Am I the only one who thinks this is a lovely thing to do? Especially for adult students who've made learning fit in with probably a job/jobs and possibly caring responsibilities. If you don't want to engage in it, just email a response saying no thank you but this whole idea will have come from a comms team who are trying to find a way to help students feel celebrated and supported, a way to show the ripples of learning on families, partners, colleagues.
As others have said, there's every chance this is for a rolling film in a foyer or on screens as people get into their seats or mingle. You are welcome to ask the university or college about how they plan to use the video so you have a better idea about what to expect.
My first graduation was a very formal affair, my second was a little different as it was from a conservatoire.
If you don't like it, tell the people who've contacted you. Opt out if you want.
I've not been to a graduation lately but I have been to award ceremonies and where there are short videos of people with comments, praise, congratulations etc it all gives more context, some more human understanding about the individuals involved. It might not be a big deal to you, but it could be a big deal to someone else.