Alternatives to testing HTML5 media elements

I'm testing audio tags in my Capybara tests. I'm using the poltergeist driver with PhantomJS. The problem is that the PhantomJS team resoundingly stated they have no plans to support HTML5 media elements such as <audio> or <video>. This is problematic as I need to test this audio player for a features test. Because of this, I need to replace the poltergeist driver. What driver alternatives exist? Could I by any chance run one driver for the audio tests and then run poltergeist for the other tests?