fprintf(stderr, " -h, --height output height in pixels (default 720)\n");
fprintf(stderr, " --slow-down-input slow down input to realtime (default on if no\n");
fprintf(stderr, " source URL given)\n");
fprintf(stderr, " -h, --height output height in pixels (default 720)\n");
fprintf(stderr, " --slow-down-input slow down input to realtime (default on if no\n");
fprintf(stderr, " source URL given)\n");