JW Player for Rails. Current version of JW Player is 6.5.3609
Add this line to your application's Gemfile:
gem 'jwplayer-rails'
Or install it yourself as:
$ gem install jwplayer-rails
First include assets on the page
<%= jwplayer_assets %>
Than place a div with JW Player
<%= jwplayer %>
You can pass options to jwplayer helper to customize it:
<%= jwplayer({width: 500, height: 200}) %>
More information for customization could be found here
Have fun!