+ string frame_dir = global_flags.working_directory + "/frames";
+
+ struct stat st;
+ if (stat(frame_dir.c_str(), &st) == -1) {
+ fprintf(stderr, "%s does not exist, creating it.\n", frame_dir.c_str());
+ if (mkdir(frame_dir.c_str(), 0777) == -1) {
+ perror(global_flags.working_directory.c_str());
+ exit(1);
+ }
+ }
+