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

    <HEVC_hierarchy_extension_descriptor
        extension_dimension_bits="uint16, required"
        hierarchy_layer_index="uint6, required"
        temporal_id="uint3, required"
        nuh_layer_id="uint6, required"
        tref_present="bool, required"
        hierarchy_channel="uint6, required">
      <embedded_layer hierarchy_layer_index="uint6, required"/>
    </HEVC_hierarchy_extension_descriptor>

  </_descriptors>
</tsduck>
