Source Code added

mobile/lib/extensions/scroll_extensions.dart

@@ -0,0 +1,34 @@
+import 'package:flutter/cupertino.dart';
+
+// https://stackoverflow.com/a/74453792
+class FastScrollPhysics extends ScrollPhysics {
+  const FastScrollPhysics({super.parent});
+
+  @override
+  FastScrollPhysics applyTo(ScrollPhysics? ancestor) {
+    return FastScrollPhysics(parent: buildParent(ancestor));
+  }
+
+  @override
+  SpringDescription get spring => const SpringDescription(mass: 1, stiffness: 402.49984375, damping: 40);
+}
+
+class FastClampingScrollPhysics extends ClampingScrollPhysics {
+  const FastClampingScrollPhysics({super.parent});
+
+  @override
+  FastClampingScrollPhysics applyTo(ScrollPhysics? ancestor) {
+    return FastClampingScrollPhysics(parent: buildParent(ancestor));
+  }
+
+  @override
+  SpringDescription get spring => const SpringDescription(
+    // When swiping between videos on Android, the placeholder of the first opened video
+    // can briefly be seen and cause a flicker effect if the video begins to initialize
+    // before the animation finishes - probably a bug in PhotoViewGallery's animation handling
+    // Making the animation faster is not just stylistic, but also helps to avoid this flicker
+    mass: 1,
+    stiffness: 1601.2499609375,
+    damping: 80,
+  );
+}