public Option<Stage> worker(MonitorableExecutorService executorService, final MasterIndexFile index, final BitMask cameraMask, final UserNotification user, final Component component, final boolean isTempDelete) throws IOException, InterruptedException {
        Option<Stage> deleteTemporaryFiles = deleteTemporaryFiles(executorService, index, isTempDelete);
        Option<Stage> dvdStage = dvd.isSelected() ? some(dvd(executorService, index, cameraMask, user, deleteTemporaryFiles)) : deleteTemporaryFiles;
        Option<Stage> aviStage = avi.isSelected() ? some(aviOrDvd(executorService, index, cameraMask, new AviFormat(), user, dvdStage)) : dvdStage;
        return evidenceDisc.isSelected() ? some(evidenceDisc(executorService, index, user, component, aviStage)) : aviStage;
    }