I have my YouTube channel mostly in Czech and I add English subtitles for my videos. But since the subtitles are not ON by default, I am concerned that many users won't notice that the English subtitles are available. Half a year ago it was possible to add annotations to the video, so I did it this way:
But this is no longer possible since YouTube no longer allows to add these annotations to new videos.
So, are there ways how to notify users that the subtitles are available (besides putting the message directly into the video, I cannot do it for older videos..), or have subtitles somehow turned on for them by default (for users with English language)?