double dar() const;
/** Playlist manipulation */
+ Mlt::Producer *checkSlowMotionProducer(Mlt::Producer *prod, QDomElement element);
int mltInsertClip(ItemInfo info, QDomElement element, Mlt::Producer *prod, bool overwrite = false, bool push = false);
bool mltUpdateClip(ItemInfo info, QDomElement element, Mlt::Producer *prod);
void mltCutClip(int track, GenTime position);