[utils] Improve encode_dict

diff --git a/youtube_dl/utils.py b/youtube_dl/utils.py
index d00b14b86d8ea8d43aef6bd7cf5a575cda5f94af..bff59eb73320ae611249efce55993873c8d8055a 100644 (file)
--- a/youtube_dl/utils.py
+++ b/youtube_dl/utils.py
@@ -1668,7 +1668,9 @@ def urlencode_postdata(*args, **kargs):
 
 
 def encode_dict(d, encoding='utf-8'):
-    return dict((k.encode(encoding), v.encode(encoding)) for k, v in d.items())
+    def encode(v):
+        return v.encode(encoding) if isinstance(v, compat_basestring) else v
+    return dict((encode(k), encode(v)) for k, v in d.items())
 
 
 US_RATINGS = {