a video from my Canon VB-H710F camera.

  For this purpose I tried two different solutions :

  SOLUTION 1 : Read the stream from rtsp address

   VideoCapture cam ("rtsp://root:camera@10.0.4.127/stream/profile1=u");
  
  
  
   while(true)
  
    cam >> frame;

  In this case I am using opencv to directly read from a stream encoded with in H264 (profile1), however this yields the same problem reported here http://answers.opencv.org/question/34012/ip-camera-h264-error-while-decoding/
  As suggested in the previous question, I tried to disable FFMPEG support in opencv installation, which solved the h264 decoding errors but raised other problem.
  When accessing the stream with opencv, supported by gstreame, there is always a large delay associated.
  With this solution I achieve 15 FPS but I have a delay of 5 seconds, which is not acceptable considering that I need a real time application.

  SOLUTION 2 : Read the frames from http address
  while(true)
  
  startTime=System.currentTimeMillis() ;

          URL url = new URL("h t t p://[IP]/-wvhttp-01-/image.cgi");
  
          URLConnection con = url.openConnection();
  
          BufferedImage image = ImageIO.read(con.getInputStream());   
  
          showImage(image);
  
          estimatedTime=System.currentTimeMillis()-startTime;
  
          System.out.println(estimatedTime);
  
          Thread.sleep(5);
  
  }

  This strategy simply grabs the frame from the url that the camera provides. The code is in Java but the results are the same in C++ with the curl library.
  This solution avoids the delay of the first solution however it takes little more than 100 ms to grab each frame, which means that I can only achieve on average 10 FPS.

  I would like to know how can I read the video using c++ or another library developed in c++ ?