diff --git a/transcoder/src/videostream.go b/transcoder/src/videostream.go
index 9edab552..6c152284 100644
--- a/transcoder/src/videostream.go
+++ b/transcoder/src/videostream.go
@@ -20,7 +20,7 @@ func NewVideoStream(file *FileStream, quality Quality) *VideoStream {
 
 func (vs *VideoStream) getFlags() Flags {
 	if vs.quality == Original {
-		return VideoF & Transmux
+		return VideoF | Transmux
 	}
 	return VideoF
 }