Responsive videos – Fitvids (responsive-videos-fitvids) free WordPress plugin

Responsive Videos plugin will allow you to automatically resize and scale your embedded videos on mobile devices.
CSS selector option is provided so you can target only your post / page content container.

Features

• Automatic configuration option
• Automatically resizes / scales all your embedded videos
• Works on all browsers
• Highly compatible – you can change the css selector for the text highlight
• Customizable – you can select the page type on which to activate the fitVids script