From 772fd5cc44c3682aed4a166936f7bf8ccccbbea4 Mon Sep 17 00:00:00 2001
From: Philipp Hagemeister <phihag@phihag.de>
Date: Thu, 1 Jan 2015 23:44:39 +0100
Subject: [PATCH] [youtube] Add a pseudo-extractor for truncated YouTube video
 IDs (#4610)

---
 youtube_dl/extractor/__init__.py |  1 +
 youtube_dl/extractor/youtube.py  | 17 +++++++++++++++++
 2 files changed, 18 insertions(+)

diff --git a/youtube_dl/extractor/__init__.py b/youtube_dl/extractor/__init__.py
index a95de54cb..9848ff611 100644
--- a/youtube_dl/extractor/__init__.py
+++ b/youtube_dl/extractor/__init__.py
@@ -545,6 +545,7 @@
     YoutubeShowIE,
     YoutubeSubscriptionsIE,
     YoutubeTopListIE,
+    YoutubeTruncatedIDIE,
     YoutubeTruncatedURLIE,
     YoutubeUserIE,
     YoutubeWatchLaterIE,
diff --git a/youtube_dl/extractor/youtube.py b/youtube_dl/extractor/youtube.py
index 7f5aeb25b..8c7842ee8 100644
--- a/youtube_dl/extractor/youtube.py
+++ b/youtube_dl/extractor/youtube.py
@@ -1701,3 +1701,20 @@ def _real_extract(self, url):
             '"http://www.youtube.com/watch?feature=foo&v=BaW_jenozKc" '
             ' or simply  youtube-dl BaW_jenozKc  .',
             expected=True)
+
+
+class YoutubeTruncatedIDIE(InfoExtractor):
+    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(
+            'Incomplete YouTube ID %s. URL %s looks truncated.' % (video_id, url),
+            expected=True)