Question

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Regex to parse youtube yid

your probably thinking not another one, but here i have a jquery regex which i find it works fine on the majority of urls accpet one example at bottom:

http://www.youtube.com/watch?v=0zM3nApSvMg&feature=feedrec_grec_index
http://www.youtube.com/user/IngridMichaelsonVEVO#p/a/u/1/QdK8U-VIH_o
https://youtube.com/watch?v=0zM3nApSvMg%3Ffs%3D1%26amp%3Bhl%3Den_US%26amp%3Brel%3D0

https://youtube.com/watch?v=0zM3nApSvMg%3Frel%3D0

the regex

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

but this cannot extract the id from the url below (in this example the id is pa14VNsdSYM)

http://www.youtube.com/watch?feature=endscreen&NR=1&v=pa14VNsdSYM

how can using the regex can i extract the id from urls such as the one above.

Answer 1

The youtube url id always contains 11 characters numbers underscores and/or dashes. This is the regexp i’ve used and haven’t had issues with:

var re = /[a-zA-Z0-9\-\_]{11}/;
var youtubeurl = "http://www.youtube.com/watch?v=0zM3nApSvMg&feature=feedrec_grec_index";
alert(youtubeurl.match(re));

Edit: this solution doesn’t actually work 100%, the first and second url’s will have issues because the regexp matches text that isn’t the vid id.

Edit2: try this one:

var re = /(\?v=|\/\d\/|\/embed\/|\/v\/|\.be\/)([a-zA-Z0-9\-\_]+)/;
var urlArr = [
    "http://www.youtube.com/watch?v=0zM3nApSvMg&feature=feedrec_grec_index",
    "http://www.youtube.com/user/IngridMichaelsonVEVO#p/a/u/1/QdK8U-VIH_o",
    "http://www.youtube.com/v/0zM3nApSvMg?fs=1&hl=en_US&rel=0",
    "http://www.youtube.com/watch?v=0zM3nApSvMg#t=0m10s",
    "http://www.youtube.com/embed/0zM3nApSvMg?rel=0",
    "http://www.youtube.com/watch?v=0zM3nApSvMg",
    "http://youtu.be/0zM3nApSvMg"                  
];
for (var i = 0; i < urlArr.length; i++) {
    alert(urlArr[i].match(re)[2]);
}

http://jsfiddle.net/HfqmE/1/