There are several ways you can make your posts more accessible to improve people's video experience.
That would be filling out all meta data, alternative descriptions, and subtitles.
The main one of course is subtitles as many people choose to watch without sound or having partial or full hearing impairment. Generally better performing posts have #subtitles and though it may be tedious it makes a huge difference. I don't have the patience unfortunately for anything more than 10 minutes, but I would like to hear your thoughts on subtitling and improving #accessibility for people watching your videos and if you currently do anything to improve that please share with us in the comments below.
If automatic subtitles aren't generated you can upload to Facebook and generate automatic captions and then extract them via https://savesubs.com/
Also if you have an issue uploading your SRT file it you may need to add ".en_US" as Facebook requires that for example or you might have an additional blank line in the subtitles at the bottom or somewhere in between you have to make sure you remove that. I had to for this video.
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