If you would like to embed video in your WP website, I’d highly suggest loading a plugin called Viper’s Video Quicktags.
After loading and activating the plugin, you will find it adds some buttons above where you type your page content. There are about a dozen supported video hosting sites this plugin supports. You can choose which buttons to view by going to the “Settings” menu and then selecting “Video Quicktags”. You can turn the buttons on or off with a simple checking or un-checking of a button.
While you’re in the preference panel, you can also set the default size of all videos that appear on your website as well as other features such as border color and video proportions.
Good luck and have fun!