, _line_spacing (node->optional_number_child<double>("LineSpacing").get_value_or (1))
, _fade_in (node->optional_number_child<Frame>("SubtitleFadeIn").get_value_or (0))
, _fade_out (node->optional_number_child<Frame>("SubtitleFadeOut").get_value_or (0))
, _line_spacing (node->optional_number_child<double>("LineSpacing").get_value_or (1))
, _fade_in (node->optional_number_child<Frame>("SubtitleFadeIn").get_value_or (0))
, _fade_out (node->optional_number_child<Frame>("SubtitleFadeOut").get_value_or (0))