ffdshow is a set of DirectShow filters and VFW codec for video compression, decompression and processing and audio compression and processing. You can play almost any movie using ffdshow.FFDShow uses libavcodec from ffmpeg project or for video decompression (it can use xvid.dll installed with xvid codec too), postprocessing code from mplayer to enhance visual quality of low bitrate movies, and is based on original DirectShow filter from XviD, which is GPLed educational implementation of MPEG4 encoder.Great DirectShow decoding filter for decompressing DIVX movies, picture postprocessing