Playout video at constant frames per sec

Change-Id: Ia81412abe2b2ffb17151d490691625aa784ef4c0
diff --git a/requirements.txt b/requirements.txt
index c91b2ad..702752e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,7 @@
 click==8.0.1
 dataclasses==0.8
 Flask==2.0.1
+fpstimer==0.0.1
 importlib-metadata==4.8.1
 imutils==0.5.4
 itsdangerous==2.0.1