SECAM is/was the French colour tv standard, so unless your recordings originated from across the Channel you’ll be fine.
I’m guessing that the too old video formats is referring to 405 line black and white. Anything recorded on home video in the UK from the mid seventies onwards will be in the 625 line PAL colour signal format, this includes all VHS, Betamax, Phillips Video 2000, Phillips N1500 & N1700 formats as well as Sony Video 8,VHS-C camcorder tapes and Mini DV too.
