Gst.TagSetter.prototype.set_tag_merge_mode

function set_tag_merge_mode(mode:Gst.TagMergeMode):void {
    // Gjs wrapper for gst_tag_setter_set_tag_merge_mode()
}

Sets the given merge mode that is used for adding tags from events to tags specified by this interface. The default is #GST_TAG_MERGE_KEEP, which keeps the tags set with this interface and discards tags from events.