Using modern up-to-date browsers you do not need any plugin.
Following table shows the supported platforms, browsers and versions:
Chrome
Firefox
Internet Explorer
Edge
Opera
Safari
iOS
Android
Windows Phone
below v32 FLASH
below v45 FLASH
FLASH
HTML5
(Native)
below v27 FLASH
below v8 FLASH
HTML5
(Native)
HTML5
(Native)
above v10 HTML5
(Native)
above v32 HTML5
(MSE)
above v45 HTML5
(MSE)
above v27 HTML5
(MSE)
above v8 HTML5
(MSE)
FLASH
= Player built on Adobe Flash Player
HTML5/MSE
= Player built on HTML5 using Media Source Extension
HTML5/Native
= Player built on HTML5 using built-in HLS implementation
