I have a small doubt and wonder if I could help.
By adding a post, I have the permalink "http://www.mysite.com/post-name". I would like to know how to post a parent, for example, "http://www.mysql.com/post-name/video". I wanted to add sub posts in the posts, but do not know how.
To add pages, simply add the new page as a parent of another page, but does not have this option for posts.
I was looking for something like WP Rewrite class or any other way to do this.