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how to capture video without showing the camera window or program


how to capture video without showing the camera window or program

By : tcxdawn
Date : November 21 2020, 01:01 AM
should help you out There are two ways to capture videos on Android.
The first way is to use an Intent (a message) to ask applications able to capture video to start and to capture the video for you.
code :


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Programatically video capture a window of a separate program on Windows, Linux or Mac

Programatically video capture a window of a separate program on Windows, Linux or Mac


By : user2912941
Date : March 29 2020, 07:55 AM
wish help you to fix your issue Yes, it's generally possible on all of those OSs; the details are OS-specific, of course, and it's not exactly trivial on any of them. There are commercial or freeware tools for all OSs that do it. On Linux, you could just use, for example, Xvidcap.
Getting the video path of capture video using default camera in android

Getting the video path of capture video using default camera in android


By : user3641490
Date : March 29 2020, 07:55 AM
I wish this helpful for you I am declaring a global variable for String selectedImagePath. On button click I am calling video capture code , Try this instead:
code :
private String videoPath = "";

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if(resultCode==RESULT_OK)
    {

      Uri vid = data.getData();
      videoPath = getRealPathFromURI(vid);
    }


}

public String getRealPathFromURI(Uri contentUri) {
    String[] proj = { MediaStore.Images.Media.DATA };
    Cursor cursor = managedQuery(contentUri, proj, null, null, null);
    int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
    cursor.moveToFirst();
    return cursor.getString(column_index);
}
Openimaj capture and save video from integrated camera or usb camera to hardisk (java)

Openimaj capture and save video from integrated camera or usb camera to hardisk (java)


By : Reza
Date : March 29 2020, 07:55 AM
I hope this helps . You need to use the XuggleVideoWriter class. The following code displays the video content on the screen and writes the content to a file until the escape key is pressed. The format of the video is controlled by the name of the file (i.e. "video.flv" creates an FLV format video).
code :
package org.openimaj.demos.sandbox;

import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.io.IOException;

import javax.swing.SwingUtilities;

import org.openimaj.image.MBFImage;
import org.openimaj.video.Video;
import org.openimaj.video.VideoDisplay;
import org.openimaj.video.VideoDisplayListener;
import org.openimaj.video.capture.VideoCapture;
import org.openimaj.video.xuggle.XuggleVideoWriter;

/**
 * Record the webcam to a file.
 * 
 * @author Jonathon Hare (jsh2@ecs.soton.ac.uk)
 */
public class VideoRecorder extends KeyAdapter implements VideoDisplayListener<MBFImage> {
    private Video<MBFImage> video;
    private VideoDisplay<MBFImage> display;
    private XuggleVideoWriter writer;
    private boolean close = false;

    /**
     * Default constructor
     * @throws IOException
     */
    public VideoRecorder() throws IOException {
        //open webcam
        video = new VideoCapture(320, 240);

        //open display
        display = VideoDisplay.createVideoDisplay(video);

        //open a writer
        writer = new XuggleVideoWriter("video.flv", video.getWidth(), video.getHeight(), 30);

        //set this class to listen to video display events
        display.addVideoListener(this);

        //set this class to listen to keyboard events
        SwingUtilities.getRoot(display.getScreen()).addKeyListener(this);
    }

    @Override
    public void afterUpdate(VideoDisplay<MBFImage> display) {
        //Do nothing
    }

    @Override
    public void beforeUpdate(MBFImage frame) {
        //write a frame 
        if (!close) {
            writer.addFrame(frame);
        }
    }

    @Override
    public void keyPressed(KeyEvent key) {
        //wait for the escape key to be pressed
        close = key.getKeyCode() == KeyEvent.VK_ESCAPE;
    }

    /**
     * Main method
     * @param args ignored
     * @throws IOException 
     */
    public static void main(String[] args) throws IOException {
        new VideoRecorder();
    }
}
C# WPF uEye Camera capture video

C# WPF uEye Camera capture video


By : user3561670
Date : March 29 2020, 07:55 AM
I wish this help you I have program to capture video from camera. Application is in windows form and I want use this code to WPF application but it is not working. I use handle to capture image from uEye camera. In windows form is it
code :
 HwndSource hwndSource = HwndSource.FromVisual(pbMainImage) as HwndSource;
displayHandle = hwndSource.Handle;
InitializeComponent();
Capture video from camera in Mac OS X

Capture video from camera in Mac OS X


By : user3897051
Date : March 29 2020, 07:55 AM
will be helpful for those in need You could use OpenCV for video processing, it's a cross platform image/video processing library: http://opencv.willowgarage.com
Your code would look something like this:
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