diff --git a/apps/files_sharing/css/public.css b/apps/files_sharing/css/public.css
index c998501dad68e..7a136420fc8d2 100644
--- a/apps/files_sharing/css/public.css
+++ b/apps/files_sharing/css/public.css
@@ -35,6 +35,10 @@
 	max-height:100%;
 	max-width:100%;
 }
+#imgframe video {
+	width: 427px;
+	height: 240px;
+}
 
 #imgframe .text-preview {
 	display: inline-block;