void mltInsertSpace(QMap <int, int> trackClipStartList, QMap <int, int> trackTransitionStartList, int track, const GenTime &duration, const GenTime &timeOffset);
int mltGetSpaceLength(const GenTime &pos, int track, bool fromBlankStart);
/** @brief Returns the duration/length of @param track as reported by the track producer. */
int mltTrackDuration(int track);
void mltInsertSpace(QMap <int, int> trackClipStartList, QMap <int, int> trackTransitionStartList, int track, const GenTime &duration, const GenTime &timeOffset);
int mltGetSpaceLength(const GenTime &pos, int track, bool fromBlankStart);
/** @brief Returns the duration/length of @param track as reported by the track producer. */
int mltTrackDuration(int track);