m_parameters.setAttribute("start", startPos().frames(m_fps));
m_parameters.setAttribute("end", endPos().frames(m_fps));
m_parameters.setAttribute("force_track", m_forceTransitionTrack);
m_parameters.setAttribute("start", startPos().frames(m_fps));
m_parameters.setAttribute("end", endPos().frames(m_fps));
m_parameters.setAttribute("force_track", m_forceTransitionTrack);