How can i remobe black background from subtitles on iphone ?
I have video with a track element for subtitles in .vtt format. How can I remove the black background behind the subtitles on iOS/iPhone ? I can't remove it only from iphone, cause video plays within iphone's native player.
I have tried to remove it by following instructions written here https://support.jwplayer.com/customer/portal/articles/1482067-styling-captions-for-fcc-compliance but it is affecting only on subtitles outside of player. You can see that black background here http://test.teenvoice.co/dating/the-casual-date/ (it is demo link)
Thanks in advance.