AVIWriter in Aforge not recording

[suneye]

hello,
I am trying to record video by aviwriter class in aforge but the resulting avi file is either 0Kb or the whole video is viewing only one picture

using System;
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 AForge.Video.FFMPEG;
using AForge.Video.VFW;
using System.IO;

namespace WindowsFormsApplication12
{
    public partial class Form1 : Form
    {
        private FilterInfoCollection videocapturedevices;
        private VideoCaptureDevice finalvideo;
        public Form1()
        {
            InitializeComponent();
        }

        private void pictureBox1_Click(object sender, EventArgs e)
        {

        }

        private void Form1_Load(object sender, EventArgs e)
        {
            videocapturedevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);
            foreach (FilterInfo VideoCaptureDevice in videocapturedevices)
            {
                comboBox1.Items.Add(VideoCaptureDevice.Name);

            }
            comboBox1.SelectedIndex = 0;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            finalvideo = new VideoCaptureDevice(videocapturedevices[comboBox1.SelectedIndex].MonikerString);

            finalvideo.NewFrame+=new NewFrameEventHandler(finalvideo_NewFrame);

            finalvideo.Start();



        }
        void finalvideo_NewFrame(object sender, NewFrameEventArgs eventArgs)
        {
            //FilterInfoCollection x = new FilterInfoCollection(FilterCategory.VideoCompressorCategory);
            //foreach (FilterInfo y in x)
            //{
            //    MessageBox.Show(y.Name);
            //}


            Bitmap video = (Bitmap)eventArgs.Frame.Clone();
            //MessageBox.Show(video.Width.ToString());
            //MessageBox.Show(video.Height.ToString());

            pictureBox1.Image = video;
            // instantiate AVI writer, use WMV3 codec
            AVIWriter writer = new AVIWriter("DivX");

            // create new AVI file and open it
            writer.Open("test1.avi", 640, 480);
            // create frame image


            for (int i = 0; i < 576; i++)
            {
                // update image


                // add the image as a new frame of video file
                writer.AddFrame(video);
            }
            writer.Close();

        }

        private void button2_Click(object sender, EventArgs e)
        {
            if (finalvideo.IsRunning)
            {
                finalvideo.Stop();

            }
            this.Close();
        }




    }
}

any help!!!

[lolafuertes]

I sounds taht at each frame, you open and close the writer, overwritting the content.

I woudl move the

AVIWriter writer = new AVIWriter("DivX");

to the private variables definition before the

public Form1()

then i'll move

// create new AVI file and open it
writer.Open("test1.avi", 640, 480);

to the button1_click, before

finalvideo.Start();

then, on the button1_click i'll put the

writer.Close();

before

this.Close();

Hope this helps

[suneye]

thank u lolafuertes,,,I've tried what you said but writer.AddFrame() generated an error : "object is in use elsewhere" .
any ideas?

[fabiodbmacedo]

Anyone solved that problem? I have the same problem