Update index.js

index.js

@@ -276,7 +276,7 @@ function formatSize(bytes, si = false, dp = 2) {
    return `${bytes.toFixed(dp)} ${units[u]}`;
 }
 
-async function ytmp4(url, quality = 'highest') {
+async function ytmp4(url, quality = 'highestvideo') {
   try {
     const ID = ytdl.getVideoID(url),
           data = await ytdl.getInfo('https://www.youtube.com/watch?v=' + ID);