/usr/ is in libavcodec-dev 7:2.8.6-1ubuntu2.
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/usr/lib/x86_64-linux-gnu/
/usr/lib/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/libavcodec-ffmpeg.pc
/usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.a
/usr/include/
/usr/include/x86_64-linux-gnu/
/usr/include/x86_64-linux-gnu/libavcodec/
/usr/include/x86_64-linux-gnu/libavcodec/d3d11va.h
/usr/include/x86_64-linux-gnu/libavcodec/old_codec_ids.h
/usr/include/x86_64-linux-gnu/libavcodec/videotoolbox.h
/usr/include/x86_64-linux-gnu/libavcodec/vdpau.h
/usr/include/x86_64-linux-gnu/libavcodec/dxva2.h
/usr/include/x86_64-linux-gnu/libavcodec/xvmc.h
/usr/include/x86_64-linux-gnu/libavcodec/vaapi.h
/usr/include/x86_64-linux-gnu/libavcodec/version.h
/usr/include/x86_64-linux-gnu/libavcodec/vda.h
/usr/include/x86_64-linux-gnu/libavcodec/avcodec.h
/usr/include/x86_64-linux-gnu/libavcodec/vorbis_parser.h
/usr/include/x86_64-linux-gnu/libavcodec/dv_profile.h
/usr/include/x86_64-linux-gnu/libavcodec/avfft.h
/usr/include/x86_64-linux-gnu/libavcodec/qsv.h
/usr/share/
/usr/share/doc/
/usr/share/doc/libavcodec-dev/
/usr/share/doc/libavcodec-dev/copyright
/usr/lib/x86_64-linux-gnu/libavcodec.a
/usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so
/usr/lib/x86_64-linux-gnu/pkgconfig/libavcodec.pc
/usr/lib/x86_64-linux-gnu/libavcodec.so
/usr/share/doc/libavcodec-dev/changelog.Debian.gz