This is a better and simple way to auto youtube summary posts.

The Automatic Youtube Video Posts Plugin automatically creates posts for YouTube videos from any YouTube account, playlist, or search term.

Simply add single youtube videos, youtube playlists or create youtube playlists on your WordPress blog.

Wordpress Youtube Playlist Widget plugin loads the list of videos from a given plublic youtube playlist ID using google API.

Auto Posts newest YouTube videos from the YouTube channel(s) of your choice.