Variable

Gst-1.0GstTAG_EXTENDED_COMMENTConst

TAG_EXTENDED_COMMENT: string

key/value text commenting the data (string)

Must be in the form of 'key=comment' or 'key[lc]=comment' where 'lc' is an ISO-639 language code.

This tag is used for unknown Vorbis comment tags, unknown APE tags and certain ID3v2 comment fields.