std::string video_dest_dir (const std::string, const std::string);
std::string video_dest_file (const std::string, const std::string);
std::string strip_file_extension (const std::string infile);
std::string video_dest_dir (const std::string, const std::string);
std::string video_dest_file (const std::string, const std::string);
std::string strip_file_extension (const std::string infile);