gentoo-overlay/media-video/arista/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
  <!-- maintainer-needed -->
  <use>
	<flag name="faac">Use external faac library for AAC encoding</flag>
	<flag name="nautilus">Add an entry in the Nautilus context menu to transcode
		media files for a specified device.</flag>
  </use>
</pkgmetadata>