This file is indexed.

/etc/apparmor.d/abstractions/video is in apparmor 2.7.102-0ubuntu3.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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# vim:syntax=apparmor
# video device access

  # System devices
  /sys/class/video4linux r,
  /sys/class/video4linux/** r,