[utils] Fix intlist_to_bytes in Python 2 (#4181)

1 files changed, 1 insertions, 4 deletions

diff --git a/youtube_dl/utils.py b/youtube_dl/utils.py
index d87e212ae..0b2ba39e2 100644
--- a/youtube_dl/utils.py
+++ b/youtube_dl/utils.py
@@ -843,10 +843,7 @@ def bytes_to_intlist(bs):
 def intlist_to_bytes(xs):
     if not xs:
         return b''
-    if isinstance(chr(0), bytes):  # Python 2
-        return ''.join([chr(x) for x in xs])
-    else:
-        return bytes(xs)
+    return struct.pack('%dB' % len(xs), *xs)
 
 
 # Cross-platform file locking