/usr/lib/x86_64-linux-gnu/ is in libgstreamer-plugins-bad1.0-dev 1.14.0-1ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/gstreamer-bad-audio-1.0.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/gstreamer-bad-video-1.0.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/gstreamer-codecparsers-1.0.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/gstreamer-insertbin-1.0.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/gstreamer-mpegts-1.0.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/gstreamer-player-1.0.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/gstreamer-plugins-bad-1.0.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/gstreamer-webrtc-1.0.pc
/usr/lib/x86_64-linux-gnu/libgstadaptivedemux-1.0.so
/usr/lib/x86_64-linux-gnu/libgstbadaudio-1.0.so
/usr/lib/x86_64-linux-gnu/libgstbadvideo-1.0.so
/usr/lib/x86_64-linux-gnu/libgstcodecparsers-1.0.so
/usr/lib/x86_64-linux-gnu/libgstinsertbin-1.0.so
/usr/lib/x86_64-linux-gnu/libgstisoff-1.0.so
/usr/lib/x86_64-linux-gnu/libgstmpegts-1.0.so
/usr/lib/x86_64-linux-gnu/libgstopencv-1.0.so
/usr/lib/x86_64-linux-gnu/libgstplayer-1.0.so
/usr/lib/x86_64-linux-gnu/libgsturidownloader-1.0.so
/usr/lib/x86_64-linux-gnu/libgstwayland-1.0.so
/usr/lib/x86_64-linux-gnu/libgstwebrtc-1.0.so