libav-tools 6:9.20-0ubuntu0.14.04.1 (i386 binary) in ubuntu trusty

 Libav is a complete, cross-platform solution to decode, encode, record,
 convert and stream audio and video.
 .
 This package contains the avplay multimedia player, the avserver
 streaming server, the avconv audio and video encoder, and the avprobe
 stream analyzer. They support most existing file formats (AVI, MPEG,
 OGG, Matroska, ASF...) and encoding formats (MPEG, DivX, MPEG4, AC3,
 DV...). Additionally, it contains the qt-faststart utility which
 rearranges Quicktime files to facilitate network streaming.
 .
 This package also serves as a replacement for the former 'ffmpeg'
 package.