Actually you can just use Houlo Video Downloader to bulk download videos from Nicovideo (nico nico douga) without waiting so long.
If you don't have a NicoNico account you need to sign up a new account first. Once done, launch the software and navigate to "Settings" page, click on "www.nicovide.jp" in the list and input your NicoNico login email/password in the right side fields, click "Save Changes". Then you can start downloading the video immediately.
You guys can download it here: http://houlo.com/houlo-video-downloader
Not working anymore...
If you don't have a NicoNico account you need to sign up a new account first. Once done, launch the software and navigate to "Settings" page, click on "www.nicovide.jp" in the list and input your NicoNico login email/password in the right side fields, click "Save Changes". Then you can start downloading the video immediately.
You guys can download it here:
http://houlo.com/houlo-video-downloader