diff --git a/stream/__init__.py b/stream/__init__.py
index dbf26ee..0e6355e 100644
--- a/stream/__init__.py
+++ b/stream/__init__.py
@@ -169,7 +169,7 @@ class Plugin_OBJ():
                                     "-hwaccel", "cuda",
                                     "-c:v", "h264_nvenc",
                                     "-c:a", "libvorbis",
-                                    "-f", "webm"
+                                    "-f", "mp4"
                                     ])
         else:
             ffmpeg_command.extend([