Magic Actions for YouTube

A super new look and features for YouTube! Sexy Backlight, AutoHD, Mouse Wheel Volume Control, Auto Wide, and more! - chrome Extension 

Magic Actions for YouTube™ is a lightweight and useful add-in designed for a more comfortable watching experience. 

Few key features v5.8.1:  

♥ AutoHD feature - start play all YouTube™ videos in HD

+ Highres > HD1080p > HD720p > 480p > 360p > 240p

+ YouTube with a HTML5 video player!

♥ Instant control over volume by scrolling mouse wheel!

+ OSD on-screen display 

+ YouTube with a HTML5 video player!

♥ Cinema Mode - 1-click and the whole page is shaded

+ Make you feel as if you were in a movie theater!

+ Click again to toggle back to the normal view

+ Over 20 predefined color themes

+ Your own custom colors

+ YouTube with a HTML5 video player!

♥ Zoom in and out on videos using the mouse wheel.

♥ Auto Wide - always play in wide player mode

♥ Enlarge thumbnails on mouse over

♥ Display avatars and user info in comments

♥ Expand -  expand videos to full window size

♥ Autoplay - manage whether or not the initial video will autoplay

+ allow/deny preloading a video on youtube.com

♥ Replay - repeat, replay a video again and again

♥ Autohide Player Controls - video controls will automatically hide after a video begins playing

♥ Hide Annotations -  Don't show video annotations.

you can also change scrolling mouse wheel option.

ADD This Chrome extension to to your Browser.. To add Click here

Hope that helped!