gstreamer/docs/plugins/inspect/plugin-assrender.xml

<plugin>
  <name>assrender</name>
  <description>ASS/SSA subtitle renderer</description>
  <filename>../../ext/assrender/.libs/libgstassrender.so</filename>
  <basename>libgstassrender.so</basename>
  <version>1.1.0.1</version>
  <license>LGPL</license>
  <source>gst-plugins-bad</source>
  <package>GStreamer Bad Plug-ins git</package>
  <origin>Unknown package origin</origin>
  <elements>
    <element>
      <name>assrender</name>
      <longname>ASS/SSA Render</longname>
      <class>Mixer/Video/Overlay/Subtitle</class>
      <description>Renders ASS/SSA subtitles with libass</description>
      <author>Benjamin Schmitz &lt;vortex@wolpzone.de&gt;, Sebastian Dröge &lt;sebastian.droege@collabora.co.uk&gt;</author>
      <pads>
        <caps>
          <name>text_sink</name>
          <direction>sink</direction>
          <presence>always</presence>
          <details>application/x-ass; application/x-ssa</details>
        </caps>
        <caps>
          <name>video_sink</name>
          <direction>sink</direction>
          <presence>always</presence>
          <details>video/x-raw, format=(string){ RGB, BGR, xRGB, xBGR, RGBx, BGRx, I420 }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</details>
        </caps>
        <caps>
          <name>src</name>
          <direction>source</direction>
          <presence>always</presence>
          <details>video/x-raw, format=(string){ RGB, BGR, xRGB, xBGR, RGBx, BGRx, I420 }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</details>
        </caps>
      </pads>
    </element>
  </elements>
</plugin>