@the_trash_dimension Would say the lighter coloured subtle text shows up very well

but darker subtitle does not. So it's a consideration both for small size video player where it's hard to see anyway (inside Mastodon etc natively to play peertube video for example) or even on peertube needs pausing and getting close to look at text often since the text outline is similar / not enough contrast as colours to see what it says for farker text...

Just my tip - had to pause watching every time darker subtitle came up...