录制十秒钟的AVI视频
在网上找的类
using System;
using System.Collections;
using System.Drawing;
using System.Runtime.InteropServices;
using System.Text;
using System.IO;
namespace CamaraMonitor
{
public class Video
{
public bool flag = true;
public delegate void RecievedFrameEventHandler(byte[] data);
public event RecievedFrameEventHandler RecievedFrame;
public static ArrayList allDriver = new ArrayList();//所有视频硬件信息
public AviCapture.CAPDRIVERCAPS CapDriverCAPS;//捕获驱动器的能力,如有无视频叠加能力、有无控制视频源、视频格式的对话框等;
public AviCapture.CAPSTATUS CapStatus;//该结构用于保存视频设备捕获窗口的当前状态,如图像的宽、高等
public AviCapture.CAPTUREPARMS Capparms;
private IntPtr mControlPtr;//显示设备句柄
public IntPtr lwndC;
private int mWidth;//视频宽度
private int mHeight;//视频高度
public Bitmap ba;
/// <summary>
/// 构造函数
/// </summary>
/// <param name="handle"></param>
/// <param name="width"></param>
/// <param name="height"></param>
public Video(IntPtr handle, int width, int height)
{
CapDriverCAPS = new AviCapture.CAPDRIVERCAPS();//捕获驱动器的能力,如有无视频叠加能力、有无控制视频源、视频格式的对话框等;
CapStatus = new AviCapture.CAPSTATUS();//该结构用于保存视频设备捕获窗口的当前状态,如图像的宽、高等
mControlPtr = handle;
mWidth = width;
mHeight = height;
//---------------------------------------------------以下为获得机器上所有视频设备
}
/// <summary>
/// 方法说明:获得本机器上的所有视频设备
/// </summary>
//public static void GetAllDriver()
//{
// for (int i = 0; i < 6; i++)
// {
// StringBuilder name = new StringBuilder(128);
// StringBuilder version = new StringBuilder(128);
// if (AviCapture.capGetDriverDescription(i, name, 128, version, 128))//获得已经安装的 捕获的设备 名称和版本信息
// {
// AviCapture.VideoCaptureDevice vcd = new VideoCaptureDevice(i, name.ToString(), version.ToString());
// allDriver.Add(vcd);
// }
// }
//}
public void get()
{
AviCapture.SendMessage(this.lwndC, AviCapture.WM_CAP_GET_SEQUENCE_SETUP, AviCapture.SizeOf(Capparms), ref Capparms);
}
public void set()
{
AviCapture.SendMessage(this.lwndC, AviCapture.WM_CAP_SET_SEQUENCE_SETUP, AviCapture.SizeOf(Capparms), ref Capparms);
}
/// <summary>
/// 关闭摄像头
/// </summary>
public void CloseWebcam(int index) //关闭摄像头
{
CapDriverCAPS.fCaptureInitialized = false;
AviCapture.SendMessage(this.lwndC, AviCapture.WM_CAP_DRIVER_DISCONNECT, index, 0);
}
/// <summary>
/// 开启摄像头
/// </summary>
public void StartWebCam() //开启摄像头
{
this.lwndC = AviCapture.capCreateCaptureWindow("", AviCapture.WS_CHILD | AviCapture.WS_VISIBLE, 0, 0, mWidth, mHeight, mControlPtr, 0);//AVICap类的捕捉窗口
//AviCapture.FrameEventHandler FrameEventHandler = new AviCapture.FrameEventHandler(framecallback);
//AviCapture.SendMessage(this.lwndC, AviCapture.WM_CAP_SET_CALLBACK_ERROR, 0, 0);//注册错误回调函数
//AviCapture.SendMessage(this.lwndC, AviCapture.WM_CAP_SET_CALLBACK_STATUS, 0, 0);//注册状态回调函数
//AviCapture.SendMessage(this.lwndC, AviCapture.WM_CAP_SET_CALLBACK_VIDEOSTREAM, 0, 0);//注册视频流回调函数
//AviCapture.SendMessage(this.lwndC, AviCapture.WM_CAP_SET_CALLBACK_FRAME, 0, FrameEventHandler);//注册帧回调函数
//if (!CapDriverCAPS.fCaptureInitialized)//判断当前设备是否被其他设备连接已经连接
//{
if (AviCapture.SendMessage(this.lwndC, AviCapture.WM_CAP_DRIVER_CONNECT, 0, 0))
{
//-----------------------------------------------------------------------
AviCapture.SendMessage(this.lwndC, AviCapture.WM_CAP_DRIVER_GET_CAPS, AviCapture.SizeOf(CapDriverCAPS), ref CapDriverCAPS);//获得当前视频 CAPDRIVERCAPS定义了捕获驱动器的能力,如有无视频叠加能力、有无控制视频源、视频格式的对话框等;
AviCapture.SendMessage(this.lwndC, AviCapture.WM_CAP_GET_STATUS, AviCapture.SizeOf(CapStatus), ref CapStatus);//获得当前视频流的尺寸 存入CapStatus结构
AviCapture.BITMAPINFO bitmapInfo = new AviCapture.BITMAPINFO();//设置视频格式 (height and width in pixels, bits per frame).
