Translate Perspective Videos into Catalan

Hi!

I'm an HTML teacher at a Catalan university and I'm also writing content
for a module on accessibility and usability. I have found your Perspective
Videos at https://www.w3.org/WAI/perspective-videos/ really interesting to
help students understand the importance of caring for accessibility in web
development.

I'd like to include these videos in the texts I am preparing, but I'd like
to be able to translate them into Catalan language (at least, the captions
on Youtube but, if possible, also the speech). Before September 2020 this
was possible directly from Youtube, as a contribution from the community,
but now this system is not available any more.

Is there any way that I can contribute with a Catalan translation?

Thanks in advance,

Cinta Màdico