<?xml version="1.0" encoding="UTF-8"?>
<tsduck>
  <_descriptors>

    <subtitling_descriptor>
      <!-- One per subtitle -->
      <subtitling language_code="char3, required"
                  subtitling_type="uint8, required"
                  composition_page_id="uint16, required"
                  ancillary_page_id="uint16, required"/>
    </subtitling_descriptor>

  </_descriptors>
</tsduck>
