The food saver vac advertises as long as 5 years when properly packaged in the freezer which I can only attest to 4 years since that is as old as my machine and I just pulled out some zucchini and fried it. It was a little soft after the thaw but came out as good tasting as it went in.
I used to wrap my meat in butcher paper in deer season and our rule was if next deer season it wasnt gone, it was time to trash or cook it up with rice for the dogs. I do know air easily permeates the butcher wrap and quickly burns meats.
Cooking for the love of it.