From f5a272414d9898d545c9781aee86b13c20b2cb52 Mon Sep 17 00:00:00 2001
From: Nick Mowen <nickmowen213@gmail.com>
Date: Mon, 19 Jun 2023 15:09:24 -0600
Subject: [PATCH] Fix birdsye not removing cameras once objects are no longer
 visible

---
 frigate/output.py | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/frigate/output.py b/frigate/output.py
index 323788a53..50593c65e 100644
--- a/frigate/output.py
+++ b/frigate/output.py
@@ -298,10 +298,8 @@ class BirdsEyeFrameManager:
                 self.clear_frame()
                 return True
 
-        # check if we need to reset the layout because there are new cameras to add
-        reset_layout = (
-            True if len(active_cameras.difference(self.active_cameras)) > 0 else False
-        )
+        # check if we need to reset the layout because there is a different number of cameras
+        reset_layout = len(self.active_cameras) - len(active_cameras) is not 0
 
         # reset the layout if it needs to be different
         if reset_layout: