/usr/lib/x86_64-linux-gnu/pkgconfig/gstreamer-vaapi-x11-1.2.pc is in libgstreamer-vaapi1.0-dev 0.5.7-0ubuntu4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 | prefix=/usr
exec_prefix=${prefix}
libdir=${prefix}/lib/x86_64-linux-gnu
includedir=${prefix}/include/gstreamer-1.2
pluginsdir=${prefix}/lib/x86_64-linux-gnu/gstreamer-1.2
Name: GStreamer VA-API (X11) Plugins Libraries
Description: Streaming media framework, VA-API (X11) plugins libraries
Requires: gstreamer-vaapi-1.2 libva-x11
Version: 0.5.7
Libs: -L${libdir} -lgstvaapi-x11-1.2
Cflags: -I${includedir}
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