WordPress lets you, by default, easily integrate videos into your posts with the use of shortcodes.
Youtube, Vimeo, DailyMotion and others are available.
For more information, check out the WordPress Documentation
Responsive videos, yay!
Videos inserted anywhere in Cleio are responsive: they will automatically inherit the width and correct proportions based on your theme layout.
Credits go to awesome fitVids for the responsive management of our Featured Video.