Flutter Dart : How to extract youtube video ID from video URL?

Issue

How to use dart regex to extract YouTube video ID from video URL?

Example URL

https://www.youtube.com/watch?v=SEkUienM2oY&t=1265s

or

https://m.youtube.com/watch?v=SEkUienM2oY&t=1265s

Return

SEkUienM2oY&t=1265s

Its working for me

  String getVideoID(String url) {
    url = url.replaceAll("https://www.youtube.com/watch?v=", "");
    url = url.replaceAll("https://m.youtube.com/watch?v=", "");
    return url;
  }

but how to do this with Regex??

Solution

If all our URLs are similar to our input string in the question, we can simply just extract those IDs with an expression similar to:

.*\?v=(.+?)&.+

and our desired output is in this capturing group: (.+?)

Demo

Reference

It seems we'd have 11 alphanumeric chars [A-Za-z0-9]{11} for that ID. That might be something unique if you'd want to design sophisticated expressions:

• PHP Regex to get youtube video ID?

• How do I get the YouTube video ID from a URL?

• RegEx pattern to get the YouTube video ID from any YouTube URL

• Validating Youtube URL using Regex

• Regular expression for YouTube video Id

• Regex for youtube URL

Answered By - Emma