YouTube - Auto-Buffer & Auto-HD

Buffers the video without autoplaying and puts it in HD if the option is on.
For Firefox, Opera, & Chrome

This script is (primarily) compatible with:

• Greasemonkey on Mozilla Firefox 3.6+
• Tampermonkey on Google Chrome 31+
• Tampermonkey beta on Opera Next 17+

There is an experimental ad-blocking feature, but if you want to
block video ads 100%, get AdBlock below.

• AdBlock for Firefox
• AdBlock for Chrome
• AdBlock for Opera