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

    <video_stream_descriptor
        multiple_frame_rate="bool, required"
        frame_rate_code="uint4, required"
        MPEG_1_only="bool, required"
        constrained_parameter="bool, required"
        still_picture="bool, required"
        profile_and_level_indication="uint8, required when MPEG_1_only='false'"
        chroma_format="uint2, required when MPEG_1_only='false'"
        frame_rate_extension="bool, required when MPEG_1_only='false'"/>

  </_descriptors>
</tsduck>
