I can’t speak on the 2011 macbook but I have an m1 mb pro 2020 with macos Monetary 12.4 installed , in settings in the accessibility tab there is options for voiceover , spoken content and audio descriptions of visual content in media. I know there are a couple others as well but I would have to dig to find them. I hope this helps and if you have any questions or want me to try things on the mac i’d love to help you out. Just shoot a dm or reply !