https://github.com/rg3/youtube-dl/pull/13609

0001-Allow-entire-file-to-match-or-first-10241-bytes.patch

From 6a13d2435af223a6164734b3e9255d686578e5c2 Mon Sep 17 00:00:00 2001
From: Kevin Mark <kmark937@gmail.com>
Date: Sat, 8 Jul 2017 19:45:21 -0400
Subject: [PATCH] Allow entire file to match or first 10241 bytes

---
 test/test_download.py | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/test/test_download.py b/test/test_download.py
index 209f5f6d6..f918af799 100644
--- a/test/test_download.py
+++ b/test/test_download.py
@@ -56,9 +56,9 @@ class YoutubeDL(youtube_dl.YoutubeDL):
         return super(YoutubeDL, self).process_info(info_dict)
 
 
-def _file_md5(fn):
+def _file_md5(fn, size=None):
     with open(fn, 'rb') as f:
-        return hashlib.md5(f.read()).hexdigest()
+        return hashlib.md5(f.read(size)).hexdigest()
 
 
 defs = gettestcases()
@@ -224,8 +224,8 @@ def generator(test_case, tname):
                             (tc_filename, format_bytes(expected_minsize),
                                 format_bytes(got_fsize)))
                     if 'md5' in tc:
-                        md5_for_file = _file_md5(tc_filename)
-                        self.assertEqual(tc['md5'], md5_for_file)
+                        if tc['md5'] != _file_md5(tc_filename):
+                            self.assertEqual(tc['md5'], _file_md5(tc_filename, 10241))
                 # Finally, check test cases' data again but this time against
                 # extracted data from info JSON file written during processing
                 info_json_fn = os.path.splitext(tc_filename)[0] + '.info.json'
-- 
2.13.2

0001-Only-MD5-the-first-10241-bytes.patch

From 6a094f02693a5854c280948e445f55267ce0a92f Mon Sep 17 00:00:00 2001
From: Kevin Mark <kmark937@gmail.com>
Date: Sat, 8 Jul 2017 19:33:18 -0400
Subject: [PATCH] Only MD5 the first 10241 bytes

---
 test/test_download.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/test_download.py b/test/test_download.py
index 209f5f6d6..4f720eff3 100644
--- a/test/test_download.py
+++ b/test/test_download.py
@@ -58,7 +58,7 @@ class YoutubeDL(youtube_dl.YoutubeDL):
 
 def _file_md5(fn):
     with open(fn, 'rb') as f:
-        return hashlib.md5(f.read()).hexdigest()
+        return hashlib.md5(f.read(10241)).hexdigest()
 
 
 defs = gettestcases()
-- 
2.13.2