I want to record the video from any of the video grabbing devices connected to my PC through USB ports. I am using the Aforge Framework in c#. I am successful in displaying the video in the application and also i want to record the same to my hard disk.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using AForge.Video;
using AForge.Video.DirectShow;
using AForge.Video.FFMPEG;
using AForge.Video.VFW;
using System.Drawing.Imaging;
namespace cam_aforge1
{
public partial class Form1 : Form
{
//private AVIWriter writer = new AVIWriter("MSVC");
//Queue<Bitmap> frames = new Queue<Bitmap>();
VideoFileWriter writer;
private bool DeviceExist = false;
private FilterInfoCollection videoDevices;
private VideoCaptureDevice videoSource = null;
public Form1()
{
InitializeComponent();
}
private void getCamList()
{
try
{
videoDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);
comboBox1.Items.Clear();
if (videoDevices.Count == 0)
throw new ApplicationException();
DeviceExist = true;
foreach (FilterInfo device in videoDevices)
{
comboBox1.Items.Add(device.Name);
}
comboBox1.SelectedIndex = 0; //make dafault to first cam
}
catch (ApplicationException)
{
DeviceExist = false;
comboBox1.Items.Add("No capture device on your system");
}
}
private void rfsh_Click(object sender, EventArgs e)
{
getCamList();
}
private void start_Click(object sender, EventArgs e)
{
if (start.Text == "&Start")
{
if (DeviceExist)
{
videoSource = new VideoCaptureDevice(videoDevices[comboBox1.SelectedIndex].MonikerString);
videoSource.NewFrame += new NewFrameEventHandler(video_NewFrame);
CloseVideoSource();
videoSource.DesiredFrameSize = new Size(160, 120);
//videoSource.DesiredFrameRate = 10;
videoSource.Start();
label2.Text = "Device running...";
start.Text = "&Stop";
timer1.Enabled = true;
videoSource.NewFrame += new NewFrameEventHandler(video_NewFrame);
videoSource.Start();
}
else
{
label2.Text = "Error: No Device selected.";
}
}
else
{
if (videoSource.IsRunning)
{
timer1.Enabled = false;
CloseVideoSource();
label2.Text = "Device stopped.";
start.Text = "&Start";
}
}
}
Bitmap img;
private void video_NewFrame(object sender, NewFrameEventArgs eventArgs)
{
img = (Bitmap)eventArgs.Frame.Clone();
pictureBox1.Image = img;
int width = 640;
int height = 480;
VideoFileWriter writer = new VideoFileWriter();
writer.Open(@"d:\\video.avi", width, height, 25, VideoCodec.Default, 1000000);
for (int i = 0; i < 1000; i++)
{
writer.WriteVideoFrame(img);
}
writer.Close();
Bitmap image = new Bitmap(width, height, PixelFormat.Format24bppRgb);
writer.WriteVideoFrame(image);
MessageBox.Show("jest");
}
private void CloseVideoSource()
{
if (!(videoSource == null))
if (videoSource.IsRunning)
{
videoSource.SignalToStop();
videoSource = null;
}
}
private void timer1_Tick(object sender, EventArgs e)
{
label2.Text = "Device running... " + videoSource.FramesReceived.ToString() + " FPS";
}
private void Form1_FormClosed(object sender, FormClosedEventArgs e)
{
CloseVideoSource();
}
private void Form1_Load(object sender, EventArgs e)
{
}
void FinalVideo_NewFrame(object sender, NewFrameEventArgs eventArgs)
{
//Bitmap video = (Bitmap)eventArgs.Frame.Clone();
//pictureBox1.Image = video;
/*int width = 640;
int height = 480;
VideoFileWriter writer = new VideoFileWriter();
writer.Open(@"d:\video.avi", width, height, 25, VideoCodec.Default, 1000000);
for (int i = 0; i < 1000; i++)
{
writer.WriteVideoFrame(img);
}
writer.Close();
Bitmap image = new Bitmap(width, height, PixelFormat.Format24bppRgb);
writer.WriteVideoFrame(image);
MessageBox.Show("jest"); */
}
private void button1_Click(object sender, EventArgs e)
{
//FinalVideo_NewFrame();
}
private void button2_Click(object sender, EventArgs e)
{
//writer.Close();
}
/*private void DoRecording()
{
writer.FrameRate = 25;
string savingPath=("D:/");
string videoName = "ICS_";
writer.Open(savingPath + videoName, 1278, 958);
DateTime start = DateTime.Now;
while(DateTime.Now.Subtract(start).Seconds<30)
{
if (frames.Count > 0)
{
Bitmap image = (Bitmap)pictureBox1.();
Bitmap bmp = frames.Dequeue();
writer.AddFrame(image);
bmp.Dispose();
}
}
writer.Close();
}*/
}
}
But this is not giving any video file output. Please help Thanks in advance
I don't know exactly if this is the problem but you declare the VideoFileWriter twice and another mistake is you put it inside the video_NewFrame event which means in every frame, you create, open and close the VideoFileWriter.
You better instantiate the VideoFileWriter once
VideoFileWriter writer = new VideoFileWriter();
Then create a button for saving and instantiate that you want to start the saving
writer.Open(@"d:\\video.mp4", width, height, 25, VideoCodec.MPEG4, 1000000);
then in the new frame event
img = (Bitmap)eventArgs.Frame.Clone();
for (int i = 0; i < 1000; i++)
{
writer.WriteVideoFrame(img);
}
Lastly create a button for stopping the saving of the video
writer.Close();
Sorry, I hope you understand what i mean. I got a bad english here
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