C# WinForm 基于DirectShow.dll编写的程序，可边预览边保存视频，音频和图片

--------------------------------------------------------------------- DxTuner While the underlying libraries are covered by LGPL, this sample is released as public domain. It is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. --------------------------------------------------------------------- This sample application shows how to change channels on a tv tuner. There are several things you should know: - The audio pins are not connected in this application. - The tuner button is greyed out until the graph is constructed. Because of the way the UI is structured, that means the graph must be running to change the channel. - If your video is blank, try playing with the crossbar. Make sure the "Video Decoder Out" is connected to something that has a signal (Tuner in, Composite In, etc). - If your video is jerky, this is probably due to the fact that this program is saving the video to disk. If you are not using compression, you are writing huge amounts of data. As a for-instance 640 x 480 x 16bpp x 30fps = ~20meg per sec. If you are using compression, your compressor may be too slow for use with live capture. As a test, try using Intel Indeo for compressing. Make sure you click the "Quick Compress" on the compressor's property page.