getting the youtube id from a link

Question

I got this code to get the youtube id from the links like www.youtube.com/watch?v=xxxxxxx

  URL youtubeURL = new URL(link);
  youtubeURL.getQuery();

basically this will get me the id easily v=xxxxxxxx

but I noticed sometime youtube links will be like this

http://gdata.youtube.com/feeds/api/videos/xxxxxx

I am getting the links from a feed so do I need to build a regex for that or theres a parser to get that for me ?

Answer 1

public static String getYoutubeVideoId(String youtubeUrl)
 {
 String video_id="";
  if (youtubeUrl != null && youtubeUrl.trim().length() > 0 && youtubeUrl.startsWith("http"))
 {

String expression = "^.*((youtu.be"+ "\\/)" + "|(v\\/)|(\\/u\\/w\\/)|(embed\\/)|(watch\\?))\\??v?=?([^#\\&\\?]*).*"; // var regExp = /^.*((youtu.be\/)|(v\/)|(\/u\/\w\/)|(embed\/)|(watch\?))\??v?=?([^#\&\?]*).*/;
 CharSequence input = youtubeUrl;
 Pattern pattern = Pattern.compile(expression,Pattern.CASE_INSENSITIVE);
 Matcher matcher = pattern.matcher(input);
 if (matcher.matches())
 {
String groupIndex1 = matcher.group(7);
 if(groupIndex1!=null && groupIndex1.length()==11)
 video_id = groupIndex1;
 }
 }
 return video_id;
 }

Answer 2

Without knowing the complete specification for all the possible YouTube URLs, this seems to work for the examples you provided:

//*EDIT* - fixed to hopefully support more recent youtube link styles/formats:
(?<=watch\?v=|/videos/|/embed/|youtu.be/)[^&#?]*

... matches PjDw3azfZWI from either of these URLS:

http://www.youtube.com/watch?v=PjDw3azfZWI#t=31m08s
http://gdata.youtube.com/feeds/api/videos/PjDw3azfZWI

You would need a little more to get that particular info if you did not know that these were from youtube, though that's a pretty quick check

Keep in mind that if you are trying to use only the result of the getQuery() method, it will not be possible to extract the result from the http://gdata.youtube.com/feeds/api/videos/PjDw3azfZWI URL, as this URL does not have a query part to it...

Java Example:

Pattern rex = Pattern.compile("(?<=watch\\?v=|/videos/)[^&#]*");
Matcher m = rex.matcher(link);
String YouTubeVideoID = m.group();

Answer 3

This doesn't use a regex but should still do the job.

/**
 * Returns the video id of a YouTube watch link.
 */
public static String getVideoId(String watchLink)
{
    return watchLink.substring(watchLink.length() - 11);
}

Answer 4

Tried the other ones but failed in my case - adjusted the regex to fit for my urls

String pattern = "(?<=watch\\?v=|/videos/|embed\\/)[^#\\&\\?]*";

    Pattern compiledPattern = Pattern.compile(pattern);
    Matcher matcher = compiledPattern.matcher(url);

    if(matcher.find()){
        return matcher.group();
    }

This one works for: (you could also implement a security check youtubeid length = 11 )

http://www.youtube.com/embed/Woq5iX9XQhA?html5=1

http://www.youtube.com/watch?v=384IUU43bfQ

http://gdata.youtube.com/feeds/api/videos/xTmi7zzUa-M&whatever

Woq5iX9XQhA

384IUU43bfQ

xTmi7zzUa-M

Answer 5

That pattern worked for me:

"http(?:s?)://(?:www\.)?youtu(?:be\.com/watch\?v=|\.be/)([\w\-]+)(&(amp;)?[\w\?=‌​]*)?"

source: Regular expression for youtube links

Answer 6

This regex would do the trick:

(?<=videos\/|v=)([\w-]+)

This means that we're first looking for video/ or v= then captures all the following characters that can be in word (letters, digits, and underscores) and hyphens.

Example in java:

public static void main(String[] args) {

    String link = "http://gdata.youtube.com/feeds/api/videos/xTmi7zzUa-M&whatever";
    String pattern = "(?:videos\\/|v=)([\\w-]+)";

    Pattern compiledPattern = Pattern.compile(pattern);
    Matcher matcher = compiledPattern.matcher(link);

    if(matcher.find()){
        System.out.println(matcher.group());
    }
}

Output:

xTmi7zzUa-M