C# regex to get video id from youtube and vimeo by url

Question

I\'m busy trying to create two regular expressions to filter the id from youtube and vimeo video\'s. I\'ve already got the following expressions;

YouTube: (y         


        

Answer 1

I had a play around with the examples and came up with these:

Youtube: youtu(?:\.be|be\.com)/(?:.*v(?:/|=)|(?:.*/)?)([a-zA-Z0-9-_]+)
Vimeo: vimeo\.com/(?:.*#|.*/videos/)?([0-9]+)

And they should match all those given. The (?: ...) means that everything inside the bracket won't be captured. So only the id should be obtained.

I'm a bit of a regex novice myself, so don't be surprised if someone else comes in here screaming not to listen to me, but hopefully these will be of help.

I find this website extremely useful in working out the patterns: http://www.regexpal.com/

Edit:

get the id like so:

string url = ""; //url goes here!

Match youtubeMatch = YoutubeVideoRegex.Match(url);
Match vimeoMatch = VimeoVideoRegex.Match(url);

string id = string.Empty;

if (youtubeMatch.Success)
    id = youtubeMatch.Groups[1].Value; 

if (vimeoMatch.Success)
    id = vimeoMatch.Groups[1].Value;

That works in plain old c#.net, can't vouch for asp.net

Answer 2

In case you are writing some application with view model (e.g. ASP.NET MVC):

public string YouTubeUrl { get; set; }

public string YouTubeVideoId
{
    get
    {
        var youtubeMatch =
            new Regex(@"youtu(?:\.be|be\.com)/(?:.*v(?:/|=)|(?:.*/)?)([a-zA-Z0-9-_]+)")
            .Match(this.YouTubeUrl);
        return youtubeMatch.Success ? youtubeMatch.Groups[1].Value : string.Empty;
    }
}

Answer 3

Vimeo:

vimeo\.com/(?:.*#|.*/)?([0-9]+)