400 and asking to confirm form submission on submit

Some of my users are seeing 400s for flourishing-piroshki-3e90ac.netlify.app upon form submission when trying to submit minute long .mov files and/or pdfs as file fields.

Can these be supported?

@will.weiss1230 , thanks for the post.
Kindly find below the limitations of Netlify Forms file uploads

Hope the above helps.