Watched a video on internet, liked it, want to download it. There you get stuck.
Now, here’s a simple solution to your question,
Step 1: Copy the video URL
(You can copy it by right clicking on the video or by copying it from the URL bar at the top of the browser)
Step 2: Visit the below mentioned website
Step 3: Paste the previously copied URL
Step 4: Right click & select Save link as…
And you are done with it,
Now watch your favourite video anytime and anywhere without buffering.
Note: The above mentioned method is works even on sites like Dailmotion, Metacafe.com, etc.