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

<plugin>
  <name>videomeasure</name>
  <description>Various video measurers</description>
  <filename>../../gst/videomeasure/.libs/libgstvideomeasure.so</filename>
  <basename>libgstvideomeasure.so</basename>
  <version>0.10.21.1</version>
  <license>LGPL</license>
  <source>gst-plugins-bad</source>
  <package>GStreamer Bad Plug-ins git</package>
  <origin>Unknown package origin</origin>
  <elements>
    <element>
      <name>measurecollector</name>
      <longname>Video measure collector</longname>
      <class>Filter/Effect/Video</class>
      <description>Collect measurements from a measuring element</description>
      <author>Руслан Ижбулатов &lt;lrn _at_ gmail _dot_ com&gt;</author>
      <pads>
        <caps>
          <name>sink</name>
          <direction>sink</direction>
          <presence>always</presence>
          <details>ANY</details>
        </caps>
        <caps>
          <name>src</name>
          <direction>source</direction>
          <presence>always</presence>
          <details>ANY</details>
        </caps>
      </pads>
    </element>
    <element>
      <name>ssim</name>
      <longname>SSim</longname>
      <class>Filter/Analyzer/Video</class>
      <description>Calculate Y-SSIM for n+2 YUV video streams</description>
      <author>Руслан Ижбулатов &lt;lrn1986 _at_ gmail _dot_ com&gt;</author>
      <pads>
        <caps>
          <name>modified%d</name>
          <direction>sink</direction>
          <presence>request</presence>
          <details>video/x-raw-yuv, format=(fourcc){ I420, YV12, Y41B, Y42B }</details>
        </caps>
        <caps>
          <name>original</name>
          <direction>sink</direction>
          <presence>request</presence>
          <details>video/x-raw-yuv, format=(fourcc){ I420, YV12, Y41B, Y42B }</details>
        </caps>
        <caps>
          <name>src%d</name>
          <direction>source</direction>
          <presence>sometimes</presence>
          <details>video/x-raw-gray, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ], bpp=(int)8, depth=(int)8</details>
        </caps>
      </pads>
    </element>
  </elements>
</plugin>