diff --git a/modules/services/nextcloud-instance.nix b/modules/services/nextcloud-instance.nix
index 5bc338e..86c147c 100644
--- a/modules/services/nextcloud-instance.nix
+++ b/modules/services/nextcloud-instance.nix
@@ -63,6 +63,28 @@ in {
           license = "agpl3Only";
         };
       };
+
+      # Preview settings (video may be a security risk)
+      settings = {
+        enable_previews = true;
+        enabledPreviewProviders = [
+          "OC\\Preview\\BMP"
+          "OC\\Preview\\GIF"
+          "OC\\Preview\\JPEG"
+          "OC\\Preview\\Krita"
+          "OC\\Preview\\MarkDown"
+          "OC\\Preview\\MP3"
+          "OC\\Preview\\OpenDocument"
+          "OC\\Preview\\PNG"
+          "OC\\Preview\\TXT"
+          "OC\\Preview\\XBitmap"
+          "OC\\Preview\\Movie"
+          "OC\\Preview\\MP4"
+          "OC\\Preview\\AVI"
+          "OC\\Preview\\MKV"
+        ];
+        preview_ffmpeg_path = "${pkgs.ffmpeg}/bin/ffmpeg";
+      };
     };
 
     # Fallback server with only 403