c#基@于@A@F@@o@rg@e类@库@实@现@摄@像@头@控@制

来源：互联网发布：创冰足球球员数据编辑：程序博客网时间：2024/04/28 09:52

首先引入AForge库文件

程序片段：

///枚举视频输入设备

try
{
// 枚举所有视频输入设备
FilterInfoCollection videoDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);

if (videoDevices.Count == 0)
throw new ApplicationException();

foreach (FilterInfo device in videoDevices)
{
tscbxCameras.Items.Add(device.Name);
}

tscbxCameras.SelectedIndex = 0;
}
catch (ApplicationException)
{
tscbxCameras.Items.Add("No local capture devices");
videoDevices = null;
}

/////连接

VideoCaptureDevice videoSource = new VideoCaptureDevice(videoDevices[tscbxCameras.SelectedIndex].MonikerString);
videoSource.DesiredFrameSize = new Size(320, 240);
videoSource.DesiredFrameRate = 1;

videPlayer.VideoSource = videoSource; //videPlayer为AForge.Controls.VideoSourcePlayer控件
videPlayer.Start();

/////关闭

videPlayer.SignalToStop();
videPlayer.WaitForStop();

/////抓图

private void button3_Click(object sender, EventArgs e)
{
Bitmap _bitmap= _videoSourcePlayer.GetCurrentVideoFrame();
_bitmap.Save(@"C:\Users\yangpeng\Documents\Visual Studio 2013\Projects\WindowsFormsApplication33\WindowsFormsApplication33\bin\a.bmp",ImageFormat.Bmp);
}

、、、、、=======================

private void button1_Click(object sender, EventArgs e)
{
_videoCaptureDevice = new VideoCaptureDevice(g_filterInfo.MonikerString);
_videoCaptureDevice.DesiredFrameRate = 1;
_videoSourcePlayer = new VideoSourcePlayer();
_videoSourcePlayer.VideoSource = _videoCaptureDevice;
_videoSourcePlayer.Size = new System.Drawing.Size(320,240);
_videoSourcePlayer.Show();
this.Controls.Add(_videoSourcePlayer);
//_videoCaptureDevice.NewFrame += new NewFrameEventHandler(NewFrameEventHandl);

//_videoSourcePlayer.NewFrame += new VideoSourcePlayer.NewFrameHandler(NewFrame);

_videoSourcePlayer.Start();
//g_videoFileWriter = new VideoFileWriter();
//g_videoFileWriter.Open(@"C:\Users\yangpeng\Documents\Visual Studio 2013\Projects\WindowsFormsApplication33\WindowsFormsApplication33\bin\De.avi", 320, 240, 10, VideoCodec.MPEG4);

}

可能的问题：

1、

混合模式程序集是针对“v2.0.50727”版的运行时生成的，在没有配置其他信息的情况下，无法在 4.0 运行

(2012-03-21 16:30:30)

转载▼

标签：

杂谈

在使用.Net2.0和.Net4.0混合开发，启动应用程序时遇到了“混合模式程序集是针对“v2.0.50727”版的运行时生成的，在没有配置其他信息的情况下，无法在 4.0 运行时中加载该程序集。”这个错误提示。解决方案如下：

在app.config中的configuration节内添加子节Startup，详细如下：

</startup>

，之后完整的app.config看起来就像这样：

<?xml version="1.0"?>
<configuration>
  <startup useLegacyV2RuntimeActivationPolicy="true">
    <supportedRuntime version="v4.0" sku = ".NETFramework,Version=v4.0"/>
    <supportedRuntime version="v2.0.50727"/>
  </startup>
</configuration>

2、

未能加载文件或程序集“AForge.Video.FFMPEG.dll”或它的某一个依赖项。找不到指定的模块

如果是64位的话，就出来这个问题。编译的时候，请选择X86.

