We have a common ttml for both mobile and ott devices. The fontsize is being set as 16px which is optimal for mobile devices. But 16px is too small for Roku. Is there a way to override this from the App and increase the fontsize before displaying closed captions?
eg:
<style xml:id="defaultSpeaker" xmlns:_="http://www.w3.org/ns/ttml#styling" _:fontSize="16px" _:fontFamily="Arial" _:fontWeight="normal" _:fontStyle="normal" _:color="white" _:backgroundColor="black" _:textAlign="center" _:origin="10% 85%" _:extent="80% 10%"></style>
<style xml:id="defaultCaption" xmlns:_="http://www.w3.org/ns/ttml#styling" _:fontSize="16px" _:fontFamily="Arial" _:fontWeight="normal" _:fontStyle="normal" _:color="white" _:backgroundColor="black" _:textAlign="center" _:origin="10% 85%" _:extent="80% 10%"></style>