Seems like FDM is both a download accelerator and a video downloader, but you only look for something to download videos.
I have no personal experience with FDM and it failed to install on my pc,so I can’t help you here. However, you could try Any Video Converter- it is fairly easy to use.
For a download accelerator I heard JDownloader has a good reputation.
In case of a fail you could try an online service, although they tend to lower the quality by a noticeable degree.
Hope I was of any help.
AVC: Audio/Video downloader.
JD: Download accelerator.
Online music ripper:
Online music/video converter:
http://www.ixconverter.net/ - written 1 year, 9 months ago