diff --git a/backend/stream_providers.py b/backend/stream_providers.py
index 4532104..2c80601 100755
--- a/backend/stream_providers.py
+++ b/backend/stream_providers.py
@@ -68,10 +68,11 @@ class MetaParser(html.parser.HTMLParser):
             return self.handle_starttag_input(attrs)
 
 class StreamData():
-    def __init__(self, upstream, ctype, thumbnail, title, description, override):
+    def __init__(self, upstream, ctype, proxy_ctype, thumbnail, title, description, override):
         self.values = {}
         self.values["upstream"] = upstream
         self.values["ctype"] = ctype
+        self.values["proxy_ctype"] = proxy_ctype
         self.values["thumbnail"] = thumbnail
         self.values["title"] = title
         self.values["description"] = description
@@ -85,6 +86,8 @@ class StreamData():
         return self.values.get("upstream")
     def ctype(self):
         return self.values.get("ctype")
+    def proxy_ctype(self):
+        return self.values.get("ctype")
     def thumbnail(self):
         return self.values.get("thumbnail")
     def title(self):
@@ -135,6 +138,7 @@ class StreamProvider():
     def init_stream(self):
         stream = {}
         stream["upstream"] = None
+        stream["proxy_ctype"] = None
         stream["ctype"] = None
         stream["thumbnail"] = None
         stream["title"] = None
@@ -143,6 +147,7 @@ class StreamProvider():
         return stream
     def process(self):
         data = self.stream()
+        proxy_ctype = data.proxy_ctype()
         if not isinstance(data.upstream(), str) or isinstance(data.ctype(), str):
             return data
         proxies = None
@@ -164,7 +169,9 @@ class StreamProvider():
                     ctype = None
                 elif "mpegurl" in ctype:
                     ctype = "application/vnd.apple.mpegurl"
-        return StreamData(data.upstream(), ctype, data.thumbnail(), data.title(), data.description(), data.override)
+                if ctype == "application/octet-stream" and isinstance(proxy_ctype, str):
+                    ctype = proxy_ctype
+        return StreamData(data.upstream(), ctype, proxy_ctype, data.thumbnail(), data.title(), data.description(), data.override)
     async def run(self):
         data = None
         try:
@@ -188,10 +195,10 @@ class StreamlinkRunner(StreamProvider):
                 for key in reversed(streams):
                     stream = streams.get(key)
                     if hasattr(stream, "url"):
-                        return StreamData(stream.url, self.extract_mime(stream.url), None, None, None, False)
+                        return StreamData(stream.url, self.extract_mime(stream.url), None, None, None, None, False)
         except Exception as e:
             self.logger.info("%s <%s>", e, self.upstream)
-        return StreamData(None, None, None, None, None, False)
+        return StreamData(None, None, None, None, None, None, False)
 
 class YoutubeRunner(StreamProvider):
     def stream(self):
@@ -249,7 +256,7 @@ class SeafileRunner(StreamProvider):
             stream_data["title"] = json_data.get("filePath")
             stream_data["upstream"] = json_data.get("rawPath")
             if json_data.get("filePath").lower().endswith(".mp4"):
-                stream_data["ctype"] = "video/mp4"
+                stream_data["proxy_ctype"] = "video/mp4"
         return StreamData(**stream_data)
 
 class MetaProvider(StreamProvider):
@@ -326,7 +333,7 @@ async def get_any(upstream, proxy, logger):
     tasks.append(asyncio.create_task(get_ytdl(upstream, proxy, logger)))
     tasks.append(asyncio.create_task(get_meta(upstream, proxy, logger)))
 
-    result = StreamData(None, None, None, None, None, False)
+    result = StreamData(None, None, None, None, None, None, False)
     for task in asyncio.as_completed(tasks):
         temp_result = await task
         if isinstance(temp_result, StreamData):