OpenCV, & an Axis Camera (cannot open connection)
I grabbed the latest copy of the JDK, OpenCV, and Eclipse and I want to simply read in the live video stream from an Axis M1013 camera and display it (running windows 7 x64).
I've spent a few hours at it and found plenty of other posts with code they used to connect to the camera but it appears not to work for me.
Here's what I have:
import org.opencv.core.Core;
import org.opencv.highgui.VideoCapture;
public class HelloCV {
public static void main(String[] args) {
System.out.println("Welcome to OpenCV " + Core.VERSION);
System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
VideoCapture capture = new VideoCapture();
capture.open("http://10.25.86.11/mjpg/video.mjpg");
if (capture.isOpened())
System.out.println("Video link open.");
else
System.out.println("Video link not open.");
}
}
But the connection never opens, here's the output:
Welcome to OpenCV 2.4.10.0
Video link not open.
I can use that url in VLC to view the live stream, so I am of the belief that the camera is correctly configured and the network is properly set up. Suggestions greatly appreciated.
UPDATE #1:
I installed python and had the same problem, here's the code:
import cv2
cam = cv2.VideoCapture("http://10.25.86.11/mjpg/video.mjpg")
cam.isOpened()
Returns false.
UPDATE #2:
As an update, I found this chunk of code, and it showed the video feed: http://www.chiefdelphi.com/forums/sh...96&postcount=3
Although that snippet is in python, that's one step closer to solving the mystery here. I still want to know how to use the opencv VideoCapture class so that I can program in Java, suggestions very much appreciated.
UPDATE #3 The solution for Python was on: https://stackoverflow.com/questions/11699298/opencv-2-4-videocapture-not-working-on-windows/24211998#24211998
UPDATE #4 I finally have it working in Java and python. I simply copied opencv/sources/3rdparty/ffmgeg/opencv_ffmpeg_64.dll to c:\windows\system32\opencv_ffmpeg2410_64.dll and ran the java application and it worked as expected~!
(I'm apparently not allowed to add an answer to my own question for another day, so I'll just leave this here in case I forget.)