- const Meter& m = _mtv.session()->tempo_map().meter_at (step_edit_insert_position);
- const Tempo& t = _mtv.session()->tempo_map().tempo_at (step_edit_insert_position);
-
- double baf = _mtv.session()->tempo_map().beat_at_frame (step_edit_insert_position);
+ const Meter& m = _mtv.session()->tempo_map().meter_at_frame (step_edit_insert_position);
+ double baf = max (0.0, _mtv.session()->tempo_map().beat_at_frame (step_edit_insert_position));