It looks like there's a bug in the videoplayer sample application. The StreamFormat should not be an array element in the XML. To work around this add the following line immediately before the call to SetContent() in appVideoScreen.brs.
To use the value that was passed in the XML data:
episode.StreamFormat = episode.StreamFormats[0]
--or--
To force it to use HLS for everything:
episode.StreamFormat = "hls"
I haven't had a chance verify this first hand, but code inspection seems to show what's wrong here. We'll fix this defect in the next release.
