diff --git a/parsers.go b/parsers.go
index b874ca8..090afe4 100644
--- a/parsers.go
+++ b/parsers.go
@@ -76,6 +76,8 @@ var Parsers = []model.Parser{
 				Episode: 2,
 			},
 		),
+
+		// tag 0th audio stream as japanese language and copy all other streams unchanged into output file
 		FileEncoding: "-map 0 -c:v copy -c:a copy -c:s copy -metadata:s:a:0 language=jpn",
 	},