1 files changed, 69 insertions, 0 deletions
diff --git a/yt_dlp/extractor/youtube/_mistakes.py b/yt_dlp/extractor/youtube/_mistakes.py
new file mode 100644
index 000000000..c5eb5161c
--- /dev/null
+++ b/yt_dlp/extractor/youtube/_mistakes.py
@@ -0,0 +1,69 @@
+
+from ._base import YoutubeBaseInfoExtractor
+from ...utils import ExtractorError
+
+
+class YoutubeTruncatedURLIE(YoutubeBaseInfoExtractor):
+    IE_NAME = 'youtube:truncated_url'
+    IE_DESC = False  # Do not list
+    _VALID_URL = r'''(?x)
+        (?:https?://)?
+        (?:\w+\.)?[yY][oO][uU][tT][uU][bB][eE](?:-nocookie)?\.com/
+        (?:watch\?(?:
+            feature=[a-z_]+|
+            annotation_id=annotation_[^&]+|
+            x-yt-cl=[0-9]+|
+            hl=[^&]*|
+            t=[0-9]+
+        )?
+        |
+            attribution_link\?a=[^&]+
+        )
+        $
+    '''
+
+    _TESTS = [{
+        'url': 'https://www.youtube.com/watch?annotation_id=annotation_3951667041',
+        'only_matching': True,
+    }, {
+        'url': 'https://www.youtube.com/watch?',
+        'only_matching': True,
+    }, {
+        'url': 'https://www.youtube.com/watch?x-yt-cl=84503534',
+        'only_matching': True,
+    }, {
+        'url': 'https://www.youtube.com/watch?feature=foo',
+        'only_matching': True,
+    }, {
+        'url': 'https://www.youtube.com/watch?hl=en-GB',
+        'only_matching': True,
+    }, {
+        'url': 'https://www.youtube.com/watch?t=2372',
+        'only_matching': True,
+    }]
+
+    def _real_extract(self, url):
+        raise ExtractorError(
+            'Did you forget to quote the URL? Remember that & is a meta '
+            'character in most shells, so you want to put the URL in quotes, '
+            'like  yt-dlp '
+            '"https://www.youtube.com/watch?feature=foo&v=BaW_jenozKc" '
+            ' or simply  yt-dlp BaW_jenozKc  .',
+            expected=True)
+
+
+class YoutubeTruncatedIDIE(YoutubeBaseInfoExtractor):
+    IE_NAME = 'youtube:truncated_id'
+    IE_DESC = False  # Do not list
+    _VALID_URL = r'https?://(?:www\.)?youtube\.com/watch\?v=(?P<id>[0-9A-Za-z_-]{1,10})$'
+
+    _TESTS = [{
+        'url': 'https://www.youtube.com/watch?v=N_708QY7Ob',
+        'only_matching': True,
+    }]
+
+    def _real_extract(self, url):
+        video_id = self._match_id(url)
+        raise ExtractorError(
+            f'Incomplete YouTube ID {video_id}. URL {url} looks truncated.',
+            expected=True)