diff --git a/src/components/Timeline.vue b/src/components/Timeline.vue
index 89afb1c7..59f4d314 100644
--- a/src/components/Timeline.vue
+++ b/src/components/Timeline.vue
@@ -718,26 +718,7 @@ export default class Timeline extends Mixins(GlobalMixin, UserConfig) {
             }
 
             // Flag conversion
-            if (photo.isvideo) {
-                photo.flag |= this.c.FLAG_IS_VIDEO;
-                delete photo.isvideo;
-            }
-            if (photo.isfavorite) {
-                photo.flag |= this.c.FLAG_IS_FAVORITE;
-                delete photo.isfavorite;
-            }
-            if (photo.isfolder) {
-                photo.flag |= this.c.FLAG_IS_FOLDER;
-                delete photo.isfolder;
-            }
-            if (photo.isface) {
-                photo.flag |= this.c.FLAG_IS_FACE;
-                delete photo.isface;
-            }
-            if (photo.istag) {
-                photo.flag |= this.c.FLAG_IS_TAG;
-                delete photo.istag;
-            }
+            utils.convertFlags(photo);
 
             // Get aspect ratio
             photo.dispWp = utils.round(100 * jbox.width / this.rowWidth, 2);
diff --git a/src/services/Utils.ts b/src/services/Utils.ts
index 1c241f9b..9a3d20ed 100644
--- a/src/services/Utils.ts
+++ b/src/services/Utils.ts
@@ -1,4 +1,5 @@
 import { getCanonicalLocale } from "@nextcloud/l10n";
+import { IPhoto } from "../types";
 
 // Memoize the result of short date conversions
 // These operations are surprisingly expensive
@@ -108,6 +109,33 @@ export function roundHalf(num: number) {
     return Math.round(num * 2) / 2;
 }
 
+/**
+ * Convert server-side flags to bitmask
+ * @param photo Photo to process
+ */
+export function convertFlags(photo: IPhoto) {
+    if (photo.isvideo) {
+        photo.flag |= constants.c.FLAG_IS_VIDEO;
+        delete photo.isvideo;
+    }
+    if (photo.isfavorite) {
+        photo.flag |= constants.c.FLAG_IS_FAVORITE;
+        delete photo.isfavorite;
+    }
+    if (photo.isfolder) {
+        photo.flag |= constants.c.FLAG_IS_FOLDER;
+        delete photo.isfolder;
+    }
+    if (photo.isface) {
+        photo.flag |= constants.c.FLAG_IS_FACE;
+        delete photo.isface;
+    }
+    if (photo.istag) {
+        photo.flag |= constants.c.FLAG_IS_TAG;
+        delete photo.istag;
+    }
+}
+
 /** Global constants */
 export const constants = {
     c: {