This class represents the media clip data mh/be dictionary. This is definitively detailed in:.

The ISO PDF Specification, ISO 32000-1:2008 PDF 1.7; Table: 276, page 494.

The ISO PDF Specification, ISO 32000-2:2017 PDF 2.0; Table: 287, page 619.

A media clip data must-honour or best-effort dictionary carries parameters that apply specifically to the media clip data. The BU entry provides a base URL used to resolve relative URLs within the media content.

Parameters in a must-honour dictionary block playback if they cannot be satisfied. The BU base URL is particularly important for media that references relative resources such as stylesheets or sub-clips.

System.Object
    WebSupergoo.ABCpdf14.Elements.Element
       WebSupergoo.ABCpdf14.Elements.MediaClipDataMhBeElement