Question: I have a requirement of recording video via web cam, on my webpage. What are the available plugins for the same. My website is developed using Ruby on Rails framework

Regards,
Pankaj

Answer: 
If an HTML5 solution could be suitable for you, you can take a look to WebRTC (currently supported in Chrome, Firefox and Opera).

You can find a good tutorial here:
<http://www.html5rocks.com/en/tutorials/getusermedia/intro/>
The first hit on searching "webcam plugin": <http://www.xarg.org/project/jquery-webcam-plugin/>
As it is using JavaScript it is easy to include in Rails.

Many others appear in the results ...