使用AForge.Video.FFMPEG的命名空间，用来保存视频编码，其在底层用了ffmpeg的类库，所以运行程序时需要avcodec-53.dll等类库在场。你可以从AForge的类库包的Externals\ffmpeg\bin中找到这些文件。

首先你的把 avcodec-53.dll ，avdevice-53.dll，avfilter-2.dll ，avformat-53.dll ，avutil-51.dll，swresample-0.dll，swscale-2.dll这7个DLL 复制到调试目录下面。你知道这几个文件怎么找吧。然后
工具---选项----调试---常规----勾选使用托管兼容模式

最近使用aforge.NET拍照录像功能实现

记录一下以便以后好学习，哈哈，直接上代码

连接摄像头设备，这里需要引入

AForge.Video;

AForge.Video.DirectShow;

AForge.Video.FFMPEG;

还需要添加引用，aforge.dll,aforge.control,

在工具箱中还需要添加AForge.Control，然后找到VideoSourcePlayer这个控件添加到界面上

然后定义变量

private FilterInfoCollection videoDevices;
private VideoCaptureDevice videoSource;

private bool stopREC = true;
private bool createNewFile = true;

private string videoFileFullPath = string.Empty; //视频文件全路径
private string imageFileFullPath = string.Empty; //图像文件全路径
private string videoPath = @"E:\video\"; //视频文件路径
private string imagePath = @"E:\video\images\"; //图像文件路径
private string videoFileName = string.Empty; //视频文件名
private string imageFileName = string.Empty; //图像文件名
private string drawDate = string.Empty;
private VideoFileWriter videoWriter = null;

public delegate void MyInvoke(); //定义一个委托方法

string g_s_AutoSavePath = AppDomain.CurrentDomain.BaseDirectory + "Capture\\";
object objLock = new object(); //定义一个对象的锁
int frameRate = 20; //默认帧率
private Stopwatch stopWatch = null;
IVideoSource iVideoSource = null;

private void InitUI(){    //连接       //开启摄像头   videoDevices = vh.GetDevices();    if (videoDevices != null && videoDevices.Count > 0)    {        videoSource = vh.VideoConnect();    }    videoSourcePlayer1.VideoSource = videoSource;    videoSourcePlayer1.Start();}

开始录像

 private void btnStartVideotape_Click(object sender, EventArgs e)        {            //开始录像            if (btnStartVideotape.Text == "开始录像")            {                stopREC = false;                frameRate = Convert.ToInt32(txtFrameRate.Text.Trim());                btnStartVideotape.Text = "停止录像";            }            else if (btnStartVideotape.Text == "停止录像")            {                stopREC = true;                btnStartVideotape.Text = "开始录像";            }        }

添加aforge.Net的一个VideoSourcePlayer控件之后找到NewFrame事件，代码如下：

下面是控件的一个事件，是真正录像的代码

private void videoSourcePlayer1_NewFrame(object sender, ref Bitmap image)        {            //录像            Graphics g = Graphics.FromImage(image);            SolidBrush drawBrush = new SolidBrush(Color.Yellow);            Font drawFont = new Font("Arial", 6, FontStyle.Bold, GraphicsUnit.Millimeter);            int xPos = image.Width - (image.Width - 15);            int yPos = 10;            //写到屏幕上的时间            drawDate = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");            g.DrawString(drawDate, drawFont, drawBrush, xPos, yPos);            if (!Directory.Exists(videoPath))                Directory.CreateDirectory(videoPath);            //创建文件路径            //fileFullPath = path + fileName;            if (stopREC)            {                stopREC = true;                createNewFile = true;  //这里要设置为true表示要创建新文件                if (videoWriter != null)                    videoWriter.Close();            }            else            {                //开始录像                if (createNewFile)                {                    videoFileName = DateTime.Now.ToString("yyyy.MM.dd HH.mm.ss") + ".avi";                    videoFileFullPath = videoPath + videoFileName;                    createNewFile = false;                    if (videoWriter != null)                    {                        videoWriter.Close();                        videoWriter.Dispose();                    }                    videoWriter = new VideoFileWriter();                    //这里必须是全路径，否则会默认保存到程序运行根据录下了                    videoWriter.Open(videoFileFullPath, image.Width, image.Height, frameRate, VideoCodec.MPEG4);                    videoWriter.WriteVideoFrame(image);                }                else                {                    videoWriter.WriteVideoFrame(image);                }            }        }

