Mencoder 1.0rc1 (support for jpeg, gif, png, freetype, h264, lame, xvid, mad, win32codecs, dv, 3gp, mp4, theora)
Mplayer 1.0rc1
FFmpeg (from SVN) (support for jpeg, gif, png, freetype, h264, lame, xvid, mad, win32codecs, dv, 3gp, mp4, theora
flvtool2 or yamdi (yamdi recommended))
MediaInfo (http://mediainfo.sourceforge.net/en)
x264 Library for Mencoder (http://www.videolan.org/developers/x264.html)
GPAC MP4Box (http://gpac.sourceforge.net)
neroAacEnc (http://www.nero.com/eng/technologies-aac-codec.html)
Additional codecs required for some rare video formats (http://www.sklav.com/?q=node/2)