2 webcam different pictureBox RRS feed

  • Question

  • How to correctly address the video stream for simultaneous output in two PictureBox?
    A code has now been generated for displaying images from webcams on a form (window). Required with only one webcam

    get an image in one picturebox, but not in the other, then vice versa by manually switching the number

    videoDevices from 0 to 1 and vice versa ("0" is the number of the connected camera).

    videoSource = new VideoCaptureDevice (videoDevices [0] .MonikerString);

    videoSource2 = new VideoCaptureDevice (videoDevices [1] .MonikerString);

    When "0" on videoDevices of both sources, there is an image from the camera on one picturebox, but not on the other. How to specify a video stream,

    so that when "0" there was an image from the camera on both picturebox (it is known that the attachment to the void videoSource_NewFrame method

    this.pictureBox2.Image = (Image) eventArgs.Frame.Clone (); allows you to incorrectly solve this problem)

    When "0" on videoDevices of the same source and "1" on the videoDevices of the other source, there are already no pictures on both picturebox

    cameras. Why? How to correctly address the video stream so that there is an image in pictureBox1.

    I give the code:

    using System; //example_professorweb
    using System.Collections.Generic;
    using System.Linq;
    using System.Threading.Tasks;
    using System.Windows.Forms;
    using System.ComponentModel;
    using System.Data;
    using System.Drawing;
    using System.Text;
    using AForge.Video;
    using AForge.Video.DirectShow;
    using System.Threading;

        public class Form1 : Form
    private FilterInfoCollection videoDevices = null;

    private VideoCaptureDevice videoSource = null;
    private VideoCaptureDevice videoSource2 = null;
    Bitmap image1;
    Bitmap image2;

            public Form1()

    private void Form1_Load(object sender, EventArgs e)
    videoDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);

    videoSource = new VideoCaptureDevice(videoDevices[1].MonikerString);
    videoSource.NewFrame += new NewFrameEventHandler(videoSource_NewFrame);
    videoSource2 = new VideoCaptureDevice(videoDevices[0].MonikerString);
    videoSource2.NewFrame += new NewFrameEventHandler(videoSource2_NewFrame);

    void videoSource_NewFrame(object sender, NewFrameEventArgs eventArgs)
    this.pictureBox1.Image = (Image)eventArgs.Frame.Clone();

    void videoSource2_NewFrame(object sender, NewFrameEventArgs eventArgs)
    this.pictureBox2.Image = (Image)eventArgs.Frame.Clone();

    private void InitializeComponent()
                this.pictureBox1 = new System.Windows.Forms.PictureBox();
    this.pictureBox2 = new System.Windows.Forms.PictureBox();
                // pictureBox1 pic
    this.pictureBox1.BackColor = System.Drawing.Color.Gainsboro;
    this.pictureBox1.Location = new System.Drawing.Point(100, 300);
                this.pictureBox1.Name = "pictureBox1";
                this.pictureBox1.Size = new System.Drawing.Size(294, 220);
                this.pictureBox1.SizeMode = System.Windows.Forms.PictureBoxSizeMode.StretchImage;
                this.pictureBox1.TabIndex = 0;
                this.pictureBox1.TabStop = false;
    image1 = new Bitmap(@"d:\1.jpg");
    pictureBox1.Image = (Image)image1;
    // pictureBox2 pic2
    this.pictureBox2.BackColor = System.Drawing.Color.Gainsboro;
    this.pictureBox2.Location = new System.Drawing.Point(100, 600);
                this.pictureBox2.Name = "pictureBox2";
                this.pictureBox2.Size = new System.Drawing.Size(294, 220);
                this.pictureBox2.SizeMode = System.Windows.Forms.PictureBoxSizeMode.StretchImage;
                this.pictureBox2.TabIndex = 0;
                this.pictureBox2.TabStop = false;
    image2 = new Bitmap(@"d:\2.jpg");
    pictureBox2.Image = (Image)image2;
                // Form1 
                this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
                this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
                this.ClientSize = new System.Drawing.Size(600, 900);
                this.Name = "Form2";
                this.Text = "soft1";
                this.Load += new System.EventHandler(this.Form1_Load);

    this.firstLabel = new System.Windows.Forms.Label();
    this.secondLabel = new System.Windows.Forms.Label();
    this.labelsToolTip = new System.Windows.Forms.ToolTip(new System.ComponentModel.Container());
    // firstLabel label pic1
    this.firstLabel.AutoSize = true;
    this.firstLabel.BorderStyle = System.Windows.Forms.BorderStyle.None;
    this.firstLabel.Font = new System.Drawing.Font("Microsoft Sans Serif", 10F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
    this.firstLabel.Location = new System.Drawing.Point(160, 280);
    this.firstLabel.Name = "firstLabel";
    this.firstLabel.Size = new System.Drawing.Size(92, 18);
    this.firstLabel.TabIndex = 0;
    this.firstLabel.Text = "pic1";
    this.labelsToolTip.SetToolTip(this.firstLabel, "First Label");
    // secondLabel label pic2)
    this.secondLabel.AutoSize = true;
    this.secondLabel.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
    this.secondLabel.Font = new System.Drawing.Font("Microsoft Sans Serif", 10F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
    this.secondLabel.Location = new System.Drawing.Point(12, 69);
    this.secondLabel.Name = "secondLabel";
    this.secondLabel.Size = new System.Drawing.Size(133, 18);
    this.secondLabel.TabIndex = 1;
    this.secondLabel.Tag = "";
    this.secondLabel.Text = "This is another Label.";
    this.labelsToolTip.SetToolTip(this.secondLabel, "Second Label");
    // ToolTipExampleForm http://www.java2s.com/Code/CSharp/GUI-Windows-Form/AddTooltipsforLabel.htm


    private System.Windows.Forms.PictureBox pictureBox1;
    private System.Windows.Forms.PictureBox pictureBox2;
    private System.Windows.Forms.Label firstLabel;
    private System.Windows.Forms.Label secondLabel;
    private System.Windows.Forms.ToolTip labelsToolTip;

    static class Program
            static void Main()
            { //http://csharp-me.blogspot.com/2014/02/make-simple-webcam-in-c.html
                Application.Run(new Form1());


    • Moved by CoolDadTx Friday, November 9, 2018 3:10 PM Winforms related
    • Moved by Stanly Fan Monday, November 12, 2018 5:54 AM
    Friday, November 9, 2018 1:28 PM

All replies

  • Hi,

    According to your description, your issue is more related about AForge.Net. it will be more appropriate to ask your question at AForge.Net forum.

    Thanks for you understanding.



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    Monday, November 12, 2018 5:52 AM