AForge experience and file manipulation

Question

Morning all,

Does anyone on here have experience with using AForge and Video or webcam apps?

There is a .cs file called VideoCaptureDeviceForm that is part of AForge.DirectShow which provides a way of selecting a local video device i.e webcam.

I want to be able to automatically detect and start the webcam on my computer but a dialogbox pops up asking to select a webcam. I need a way to either bypass this in someway or automatically press the OK button.

Dialogbox

I have tried using SendKeys.Send("{ENTER}") within the open dialogbox button method i.e Start camera but I get errors.

Within VideoCaptureDeviceForm.cs, there is a method called okButton_Click and the next idea is to manipulate this to do what I want the app to do.

Unfortunately I don't have the experience to figure this out. Can anyone advise on how to do this or what I should do next? Thank you.

VideoCaptureDeviceForm.cs is below:

using System;
using System.Threading;
using System.Windows.Input;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using AForge.Video;
using AForge.Video.DirectShow;
using Accord.Video.FFMPEG;
using AForge.Video.VFW;

namespace WindowsFormsApp1
{
public partial class Form1 : Form
{
    private FilterInfoCollection VideoCaptureDevices;
    private VideoCaptureDevice FinalVideo = null;
    private VideoCaptureDeviceForm captureDevice;
    private Bitmap video;
    private VideoFileWriter FileWriter = new VideoFileWriter();
    private SaveFileDialog saveAvi;

    public Form1()
    {
        InitializeComponent();


        Start_Vid();
    }

    private void Form1_Load(object sender, EventArgs e)
    {
        VideoCaptureDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);
        captureDevice = new VideoCaptureDeviceForm();

    }

    void FinalVideo_NewFrame(object sender, NewFrameEventArgs eventArgs)
    {
        if (Stop.Text == "Stop Record")
        {
            video = (Bitmap)eventArgs.Frame.Clone();
            pictureBox1.Image = (Bitmap)eventArgs.Frame.Clone();
            //AVIwriter.Quality = 0;
            FileWriter.WriteVideoFrame(video);
            //AVIwriter.AddFrame(video);
        }
        else
        {
            video = (Bitmap)eventArgs.Frame.Clone();
            pictureBox1.Image = (Bitmap)eventArgs.Frame.Clone();
        }
    }

    private void Stop_Vid()
    {
        if (Stop.Text == "Stop Record")
        {
            Stop.Text = "Stop";
            if (FinalVideo == null)
            { return; }
            if (FinalVideo.IsRunning)
            {
                //this.FinalVideo.Stop();
                FileWriter.Close();
                //this.AVIwriter.Close();
                pictureBox1.Image = null;
            }
        }
        else
        {
            this.FinalVideo.Stop();
            FileWriter.Close();
            //this.AVIwriter.Close();
            pictureBox1.Image = null;
        }
    }
    private void butstop_Click(object sender, EventArgs e)
    {
        if (Stop.Text == "Stop Record")
        {
            Stop.Text = "Stop";
            if (FinalVideo == null)
            { return; }
            if (FinalVideo.IsRunning)
            {
                //this.FinalVideo.Stop();
                FileWriter.Close();
                //this.AVIwriter.Close();
                pictureBox1.Image = null;
            }
        }
        else
        {
            this.FinalVideo.Stop();
            FileWriter.Close();
            //this.AVIwriter.Close();
            pictureBox1.Image = null;
        }
    }

    private void button3_Click(object sender, EventArgs e)
    {
        pictureBox1.Image.Save("IMG" + DateTime.Now.ToString("hhmmss") + ".jpg");
    }

    private void Form1_FormClosing(object sender, FormClosingEventArgs e)
    {
        if (FinalVideo == null)
        { return; }
        if (FinalVideo.IsRunning)
        {
            this.FinalVideo.Stop();
            FileWriter.Close();
            //this.AVIwriter.Close();
        }
    }

    private void Save_Click(object sender, EventArgs e)
    {
        saveAvi = new SaveFileDialog();
        saveAvi.Filter = "Avi Files (*.avi)|*.avi";
        saveAvi.FileName = "New Vid1";

        if (saveAvi.ShowDialog() == System.Windows.Forms.DialogResult.OK)
        {
            int h = captureDevice.VideoDevice.VideoResolution.FrameSize.Height;
            int w = captureDevice.VideoDevice.VideoResolution.FrameSize.Width;
            FileWriter.Open(saveAvi.FileName, w, h, 25, VideoCodec.Default, 5000000);
            FileWriter.WriteVideoFrame(video);


            //AVIwriter.Open(saveAvi.FileName, w, h);
            Stop.Text = "Stop Record";
            //FinalVideo = captureDevice.VideoDevice;
            //FinalVideo.NewFrame += new NewFrameEventHandler(FinalVideo_NewFrame);
            //FinalVideo.Start();
        }


    }

    //##############################################//
    //        Method not working        //
    //##############################################//

    private void Start_Vid()
    {
        SendKeys.Send("{ENTER}");
        if (captureDevice.ShowDialog(this) == DialogResult.OK)
        {

            VideoCaptureDevice videoSource = captureDevice.VideoDevice;
            FinalVideo = captureDevice.VideoDevice;
            FinalVideo.NewFrame += new NewFrameEventHandler(FinalVideo_NewFrame);
            FinalVideo.Start();
        }
    }

    //##############################################//
    //        Method working            //
    //##############################################//

    private void Start_Click(object sender, EventArgs e)
    {
        SendKeys.Send("{ENTER}");
        if (captureDevice.ShowDialog(this) == DialogResult.OK)
        {
            VideoCaptureDevice videoSource = captureDevice.VideoDevice;
            FinalVideo = captureDevice.VideoDevice;
            FinalVideo.NewFrame += new NewFrameEventHandler(FinalVideo_NewFrame);
            FinalVideo.Start();
        }
    }
    private void Close_Click(object sender, EventArgs e)
    {
        this.Close();
    }
}

}

Answer 1

1) First, you need to find all webcam device is attached with you system

public FilterInfoCollection LoaclWebCamsCollection  = new FilterInfoCollection(FilterCategory.VideoInputDevice);

2) Then which webcam you want to use select "MonikerString" of that webcam

    VideoCaptureDevice videoSource = new VideoCaptureDevice(LoaclWebCamsCollection["Select webcam you want to user"].MonikerString);
                      OR
    VideoCaptureDevice videoSource = new VideoCaptureDevice(LoaclWebCamsCollection[0].MonikerString);




private void Start_Vid()
{
    FinalVideo = new 
    VideoCaptureDevice(LoaclWebCamsCollection[0].MonikerString);
    FinalVideo.NewFrame += new NewFrameEventHandler(FinalVideo_NewFrame);
    FinalVideo.Start();
}