From 54eafe9d0aa9fe31c0b313b8632df762720cfbac Mon Sep 17 00:00:00 2001
From: Alex X <alexey.khit@gmail.com>
Date: Sun, 18 Jan 2026 15:48:56 +0300
Subject: [PATCH] Skip snapshot caching in case of error

---
 internal/mjpeg/{init.go => mjpeg.go} | 3 +++
 1 file changed, 3 insertions(+)
 rename internal/mjpeg/{init.go => mjpeg.go} (99%)

diff --git a/internal/mjpeg/init.go b/internal/mjpeg/mjpeg.go
similarity index 99%
rename from internal/mjpeg/init.go
rename to internal/mjpeg/mjpeg.go
index b2f3e1f4..e9f973aa 100644
--- a/internal/mjpeg/init.go
+++ b/internal/mjpeg/mjpeg.go
@@ -60,6 +60,9 @@ func handlerKeyframe(w http.ResponseWriter, r *http.Request) {
 			}
 
 			defer func() {
+				if b == nil {
+					return
+				}
 				entry = cacheEntry{payload: b, timestamp: time.Now()}
 				cacheMu.Lock()
 				if cache == nil {