拍照 1. 获取视频输入设备 // 获取所有摄像头设备 public FilterInfoCollection GetDevices() { try { //枚举所有视频输入设备 FilterInfoCollection videoDevice = new FilterInfoCollection(FilterCategory.VideoInputDevice); if (videoDevice.Count != 0) { } return videoDevice; else return null; { } } catch return null; { } } 2. 加载视频输入设备 private FilterInfoCollection _videoDevices; private VideoCaptureDevice _videoSource; private VideoCapabilities _videoCapability; private int _selectedDeviceIndex = 0; private string drawDate = string.Empty; //加载 private void InitDevice() { _videoDevices = GetDevices(); if (_videoDevices == null || _videoDevices.Count <= 0) { cmbVideoDevices.Items.Add("未检查到摄像头"); cmbVideoDevices.SelectedIndex = 0; _msg = "摄像头异常！"; 

btnConnection.Enabled = false; } else { cmbVideoDevices.Items.Clear(); foreach (FilterInfo device in _videoDevices) { } cmbVideoDevices.Items.Add(device.Name); cmbVideoDevices.SelectedIndex = 0; _videoSource = VideoConnect(0, 0); if (_videoSource == null) { } return; _videoCapability = _videoSource.VideoCapabilities[0]; } } 3. //打开视频设备 private void OpenCamers() { } if (_videoDevices == null || _videoDevices.Count <= 0) { } return; _videoSource = VideoConnect(0, 0); //打开视频设备 if (_videoSource == null) { } return; if (!videoSourcePlayer1.IsRunning) { } _videoSource.VideoResolution = _videoCapability; videoSourcePlayer1.VideoSource = _videoSource; videoSourcePlayer1.Start(); 

4. //拍照并在PictureBox上显示 public bool Photograph(string photoName) { } if (videoSourcePlayer1.IsRunning) { _videoSource.VideoResolution = _videoCapability; if (photoName == null) { } photoName = (DateTime.Now).ToString("yyMMddHHmmssff"); Bitmap bitmap = videoSourcePlayer1.GetCurrentVideoFrame(); Bitmap _bitmap = (Bitmap)bitmap.Clone(); pbShow.Image = _bitmap; ImageFormat imageFormat = ImageFormat.Jpeg; bitmap.Save(photoDir + photoName + ".JPEG", imageFormat); bitmap.Dispose(); return true; } return false; 5. // 连接视频摄像头 public VideoCaptureDevice VideoConnect(int deviceIndex, int resolutionIndex) { if (_videoDevices.Count <= 0) { } return null; _selectedDeviceIndex = deviceIndex; VideoCaptureDevice videoSource = new VideoCaptureDevice(_videoDevices[deviceIndex].MonikerString); videoSource.VideoResolution = videoSource.VideoCapabilities[resolutionIndex]; return videoSource; } 在页面上需要的引用： using AForge.Video.DirectShow; using System.IO; using System.Drawing.Imaging; 

主要是 AForge 类库的引用，此类库是非常强大的调用视频输入设备类库，在使用 AForge 类库的视频拍照 功能时，需要将 AForge 类库中的 AForge.Controls.DLL 在工具箱中加载，显示出类库自定义的 视频输出控件 VideoSourcePlayer（在项目外将 AForge.Controls.DLL 拖入工具箱即可），如下图： 然后将用户自定义控件 VideoSourcePlayer 拖入页面。 视频录制源码已完善,在拍照的基础上只将拍照方法改成视频录制方法: 视频 ///

/// 视频录制方法 ///

/// /// private void videoSourcePlayer1_NewFrame(object sender, ref Bitmap image) { //录像 Graphics g = Graphics.FromImage(image); SolidBrush drawBrush = new SolidBrush(Color.Blue); 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 (_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) { videoFileFullPath = videoDir + _videoName + ".avi"; _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); } } 此方法是 VideoSourcePlayer 的事件:NewFrame,视频录制主要是_videoWriter，有该对象将录制的资源写 入视频文件，详情见代码。 DLL 与实例： 拍照视频.rar