Any standalone analogue of Cent's video grabber?

[Faenza]

Cent has a marvelous video grabber, that can even save full video from sites which send it as small pieces, making ordinary video-saving utilities fail. Still Cant's  video-grabber has 2 down-sides:
1. There is no way to make queue.
Surely one can make several downloads simultaneously, but for some reasons sometimes it results in random "damaged bits" in downloaded video. Don't know what causes that, maybe it's even purely due to say local internet signal quality, still when downloading one video after another was fully grabbed never results in any artifacts/errors. 
2. Browser must be running while download proceeds.
Nowadays browsers eat up resources pretty high, and sometimes it's uncomfortable to keep it running just for the grabber to finish the job.
So may it happen anybody can propose some standalone video grabber, that 
- works same good as Cent's one (mainly with "catching streaming video" as a full one) 
- allows to to choose either to make simultaneous downloads or pre-create queue for download one-by-one
- light on resources (so it would use at least half less resources than usually browser does)
Pardon me if it's not a proper branch for such question, please move the right branch if needed.

I'm using this extension - FetchV.
In my opinion there is a very useful.