bitmapInfo.bmiHeader = new AviCapture.BITMAPINFOHEADER();
bitmapInfo.bmiHeader.biSize = AviCapture.SizeOf(bitmapInfo.bmiHeader);
bitmapInfo.bmiHeader.biWidth = mWidth;
bitmapInfo.bmiHeader.biHeight = mHeight;
bitmapInfo.bmiHeader.biPlanes = 1;
bitmapInfo.bmiHeader.biBitCount = 24;
AviCapture.SendMessage(this.lwndC, AviCapture.WM_CAP_SET_PREVIEWRATE, 66, 0);//设置在PREVIEW模式下设定视频窗口的刷新率 设置每34毫秒显示一帧,即显示帧速为每秒29帧
AviCapture.SendMessage(this.lwndC, AviCapture.WM_CAP_SET_SCALE, 1, 0);//打开预览视频的缩放比例
AviCapture.SendMessage(this.lwndC, AviCapture.WM_CAP_SET_VIDEOFORMAT, AviCapture.SizeOf(bitmapInfo), ref bitmapInfo);
AviCapture.CAPTUREPARMS captureparms = new AviCapture.CAPTUREPARMS();
AviCapture.SendMessage(this.lwndC, AviCapture.WM_CAP_GET_SEQUENCE_SETUP, AviCapture.SizeOf(captureparms), ref captureparms);
if (CapDriverCAPS.fHasOverlay)
{
AviCapture.SendMessage(this.lwndC, AviCapture.WM_CAP_SET_OVERLAY, 1, 0);//启用叠加 注:据说启用此项可以加快渲染速度
}
AviCapture.SendMessage(this.lwndC, AviCapture.WM_CAP_SET_PREVIEW, 1, 0);//设置显示图像启动预览模式 PREVIEW
AviCapture.SetWindowPos(this.lwndC, 0, 0, 0, mWidth, mHeight, AviCapture.SWP_NOZORDER | AviCapture.SWP_NOMOVE);//使捕获窗口与进来的视频流尺寸保持一致
}
else
{
System.Windows.Forms.MessageBox.Show("未能连接设备,请检查设备连接及是否有其他程序占用!");
flag = false;
}
//}
//else
//{
// System.Windows.Forms.MessageBox.Show("未能连接设备,请检查设备连接及是否有其他程序占用!");
//}
}
/// <summary>
/// 抓图到制定的路径
/// </summary>
/// <param name="path"></param>
public void grabImage(string path)
{
IntPtr hBmp = Marshal.StringToHGlobalAnsi(path);
AviCapture.SendMessage(lwndC, AviCapture.WM_CAP_FILE_SAVEDIB, 0, hBmp.ToInt32());
}
/// <summary>
/// 弹出视频格式设置对话框
/// </summary>
public void setCaptureFormat()
{
AviCapture.SendMessage(this.lwndC, AviCapture.WM_CAP_DLG_VIDEOFORMAT, 0, 0);
// 是否由新的图像尺寸?
// 如果有,发送通知给父窗口,告诉它尺寸改变了
AviCapture.SendMessage(this.lwndC, AviCapture.WM_CAP_GET_STATUS, AviCapture.SizeOf(CapStatus), ref CapStatus);//获得当前视频流的尺寸 存入CapStatus结构
}
/// <summary>
/// 开始录像
/// </summary>
/// <param name="path">要保存录像的路径</param>
public void StarKinescope(string path)
{
IntPtr hBmp = Marshal.StringToHGlobalAnsi(path);
AviCapture.SendMessage(this.lwndC, AviCapture.WM_CAP_FILE_SET_CAPTURE_FILE, 0, hBmp.ToInt32());
////AviCapture.SendMessage(this.lwndC, AviCapture.WM_CAP_SEQUENCE, 0, 0);
}
/// <summary>
/// 停止录像
/// </summary>
public void StopKinescope()
{
AviCapture.SendMessage(this.lwndC, AviCapture.WM_CAP_STOP, 0, 0);
}
public void setVideoCompression()
{
AviCapture.SendMessage(this.lwndC, AviCapture.WM_CAP_DLG_VIDEOCOMPRESSION, 0, 0);
}
}
}
用这个控制视频录制十秒会不稳定:
video.StarKinescope(Directory.GetCurrentDirectory() + "\\HR_Video.avi"); //"c://" + System.DateTime.Now.ToString("yyyyMMddHHmmss") + ".avi");
System.Threading.Thread.Sleep(10000);
video.StopKinescope();
video.CloseWebcam(0);
请问大侠有什么好办法能精准的录制十秒的AVI文件。谢谢