==== EVC_video_descriptor

Defined by MPEG in <<ISO-13818-1>>.

[source,xml]
----
<EVC_video_descriptor
    profile_idc="uint8, required"
    level_idc="uint8, required"
    toolset_idc_h="uint32, required"
    toolset_idc_l="uint32, required"
    progressive_source_flag="bool, required"
    interlaced_source_flag="bool, required"
    non_packed_constraint_flag="bool, required"
    frame_only_constraint_flag="bool, required"
    EVC_still_present_flag="bool, required"
    EVC_24hr_picture_present_flag="bool, required"
    HDR_WCG_idc="uint2, default=3"
    video_properties_tag="uint4, default=0"
    temporal_id_min="uint3, optional, specify both min and max or none"
    temporal_id_max="uint3, optional, specify both min and max or none"/>
----
