diff --git a/README.md b/README.md
index 73e42e54..c008da4e 100644
--- a/README.md
+++ b/README.md
@@ -46,7 +46,7 @@ Or with [MacPorts](https://www.macports.org/):
 Alternatively, refer to the [developer instructions](#developer-instructions) for how to check out and work with the git repository. For further options, including PGP signatures, see the [youtube-dl Download Page](https://ytdl-org.github.io/youtube-dl/download.html).
 
 # DESCRIPTION
-**youtube-dl** is a command-line program to download videos from YouTube.com and a few more sites. It requires the Python interpreter, version 2.6, 2.7, or 3.2+, and it is not platform specific. It should work on your Unix box, on Windows or on macOS. It is released to the public domain, which means you can modify it, redistribute it or use it however you like.
+**not-youtube-dl** is a command-line program that does not download videos from YouTube.com and a few more sites. It requires the Python interpreter, version 2.6, 2.7, or 3.2+, and it is not platform specific. It should work on your Unix box, on Windows or on macOS. It is released to the public domain, which means you can modify it, redistribute it or use it however you like.
 
     youtube-dl [OPTIONS] URL [URL...]
 
diff --git a/youtube_dl/extractor/youtube.py b/youtube_dl/extractor/youtube.py
index 02f3ab61..b92de6dd 100644
--- a/youtube_dl/extractor/youtube.py
+++ b/youtube_dl/extractor/youtube.py
@@ -578,48 +578,6 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                 'end_time': 9,
             }
         },
-        {
-            'url': 'https://www.youtube.com/watch?v=UxxajLWwzqY',
-            'note': 'Test generic use_cipher_signature video (#897)',
-            'info_dict': {
-                'id': 'UxxajLWwzqY',
-                'ext': 'mp4',
-                'upload_date': '20120506',
-                'title': 'Icona Pop - I Love It (feat. Charli XCX) [OFFICIAL VIDEO]',
-                'alt_title': 'I Love It (feat. Charli XCX)',
-                'description': 'md5:19a2f98d9032b9311e686ed039564f63',
-                'tags': ['Icona Pop i love it', 'sweden', 'pop music', 'big beat records', 'big beat', 'charli',
-                         'xcx', 'charli xcx', 'girls', 'hbo', 'i love it', "i don't care", 'icona', 'pop',
-                         'iconic ep', 'iconic', 'love', 'it'],
-                'duration': 180,
-                'uploader': 'Icona Pop',
-                'uploader_id': 'IconaPop',
-                'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/IconaPop',
-                'creator': 'Icona Pop',
-                'track': 'I Love It (feat. Charli XCX)',
-                'artist': 'Icona Pop',
-            }
-        },
-        {
-            'url': 'https://www.youtube.com/watch?v=07FYdnEawAQ',
-            'note': 'Test VEVO video with age protection (#956)',
-            'info_dict': {
-                'id': '07FYdnEawAQ',
-                'ext': 'mp4',
-                'upload_date': '20130703',
-                'title': 'Justin Timberlake - Tunnel Vision (Official Music Video) (Explicit)',
-                'alt_title': 'Tunnel Vision',
-                'description': 'md5:07dab3356cde4199048e4c7cd93471e1',
-                'duration': 419,
-                'uploader': 'justintimberlakeVEVO',
-                'uploader_id': 'justintimberlakeVEVO',
-                'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/justintimberlakeVEVO',
-                'creator': 'Justin Timberlake',
-                'track': 'Tunnel Vision',
-                'artist': 'Justin Timberlake',
-                'age_limit': 18,
-            }
-        },
         {
             'url': '//www.YouTube.com/watch?v=yZIXLfi8CZQ',
             'note': 'Embed-only video (#1746)',
@@ -677,42 +635,6 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
             },
             'skip': 'format 141 not served anymore',
         },
-        # DASH manifest with encrypted signature
-        {
-            'url': 'https://www.youtube.com/watch?v=IB3lcPjvWLA',
-            'info_dict': {
-                'id': 'IB3lcPjvWLA',
-                'ext': 'm4a',
-                'title': 'Afrojack, Spree Wilson - The Spark (Official Music Video) ft. Spree Wilson',
-                'description': 'md5:8f5e2b82460520b619ccac1f509d43bf',
-                'duration': 244,
-                'uploader': 'AfrojackVEVO',
-                'uploader_id': 'AfrojackVEVO',
-                'upload_date': '20131011',
-            },
-            'params': {
-                'youtube_include_dash_manifest': True,
-                'format': '141/bestaudio[ext=m4a]',
-            },
-        },
-        # JS player signature function name containing $
-        {
-            'url': 'https://www.youtube.com/watch?v=nfWlot6h_JM',
-            'info_dict': {
-                'id': 'nfWlot6h_JM',
-                'ext': 'm4a',
-                'title': 'Taylor Swift - Shake It Off',
-                'description': 'md5:307195cd21ff7fa352270fe884570ef0',
-                'duration': 242,
-                'uploader': 'TaylorSwiftVEVO',
-                'uploader_id': 'TaylorSwiftVEVO',
-                'upload_date': '20140818',
-            },
-            'params': {
-                'youtube_include_dash_manifest': True,
-                'format': '141/bestaudio[ext=m4a]',
-            },
-        },
         # Controversy video
         {
             'url': 'https://www.youtube.com/watch?v=T4XJQO3qol8',
@@ -744,22 +666,6 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                 'age_limit': 18,
             },
         },
-        # Age-gate video with encrypted signature
-        {
-            'url': 'https://www.youtube.com/watch?v=6kLq3WMV1nU',
-            'info_dict': {
-                'id': '6kLq3WMV1nU',
-                'ext': 'mp4',
-                'title': 'Dedication To My Ex (Miss That) (Lyric Video)',
-                'description': 'md5:33765bb339e1b47e7e72b5490139bb41',
-                'duration': 246,
-                'uploader': 'LloydVEVO',
-                'uploader_id': 'LloydVEVO',
-                'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/LloydVEVO',
-                'upload_date': '20110629',
-                'age_limit': 18,
-            },
-        },
         # video_info is None (https://github.com/ytdl-org/youtube-dl/issues/4421)
         # YouTube Red ad is not captured for creator
         {