extern std::string cpu_info ();
extern void run_ffprobe (boost::filesystem::path, boost::filesystem::path);
extern std::list<std::pair<std::string, std::string> > mount_info ();
extern std::string cpu_info ();
extern void run_ffprobe (boost::filesystem::path, boost::filesystem::path);
extern std::list<std::pair<std::string, std::string> > mount_info ();
extern uint64_t thread_id ();
extern int avio_open_boost (AVIOContext** s, boost::filesystem::path file, int flags);
extern boost::filesystem::path home_directory ();
extern uint64_t thread_id ();
extern int avio_open_boost (AVIOContext** s, boost::filesystem::path file, int flags);
extern boost::filesystem::path home_directory ();