void check_one_frame (boost::filesystem::path dcp, int64_t index, boost::filesystem::path ref);
extern boost::filesystem::path subtitle_file (boost::shared_ptr<Film> film);
extern void make_random_file (boost::filesystem::path path, size_t size);
void check_one_frame (boost::filesystem::path dcp, int64_t index, boost::filesystem::path ref);
extern boost::filesystem::path subtitle_file (boost::shared_ptr<Film> film);
extern void make_random_file (boost::filesystem::path path, size_t size);