MEncoder

MEncoder is a free command line video decoding, encoding and filtering tool released under the GNU General Public License. It is a sibling of http://alternativeto.net/software/mplayer/ , and can convert all the formats that MPlayer understands into a variety of compressed and uncompressed formats using different codecs. MEncoder is included in the http://alternativeto.net/software/mplayer/ distribution. MEncoder is also supported on BSD and Haiku/BeOS platforms.