/etc/apparmor.d/abstractions/gstreamer is in apparmor-profiles-extra 1.4.
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 13 14 15 | # vim:syntax=apparmor
#include <abstractions/p11-kit>
/etc/udev/udev.conf r,
# /dev/shm is a symlink to /run/shm on ubuntu
owner /{dev,run}/shm/shmfd-* rw,
/run/udev/data/+pci:* r,
/sys/devices/pci[0-9]*/**/{busnum,devnum,descriptors,speed,uevent} r,
owner /tmp/orcexec.* mrw,
owner /{,var/}run/user/[0-9]*/orcexec.* mrw,
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