No, no-one said anything about starting a DVD shop in the 1980's.
I think you may be remembering that Billy ( the policeman who got sent back to 1969 ) said in his hospital bed that he moved into publishing, then video production and then on to DVD ( which is how he planted the Doctor's messages as DVD Easter Eggs ).
Kathy, the girl sent to Hull around 80 years ago, said in a letter to Sally, that her brother works in a DVD shop, so that Sally could find him and tell him Kathy wouldn't be coming home.