I came across your post regarding the vaccine education video and I completely agree that it would be incredibly useful for it to be publicly available. In fact, there are a lot of people out there who could benefit from watching this 90-minute informative video.
In my opinion, Elmedia Player for Mac would be a great platform. It's a powerful and user-friendly media player that can handle a wide range of video formats. Plus, its ability to download subtitles directly from the internet would make it even more accessible to non-English speakers.
You can download it from here:
https://www.elmedia-video-player.com/