diff --git a/backend/stream.py b/backend/stream.py
index 07b3a1f..0ebb791 100755
--- a/backend/stream.py
+++ b/backend/stream.py
@@ -140,8 +140,8 @@ class MainHandler(tornado.web.RequestHandler):
         video_info = VideoInfo()
         video_info.ctype = provider_data.ctype()
         if handler.direct:
-            video_info.upstream = provider_data.upstream()
-            video_info.poster = provider_data.thumbnail()
+            video_info.upstream = str(provider_data.upstream())
+            video_info.poster = str(provider_data.thumbnail())
         else:
             proxied = await handler.proxy.proxy_url(
                 [
@@ -169,6 +169,14 @@ class MainHandler(tornado.web.RequestHandler):
             video_info.poster = proxied[2]
 
         return (
+            if video_info.upstream:
+                video_info.upstream = str(video_info.upstream)
+            if video_info.download:
+                video_info.download = str(video_info.download)
+            if video_info.poster:
+                video_info.poster = str(video_info.poster)
+            if video_info.ctype:
+                video_info.ctype = str(video_info.ctype)
             dataclasses.asdict(video_info),
             provider_data.meta(),
             provider_data.title(),