TTML on VideoPlayer

Hi Guys,

Is it possible to render closed captions from a ttml file on Video player component? I know how to do that on VideoScreen component by,

SubtitleConfig: { 
     TrackName: "http://myserver.com/myfolder/closed_caption.ttml"
}

The sample code give in http://sdkdocs.roku.com/display/sdkdoc/ ... on+Support talks only about ttml file given to a roVideoScreen component.

So, is it possible to provide an external ttml file to roVideoPlayer component and render the closed captions? My streaming protocol is HLS (not smooth steaming).