So I have a Mp4 file, and I want to add multiples subtitles choices to it that will stay forever. A bit like how YouTube, like there are the subtitles choices, and you select which one you want or none if you want none.
The problem is that I don't found how to do it.
I tried with VLC, but it doesn't add the subtitles as a choice it just put them on the video. I've also made some research, but it's always the same over and over.
So if you know how to do it or have a website/software (free is better) that does it, it'll be very welcome.