From ee20b0219e4e3727313d90f0e1db473feb355942 Mon Sep 17 00:00:00 2001
From: Josh Hawkins <32435876+hawkeye217@users.noreply.github.com>
Date: Sun, 29 Mar 2026 12:38:39 -0500
Subject: [PATCH] skip None values in filtered output for dot notation

---
 frigate/stats/emitter.py | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/frigate/stats/emitter.py b/frigate/stats/emitter.py
index 18d053a58..2b34c7c4e 100644
--- a/frigate/stats/emitter.py
+++ b/frigate/stats/emitter.py
@@ -94,9 +94,14 @@ class StatsEmitter(threading.Thread):
                 first_value = next(iter(parent.values()), None)
 
                 if isinstance(first_value, dict):
-                    # Filter each nested entry to only requested fields
+                    # Filter each nested entry to only requested fields,
+                    # omitting None values to preserve key-absence semantics
                     selected[parent_key] = {
-                        entry_key: {field: entry.get(field) for field in child_keys}
+                        entry_key: {
+                            field: val
+                            for field in child_keys
+                            if (val := entry.get(field)) is not None
+                        }
                         for entry_key, entry in parent.items()
                     }
                 else: