我用 C#（和 DirectShow.net）编写了一个相对简单的代码，以便将摄像机中的视频捕获到文件中。我的问题是图表在录制时丢失了太多帧。我不认为问题与硬件有关，因为它不是一个要求很高的视频（640x480，25fps），而且我有一台相当强大的计算机。关于防止丢帧的最佳实践有什么想法吗？
编辑：
这是我的代码：
Graph = (IGraphBuilder)new FilterGraph();
Source = CreateFilter(FilterCategory.VideoInputDevice, SelectedDevice);
hr = Graph.AddFilter(Source, "Source");
TestForError("Error while adding source filter", hr);
Builder = (ICaptureGraphBuilder2)new CaptureGraphBuilder2();
hr = Builder.SetFiltergraph(Graph);
TestForError("Error setting preview graph", hr);
Guid guid = DirectShowLib.MediaSubType.Avi;
hr = Builder.SetOutputFileName(guid, filename, out AVIMux, out FileWriter);
TestForError("Error setting capture graph", hr);
// Set VMR
VMR = (IBaseFilter)new VideoMixingRenderer9();
hr = Graph.AddFilter(VMR, "Renderer");
TestForError("Error creating preview subgraph", hr);
ConfigureWindowlessMode();
// Render Capture & Preview streams
hr = Builder.RenderStream(PinCategory.Preview, MediaType.Video, Source, null, VMR);
TestForError("Preview stream rendering error", hr);
hr = Builder.RenderStream(PinCategory.Capture, MediaType.Video, Source, null, AVIMux);
TestForError("Capture stream rendering error", hr);
//
Control = (IMediaControl)Graph;
mediaEventEx = (IMediaEventEx)Graph;
hr = mediaEventEx.SetNotifyWindow(Handle, WM_GRAPHNOTIFY, IntPtr.Zero);
TestForError("Error setting notifications", hr);
Control.Run();