The different types of TOC entries (see gstreamer.TocEntry).
There are two types of TOC entries: alternatives or parts in a sequence.
entry is an angle (i.e. an alternative)
entry is a version (i.e. alternative)
entry is an edition (i.e. alternative)
invalid entry type value
entry is a title (i.e. a part of a sequence)
entry is a track (i.e. a part of a sequence)
entry is a chapter (i.e. a part of a sequence)