public static void loadVideoInfo() {
		checkUSB();
		System.out.println("start to load videos' info from usb");
		String rootPath = USBConfig.drivePath;
		String videonewFolder = rootPath + USBConfig.VIDEO_NEW_FOLDER + "\\";

		System.out.println(videonewFolder);

		File videoFilesPath = new File(videonewFolder);
		if (!videoFilesPath.exists()) {
			videoFilesPath.mkdirs();
		}
		File[] videos = videoFilesPath.listFiles();
		Video v = null;
		for (File f : videos) {
			System.out.println(f.getName());
			if (USBConfig.EXTS.contains(StringUtils.getSuffixWithoutDot(f
					.getName()))) {
				String name = f.getName();
				String ext = name.substring(name.lastIndexOf("."),
						name.length());
				String path = f.getAbsolutePath();
				String size = String.valueOf((f.length() / 1024 / 1024));
				String updateDate = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss")
						.format(new Date(f.lastModified()));
				v = new Video(name, ext, path, size, updateDate);
				VideoDao.instance().addVideo(v);
			}
		}
	}