-ProjectSettings::ProjectSettings(ProjectList *projectlist, QMap <QString, QString> metadata, QStringList lumas, int videotracks, int audiotracks, const QString &projectPath, bool readOnlyTracks, bool savedProject, QWidget * parent) :
+ProjectSettings::ProjectSettings(ProjectList *projectlist, QMap <QString, QString> metadata, const QStringList &lumas, int videotracks, int audiotracks, const QString &projectPath, bool readOnlyTracks, bool savedProject, QWidget * parent) :