[utils] Allow None mimetypes in mimetype2ext

8 years ago · eb9ee19422
1 changed files with 3 additions and 0 deletions
--- a/youtube_dl/utils.py
+++ b/youtube_dl/utils.py
@ -1935,6 +1935,9 @@ def error_to_compat_str(err):


 def mimetype2ext(mt):
+    if mt is None:
+        return None
+
    ext = {
        'audio/mp4': 'm4a',
    }.get(mt)