update README for vercel.app, stream.new (#17539)

examples/with-mux-video/README.md

@@ -4,7 +4,9 @@ This example uses Mux Video, an API-first platform for video. The example featur
 
 ## Demo
 
-### [https://with-mux-video.now.sh/](https://with-mux-video.now.sh/)
+### [https://with-mux-video.vercel.app/](https://with-mux-video.vercel.app/)
+
+### This project was used to create [stream.new](https://stream.new/)
 
 ## Deploy your own
 

examples/with-mux-video/components/layout.js

@@ -4,9 +4,9 @@ import { MUX_HOME_PAGE_URL } from '../constants'
 export default function Layout({
   title,
   description,
-  metaTitle,
+  metaTitle = 'Mux + Next.js',
   metaDescription,
-  image,
+  image = 'https://with-mux-video.vercel.app/mux-nextjs-og-image.png',
   children,
   loadTwitterWidget,
 }) {