//Q_ASSERT(model->m_subtitleList.count(start)==0); //returns warning if sub at start time position already exists ,i.e. count !=0
if(m_subtitleList[start].first==str){
if(m_subtitleList[start].first==str){
qDebug()<<"already present in model"<<"string :"<<m_subtitleList[start].first<<" start time "<<start.frames(pCore->getCurrentFps())<<"end time : "<<m_subtitleList[start].second.frames(pCore->getCurrentFps());