Improve some _VALID_URLs

65 files changed, 86 insertions, 86 deletions

diff --git a/youtube_dl/extractor/abc.py b/youtube_dl/extractor/abc.py
index 3792bd232..465249bbf 100644
--- a/youtube_dl/extractor/abc.py
+++ b/youtube_dl/extractor/abc.py
@@ -13,7 +13,7 @@ from ..utils import (
 
 class ABCIE(InfoExtractor):
     IE_NAME = 'abc.net.au'
-    _VALID_URL = r'https?://www\.abc\.net\.au/news/(?:[^/]+/){1,2}(?P<id>\d+)'
+    _VALID_URL = r'https?://(?:www\.)?abc\.net\.au/news/(?:[^/]+/){1,2}(?P<id>\d+)'
 
     _TESTS = [{
         'url': 'http://www.abc.net.au/news/2014-11-05/australia-to-staff-ebola-treatment-centre-in-sierra-leone/5868334',
diff --git a/youtube_dl/extractor/aljazeera.py b/youtube_dl/extractor/aljazeera.py
index b081695d8..388e578d5 100644
--- a/youtube_dl/extractor/aljazeera.py
+++ b/youtube_dl/extractor/aljazeera.py
@@ -4,7 +4,7 @@ from .common import InfoExtractor
 
 
 class AlJazeeraIE(InfoExtractor):
-    _VALID_URL = r'https?://www\.aljazeera\.com/programmes/.*?/(?P<id>[^/]+)\.html'
+    _VALID_URL = r'https?://(?:www\.)?aljazeera\.com/programmes/.*?/(?P<id>[^/]+)\.html'
 
     _TEST = {
         'url': 'http://www.aljazeera.com/programmes/the-slum/2014/08/deliverance-201482883754237240.html',
diff --git a/youtube_dl/extractor/azubu.py b/youtube_dl/extractor/azubu.py
index a813eb429..72e1bd59d 100644
--- a/youtube_dl/extractor/azubu.py
+++ b/youtube_dl/extractor/azubu.py
@@ -103,7 +103,7 @@ class AzubuIE(InfoExtractor):
 
 
 class AzubuLiveIE(InfoExtractor):
-    _VALID_URL = r'https?://www.azubu.tv/(?P<id>[^/]+)$'
+    _VALID_URL = r'https?://(?:www\.)?azubu\.tv/(?P<id>[^/]+)$'
 
     _TEST = {
         'url': 'http://www.azubu.tv/MarsTVMDLen',
diff --git a/youtube_dl/extractor/bbc.py b/youtube_dl/extractor/bbc.py
index deb9cc1c0..b17916137 100644
--- a/youtube_dl/extractor/bbc.py
+++ b/youtube_dl/extractor/bbc.py
@@ -1028,7 +1028,7 @@ class BBCIE(BBCCoUkIE):
 
 
 class BBCCoUkArticleIE(InfoExtractor):
-    _VALID_URL = r'https?://www.bbc.co.uk/programmes/articles/(?P<id>[a-zA-Z0-9]+)'
+    _VALID_URL = r'https?://(?:www\.)?bbc\.co\.uk/programmes/articles/(?P<id>[a-zA-Z0-9]+)'
     IE_NAME = 'bbc.co.uk:article'
     IE_DESC = 'BBC articles'
 
diff --git a/youtube_dl/extractor/bpb.py b/youtube_dl/extractor/bpb.py
index 6ad45a1e6..9661ade4f 100644
--- a/youtube_dl/extractor/bpb.py
+++ b/youtube_dl/extractor/bpb.py
@@ -12,7 +12,7 @@ from ..utils import (
 
 class BpbIE(InfoExtractor):
     IE_DESC = 'Bundeszentrale für politische Bildung'
-    _VALID_URL = r'https?://www\.bpb\.de/mediathek/(?P<id>[0-9]+)/'
+    _VALID_URL = r'https?://(?:www\.)?bpb\.de/mediathek/(?P<id>[0-9]+)/'
 
     _TEST = {
         'url': 'http://www.bpb.de/mediathek/297/joachim-gauck-zu-1989-und-die-erinnerung-an-die-ddr',
diff --git a/youtube_dl/extractor/camdemy.py b/youtube_dl/extractor/camdemy.py
index 268c34392..d4e6fbdce 100644
--- a/youtube_dl/extractor/camdemy.py
+++ b/youtube_dl/extractor/camdemy.py
@@ -112,7 +112,7 @@ class CamdemyIE(InfoExtractor):
 
 
 class CamdemyFolderIE(InfoExtractor):
-    _VALID_URL = r'https?://www.camdemy.com/folder/(?P<id>\d+)'
+    _VALID_URL = r'https?://(?:www\.)?camdemy\.com/folder/(?P<id>\d+)'
     _TESTS = [{
         # links with trailing slash
         'url': 'http://www.camdemy.com/folder/450',
diff --git a/youtube_dl/extractor/cbssports.py b/youtube_dl/extractor/cbssports.py
index bf7915626..3a62c840b 100644
--- a/youtube_dl/extractor/cbssports.py
+++ b/youtube_dl/extractor/cbssports.py
@@ -4,7 +4,7 @@ from .cbs import CBSBaseIE
 
 
 class CBSSportsIE(CBSBaseIE):
-    _VALID_URL = r'https?://www\.cbssports\.com/video/player/[^/]+/(?P<id>\d+)'
+    _VALID_URL = r'https?://(?:www\.)?cbssports\.com/video/player/[^/]+/(?P<id>\d+)'
 
     _TESTS = [{
         'url': 'http://www.cbssports.com/video/player/videos/708337219968/0/ben-simmons-the-next-lebron?-not-so-fast',
diff --git a/youtube_dl/extractor/ceskatelevize.py b/youtube_dl/extractor/ceskatelevize.py
index 5a58d1777..87c2e7089 100644
--- a/youtube_dl/extractor/ceskatelevize.py
+++ b/youtube_dl/extractor/ceskatelevize.py
@@ -17,7 +17,7 @@ from ..utils import (
 
 
 class CeskaTelevizeIE(InfoExtractor):
-    _VALID_URL = r'https?://www\.ceskatelevize\.cz/(porady|ivysilani)/(?:[^/]+/)*(?P<id>[^/#?]+)/*(?:[#?].*)?$'
+    _VALID_URL = r'https?://(?:www\.)?ceskatelevize\.cz/(porady|ivysilani)/(?:[^/]+/)*(?P<id>[^/#?]+)/*(?:[#?].*)?$'
     _TESTS = [{
         'url': 'http://www.ceskatelevize.cz/ivysilani/ivysilani/10441294653-hyde-park-civilizace/214411058091220',
         'info_dict': {
diff --git a/youtube_dl/extractor/chirbit.py b/youtube_dl/extractor/chirbit.py
index b43518652..61aed0167 100644
--- a/youtube_dl/extractor/chirbit.py
+++ b/youtube_dl/extractor/chirbit.py
@@ -65,7 +65,7 @@ class ChirbitIE(InfoExtractor):
 
 class ChirbitProfileIE(InfoExtractor):
     IE_NAME = 'chirbit:profile'
-    _VALID_URL = r'https?://(?:www\.)?chirbit.com/(?:rss/)?(?P<id>[^/]+)'
+    _VALID_URL = r'https?://(?:www\.)?chirbit\.com/(?:rss/)?(?P<id>[^/]+)'
     _TEST = {
         'url': 'http://chirbit.com/ScarletBeauty',
         'info_dict': {
diff --git a/youtube_dl/extractor/cmt.py b/youtube_dl/extractor/cmt.py
index f24568dcc..ac3bdfe8f 100644
--- a/youtube_dl/extractor/cmt.py
+++ b/youtube_dl/extractor/cmt.py
@@ -6,7 +6,7 @@ from ..utils import ExtractorError
 
 class CMTIE(MTVIE):
     IE_NAME = 'cmt.com'
-    _VALID_URL = r'https?://www\.cmt\.com/(?:videos|shows)/(?:[^/]+/)*(?P<videoid>\d+)'
+    _VALID_URL = r'https?://(?:www\.)?cmt\.com/(?:videos|shows)/(?:[^/]+/)*(?P<videoid>\d+)'
     _FEED_URL = 'http://www.cmt.com/sitewide/apps/player/embed/rss/'
 
     _TESTS = [{
diff --git a/youtube_dl/extractor/criterion.py b/youtube_dl/extractor/criterion.py
index dedb810a0..ad32673a8 100644
--- a/youtube_dl/extractor/criterion.py
+++ b/youtube_dl/extractor/criterion.py
@@ -7,7 +7,7 @@ from .common import InfoExtractor
 
 
 class CriterionIE(InfoExtractor):
-    _VALID_URL = r'https?://www\.criterion\.com/films/(?P<id>[0-9]+)-.+'
+    _VALID_URL = r'https?://(?:www\.)?criterion\.com/films/(?P<id>[0-9]+)-.+'
     _TEST = {
         'url': 'http://www.criterion.com/films/184-le-samourai',
         'md5': 'bc51beba55685509883a9a7830919ec3',
diff --git a/youtube_dl/extractor/dctp.py b/youtube_dl/extractor/dctp.py
index 9099f5046..a47e04993 100644
--- a/youtube_dl/extractor/dctp.py
+++ b/youtube_dl/extractor/dctp.py
@@ -6,7 +6,7 @@ from ..compat import compat_str
 
 
 class DctpTvIE(InfoExtractor):
-    _VALID_URL = r'https?://www.dctp.tv/(#/)?filme/(?P<id>.+?)/$'
+    _VALID_URL = r'https?://(?:www\.)?dctp\.tv/(#/)?filme/(?P<id>.+?)/$'
     _TEST = {
         'url': 'http://www.dctp.tv/filme/videoinstallation-fuer-eine-kaufhausfassade/',
         'info_dict': {
diff --git a/youtube_dl/extractor/democracynow.py b/youtube_dl/extractor/democracynow.py
index 65a98d789..bdfe638b4 100644
--- a/youtube_dl/extractor/democracynow.py
+++ b/youtube_dl/extractor/democracynow.py
@@ -13,7 +13,7 @@ from ..utils import (
 
 
 class DemocracynowIE(InfoExtractor):
-    _VALID_URL = r'https?://(?:www\.)?democracynow.org/(?P<id>[^\?]*)'
+    _VALID_URL = r'https?://(?:www\.)?democracynow\.org/(?P<id>[^\?]*)'
     IE_NAME = 'democracynow'
     _TESTS = [{
         'url': 'http://www.democracynow.org/shows/2015/7/3',
diff --git a/youtube_dl/extractor/engadget.py b/youtube_dl/extractor/engadget.py
index a39e9010d..65635c18b 100644
--- a/youtube_dl/extractor/engadget.py
+++ b/youtube_dl/extractor/engadget.py
@@ -4,7 +4,7 @@ from .common import InfoExtractor
 
 
 class EngadgetIE(InfoExtractor):
-    _VALID_URL = r'https?://www.engadget.com/video/(?P<id>[^/?#]+)'
+    _VALID_URL = r'https?://(?:www\.)?engadget\.com/video/(?P<id>[^/?#]+)'
 
     _TESTS = [{
         # video with 5min ID
diff --git a/youtube_dl/extractor/expotv.py b/youtube_dl/extractor/expotv.py
index 971c918a4..ef11962f3 100644
--- a/youtube_dl/extractor/expotv.py
+++ b/youtube_dl/extractor/expotv.py
@@ -8,7 +8,7 @@ from ..utils import (
 
 
 class ExpoTVIE(InfoExtractor):
-    _VALID_URL = r'https?://www\.expotv\.com/videos/[^?#]*/(?P<id>[0-9]+)($|[?#])'
+    _VALID_URL = r'https?://(?:www\.)?expotv\.com/videos/[^?#]*/(?P<id>[0-9]+)($|[?#])'
     _TEST = {
         'url': 'http://www.expotv.com/videos/reviews/3/40/NYX-Butter-lipstick/667916',
         'md5': 'fe1d728c3a813ff78f595bc8b7a707a8',
diff --git a/youtube_dl/extractor/freespeech.py b/youtube_dl/extractor/freespeech.py
index 1477708bb..0a70ca763 100644
--- a/youtube_dl/extractor/freespeech.py
+++ b/youtube_dl/extractor/freespeech.py
@@ -8,7 +8,7 @@ from .common import InfoExtractor
 
 class FreespeechIE(InfoExtractor):
     IE_NAME = 'freespeech.org'
-    _VALID_URL = r'https://www\.freespeech\.org/video/(?P<title>.+)'
+    _VALID_URL = r'https?://(?:www\.)?freespeech\.org/video/(?P<title>.+)'
     _TEST = {
         'add_ie': ['Youtube'],
         'url': 'https://www.freespeech.org/video/obama-romney-campaign-colorado-ahead-debate-0',
diff --git a/youtube_dl/extractor/gamestar.py b/youtube_dl/extractor/gamestar.py
index 341e72733..55a34604a 100644
--- a/youtube_dl/extractor/gamestar.py
+++ b/youtube_dl/extractor/gamestar.py
@@ -9,7 +9,7 @@ from ..utils import (
 
 
 class GameStarIE(InfoExtractor):
-    _VALID_URL = r'https?://www\.gamestar\.de/videos/.*,(?P<id>[0-9]+)\.html'
+    _VALID_URL = r'https?://(?:www\.)?gamestar\.de/videos/.*,(?P<id>[0-9]+)\.html'
     _TEST = {
         'url': 'http://www.gamestar.de/videos/trailer,3/hobbit-3-die-schlacht-der-fuenf-heere,76110.html',
         'md5': '96974ecbb7fd8d0d20fca5a00810cea7',
diff --git a/youtube_dl/extractor/googleplus.py b/youtube_dl/extractor/googleplus.py
index 731bacd67..427499b11 100644
--- a/youtube_dl/extractor/googleplus.py
+++ b/youtube_dl/extractor/googleplus.py
@@ -10,7 +10,7 @@ from ..utils import unified_strdate
 
 class GooglePlusIE(InfoExtractor):
     IE_DESC = 'Google Plus'
-    _VALID_URL = r'https://plus\.google\.com/(?:[^/]+/)*?posts/(?P<id>\w+)'
+    _VALID_URL = r'https?://plus\.google\.com/(?:[^/]+/)*?posts/(?P<id>\w+)'
     IE_NAME = 'plus.google'
     _TEST = {
         'url': 'https://plus.google.com/u/0/108897254135232129896/posts/ZButuJc6CtH',
diff --git a/youtube_dl/extractor/goshgay.py b/youtube_dl/extractor/goshgay.py
index 0c015141f..a43abd154 100644
--- a/youtube_dl/extractor/goshgay.py
+++ b/youtube_dl/extractor/goshgay.py
@@ -11,7 +11,7 @@ from ..utils import (
 
 
 class GoshgayIE(InfoExtractor):
-    _VALID_URL = r'https?://www\.goshgay\.com/video(?P<id>\d+?)($|/)'
+    _VALID_URL = r'https?://(?:www\.)?goshgay\.com/video(?P<id>\d+?)($|/)'
     _TEST = {
         'url': 'http://www.goshgay.com/video299069/diesel_sfw_xxx_video',
         'md5': '4b6db9a0a333142eb9f15913142b0ed1',
diff --git a/youtube_dl/extractor/hark.py b/youtube_dl/extractor/hark.py
index b6cc15b6f..749e9154f 100644
--- a/youtube_dl/extractor/hark.py
+++ b/youtube_dl/extractor/hark.py
@@ -5,7 +5,7 @@ from .common import InfoExtractor
 
 
 class HarkIE(InfoExtractor):
-    _VALID_URL = r'https?://www\.hark\.com/clips/(?P<id>.+?)-.+'
+    _VALID_URL = r'https?://(?:www\.)?hark\.com/clips/(?P<id>.+?)-.+'
     _TEST = {
         'url': 'http://www.hark.com/clips/mmbzyhkgny-obama-beyond-the-afghan-theater-we-only-target-al-qaeda-on-may-23-2013',
         'md5': '6783a58491b47b92c7c1af5a77d4cbee',
diff --git a/youtube_dl/extractor/hotnewhiphop.py b/youtube_dl/extractor/hotnewhiphop.py
index 9db565209..34163725f 100644
--- a/youtube_dl/extractor/hotnewhiphop.py
+++ b/youtube_dl/extractor/hotnewhiphop.py
@@ -12,7 +12,7 @@ from ..utils import (
 
 
 class HotNewHipHopIE(InfoExtractor):
-    _VALID_URL = r'https?://www\.hotnewhiphop\.com/.*\.(?P<id>.*)\.html'
+    _VALID_URL = r'https?://(?:www\.)?hotnewhiphop\.com/.*\.(?P<id>.*)\.html'
     _TEST = {
         'url': 'http://www.hotnewhiphop.com/freddie-gibbs-lay-it-down-song.1435540.html',
         'md5': '2c2cd2f76ef11a9b3b581e8b232f3d96',
diff --git a/youtube_dl/extractor/imdb.py b/youtube_dl/extractor/imdb.py
index 3a6a6f5ad..f0fc8d49a 100644
--- a/youtube_dl/extractor/imdb.py
+++ b/youtube_dl/extractor/imdb.py
@@ -94,7 +94,7 @@ class ImdbIE(InfoExtractor):
 class ImdbListIE(InfoExtractor):
     IE_NAME = 'imdb:list'
     IE_DESC = 'Internet Movie Database lists'
-    _VALID_URL = r'https?://www\.imdb\.com/list/(?P<id>[\da-zA-Z_-]{11})'
+    _VALID_URL = r'https?://(?:www\.)?imdb\.com/list/(?P<id>[\da-zA-Z_-]{11})'
     _TEST = {
         'url': 'http://www.imdb.com/list/JFs9NWw6XI0',
         'info_dict': {
diff --git a/youtube_dl/extractor/karaoketv.py b/youtube_dl/extractor/karaoketv.py
index bad46005b..bfccf89b0 100644
--- a/youtube_dl/extractor/karaoketv.py
+++ b/youtube_dl/extractor/karaoketv.py
@@ -5,7 +5,7 @@ from .common import InfoExtractor
 
 
 class KaraoketvIE(InfoExtractor):
-    _VALID_URL = r'https?://www\.karaoketv\.co\.il/[^/]+/(?P<id>\d+)'
+    _VALID_URL = r'https?://(?:www\.)?karaoketv\.co\.il/[^/]+/(?P<id>\d+)'
     _TEST = {
         'url': 'http://www.karaoketv.co.il/%D7%A9%D7%99%D7%A8%D7%99_%D7%A7%D7%A8%D7%99%D7%95%D7%A7%D7%99/58356/%D7%90%D7%99%D7%96%D7%95%D7%9F',
         'info_dict': {
diff --git a/youtube_dl/extractor/kickstarter.py b/youtube_dl/extractor/kickstarter.py
index c61e78622..fbe499497 100644
--- a/youtube_dl/extractor/kickstarter.py
+++ b/youtube_dl/extractor/kickstarter.py
@@ -6,7 +6,7 @@ from ..utils import smuggle_url
 
 
 class KickStarterIE(InfoExtractor):
-    _VALID_URL = r'https?://www\.kickstarter\.com/projects/(?P<id>[^/]*)/.*'
+    _VALID_URL = r'https?://(?:www\.)?kickstarter\.com/projects/(?P<id>[^/]*)/.*'
     _TESTS = [{
         'url': 'https://www.kickstarter.com/projects/1404461844/intersection-the-story-of-josh-grant/description',
         'md5': 'c81addca81327ffa66c642b5d8b08cab',
diff --git a/youtube_dl/extractor/kuwo.py b/youtube_dl/extractor/kuwo.py
index 0eeb9ffeb..ba621ca7b 100644
--- a/youtube_dl/extractor/kuwo.py
+++ b/youtube_dl/extractor/kuwo.py
@@ -59,7 +59,7 @@ class KuwoBaseIE(InfoExtractor):
 class KuwoIE(KuwoBaseIE):
     IE_NAME = 'kuwo:song'
     IE_DESC = '酷我音乐'
-    _VALID_URL = r'https?://www\.kuwo\.cn/yinyue/(?P<id>\d+)'
+    _VALID_URL = r'https?://(?:www\.)?kuwo\.cn/yinyue/(?P<id>\d+)'
     _TESTS = [{
         'url': 'http://www.kuwo.cn/yinyue/635632/',
         'info_dict': {
@@ -139,7 +139,7 @@ class KuwoIE(KuwoBaseIE):
 class KuwoAlbumIE(InfoExtractor):
     IE_NAME = 'kuwo:album'
     IE_DESC = '酷我音乐 - 专辑'
-    _VALID_URL = r'https?://www\.kuwo\.cn/album/(?P<id>\d+?)/'
+    _VALID_URL = r'https?://(?:www\.)?kuwo\.cn/album/(?P<id>\d+?)/'
     _TEST = {
         'url': 'http://www.kuwo.cn/album/502294/',
         'info_dict': {
@@ -200,7 +200,7 @@ class KuwoChartIE(InfoExtractor):
 class KuwoSingerIE(InfoExtractor):
     IE_NAME = 'kuwo:singer'
     IE_DESC = '酷我音乐 - 歌手'
-    _VALID_URL = r'https?://www\.kuwo\.cn/mingxing/(?P<id>[^/]+)'
+    _VALID_URL = r'https?://(?:www\.)?kuwo\.cn/mingxing/(?P<id>[^/]+)'
     _TESTS = [{
         'url': 'http://www.kuwo.cn/mingxing/bruno+mars/',
         'info_dict': {
@@ -296,7 +296,7 @@ class KuwoCategoryIE(InfoExtractor):
 class KuwoMvIE(KuwoBaseIE):
     IE_NAME = 'kuwo:mv'
     IE_DESC = '酷我音乐 - MV'
-    _VALID_URL = r'https?://www\.kuwo\.cn/mv/(?P<id>\d+?)/'
+    _VALID_URL = r'https?://(?:www\.)?kuwo\.cn/mv/(?P<id>\d+?)/'
     _TEST = {
         'url': 'http://www.kuwo.cn/mv/6480076/',
         'info_dict': {
diff --git a/youtube_dl/extractor/litv.py b/youtube_dl/extractor/litv.py
index 05c6579f1..a3784e6c6 100644
--- a/youtube_dl/extractor/litv.py
+++ b/youtube_dl/extractor/litv.py
@@ -14,7 +14,7 @@ from ..utils import (
 
 
 class LiTVIE(InfoExtractor):
-    _VALID_URL = r'https?://www\.litv\.tv/(?:vod|promo)/[^/]+/(?:content\.do)?\?.*?\b(?:content_)?id=(?P<id>[^&]+)'
+    _VALID_URL = r'https?://(?:www\.)?litv\.tv/(?:vod|promo)/[^/]+/(?:content\.do)?\?.*?\b(?:content_)?id=(?P<id>[^&]+)'
 
     _URL_TEMPLATE = 'https://www.litv.tv/vod/%s/content.do?id=%s'
 
diff --git a/youtube_dl/extractor/lynda.py b/youtube_dl/extractor/lynda.py
index a98c4c530..299873ecc 100644
--- a/youtube_dl/extractor/lynda.py
+++ b/youtube_dl/extractor/lynda.py
@@ -94,7 +94,7 @@ class LyndaBaseIE(InfoExtractor):
 class LyndaIE(LyndaBaseIE):
     IE_NAME = 'lynda'
     IE_DESC = 'lynda.com videos'
-    _VALID_URL = r'https?://www\.lynda\.com/(?:[^/]+/[^/]+/\d+|player/embed)/(?P<id>\d+)'
+    _VALID_URL = r'https?://(?:www\.)?lynda\.com/(?:[^/]+/[^/]+/\d+|player/embed)/(?P<id>\d+)'
 
     _TIMECODE_REGEX = r'\[(?P<timecode>\d+:\d+:\d+[\.,]\d+)\]'
 
diff --git a/youtube_dl/extractor/macgamestore.py b/youtube_dl/extractor/macgamestore.py
index 3cd4a3a19..43db9929c 100644
--- a/youtube_dl/extractor/macgamestore.py
+++ b/youtube_dl/extractor/macgamestore.py
@@ -7,7 +7,7 @@ from ..utils import ExtractorError
 class MacGameStoreIE(InfoExtractor):
     IE_NAME = 'macgamestore'
     IE_DESC = 'MacGameStore trailers'
-    _VALID_URL = r'https?://www\.macgamestore\.com/mediaviewer\.php\?trailer=(?P<id>\d+)'
+    _VALID_URL = r'https?://(?:www\.)?macgamestore\.com/mediaviewer\.php\?trailer=(?P<id>\d+)'
 
     _TEST = {
         'url': 'http://www.macgamestore.com/mediaviewer.php?trailer=2450',
diff --git a/youtube_dl/extractor/metacritic.py b/youtube_dl/extractor/metacritic.py
index 444ec0310..7d468d78b 100644
--- a/youtube_dl/extractor/metacritic.py
+++ b/youtube_dl/extractor/metacritic.py
@@ -9,7 +9,7 @@ from ..utils import (
 
 
 class MetacriticIE(InfoExtractor):
-    _VALID_URL = r'https?://www\.metacritic\.com/.+?/trailers/(?P<id>\d+)'
+    _VALID_URL = r'https?://(?:www\.)?metacritic\.com/.+?/trailers/(?P<id>\d+)'
 
     _TESTS = [{
         'url': 'http://www.metacritic.com/game/playstation-4/infamous-second-son/trailers/3698222',
diff --git a/youtube_dl/extractor/mgtv.py b/youtube_dl/extractor/mgtv.py
index 27bdff8b2..e0bb5d208 100644
--- a/youtube_dl/extractor/mgtv.py
+++ b/youtube_dl/extractor/mgtv.py
@@ -6,7 +6,7 @@ from ..utils import int_or_none
 
 
 class MGTVIE(InfoExtractor):
-    _VALID_URL = r'https?://www\.mgtv\.com/v/(?:[^/]+/)*(?P<id>\d+)\.html'
+    _VALID_URL = r'https?://(?:www\.)?mgtv\.com/v/(?:[^/]+/)*(?P<id>\d+)\.html'
     IE_DESC = '芒果TV'
 
     _TESTS = [{
diff --git a/youtube_dl/extractor/ministrygrid.py b/youtube_dl/extractor/ministrygrid.py
index e48eba3fa..10190d5f6 100644
--- a/youtube_dl/extractor/ministrygrid.py
+++ b/youtube_dl/extractor/ministrygrid.py
@@ -8,7 +8,7 @@ from ..utils import (
 
 
 class MinistryGridIE(InfoExtractor):
-    _VALID_URL = r'https?://www\.ministrygrid.com/([^/?#]*/)*(?P<id>[^/#?]+)/?(?:$|[?#])'
+    _VALID_URL = r'https?://(?:www\.)?ministrygrid\.com/([^/?#]*/)*(?P<id>[^/#?]+)/?(?:$|[?#])'
 
     _TEST = {
         'url': 'http://www.ministrygrid.com/training-viewer/-/training/t4g-2014-conference/the-gospel-by-numbers-4/the-gospel-by-numbers',
diff --git a/youtube_dl/extractor/mitele.py b/youtube_dl/extractor/mitele.py
index cd169f361..2294745d4 100644
--- a/youtube_dl/extractor/mitele.py
+++ b/youtube_dl/extractor/mitele.py
@@ -74,7 +74,7 @@ class MiTeleBaseIE(InfoExtractor):
 
 class MiTeleIE(MiTeleBaseIE):
     IE_DESC = 'mitele.es'
-    _VALID_URL = r'https?://www\.mitele\.es/(?:[^/]+/){3}(?P<id>[^/]+)/'
+    _VALID_URL = r'https?://(?:www\.)?mitele\.es/(?:[^/]+/){3}(?P<id>[^/]+)/'
 
     _TESTS = [{
         'url': 'http://www.mitele.es/programas-tv/diario-de/la-redaccion/programa-144/',
diff --git a/youtube_dl/extractor/motorsport.py b/youtube_dl/extractor/motorsport.py
index 370328b36..c9d1ab64d 100644
--- a/youtube_dl/extractor/motorsport.py
+++ b/youtube_dl/extractor/motorsport.py
@@ -9,7 +9,7 @@ from ..compat import (
 
 class MotorsportIE(InfoExtractor):
     IE_DESC = 'motorsport.com'
-    _VALID_URL = r'https?://www\.motorsport\.com/[^/?#]+/video/(?:[^/?#]+/)(?P<id>[^/]+)/?(?:$|[?#])'
+    _VALID_URL = r'https?://(?:www\.)?motorsport\.com/[^/?#]+/video/(?:[^/?#]+/)(?P<id>[^/]+)/?(?:$|[?#])'
     _TEST = {
         'url': 'http://www.motorsport.com/f1/video/main-gallery/red-bull-racing-2014-rules-explained/',
         'info_dict': {
diff --git a/youtube_dl/extractor/moviezine.py b/youtube_dl/extractor/moviezine.py
index f130b75c4..aa091a62c 100644
--- a/youtube_dl/extractor/moviezine.py
+++ b/youtube_dl/extractor/moviezine.py
@@ -7,7 +7,7 @@ from .common import InfoExtractor
 
 
 class MoviezineIE(InfoExtractor):
-    _VALID_URL = r'https?://www\.moviezine\.se/video/(?P<id>[^?#]+)'
+    _VALID_URL = r'https?://(?:www\.)?moviezine\.se/video/(?P<id>[^?#]+)'
 
     _TEST = {
         'url': 'http://www.moviezine.se/video/205866',
diff --git a/youtube_dl/extractor/myspass.py b/youtube_dl/extractor/myspass.py
index 1ca7b1a9e..2afe535b5 100644
--- a/youtube_dl/extractor/myspass.py
+++ b/youtube_dl/extractor/myspass.py
@@ -11,7 +11,7 @@ from ..utils import (
 
 
 class MySpassIE(InfoExtractor):
-    _VALID_URL = r'https?://www\.myspass\.de/.*'
+    _VALID_URL = r'https?://(?:www\.)?myspass\.de/.*'
     _TEST = {
         'url': 'http://www.myspass.de/myspass/shows/tvshows/absolute-mehrheit/Absolute-Mehrheit-vom-17022013-Die-Highlights-Teil-2--/11741/',
         'md5': '0b49f4844a068f8b33f4b7c88405862b',
diff --git a/youtube_dl/extractor/nbc.py b/youtube_dl/extractor/nbc.py
index f37bf2f30..7f1bd9229 100644
--- a/youtube_dl/extractor/nbc.py
+++ b/youtube_dl/extractor/nbc.py
@@ -13,7 +13,7 @@ from ..utils import (
 
 
 class NBCIE(InfoExtractor):
-    _VALID_URL = r'https?://www\.nbc\.com/(?:[^/]+/)+(?P<id>n?\d+)'
+    _VALID_URL = r'https?://(?:www\.)?nbc\.com/(?:[^/]+/)+(?P<id>n?\d+)'
 
     _TESTS = [
         {
@@ -138,7 +138,7 @@ class NBCSportsVPlayerIE(InfoExtractor):
 
 class NBCSportsIE(InfoExtractor):
     # Does not include https because its certificate is invalid
-    _VALID_URL = r'https?://www\.nbcsports\.com//?(?:[^/]+/)+(?P<id>[0-9a-z-]+)'
+    _VALID_URL = r'https?://(?:www\.)?nbcsports\.com//?(?:[^/]+/)+(?P<id>[0-9a-z-]+)'
 
     _TEST = {
         'url': 'http://www.nbcsports.com//college-basketball/ncaab/tom-izzo-michigan-st-has-so-much-respect-duke',
@@ -161,7 +161,7 @@ class NBCSportsIE(InfoExtractor):
 
 
 class CSNNEIE(InfoExtractor):
-    _VALID_URL = r'https?://www\.csnne\.com/video/(?P<id>[0-9a-z-]+)'
+    _VALID_URL = r'https?://(?:www\.)?csnne\.com/video/(?P<id>[0-9a-z-]+)'
 
     _TEST = {
         'url': 'http://www.csnne.com/video/snc-evening-update-wright-named-red-sox-no-5-starter',
diff --git a/youtube_dl/extractor/ndr.py b/youtube_dl/extractor/ndr.py
index 0cded6b5c..e3b0da2e9 100644
--- a/youtube_dl/extractor/ndr.py
+++ b/youtube_dl/extractor/ndr.py
@@ -23,7 +23,7 @@ class NDRBaseIE(InfoExtractor):
 class NDRIE(NDRBaseIE):
     IE_NAME = 'ndr'
     IE_DESC = 'NDR.de - Norddeutscher Rundfunk'
-    _VALID_URL = r'https?://www\.ndr\.de/(?:[^/]+/)*(?P<id>[^/?#]+),[\da-z]+\.html'
+    _VALID_URL = r'https?://(?:www\.)?ndr\.de/(?:[^/]+/)*(?P<id>[^/?#]+),[\da-z]+\.html'
     _TESTS = [{
         # httpVideo, same content id
         'url': 'http://www.ndr.de/fernsehen/Party-Poette-und-Parade,hafengeburtstag988.html',
@@ -105,7 +105,7 @@ class NDRIE(NDRBaseIE):
 class NJoyIE(NDRBaseIE):
     IE_NAME = 'njoy'
     IE_DESC = 'N-JOY'
-    _VALID_URL = r'https?://www\.n-joy\.de/(?:[^/]+/)*(?:(?P<display_id>[^/?#]+),)?(?P<id>[\da-z]+)\.html'
+    _VALID_URL = r'https?://(?:www\.)?n-joy\.de/(?:[^/]+/)*(?:(?P<display_id>[^/?#]+),)?(?P<id>[\da-z]+)\.html'
     _TESTS = [{
         # httpVideo, same content id
         'url': 'http://www.n-joy.de/entertainment/comedy/comedy_contest/Benaissa-beim-NDR-Comedy-Contest,comedycontest2480.html',
@@ -238,7 +238,7 @@ class NDREmbedBaseIE(InfoExtractor):
 
 class NDREmbedIE(NDREmbedBaseIE):
     IE_NAME = 'ndr:embed'
-    _VALID_URL = r'https?://www\.ndr\.de/(?:[^/]+/)*(?P<id>[\da-z]+)-(?:player|externalPlayer)\.html'
+    _VALID_URL = r'https?://(?:www\.)?ndr\.de/(?:[^/]+/)*(?P<id>[\da-z]+)-(?:player|externalPlayer)\.html'
     _TESTS = [{
         'url': 'http://www.ndr.de/fernsehen/sendungen/ndr_aktuell/ndraktuell28488-player.html',
         'md5': '8b9306142fe65bbdefb5ce24edb6b0a9',
@@ -332,7 +332,7 @@ class NDREmbedIE(NDREmbedBaseIE):
 
 class NJoyEmbedIE(NDREmbedBaseIE):
     IE_NAME = 'njoy:embed'
-    _VALID_URL = r'https?://www\.n-joy\.de/(?:[^/]+/)*(?P<id>[\da-z]+)-(?:player|externalPlayer)_[^/]+\.html'
+    _VALID_URL = r'https?://(?:www\.)?n-joy\.de/(?:[^/]+/)*(?P<id>[\da-z]+)-(?:player|externalPlayer)_[^/]+\.html'
     _TESTS = [{
         # httpVideo
         'url': 'http://www.n-joy.de/events/reeperbahnfestival/doku948-player_image-bc168e87-5263-4d6d-bd27-bb643005a6de_theme-n-joy.html',
diff --git a/youtube_dl/extractor/nextmedia.py b/youtube_dl/extractor/nextmedia.py
index aae7aeeeb..a08e48c4b 100644
--- a/youtube_dl/extractor/nextmedia.py
+++ b/youtube_dl/extractor/nextmedia.py
@@ -7,7 +7,7 @@ from ..utils import parse_iso8601
 
 class NextMediaIE(InfoExtractor):
     IE_DESC = '蘋果日報'
-    _VALID_URL = r'https?://hk.apple.nextmedia.com/[^/]+/[^/]+/(?P<date>\d+)/(?P<id>\d+)'
+    _VALID_URL = r'https?://hk\.apple\.nextmedia\.com/[^/]+/[^/]+/(?P<date>\d+)/(?P<id>\d+)'
     _TESTS = [{
         'url': 'http://hk.apple.nextmedia.com/realtime/news/20141108/53109199',
         'md5': 'dff9fad7009311c421176d1ac90bfe4f',
@@ -68,7 +68,7 @@ class NextMediaIE(InfoExtractor):
 
 class NextMediaActionNewsIE(NextMediaIE):
     IE_DESC = '蘋果日報 - 動新聞'
-    _VALID_URL = r'https?://hk.dv.nextmedia.com/actionnews/[^/]+/(?P<date>\d+)/(?P<id>\d+)/\d+'
+    _VALID_URL = r'https?://hk\.dv\.nextmedia\.com/actionnews/[^/]+/(?P<date>\d+)/(?P<id>\d+)/\d+'
     _TESTS = [{
         'url': 'http://hk.dv.nextmedia.com/actionnews/hit/20150121/19009428/20061460',
         'md5': '05fce8ffeed7a5e00665d4b7cf0f9201',
@@ -93,7 +93,7 @@ class NextMediaActionNewsIE(NextMediaIE):
 
 class AppleDailyIE(NextMediaIE):
     IE_DESC = '臺灣蘋果日報'
-    _VALID_URL = r'https?://(www|ent).appledaily.com.tw/(?:animation|appledaily|enews|realtimenews)/[^/]+/[^/]+/(?P<date>\d+)/(?P<id>\d+)(/.*)?'
+    _VALID_URL = r'https?://(www|ent)\.appledaily\.com\.tw/(?:animation|appledaily|enews|realtimenews)/[^/]+/[^/]+/(?P<date>\d+)/(?P<id>\d+)(/.*)?'
     _TESTS = [{
         'url': 'http://ent.appledaily.com.tw/enews/article/entertainment/20150128/36354694',
         'md5': 'a843ab23d150977cc55ef94f1e2c1e4d',
diff --git a/youtube_dl/extractor/niconico.py b/youtube_dl/extractor/niconico.py
index dd75a48af..6eaaa8416 100644
--- a/youtube_dl/extractor/niconico.py
+++ b/youtube_dl/extractor/niconico.py
@@ -252,7 +252,7 @@ class NiconicoIE(InfoExtractor):
 
 
 class NiconicoPlaylistIE(InfoExtractor):
-    _VALID_URL = r'https?://www\.nicovideo\.jp/mylist/(?P<id>\d+)'
+    _VALID_URL = r'https?://(?:www\.)?nicovideo\.jp/mylist/(?P<id>\d+)'
 
     _TEST = {
         'url': 'http://www.nicovideo.jp/mylist/27411728',
diff --git a/youtube_dl/extractor/oktoberfesttv.py b/youtube_dl/extractor/oktoberfesttv.py
index 4a41c0542..f2ccc53dc 100644
--- a/youtube_dl/extractor/oktoberfesttv.py
+++ b/youtube_dl/extractor/oktoberfesttv.py
@@ -5,7 +5,7 @@ from .common import InfoExtractor
 
 
 class OktoberfestTVIE(InfoExtractor):
-    _VALID_URL = r'https?://www\.oktoberfest-tv\.de/[^/]+/[^/]+/video/(?P<id>[^/?#]+)'
+    _VALID_URL = r'https?://(?:www\.)?oktoberfest-tv\.de/[^/]+/[^/]+/video/(?P<id>[^/?#]+)'
 
     _TEST = {
         'url': 'http://www.oktoberfest-tv.de/de/kameras/video/hb-zelt',
diff --git a/youtube_dl/extractor/openload.py b/youtube_dl/extractor/openload.py
index 76316ca2f..c261a7455 100644
--- a/youtube_dl/extractor/openload.py
+++ b/youtube_dl/extractor/openload.py
@@ -13,7 +13,7 @@ from ..utils import (
 
 
 class OpenloadIE(InfoExtractor):
-    _VALID_URL = r'https://openload.(?:co|io)/(?:f|embed)/(?P<id>[a-zA-Z0-9-_]+)'
+    _VALID_URL = r'https?://openload\.(?:co|io)/(?:f|embed)/(?P<id>[a-zA-Z0-9-_]+)'
 
     _TESTS = [{
         'url': 'https://openload.co/f/kUEfGclsU9o',
diff --git a/youtube_dl/extractor/periscope.py b/youtube_dl/extractor/periscope.py
index 6c640089d..eb1aeba46 100644
--- a/youtube_dl/extractor/periscope.py
+++ b/youtube_dl/extractor/periscope.py
@@ -94,7 +94,7 @@ class PeriscopeIE(PeriscopeBaseIE):
 
 
 class PeriscopeUserIE(PeriscopeBaseIE):
-    _VALID_URL = r'https?://www\.periscope\.tv/(?P<id>[^/]+)/?$'
+    _VALID_URL = r'https?://(?:www\.)?periscope\.tv/(?P<id>[^/]+)/?$'
     IE_DESC = 'Periscope user videos'
     IE_NAME = 'periscope:user'
 
diff --git a/youtube_dl/extractor/playvid.py b/youtube_dl/extractor/playvid.py
index 78d219299..79c2db085 100644
--- a/youtube_dl/extractor/playvid.py
+++ b/youtube_dl/extractor/playvid.py
@@ -14,7 +14,7 @@ from ..utils import (
 
 
 class PlayvidIE(InfoExtractor):
-    _VALID_URL = r'https?://www\.playvid\.com/watch(\?v=|/)(?P<id>.+?)(?:#|$)'
+    _VALID_URL = r'https?://(?:www\.)?playvid\.com/watch(\?v=|/)(?P<id>.+?)(?:#|$)'
     _TESTS = [{
         'url': 'http://www.playvid.com/watch/RnmBNgtrrJu',
         'md5': 'ffa2f6b2119af359f544388d8c01eb6c',
diff --git a/youtube_dl/extractor/qqmusic.py b/youtube_dl/extractor/qqmusic.py
index ff0af9543..37cb9e2c9 100644
--- a/youtube_dl/extractor/qqmusic.py
+++ b/youtube_dl/extractor/qqmusic.py
@@ -18,7 +18,7 @@ from ..utils import (
 class QQMusicIE(InfoExtractor):
     IE_NAME = 'qqmusic'
     IE_DESC = 'QQ音乐'
-    _VALID_URL = r'https?://y.qq.com/#type=song&mid=(?P<id>[0-9A-Za-z]+)'
+    _VALID_URL = r'https?://y\.qq\.com/#type=song&mid=(?P<id>[0-9A-Za-z]+)'
     _TESTS = [{
         'url': 'http://y.qq.com/#type=song&mid=004295Et37taLD',
         'md5': '9ce1c1c8445f561506d2e3cfb0255705',
@@ -172,7 +172,7 @@ class QQPlaylistBaseIE(InfoExtractor):
 class QQMusicSingerIE(QQPlaylistBaseIE):
     IE_NAME = 'qqmusic:singer'
     IE_DESC = 'QQ音乐 - 歌手'
-    _VALID_URL = r'https?://y.qq.com/#type=singer&mid=(?P<id>[0-9A-Za-z]+)'
+    _VALID_URL = r'https?://y\.qq\.com/#type=singer&mid=(?P<id>[0-9A-Za-z]+)'
     _TEST = {
         'url': 'http://y.qq.com/#type=singer&mid=001BLpXF2DyJe2',
         'info_dict': {
@@ -217,7 +217,7 @@ class QQMusicSingerIE(QQPlaylistBaseIE):
 class QQMusicAlbumIE(QQPlaylistBaseIE):
     IE_NAME = 'qqmusic:album'
     IE_DESC = 'QQ音乐 - 专辑'
-    _VALID_URL = r'https?://y.qq.com/#type=album&mid=(?P<id>[0-9A-Za-z]+)'
+    _VALID_URL = r'https?://y\.qq\.com/#type=album&mid=(?P<id>[0-9A-Za-z]+)'
 
     _TESTS = [{
         'url': 'http://y.qq.com/#type=album&mid=000gXCTb2AhRR1',
diff --git a/youtube_dl/extractor/rottentomatoes.py b/youtube_dl/extractor/rottentomatoes.py
index 23abf7a27..1d404d20a 100644
--- a/youtube_dl/extractor/rottentomatoes.py
+++ b/youtube_dl/extractor/rottentomatoes.py
@@ -5,7 +5,7 @@ from .internetvideoarchive import InternetVideoArchiveIE
 
 
 class RottenTomatoesIE(InfoExtractor):
-    _VALID_URL = r'https?://www\.rottentomatoes\.com/m/[^/]+/trailers/(?P<id>\d+)'
+    _VALID_URL = r'https?://(?:www\.)?rottentomatoes\.com/m/[^/]+/trailers/(?P<id>\d+)'
 
     _TEST = {
         'url': 'http://www.rottentomatoes.com/m/toy_story_3/trailers/11028566/',
diff --git a/youtube_dl/extractor/roxwel.py b/youtube_dl/extractor/roxwel.py
index 41638c1d0..65284643b 100644
--- a/youtube_dl/extractor/roxwel.py
+++ b/youtube_dl/extractor/roxwel.py
@@ -7,7 +7,7 @@ from ..utils import unified_strdate, determine_ext
 
 
 class RoxwelIE(InfoExtractor):
-    _VALID_URL = r'https?://www\.roxwel\.com/player/(?P<filename>.+?)(\.|\?|$)'
+    _VALID_URL = r'https?://(?:www\.)?roxwel\.com/player/(?P<filename>.+?)(\.|\?|$)'
 
     _TEST = {
         'url': 'http://www.roxwel.com/player/passionpittakeawalklive.html',
diff --git a/youtube_dl/extractor/rtve.py b/youtube_dl/extractor/rtve.py
index 34f9c4a99..f1b92f6da 100644
--- a/youtube_dl/extractor/rtve.py
+++ b/youtube_dl/extractor/rtve.py
@@ -64,7 +64,7 @@ def _decrypt_url(png):
 class RTVEALaCartaIE(InfoExtractor):
     IE_NAME = 'rtve.es:alacarta'
     IE_DESC = 'RTVE a la carta'
-    _VALID_URL = r'https?://www\.rtve\.es/(m/)?(alacarta/videos|filmoteca)/[^/]+/[^/]+/(?P<id>\d+)'
+    _VALID_URL = r'https?://(?:www\.)?rtve\.es/(m/)?(alacarta/videos|filmoteca)/[^/]+/[^/]+/(?P<id>\d+)'
 
     _TESTS = [{
         'url': 'http://www.rtve.es/alacarta/videos/balonmano/o-swiss-cup-masculina-final-espana-suecia/2491869/',
@@ -184,7 +184,7 @@ class RTVEInfantilIE(InfoExtractor):
 class RTVELiveIE(InfoExtractor):
     IE_NAME = 'rtve.es:live'
     IE_DESC = 'RTVE.es live streams'
-    _VALID_URL = r'https?://www\.rtve\.es/directo/(?P<id>[a-zA-Z0-9-]+)'
+    _VALID_URL = r'https?://(?:www\.)?rtve\.es/directo/(?P<id>[a-zA-Z0-9-]+)'
 
     _TESTS = [{
         'url': 'http://www.rtve.es/directo/la-1/',
@@ -226,7 +226,7 @@ class RTVELiveIE(InfoExtractor):
 
 class RTVETelevisionIE(InfoExtractor):
     IE_NAME = 'rtve.es:television'
-    _VALID_URL = r'https?://www\.rtve\.es/television/[^/]+/[^/]+/(?P<id>\d+).shtml'
+    _VALID_URL = r'https?://(?:www\.)?rtve\.es/television/[^/]+/[^/]+/(?P<id>\d+).shtml'
 
     _TEST = {
         'url': 'http://www.rtve.es/television/20160628/revolucion-del-movil/1364141.shtml',
diff --git a/youtube_dl/extractor/screenjunkies.py b/youtube_dl/extractor/screenjunkies.py
index dd0a6ba19..02e574cd8 100644
--- a/youtube_dl/extractor/screenjunkies.py
+++ b/youtube_dl/extractor/screenjunkies.py
@@ -11,7 +11,7 @@ from ..utils import (
 
 
 class ScreenJunkiesIE(InfoExtractor):
-    _VALID_URL = r'https?://www.screenjunkies.com/video/(?P<display_id>[^/]+?)(?:-(?P<id>\d+))?(?:[/?#&]|$)'
+    _VALID_URL = r'https?://(?:www\.)?screenjunkies\.com/video/(?P<display_id>[^/]+?)(?:-(?P<id>\d+))?(?:[/?#&]|$)'
     _TESTS = [{
         'url': 'http://www.screenjunkies.com/video/best-quentin-tarantino-movie-2841915',
         'md5': '5c2b686bec3d43de42bde9ec047536b0',
diff --git a/youtube_dl/extractor/senateisvp.py b/youtube_dl/extractor/senateisvp.py
index c5f474dd1..35540c082 100644
--- a/youtube_dl/extractor/senateisvp.py
+++ b/youtube_dl/extractor/senateisvp.py
@@ -48,7 +48,7 @@ class SenateISVPIE(InfoExtractor):
         ['arch', '', 'http://ussenate-f.akamaihd.net/']
     ]
     _IE_NAME = 'senate.gov'
-    _VALID_URL = r'https?://www\.senate\.gov/isvp/?\?(?P<qs>.+)'
+    _VALID_URL = r'https?://(?:www\.)?senate\.gov/isvp/?\?(?P<qs>.+)'
     _TESTS = [{
         'url': 'http://www.senate.gov/isvp/?comm=judiciary&type=live&stt=&filename=judiciary031715&auto_play=false&wmode=transparent&poster=http%3A%2F%2Fwww.judiciary.senate.gov%2Fthemes%2Fjudiciary%2Fimages%2Fvideo-poster-flash-fit.png',
         'info_dict': {
diff --git a/youtube_dl/extractor/slideshare.py b/youtube_dl/extractor/slideshare.py
index 4967c1b77..74a1dc672 100644
--- a/youtube_dl/extractor/slideshare.py
+++ b/youtube_dl/extractor/slideshare.py
@@ -14,7 +14,7 @@ from ..utils import (
 
 
 class SlideshareIE(InfoExtractor):
-    _VALID_URL = r'https?://www\.slideshare\.net/[^/]+?/(?P<title>.+?)($|\?)'
+    _VALID_URL = r'https?://(?:www\.)?slideshare\.net/[^/]+?/(?P<title>.+?)($|\?)'
 
     _TEST = {
         'url': 'http://www.slideshare.net/Dataversity/keynote-presentation-managing-scale-and-complexity',
diff --git a/youtube_dl/extractor/spiegel.py b/youtube_dl/extractor/spiegel.py
index 74cb3a08a..b41d9f59f 100644
--- a/youtube_dl/extractor/spiegel.py
+++ b/youtube_dl/extractor/spiegel.py
@@ -103,7 +103,7 @@ class SpiegelIE(InfoExtractor):
 
 
 class SpiegelArticleIE(InfoExtractor):
-    _VALID_URL = r'https?://www\.spiegel\.de/(?!video/)[^?#]*?-(?P<id>[0-9]+)\.html'
+    _VALID_URL = r'https?://(?:www\.)?spiegel\.de/(?!video/)[^?#]*?-(?P<id>[0-9]+)\.html'
     IE_NAME = 'Spiegel:Article'
     IE_DESC = 'Articles on spiegel.de'
     _TESTS = [{
diff --git a/youtube_dl/extractor/syfy.py b/youtube_dl/extractor/syfy.py
index ab8bab5cd..def7e5a2c 100644
--- a/youtube_dl/extractor/syfy.py
+++ b/youtube_dl/extractor/syfy.py
@@ -8,7 +8,7 @@ from ..utils import (
 
 
 class SyfyIE(AdobePassIE):
-    _VALID_URL = r'https?://www\.syfy\.com/(?:[^/]+/)?videos/(?P<id>[^/?#]+)'
+    _VALID_URL = r'https?://(?:www\.)?syfy\.com/(?:[^/]+/)?videos/(?P<id>[^/?#]+)'
     _TESTS = [{
         'url': 'http://www.syfy.com/theinternetruinedmylife/videos/the-internet-ruined-my-life-season-1-trailer',
         'info_dict': {
diff --git a/youtube_dl/extractor/teachingchannel.py b/youtube_dl/extractor/teachingchannel.py
index d14d93e3a..e89759714 100644
--- a/youtube_dl/extractor/teachingchannel.py
+++ b/youtube_dl/extractor/teachingchannel.py
@@ -7,7 +7,7 @@ from .ooyala import OoyalaIE
 
 
 class TeachingChannelIE(InfoExtractor):
-    _VALID_URL = r'https?://www\.teachingchannel\.org/videos/(?P<title>.+)'
+    _VALID_URL = r'https?://(?:www\.)?teachingchannel\.org/videos/(?P<title>.+)'
 
     _TEST = {
         'url': 'https://www.teachingchannel.org/videos/teacher-teaming-evolution',
diff --git a/youtube_dl/extractor/telecinco.py b/youtube_dl/extractor/telecinco.py
index 2ecfd0405..d5abfc9e4 100644
--- a/youtube_dl/extractor/telecinco.py
+++ b/youtube_dl/extractor/telecinco.py
@@ -6,7 +6,7 @@ from .mitele import MiTeleBaseIE
 
 class TelecincoIE(MiTeleBaseIE):
     IE_DESC = 'telecinco.es, cuatro.com and mediaset.es'
-    _VALID_URL = r'https?://www\.(?:telecinco\.es|cuatro\.com|mediaset\.es)/(?:[^/]+/)+(?P<id>.+?)\.html'
+    _VALID_URL = r'https?://(?:www\.)?(?:telecinco\.es|cuatro\.com|mediaset\.es)/(?:[^/]+/)+(?P<id>.+?)\.html'
 
     _TESTS = [{
         'url': 'http://www.telecinco.es/robinfood/temporada-01/t01xp14/Bacalao-cocochas-pil-pil_0_1876350223.html',
diff --git a/youtube_dl/extractor/telewebion.py b/youtube_dl/extractor/telewebion.py
index 77916c601..7786b2813 100644
--- a/youtube_dl/extractor/telewebion.py
+++ b/youtube_dl/extractor/telewebion.py
@@ -5,7 +5,7 @@ from .common import InfoExtractor
 
 
 class TelewebionIE(InfoExtractor):
-    _VALID_URL = r'https?://www\.telewebion\.com/#!/episode/(?P<id>\d+)'
+    _VALID_URL = r'https?://(?:www\.)?telewebion\.com/#!/episode/(?P<id>\d+)'
 
     _TEST = {
         'url': 'http://www.telewebion.com/#!/episode/1263668/',
diff --git a/youtube_dl/extractor/theintercept.py b/youtube_dl/extractor/theintercept.py
index 8cb3c3669..ec6f4ecaa 100644
--- a/youtube_dl/extractor/theintercept.py
+++ b/youtube_dl/extractor/theintercept.py
@@ -11,7 +11,7 @@ from ..utils import (
 
 
 class TheInterceptIE(InfoExtractor):
-    _VALID_URL = r'https://theintercept.com/fieldofvision/(?P<id>[^/?#]+)'
+    _VALID_URL = r'https?://theintercept\.com/fieldofvision/(?P<id>[^/?#]+)'
     _TESTS = [{
         'url': 'https://theintercept.com/fieldofvision/thisisacoup-episode-four-surrender-or-die/',
         'md5': '145f28b41d44aab2f87c0a4ac8ec95bd',
diff --git a/youtube_dl/extractor/thescene.py b/youtube_dl/extractor/thescene.py
index 3e4e14031..ce1326c03 100644
--- a/youtube_dl/extractor/thescene.py
+++ b/youtube_dl/extractor/thescene.py
@@ -7,7 +7,7 @@ from ..utils import qualities
 
 
 class TheSceneIE(InfoExtractor):
-    _VALID_URL = r'https://thescene\.com/watch/[^/]+/(?P<id>[^/#?]+)'
+    _VALID_URL = r'https?://thescene\.com/watch/[^/]+/(?P<id>[^/#?]+)'
 
     _TEST = {
         'url': 'https://thescene.com/watch/vogue/narciso-rodriguez-spring-2013-ready-to-wear',
diff --git a/youtube_dl/extractor/tlc.py b/youtube_dl/extractor/tlc.py
index 88eb83d74..ce4f91f46 100644
--- a/youtube_dl/extractor/tlc.py
+++ b/youtube_dl/extractor/tlc.py
@@ -13,7 +13,7 @@ from ..compat import (
 
 class TlcDeIE(InfoExtractor):
     IE_NAME = 'tlc.de'
-    _VALID_URL = r'https?://www\.tlc\.de/(?:[^/]+/)*videos/(?P<title>[^/?#]+)?(?:.*#(?P<id>\d+))?'
+    _VALID_URL = r'https?://(?:www\.)?tlc\.de/(?:[^/]+/)*videos/(?P<title>[^/?#]+)?(?:.*#(?P<id>\d+))?'
 
     _TEST = {
         'url': 'http://www.tlc.de/sendungen/breaking-amish/videos/#3235167922001',
diff --git a/youtube_dl/extractor/udemy.py b/youtube_dl/extractor/udemy.py
index 89b869559..c2f507233 100644
--- a/youtube_dl/extractor/udemy.py
+++ b/youtube_dl/extractor/udemy.py
@@ -307,7 +307,7 @@ class UdemyIE(InfoExtractor):
 
 class UdemyCourseIE(UdemyIE):
     IE_NAME = 'udemy:course'
-    _VALID_URL = r'https?://www\.udemy\.com/(?P<id>[^/?#&]+)'
+    _VALID_URL = r'https?://(?:www\.)?udemy\.com/(?P<id>[^/?#&]+)'
     _TESTS = []
 
     @classmethod
diff --git a/youtube_dl/extractor/ustream.py b/youtube_dl/extractor/ustream.py
index 54605d863..a3dc9d33e 100644
--- a/youtube_dl/extractor/ustream.py
+++ b/youtube_dl/extractor/ustream.py
@@ -14,7 +14,7 @@ from ..utils import (
 
 
 class UstreamIE(InfoExtractor):
-    _VALID_URL = r'https?://www\.ustream\.tv/(?P<type>recorded|embed|embed/recorded)/(?P<id>\d+)'
+    _VALID_URL = r'https?://(?:www\.)?ustream\.tv/(?P<type>recorded|embed|embed/recorded)/(?P<id>\d+)'
     IE_NAME = 'ustream'
     _TESTS = [{
         'url': 'http://www.ustream.tv/recorded/20274954',
@@ -117,7 +117,7 @@ class UstreamIE(InfoExtractor):
 
 
 class UstreamChannelIE(InfoExtractor):
-    _VALID_URL = r'https?://www\.ustream\.tv/channel/(?P<slug>.+)'
+    _VALID_URL = r'https?://(?:www\.)?ustream\.tv/channel/(?P<slug>.+)'
     IE_NAME = 'ustream:channel'
     _TEST = {
         'url': 'http://www.ustream.tv/channel/channeljapan',
diff --git a/youtube_dl/extractor/vevo.py b/youtube_dl/extractor/vevo.py
index 388b4debe..783efda7d 100644
--- a/youtube_dl/extractor/vevo.py
+++ b/youtube_dl/extractor/vevo.py
@@ -31,7 +31,7 @@ class VevoIE(VevoBaseIE):
     (currently used by MTVIE and MySpaceIE)
     '''
     _VALID_URL = r'''(?x)
-        (?:https?://www\.vevo\.com/watch/(?!playlist|genre)(?:[^/]+/(?:[^/]+/)?)?|
+        (?:https?://(?:www\.)?vevo\.com/watch/(?!playlist|genre)(?:[^/]+/(?:[^/]+/)?)?|
            https?://cache\.vevo\.com/m/html/embed\.html\?video=|
            https?://videoplayer\.vevo\.com/embed/embedded\?videoId=|
            vevo:)
@@ -374,7 +374,7 @@ class VevoIE(VevoBaseIE):
 
 
 class VevoPlaylistIE(VevoBaseIE):
-    _VALID_URL = r'https?://www\.vevo\.com/watch/(?P<kind>playlist|genre)/(?P<id>[^/?#&]+)'
+    _VALID_URL = r'https?://(?:www\.)?vevo\.com/watch/(?P<kind>playlist|genre)/(?P<id>[^/?#&]+)'
 
     _TESTS = [{
         'url': 'http://www.vevo.com/watch/playlist/dadbf4e7-b99f-4184-9670-6f0e547b6a29',
diff --git a/youtube_dl/extractor/videodetective.py b/youtube_dl/extractor/videodetective.py
index 2ed5d9643..a19411a05 100644
--- a/youtube_dl/extractor/videodetective.py
+++ b/youtube_dl/extractor/videodetective.py
@@ -6,7 +6,7 @@ from .internetvideoarchive import InternetVideoArchiveIE
 
 
 class VideoDetectiveIE(InfoExtractor):
-    _VALID_URL = r'https?://www\.videodetective\.com/[^/]+/[^/]+/(?P<id>\d+)'
+    _VALID_URL = r'https?://(?:www\.)?videodetective\.com/[^/]+/[^/]+/(?P<id>\d+)'
 
     _TEST = {
         'url': 'http://www.videodetective.com/movies/kick-ass-2/194487',
diff --git a/youtube_dl/extractor/weiqitv.py b/youtube_dl/extractor/weiqitv.py
index 3dafbeec2..8e09156c2 100644
--- a/youtube_dl/extractor/weiqitv.py
+++ b/youtube_dl/extractor/weiqitv.py
@@ -6,7 +6,7 @@ from .common import InfoExtractor
 
 class WeiqiTVIE(InfoExtractor):
     IE_DESC = 'WQTV'
-    _VALID_URL = r'https?://www\.weiqitv\.com/index/video_play\?videoId=(?P<id>[A-Za-z0-9]+)'
+    _VALID_URL = r'https?://(?:www\.)?weiqitv\.com/index/video_play\?videoId=(?P<id>[A-Za-z0-9]+)'
 
     _TESTS = [{
         'url': 'http://www.weiqitv.com/index/video_play?videoId=53c744f09874f0e76a8b46f3',
diff --git a/youtube_dl/extractor/yam.py b/youtube_dl/extractor/yam.py
index 63bbc0634..ef5535547 100644
--- a/youtube_dl/extractor/yam.py
+++ b/youtube_dl/extractor/yam.py
@@ -15,7 +15,7 @@ from ..utils import (
 
 class YamIE(InfoExtractor):
     IE_DESC = '蕃薯藤yam天空部落'
-    _VALID_URL = r'https?://mymedia.yam.com/m/(?P<id>\d+)'
+    _VALID_URL = r'https?://mymedia\.yam\.com/m/(?P<id>\d+)'
 
     _TESTS = [{
         # An audio hosted on Yam
diff --git a/youtube_dl/extractor/youtube.py b/youtube_dl/extractor/youtube.py
index 5082cb589..5ca903825 100644
--- a/youtube_dl/extractor/youtube.py
+++ b/youtube_dl/extractor/youtube.py
@@ -2302,7 +2302,7 @@ class YoutubeSearchURLIE(YoutubePlaylistBaseInfoExtractor):
 
 class YoutubeShowIE(YoutubePlaylistsBaseInfoExtractor):
     IE_DESC = 'YouTube.com (multi-season) shows'
-    _VALID_URL = r'https?://www\.youtube\.com/show/(?P<id>[^?#]*)'
+    _VALID_URL = r'https?://(?:www\.)?youtube\.com/show/(?P<id>[^?#]*)'
     IE_NAME = 'youtube:show'
     _TESTS = [{
         'url': 'https://www.youtube.com/show/airdisasters',
@@ -2371,7 +2371,7 @@ class YoutubeFeedsInfoExtractor(YoutubeBaseInfoExtractor):
 class YoutubeWatchLaterIE(YoutubePlaylistIE):
     IE_NAME = 'youtube:watchlater'
     IE_DESC = 'Youtube watch later list, ":ytwatchlater" for short (requires authentication)'
-    _VALID_URL = r'https?://www\.youtube\.com/(?:feed/watch_later|(?:playlist|watch)\?(?:.+&)?list=WL)|:ytwatchlater'
+    _VALID_URL = r'https?://(?:www\.)?youtube\.com/(?:feed/watch_later|(?:playlist|watch)\?(?:.+&)?list=WL)|:ytwatchlater'
 
     _TESTS = [{
         'url': 'https://www.youtube.com/playlist?list=WL',
@@ -2392,7 +2392,7 @@ class YoutubeWatchLaterIE(YoutubePlaylistIE):
 class YoutubeFavouritesIE(YoutubeBaseInfoExtractor):
     IE_NAME = 'youtube:favorites'
     IE_DESC = 'YouTube.com favourite videos, ":ytfav" for short (requires authentication)'
-    _VALID_URL = r'https?://www\.youtube\.com/my_favorites|:ytfav(?:ou?rites)?'
+    _VALID_URL = r'https?://(?:www\.)?youtube\.com/my_favorites|:ytfav(?:ou?rites)?'
     _LOGIN_REQUIRED = True
 
     def _real_extract(self, url):
@@ -2403,21 +2403,21 @@ class YoutubeFavouritesIE(YoutubeBaseInfoExtractor):
 
 class YoutubeRecommendedIE(YoutubeFeedsInfoExtractor):
     IE_DESC = 'YouTube.com recommended videos, ":ytrec" for short (requires authentication)'
-    _VALID_URL = r'https?://www\.youtube\.com/feed/recommended|:ytrec(?:ommended)?'
+    _VALID_URL = r'https?://(?:www\.)?youtube\.com/feed/recommended|:ytrec(?:ommended)?'
     _FEED_NAME = 'recommended'
     _PLAYLIST_TITLE = 'Youtube Recommended videos'
 
 
 class YoutubeSubscriptionsIE(YoutubeFeedsInfoExtractor):
     IE_DESC = 'YouTube.com subscriptions feed, "ytsubs" keyword (requires authentication)'
-    _VALID_URL = r'https?://www\.youtube\.com/feed/subscriptions|:ytsubs(?:criptions)?'
+    _VALID_URL = r'https?://(?:www\.)?youtube\.com/feed/subscriptions|:ytsubs(?:criptions)?'
     _FEED_NAME = 'subscriptions'
     _PLAYLIST_TITLE = 'Youtube Subscriptions'
 
 
 class YoutubeHistoryIE(YoutubeFeedsInfoExtractor):
     IE_DESC = 'Youtube watch history, ":ythistory" for short (requires authentication)'
-    _VALID_URL = r'https?://www\.youtube\.com/feed/history|:ythistory'
+    _VALID_URL = r'https?://(?:www\.)?youtube\.com/feed/history|:ythistory'
     _FEED_NAME = 'history'
     _PLAYLIST_TITLE = 'Youtube History'