HTML5 has been designed to play every type of media without requiring the installation of additional software such as browser plug-ins.
HTML5 is often compared to Flash however they are two different technologies. They do have some similarities but there are notable differences. For instance, Apple products like smartphones and tablets do not support Flash, but they do support HTML5. It is supported across different platforms so you can use it on computers, laptops, smartphones and tablets which makes it very accessible.
A feature that is in the development stages right now, is that with HTML5 you should be able to store data offline. This is incredibly useful for those who use applications such as Google docs or even email. If you are away from an internet connection, you can still use those applications then when you connect to the internet again, your documents will sync without you having to remember to do so.
The fact that HTML5 does not require you to use extra browser plug-ins to view media content is a great strength of the program. And the fact it can be used across all electronic devices is also a plus. With HTML5, there should be no problem running it with the web browser you are currently using. Chances are you are using a web browser that already supports HTML5 as most of the main browsers do, such as: Google Chrome, Apple Safari, Mozilla Firefox, Android browser, Opera and so on.