The FFDShow codec is a decoding filter for DirectShow and used mainly for decompressing, , H.264, FLV1, WMV, MPEG-1 and MPEG-2, MPEG-4 movies. The still uses the libavcodec from the ffmpeg project to decompress video and to manage the post processing code from the mplayer to enhance visual quality of low bitrate movies.
This is the 32bit Windows version of thecodec. If you are running Linux then you need to compile FFDShow on your computer. Download this 32 bit Windows Version here.