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

    <vvc_subpictures_descriptor
      default_service_mode="bool, required"
      processing_mode="uint3, required"
      service_description="string, optional">
      <subpicture
        component_tag="uint8, required"
        subpicture_id="uint8, required"/>
    </vvc_subpictures_descriptor>

  </_descriptors>
</tsduck>
