使用aforg.net 录制摄像头附源码

浏览数：19 / 时间：2015年06月09日

这一篇在上一篇使用aforg.net 捕获摄像头的基础上稍加修改增加录制功能

录制功能使用AForge.Video.FFMPEG 需要添加对 AForge.Video.FFMPEG.dll的引用并且拷贝AForge.NET\Framework\Externals\ffmpeg\bin路径下的全部dll到Debug目录下

直接上代码了对上一篇的代码稍有修改

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using 
AForge.Video;
using 
AForge.Video.DirectShow;
using 
AForge.Video.FFMPEG;
using 
System;
using 
System.Drawing;
using 
System.Windows.Forms;
 
namespace 
CameraCapture
{
    public 
partial class Form1 : Form
    {
        private 
FilterInfoCollection filterInfoCollection;
        private 
VideoCaptureDevice captureDevice;
 
        //AForge.Video.FFMPEG 提供的视频写入类
        private 
VideoFileWriter videoFileWriter = new 
VideoFileWriter();
 
        private 
VideoCapabilities[] videoCapabilities;
        private 
string fileName;
        private 
Size frameSize;
        private 
int framRate;
 
        public 
Form1()
        {
            InitializeComponent();
            filterInfoCollection = new 
FilterInfoCollection(FilterCategory.VideoInputDevice);
            foreach 
(FilterInfo item in 
filterInfoCollection)
            {
                this.comboBox1.Items.Add(item.Name);
            }
            this.comboBox1.SelectedIndex = 0;
            //先初始化一下 否则在下面判断是否已运行时会报错
            captureDevice = new 
VideoCaptureDevice();
        }
 
        private 
void button1_Click(object 
sender, EventArgs e)
        {
            if 
(this.checkBox1.Checked)
            {
                SaveFileDialog sfd = new 
SaveFileDialog();
                sfd.AddExtension = true;
                sfd.DefaultExt = ".avi";
                sfd.Filter = "视频文件|*.avi";
                if 
(sfd.ShowDialog() == DialogResult.OK)
                {
                    fileName = sfd.FileName;
                }
 
                //文件名 宽度 高度 帧率 编码
                videoFileWriter.Open(fileName, frameSize.Width, frameSize.Height, framRate, VideoCodec.MPEG4);
            }
            if 
(captureDevice.IsRunning)
                captureDevice.Stop();
 
            captureDevice.NewFrame += captureDevice_NewFrame;
            captureDevice.Start();
            MessageBox.Show(videoFileWriter.FrameRate.ToString());
        }
 
        private 
void captureDevice_NewFrame(object 
sender, NewFrameEventArgs eventArgs)
        {
            this.pictureBox1.Image = (Bitmap)eventArgs.Frame.Clone();
            if 
(this.checkBox1.Checked)
            {
                videoFileWriter.WriteVideoFrame((Bitmap)eventArgs.Frame);
            }
        }
 
        private 
void comboBox1_SelectedIndexChanged(object 
sender, EventArgs e)
        {
            GetVideoCapabilities();
        }
 
        /// <summary>
        ///获取摄像头分辨率
        /// </summary>
        private 
void GetVideoCapabilities()
        {
            captureDevice = new 
VideoCaptureDevice(filterInfoCollection[comboBox1.SelectedIndex].MonikerString);
            try
            {
                videoCapabilities = captureDevice.VideoCapabilities;
 
                foreach 
(VideoCapabilities capabilty in 
videoCapabilities)
                {
                    if 
(!this.comboBox2.Items.Contains(capabilty.FrameSize))
                    {
                        this.comboBox2.Items.Add(capabilty.FrameSize);
                    }
                }
                if 
(videoCapabilities.Length == 0)
                {
                    this.comboBox2.Items.Add("Not supported");
                }
                this.comboBox2.SelectedIndex = 0;
            }
            catch 
(Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }
 
        private 
void comboBox2_SelectedIndexChanged(object 
sender, EventArgs e)
        {
            this.frameSize = captureDevice.VideoCapabilities[comboBox2.SelectedIndex].FrameSize;
            this.framRate = captureDevice.VideoCapabilities[comboBox2.SelectedIndex].FrameRate;
        }
 
        /// <summary>
        /// 关闭后结束捕获 释放资源
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
 
        private 
void Form1_FormClosing(object 
sender, FormClosingEventArgs e)
        {
            if 
(captureDevice.IsRunning)
            {
                captureDevice.Stop();
            }
            if 
(videoFileWriter.IsOpen)
            {
                videoFileWriter.Close();
            }
        }
    }
}