play video inline and mute by default

frontend/src/components/DoomScrollViewer/DoomScrollViewer.tsx

@@ -130,6 +130,8 @@ export default function DoomScrollViewer({ items, onClose, onViewInLibrary }: Pr
             src={api.media.fileUrl(item.id)}
             controls
             autoPlay
+            playsInline
+            muted
             style={{ maxWidth: "90vw", maxHeight: "82vh" }}
           />
         )}