theTimeRecord.scale = ::GetMovieTimeScale(m_movie);
theTimeRecord.base = ::GetMovieTimeBase(m_movie);
::SetMovieTime(m_movie, &theTimeRecord);
theTimeRecord.scale = ::GetMovieTimeScale(m_movie);
theTimeRecord.base = ::GetMovieTimeBase(m_movie);
::SetMovieTime(m_movie, &theTimeRecord);