Switch to Flash® Player for YouTube™ is a Chrome extension that helps you play all YouTube™ videos in Adobe Flash® Player. (a). It supports both YouTube website and all YouTube embedded videos. (b). Adobe Flash® Player is the best video player in Firefox for YouTube as it is very lite, powerful and supports many resolutions. (c). According to some studies (read below), enabling Flash player for YouTube, results Chrome browser to consume less CPU and memory.
A comprehensive comparison about Flash and HTML5 players is presented in this (https://en.wikipedia.org/wiki/Comparison_of_HTML5_and_Flash) Wikipedia page. It compares the features of the Flash platform, the HTML5 specification and the features implemented in modern web browsers. For example: Flash player has a better Device support comparing to HTML5. It has a better Bitmap effects support. It also supports C++ language. Moreover it has a better Data compression support comparing to HTML5. Flash Player has the ability to specify measurements in sub-pixel increments. This can result in a crisper and generally more pleasant appearance of Flash web sites.
Note: Before using this Addon, please make sure your Chrome's Flash player is up-to-date: https://support.google.com/chrome/answer/6258784?hl=en
According to many Tech blogs, YouTube is slowly replacing Flash with HTML5 player for its default web player (specially Chrome's latest versions). Therefore, if you still want to use Flash Player for YouTube videos, installing this Addon is the best way to go.
Note: If you want to get more info about the Adobe Flash Player please read this (https://en.wikipedia.org/wiki/Adobe_Flash_Player) Wikipedia page, to say a few words: Adobe Flash Player can display contents from a provided SWF file, although it has no in-built features to modify the SWF file at runtime. It can execute software written in the ActionScript programming language (as opposed to JavaScript in HTML5) which enables the runtime manipulation of text, data, vector graphics, raster graphics, sound and video.
If you see any Bugs, have a feature request or other suggestions, please visit Addon's Homepage (http://eccorem.com/apps/youtube-all-flash.html).
Extore is a team of professionals who are passionate about creating extensions for web browsers. This devotion also gives us opportunity to appreciate work of other people. We get inspired by useful, open source extensions made by developers all over the world. Our strong belief is that one should share helpful add-ons with others. That’s why we’d like to present you our ever-growing list of favourite extensions that have inspired us. Moreover, as you probably have already learned, sometimes struggling for the best brings an end to the good. Talking about add-ons it often turns out that an upgrade is worse then previous version. Also it can become really tricky to get back to the beloved version of your favourite extension. That’s why we’re going to make not only the latest, but all versions of our favourite (and we hope yours too) add-ons available for download. No more compromises, just stick to the version you really like!