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

<plugin>
  <name>gamma</name>
  <description>Changes gamma on video images</description>
  <filename>../../gst/videofilter/.libs/libgstgamma.so</filename>
  <basename>libgstgamma.so</basename>
  <version>0.10.13.1</version>
  <license>LGPL</license>
  <source>gst-plugins-good</source>
  <package>GStreamer Good Plug-ins CVS/prerelease</package>
  <origin>http://gstreamer.freedesktop.org</origin>
  <elements>
    <element>
      <name>gamma</name>
      <longname>Video gamma correction</longname>
      <class>Filter/Effect/Video</class>
      <description>Adjusts gamma on a video stream</description>
      <author>Arwed v. Merkatz &lt;v.merkatz@gmx.net</author>
      <pads>
        <caps>
          <name>src</name>
          <direction>source</direction>
          <presence>always</presence>
          <details>video/x-raw-yuv, format=(fourcc){ IYUV, I420, YV12 }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</details>
        </caps>
        <caps>
          <name>sink</name>
          <direction>sink</direction>
          <presence>always</presence>
          <details>video/x-raw-yuv, format=(fourcc){ IYUV, I420, YV12 }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</details>
        </caps>
      </pads>
    </element>
  </elements>
</plugin>