Fixes (#18935)

* Sort names alphabetically in face library dropdown

* fix potential divide by zero in misconfigured speed zones

frigate/util/velocity.py

@@ -59,6 +59,11 @@ def create_ground_plane(zone_points, distances):
         :param y: Y-coordinate in the image
         :return: Real-world distance per pixel at the given (x, y) coordinate
         """
+
+        # Return 0 if divide by zero would occur
+        if (B[0] - A[0]) == 0 or (D[1] - A[1]) == 0:
+            return 0
+
         # Normalize x and y within the zone
         x_norm = (x - A[0]) / (B[0] - A[0])
         y_norm = (y - A[1]) / (D[1] - A[1])

web/src/pages/FaceLibrary.tsx

@@ -87,7 +87,11 @@ export default function FaceLibrary() {
 
   const faces = useMemo<string[]>(
     () =>
-      faceData ? Object.keys(faceData).filter((face) => face != "train") : [],
+      faceData
+        ? Object.keys(faceData)
+            .filter((face) => face != "train")
+            .sort()
+        : [],
     [faceData],
   );
   const faceImages = useMemo<string[]>(