[H] oversized DVD

[Winterlight]

I have a BBC series that, over a period of many years, I bought the 
DVDs for . Now I am backing them up by ripping them to iso files with 
DVD decryptor.  Each DVD holds three to four episodes. The iso files 
are all between 5.7 - 7.7 GB in size. Is there an app that makes it 
easy to reduce the ISO and then burn to a DVD all at one go. thanks