Hi. I have an open ticket on this with our SceneGraph engineering team. At present it appears that support for 3rd party fonts for subtitles was inadvertently left out of RokuSceneGraph, So for now, the only approach that I can recommend is to use roVideoPlayer with roCaptionRenderer to render your subtitles. You will have to implement your own trick-mode for that (fast forward 3 levels / rewind 3 levels / play pause / instant replay). It is possible to use roVideoPlayer from the main Brightscript thread while most of your channel is scenegraph - our own RAF library currently does this.
- Joel