Here is an option you can use to backup your Dvds nowadays, as Dvd Shrink is no longer updated & can’t handle newer Dvds. Recommended blank media would be Verbatim, (widely available), or Taiyo Yuden, (available online). General rule of thumb is to burn at half the maximum rated speed of your blank media, for example 16X, burn at 8X. Posts #67 to #74, but please also read posts #77 & #78. BTW your Sonys shouldn’t be too bad.