diff --git a/frigate/output/preview.py b/frigate/output/preview.py
index 7b89a07e0..31c9ec008 100644
--- a/frigate/output/preview.py
+++ b/frigate/output/preview.py
@@ -209,7 +209,12 @@ class PreviewRecorder:
                 os.unlink(os.path.join(PREVIEW_CACHE_DIR, file))
                 continue
 
-            ts = float(file.split("-")[1][: -(len(PREVIEW_FRAME_TYPE) + 1)])
+            file_time = file.split("-")[1][: -(len(PREVIEW_FRAME_TYPE) + 1)]
+
+            if not file_time:
+                continue
+
+            ts = float(file_time)
 
             if self.start_time == 0:
                 self.start_time = ts
diff --git a/web/src/views/events/EventView.tsx b/web/src/views/events/EventView.tsx
index 2a4374a3f..5e35aef28 100644
--- a/web/src/views/events/EventView.tsx
+++ b/web/src/views/events/EventView.tsx
@@ -588,7 +588,7 @@ function DetectionReview({
                   <Skeleton key={idx} className="aspect-video size-full" />
                 ))}
           {!loading &&
-            (currentItems?.length ?? 0) > 0 &&
+            (currentItems?.filter((seg) => seg.end_time)?.length ?? 0) > 0 &&
             (itemsToReview ?? 0) > 0 && (
               <div className="col-span-full flex items-center justify-center">
                 <Button