change video code format to support chrome, but unsupport safari
@@ -32,7 +32,7 @@ name = "./result/1-mask_detection.mp4"
width = 1280
height = 720
fps = 30
-fourcc = cv2.VideoWriter_fourcc(*'mp4v')
+fourcc = cv2.VideoWriter_fourcc(*'vp90')
writer = cv2.VideoWriter(name, fourcc, fps, (width, height))
maskIndex = 0