拍照代码

/// <summary>/// 手动拍照或抓图/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void btnCapture_Click(object sender, EventArgs e){    try    {        int number=0;        number++;        string fileImageName = g_s_RequestNo + "-" + number + ".bmp";        string fileCapturePath = g_s_AutoSavePath + g_s_RequestNo + "\\";        if (!Directory.Exists(fileCapturePath))            Directory.CreateDirectory(fileCapturePath);        //抓到图保存到指定路径        Bitmap bmp = null;        bmp = videoSourcePlayer1.GetCurrentVideoFrame();        if (bmp == null)        {            MessageBox.Show("捕获图像失败！", "提示");            return;        }                bmp.Save(fileCapturePath + fileImageName, ImageFormat.Bmp);                }    catch (Exception ex)    {        MessageBox.Show("捕获图像失败！" + ex.Message, "提示");    }}

//============

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using AForge;
using AForge.Controls;
using AForge.Imaging;
using AForge.Video;
using AForge.Video.DirectShow;
using AForge.Video.FFMPEG;
using System.Drawing.Imaging;
using System.IO;

namespace WindowsFormsApplication33
{
public partial class Form1 : Form
{

public Form1()
{
InitializeComponent();
}
List<string> g_listStringVideoDevices = new List<string>();
FilterInfo g_filterInfo = null;
private void Form1_Load(object sender, EventArgs e)
{
FilterInfoCollection _filterInfoCollect = null;
_filterInfoCollect = new FilterInfoCollection(FilterCategory.VideoInputDevice);
foreach (FilterInfo item in _filterInfoCollect)
{
g_listStringVideoDevices.Add(item.Name);
}
g_filterInfo = _filterInfoCollect[0];
}

VideoSourcePlayer _videoSourcePlayer = null;
VideoCaptureDevice _videoCaptureDevice = null;
private void button1_Click(object sender, EventArgs e)
{
_videoCaptureDevice = new VideoCaptureDevice(g_filterInfo.MonikerString);
_videoCaptureDevice.DesiredFrameRate = 1;
_videoSourcePlayer = new VideoSourcePlayer();
_videoSourcePlayer.VideoSource = _videoCaptureDevice;
_videoSourcePlayer.Size = new System.Drawing.Size(320,240);
_videoSourcePlayer.Show();
this.Controls.Add(_videoSourcePlayer);

_videoSourcePlayer.NewFrame += new VideoSourcePlayer.NewFrameHandler(NewFrame);

_videoSourcePlayer.Start();
g_videoFileWriter = new VideoFileWriter();
g_videoFileWriter.Open(@"C:\Users\yangpeng\Documents\Visual Studio 2013\Projects\WindowsFormsApplication33\WindowsFormsApplication33\bin\De.avi",320,240);

}

private void button2_Click(object sender, EventArgs e)
{

_videoCaptureDevice.SignalToStop();
_videoCaptureDevice.WaitForStop();
_videoSourcePlayer.Stop();
g_videoFileWriter.Close();
}

VideoFileWriter g_videoFileWriter = null;
bool createNewFile = true;
//录像
void NewFrame(object sender, ref Bitmap image)
{
//开始录像
if (createNewFile)
{

createNewFile = false;
if (g_videoFileWriter != null)
{
g_videoFileWriter.Close();
g_videoFileWriter.Dispose();
}
g_videoFileWriter = new VideoFileWriter();
//这里必须是全路径，否则会默认保存到程序运行根据录下了
g_videoFileWriter.Open(@"C:\Users\yangpeng\Documents\Visual Studio 2013\Projects\WindowsFormsApplication33\WindowsFormsApplication33\bin\ddd.avi", image.Width, image.Height, 20, VideoCodec.MPEG4);
g_videoFileWriter.WriteVideoFrame(image);
}
else
{
g_videoFileWriter.WriteVideoFrame(image);
}

}

//抓图
private void button3_Click(object sender, EventArgs e)
{
Bitmap _bitmap= _videoSourcePlayer.GetCurrentVideoFrame();
_bitmap.Save(@"C:\Users\yangpeng\Documents\Visual Studio 2013\Projects\WindowsFormsApplication33\WindowsFormsApplication33\bin\a.bmp",ImageFormat.Bmp);
}

}
}

//========================================================

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