libavcodec-dev 4:0.5.9-0ubuntu0.10.04.3 (amd64 binary) in ubuntu lucid

 This is the codec library from the ffmpeg project. It supports most existing
 encoding formats (MPEG, DivX, MPEG4, AC3, DV...).
 .
 This package contains the header files and static libraries needed to
 compile applications or shared objects that use libavcodec.