Get youtube or Vimeo video Id from Video link

Vimeo share video link looks like:

YouTube share video link looks like:

I want people to enter this into my website and I'll embed it using their embed code and just replacing the last (id) part with their values (that gets stored in a DB).

I can parse these out by taking the last values after the last slash "/". I can tell what site they are from based on if "vimeo" is in the string. My question is, am I opening myself up to any security issues by doing this? Is there anything a person could do to exploit this system that anyone can think of?

Are there any libraries out there for validation that maybe I'm not aware of?

Solution

Yes I have a same problem few months ago and I have made this function to get video id for youtube and Vimeo..

Here is your Solution..

function Getvideoid(videolink)

var regExp = /^.*((youtu.be\/)|(v\/)|(\/u\/\w\/)|(embed\/)|(watch\?))\??v?=?([^#\&\?]*).*/;
var match = videolink.match(regExp);

  if (match && match[7].length == 11) 
    {
      alert("youtube video id : "+ match[7]);      
      return;
    }
    regExp = "vimeo\\.com/(?:.*#|.*/videos/)?([0-9]+)";
    match = videolink.match(regExp);
    if(match)
      {
       var videoid = videolink.split('/')[videolink.split('/').length - 1];
        alert("vimeo video id :"+videoid);
      }

 else 
  {
    alert("Unknown url");
  }

and here is JSBIN Link http://jsbin.com/zoxicoko/2/