FLV downloader by enter URL. anyone knows a tool?

I want to download videos from putlocker.com, shockshare.com and novamov.com
Do anyone know a software tool for that?
I want to download by enter ther URl only. I cant open the web page. So tell me do you know any software allows me to download videos by just entering the url only.

i have tried keepvid,clipnabber,savevideo etc. but no use. they dont support these sites.
IDM I tried. The fact is i dont want to stream it online and download. i can't open the web page.
thats why i want a software tool. add the url of video ad then download it.