libav-dbg 6:9.11-2ubuntu2 (arm64 binary) in ubuntu trusty

 Libav is a complete, cross-platform solution to decode, encode, record,
 convert and stream audio and video.
 .
 This package contains debug data of the Libav related shared libraries.
 .
 Most people will not need this package. Please install it to produce useful
 stacktraces to help debugging the Libav library.