regex101: Youtube Updated 2018 Python

^start of line

Non-Capturing Group(?:(?:https?:\/\/)?(?:(?:www|s|i2)\.)?(?:youtu\.?be|ytimg)(?:\.com)?\/)

Non-Capturing Group(?:https?:\/\/)?

?repeats the group contents below at most once:

httpthe literal text http (case sensitive)

s?optionally matches the literal s (115₁₀ / 163₈ / 73₁₆) (case sensitive)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Non-Capturing Group(?:(?:www|s|i2)\.)?

?repeats the group contents below at most once:

Non-Capturing Group(?:www|s|i2)

1st Alternativewww

wwwthe literal text www (case sensitive)

2nd Alternatives

sthe literal s (115₁₀ / 163₈ / 73₁₆) (case sensitive)

3rd Alternativei2

i2the literal text i2 (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Non-Capturing Group(?:youtu\.?be|ytimg)

1st Alternativeyoutu\.?be

yoututhe literal text youtu (case sensitive)

\.?optionally matches the literal . (46₁₀ / 56₈ / 2E₁₆)

bethe literal text be (case sensitive)

2nd Alternativeytimg

ytimgthe literal text ytimg (case sensitive)

Non-Capturing Group(?:\.com)?

?repeats the group contents below at most once:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

comthe literal text com (case sensitive)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Non-Capturing Group(?:watch\?v=|v\/|yt\/favicon|oembed\?|vi\/)?

?repeats the group contents below at most once:

1st Alternativewatch\?v=

watchthe literal text watch (case sensitive)

\?the literal ? (63₁₀ / 77₈ / 3F₁₆)

v=the literal text v= (case sensitive)

2nd Alternativev\/

vthe literal v (118₁₀ / 166₈ / 76₁₆) (case sensitive)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

3rd Alternativeyt\/favicon

ytthe literal text yt (case sensitive)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

faviconthe literal text favicon (case sensitive)

4th Alternativeoembed\?

oembedthe literal text oembed (case sensitive)

\?the literal ? (63₁₀ / 77₈ / 3F₁₆)

5th Alternativevi\/

vithe literal text vi (case sensitive)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Non-Capturing Group(?:url=http%3A\/\/www\.youtube\.com\/watch\?v%3D)?

?repeats the group contents below at most once:

url=http%3Athe literal text url=http%3A (case sensitive)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

wwwthe literal text www (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

youtubethe literal text youtube (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

comthe literal text com (case sensitive)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

watchthe literal text watch (case sensitive)

\?the literal ? (63₁₀ / 77₈ / 3F₁₆)

v%3Dthe literal text v%3D (case sensitive)

Group 1([a-zA-Z0-9_-]*)

Character Class[a-zA-Z0-9_-]*

*matches any number of characters from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

0-9one character from 0 (48₁₀) to 9 (57₁₀)

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

.*?any Unicode character (except for line terminators), repeated any number of times

$end of line

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Search reference

Regular Expression

^(?:(?:https?:\/\/)?(?:(?:www|s|i2)\.)?(?:youtu\.?be|ytimg)(?:\.com)?\/)(?:watch\?v=|v\/|yt\/favicon|oembed\?|vi\/)?(?:url=http%3A\/\/www\.youtube\.com\/watch\?v%3D)?([a-zA-Z0-9_-]*).*?$

Test String
New

https://www.youtube.com/watch?v=Gge6Hg2-RVM

http://www.youtube.com/watch?v=-wtIMTCHWuI

http://www.youtube.com/v/-wtIMTCHWuI?version=3&autohide=1

http://youtu.be/-wtIMTCHWuI

http://www.youtube.com/oembed?url=http%3A//www.youtube.com/watch?v%3D-wtIMTCHWuI&format=json

http://s.ytimg.com/yt/favicon-wtIMTCHWuI.ico

http://i2.ytimg.com/vi/-wtIMTCHWuI/hqdefault.jpg

Regular Expression

Test StringNew

Test String
New