libavcodec-extra 6:11.3-3build1 (i386 binary) in ubuntu wily

 Libav is a complete, cross-platform solution to decode, encode, record,
 convert and stream audio and video.
 .
 This package depends on the latest version of the libavcodec variant
 that offers additional codec support. Application packages can depend
 on it if they require or suggest this variant in a robust manner.