- framecnt_t const extra = UIConfiguration::instance().get_extra_ui_extents_time() * 60 * _session->nominal_frame_rate();
- session_extent_end += extra;
- session_extent_start -= extra;
-
+ if (use_extra) {
+ framecnt_t const extra = UIConfiguration::instance().get_extra_ui_extents_time() * 60 * _session->nominal_frame_rate();
+ session_extent_end += extra;
+ session_extent_start -= extra;
+ }
+