C# directShow 视频加水印

/************************************************************************ DxLogo - Capture video and add a watermark 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. **************************************************************************/ A sample application showing how to superimpose a logo on a data stream. It uses a capture device for the video source, and outputs the result to a file.