-AbstractClipItem::AbstractClipItem(const ItemInfo info, const QRectF& rect): QGraphicsRectItem(rect), m_startFade(0), m_endFade(0), m_track(0) {
+AbstractClipItem::AbstractClipItem(const ItemInfo info, const QRectF& rect, double fps): QGraphicsRectItem(rect), m_startFade(0), m_endFade(0), m_track(0), m_fps(fps) {