Update app.py

app.py

@@ -1,7 +1,7 @@
 import gradio as gr
 import cv2
 
-def greet(image):
+def greet(video):
     cap = cap = cv2.VideoCapture(video)
     succes, img = vidcap.read()
     gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)