the majority of programs i watch have 4min commercials, please if possible can we (i) have a skip time length of 4 mins.
My approach would be to add an "advanced" possibility to manually define skip times by editing a text field. The text field would contain comma separated skip times in seconds. For instance, with the default skip times today, the field would look like this:
15,30,60,180,300,600,900,1800,3600,7200