Capture Video - Hijack DLL/dialog

We are looking for a developer who can create following software: 1.) A DLL that hook/hijack a output window or/and surface of a media player and save the output to a video file. You can find on common developer website like codeguru or codeproject information about hijack, hooking. But we prefer to work with a coder who has experience with it. 2.) The output have to be a common video format. Maybe avi/mpeg4. You can encode the video with ffmpeg or similar library. The DLL will process the capture/hijack and give the data to ffmpeg. You have to create a small sample software that will work with the dll, for settings and needed management Development Language C++ Language Spec: unmanaged, visualstudio 2008 or 2010, Unicode build.