/usr/ is in libgmerlin-avdec-dev 1.2.0~dfsg-9build2.
This file is owned by root:root, with mode 0o755.
..
/usr/include/
/usr/include/gmerlin/
/usr/include/gmerlin/avdec.h
/usr/include/gmerlin/bgav_version.h
/usr/include/gmerlin/bgavdefs.h
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/gmerlin_avdec.pc
/usr/share/
/usr/share/doc/
/usr/share/doc/libgmerlin-avdec-dev/
/usr/share/doc/libgmerlin-avdec-dev/copyright
/usr/lib/x86_64-linux-gnu/libgmerlin_avdec.so
/usr/share/doc/libgmerlin-avdec-dev/AUTHORS
/usr/share/doc/libgmerlin-avdec-dev/NEWS.gz
/usr/share/doc/libgmerlin-avdec-dev/README
/usr/share/doc/libgmerlin-avdec-dev/changelog.Debian.gz