diff --git a/app/node/output/track/track.h b/app/node/output/track/track.h
index 7a552a018..8c1c02d79 100644
--- a/app/node/output/track/track.h
+++ b/app/node/output/track/track.h
@@ -222,6 +222,9 @@ public:
           } else if (s.at(0) == 'a') {
             // Audio stream
             return Track::kAudio;
+          } else if (s.at(0) == 's') {
+            // Subtitle stream
+            return Track::kSubtitle;
           }
         }
       }