Repository: ytdl-org/youtube-dl

Issue:
Site Support on other Nickelodeon country website. (.dk, .no, .se)
## Please follow the guide below

- You will be asked some questions and requested to provide some information, please read them **carefully** and answer honestly
- Put an `x` into all the boxes [ ] relevant to your *issue* (like this: `[x]`)
- Use the *Preview* tab to see what your issue will actually look like

---

### Make sure you are using the *latest* version: run `youtube-dl --version` and ensure your version is *2017.10.20*. If it's not, read [this FAQ entry](https://github.com/rg3/youtube-dl/blob/master/README.md#how-do-i-update-youtube-dl) and update. Issues with outdated version will be rejected.
- [x] I've **verified** and **I assure** that I'm running youtube-dl **2017.10.20**

### Before submitting an *issue* make sure you have:
- [x] At least skimmed through the [README](https://github.com/rg3/youtube-dl/blob/master/README.md), **most notably** the [FAQ](https://github.com/rg3/youtube-dl#faq) and [BUGS](https://github.com/rg3/youtube-dl#bugs) sections
- [x] [Searched](https://github.com/rg3/youtube-dl/search?type=Issues) the bugtracker for similar issues including closed ones

### What is the purpose of your *issue*?
- [ ] Bug report (encountered problems with youtube-dl)
- [x] Site support request (request for adding support for a new site)
- [ ] Feature request (request for a new functionality)
- [ ] Question
- [ ] Other

### If the purpose of this *issue* is a *site support request* please provide all kinds of example URLs support for which should be included (replace following example URLs by **yours**):
- Single video: http://www.nickelodeon.no/program/2626-bulderhuset/videoer/90947-femteklasse-veronica-vs-vanzilla
- Single video: http://www.nickelodeon.dk/serier/2626-hojs-hus/videoer/761-tissepause
- Single video: http://www.nickelodeon.se/serier/2626-lugn-i-stormen/videos/998-


Discussion:

Resolving patch:
diff --git a/youtube_dl/extractor/nick.py b/youtube_dl/extractor/nick.py
--- a/youtube_dl/extractor/nick.py
+++ b/youtube_dl/extractor/nick.py
@@ -75,7 +75,7 @@ def _extract_mgid(self, webpage):
 
 class NickDeIE(MTVServicesInfoExtractor):
     IE_NAME = 'nick.de'
-    _VALID_URL = r'https?://(?:www\.)?(?P<host>nick\.(?:de|com\.pl)|nickelodeon\.(?:nl|at))/[^/]+/(?:[^/]+/)*(?P<id>[^/?#&]+)'
+    _VALID_URL = r'https?://(?:www\.)?(?P<host>nick\.(?:de|com\.pl)|nickelodeon\.(?:nl|at|dk|no|se))/[^/]+/(?:[^/]+/)*(?P<id>[^/?#&]+)'
     _TESTS = [{
         'url': 'http://www.nick.de/playlist/3773-top-videos/videos/episode/17306-zu-wasser-und-zu-land-rauchende-erdnusse',
         'only_matching': True,
@@ -91,6 +91,15 @@ class NickDeIE(MTVServicesInfoExtractor):
     }, {
         'url': 'http://www.nick.com.pl/seriale/474-spongebob-kanciastoporty/wideo/17412-teatr-to-jest-to-rodeo-oszolom',
         'only_matching': True,
+    }, {
+        'url': 'http://www.nickelodeon.no/program/2626-bulderhuset/videoer/90947-femteklasse-veronica-vs-vanzilla',
+        'only_matching': True,
+    }, {
+        'url': 'http://www.nickelodeon.dk/serier/2626-hojs-hus/videoer/761-tissepause',
+        'only_matching': True,
+    }, {
+        'url': 'http://www.nickelodeon.se/serier/2626-lugn-i-stormen/videos/998-',
+        'only_matching': True,
     }]
 
     def _extract_mrss_url(self, webpage, host):


Test patch: