diff --git a/youtube_dl/extractor/servus.py b/youtube_dl/extractor/servus.py
index e579d42cf..9401bf2cf 100644
--- a/youtube_dl/extractor/servus.py
+++ b/youtube_dl/extractor/servus.py
@@ -7,9 +7,18 @@ from .common import InfoExtractor
 
 
 class ServusIE(InfoExtractor):
-    _VALID_URL = r'https?://(?:www\.)?servus\.com/(?:(?:at|de)/p/[^/]+|tv/videos)/(?P<id>[aA]{2}-\w+|\d+-\d+)'
+    _VALID_URL = r'''(?x)
+                    https?://
+                        (?:www\.)?
+                        (?:
+                            servus\.com/(?:(?:at|de)/p/[^/]+|tv/videos)|
+                            servustv\.com/videos
+                        )
+                        /(?P<id>[aA]{2}-\w+|\d+-\d+)
+                    '''
     _TESTS = [{
-        'url': 'https://www.servus.com/de/p/Die-Gr%C3%BCnen-aus-Sicht-des-Volkes/AA-1T6VBU5PW1W12/',
+        # new URL schema
+        'url': 'https://www.servustv.com/videos/aa-1t6vbu5pw1w12/',
         'md5': '3e1dd16775aa8d5cbef23628cfffc1f4',
         'info_dict': {
             'id': 'AA-1T6VBU5PW1W12',
@@ -18,6 +27,10 @@ class ServusIE(InfoExtractor):
             'description': 'md5:1247204d85783afe3682644398ff2ec4',
             'thumbnail': r're:^https?://.*\.jpg',
         }
+    }, {
+        # old URL schema
+        'url': 'https://www.servus.com/de/p/Die-Gr%C3%BCnen-aus-Sicht-des-Volkes/AA-1T6VBU5PW1W12/',
+        'only_matching': True,
     }, {
         'url': 'https://www.servus.com/at/p/Wie-das-Leben-beginnt/1309984137314-381415152/',
         'only_matching': True,
diff --git a/youtube_dl/extractor/vimeo.py b/youtube_dl/extractor/vimeo.py
index 06a7c4cef..a246133df 100644
--- a/youtube_dl/extractor/vimeo.py
+++ b/youtube_dl/extractor/vimeo.py
@@ -33,6 +33,7 @@ from ..utils import (
     unified_timestamp,
     unsmuggle_url,
     urlencode_postdata,
+    urljoin,
     unescapeHTML,
 )
 
@@ -191,7 +192,7 @@ class VimeoBaseInfoExtractor(InfoExtractor):
             for tt in text_tracks:
                 subtitles[tt['lang']] = [{
                     'ext': 'vtt',
-                    'url': 'https://vimeo.com' + tt['url'],
+                    'url': urljoin('https://vimeo.com', tt['url']),
                 }]
 
         thumbnails = []
diff --git a/youtube_dl/extractor/youtube.py b/youtube_dl/extractor/youtube.py
index e16be3b21..1653aae43 100644
--- a/youtube_dl/extractor/youtube.py
+++ b/youtube_dl/extractor/youtube.py
@@ -2503,20 +2503,23 @@ class YoutubePlaylistIE(YoutubePlaylistBaseInfoExtractor):
     _VIDEO_RE = _VIDEO_RE_TPL % r'(?P<id>[0-9A-Za-z_-]{11})'
     IE_NAME = 'youtube:playlist'
     _TESTS = [{
-        'url': 'https://www.youtube.com/playlist?list=PLwiyx1dc3P2JR9N8gQaQN_BCvlSlap7re',
+        'url': 'https://www.youtube.com/playlist?list=PL4lCao7KL_QFVb7Iudeipvc2BCavECqzc',
         'info_dict': {
-            'title': 'ytdl test PL',
-            'id': 'PLwiyx1dc3P2JR9N8gQaQN_BCvlSlap7re',
+            'uploader_id': 'UCmlqkdCBesrv2Lak1mF_MxA',
+            'uploader': 'Sergey M.',
+            'id': 'PL4lCao7KL_QFVb7Iudeipvc2BCavECqzc',
+            'title': 'youtube-dl public playlist',
         },
-        'playlist_count': 3,
+        'playlist_count': 1,
     }, {
-        'url': 'https://www.youtube.com/playlist?list=PLtPgu7CB4gbZDA7i_euNxn75ISqxwZPYx',
+        'url': 'https://www.youtube.com/playlist?list=PL4lCao7KL_QFodcLWhDpGCYnngnHtQ-Xf',
         'info_dict': {
-            'id': 'PLtPgu7CB4gbZDA7i_euNxn75ISqxwZPYx',
-            'title': 'YDL_Empty_List',
+            'uploader_id': 'UCmlqkdCBesrv2Lak1mF_MxA',
+            'uploader': 'Sergey M.',
+            'id': 'PL4lCao7KL_QFodcLWhDpGCYnngnHtQ-Xf',
+            'title': 'youtube-dl empty playlist',
         },
         'playlist_count': 0,
-        'skip': 'This playlist is private',
     }, {
         'note': 'Playlist with deleted videos (#651). As a bonus, the video #51 is also twice in this list.',
         'url': 'https://www.youtube.com/playlist?list=PLwP_SiAcdui0KVebT0mU9Apz359a4ubsC',
@@ -2526,7 +2529,7 @@ class YoutubePlaylistIE(YoutubePlaylistBaseInfoExtractor):
             'uploader': 'Christiaan008',
             'uploader_id': 'ChRiStIaAn008',
         },
-        'playlist_count': 95,
+        'playlist_count': 96,
     }, {
         'note': 'issue #673',
         'url': 'PLBB231211A4F62143',