This concerns the video linked from the website: I wonder why some Youtube videos have subtitles disabled? There are people needing subtitles! A few years ago

This concerns the video linked from the website: I wonder why some Youtube videos have subtitles disabled? There are people needing subtitles! A few years ago I did an experiment: I downloaded the video and re-uploaded it to Youtube just to enable the subtitles, but I got a warning because of copyright violation, so I don't do that anymore.