Dear Professor, I’m not feeling well today and need to miss today's seminar. Would it be possible for me to access the recording later?
I'm sorry for the short notice. All the best,(name) Hello, does this sound natural?

Dear Professor, I’m not feeling well today and will unfortunately miss today's seminar. WIll it be recorded? Would it be possible for me to access the recording later?
I'm sorry for the short notice. All the best,(name)