read video frame by frame from hard drive giving error using opencv in java

Question

1.00/5 (1 vote)

See more:

XML

I want to read video from drive frame by frame. I am using opencv in java.

<pre lang="java">VideoCapture camera=new VideoCapture("video path");// giving error on this line.

Mat frame = new Mat();

while(true){
    if (camera.read(frame)){
        Highgui.imwrite("F:/camera.jpg", frame);
        break;
    }
    else
        break;</pre>

the above code is giving this error

Exception in thread "main" java.lang.Error: Unresolved compilation problem: The constructor VideoCapture(String) is undefined

Posted 17-Sep-14 11:07am

Member 11090261

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Sergey Alexandrovich Kryukov · Answer 1 · 2014-09-17T12:11:00

Solution 1

There is nothing high-tech in this problem. You are trying to use non-existing VideoCapture constructor. Wasn't that quite obvious from the error message? You are trying to pass some mysterious argument of the string type, "video path", hard to understand for what purpose.

If you look at the original OpenCV documentation, you will find only two constructors, one without parameters, another one expecting int parameter:
http://docs.opencv.org/java/org/opencv/highgui/VideoCapture.html[^].

That's all.

—SA

Posted 17-Sep-14 12:11pm

Sergey Alexandrovich Kryukov

Comments

Member 11090261 18-Sep-14 1:45am

Then how i can read video frame by frame from my hard drive. i am using opencv in java. any solution.

Sergey Alexandrovich Kryukov 18-Sep-14 2:38am

I found where your bug is; the rest of it is a different question. Are you going to accept this answer formally?
Now, usually, video is not read frame from frame. Are those the frames without video compression? If so, why?
—SA