27 /** A generic class which process a video file or other kind of input stream (http, rtsp) and allows the extraction of images frame by frame.
28 * Video sources can be open with "openURL", which can manage both video files and "rtsp://" sources (IP cameras).
29 *
30 * Frames are retrieved by calling CFFMPEG_InputStream::retrieveFrame
31 *
32 * For an example of usage, see the file "samples/grab_camera_ffmpeg"
33 *
34 * \note This class is an easy to use C++ wrapper for ffmpeg libraries (libavcodec). In Unix systems these libraries must be installed in the system as explained in <a href="http://www.mrpt.org/Building_and_Installing_Instructions" > MRPT's wiki</a>. In Win32, a precompiled version for Visual Studio must be also downloaded as explained in <a href="http://www.mrpt.org/Building_and_Installing_Instructions" >the wiki</a>.