diff --git a/dashproxy.py b/dashproxy.py
index 5482ef6..f0c866e 100755
--- a/dashproxy.py
+++ b/dashproxy.py
@@ -259,8 +259,9 @@ def full_url(self, dest):
         return self.mpd_base_url + dest # TODO remove hardcoded arrd
 
     def write(self, dest, content):
-        dest = dest[0:dest.rfind('?')]
+        dest = dest.split('?')[0]
         dest = os.path.join(self.proxy.output_dir, dest)
+        os.makedirs(os.path.dirname(dest), exist_ok=True)
         f = open(dest, 'wb')
         f.write(content)
         f.close()