C:\Windows\system32>"D:\CPP\skinamer\skinamer.exe" --dir "D:\Series\30 Rock" --mask "30.Rock.S%season%E%episode%.HDTV.XviD-%group%.avi" --omask "season=%season%,episode=%episode%,group=%group%" --conv
 group,2HD=1337
skinamer v0.2 -- by skier_ (C) 2010
Invalid filename: '.', mask and filename don't match at a certain point!
Invalid filename: '..', mask and filename don't match at a certain point!
30.Rock.S04E01.HDTV.XviD-FQM.avi => season=04,episode=01,group=FQM
30.Rock.S04E02.HDTV.XviD-FQM.avi => season=04,episode=02,group=FQM
30.Rock.S04E03.HDTV.XviD-FQM.avi => season=04,episode=03,group=FQM
30.Rock.S04E04.HDTV.XviD-LOL.avi => season=04,episode=04,group=LOL
30.Rock.S04E05.HDTV.XviD-LOL.avi => season=04,episode=05,group=LOL
30.Rock.S04E06.HDTV.XviD-LOL.avi => season=04,episode=06,group=LOL
30.Rock.S04E07.HDTV.XviD-LOL.avi => season=04,episode=07,group=LOL
30.Rock.S04E08.HDTV.XviD-2HD.avi => season=04,episode=08,group=1337
30.Rock.S04E09.HDTV.XviD-LOL.avi => season=04,episode=09,group=LOL
30.Rock.S04E10.HDTV.XviD-LOL.avi => season=04,episode=10,group=LOL
30.Rock.S04E11.HDTV.XviD-2HD.avi => season=04,episode=11,group=1337
30.Rock.S04E12.HDTV.XviD-LOL.avi => season=04,episode=12,group=LOL
30.Rock.S04E13.HDTV.XviD-LOL.avi => season=04,episode=13,group=LOL
30.Rock.S04E14.HDTV.XviD-LOL.avi => season=04,episode=14,group=LOL
30.Rock.S04E15.HDTV.XviD-LOL.avi => season=04,episode=15,group=LOL
30.Rock.S04E16.HDTV.XviD-LOL.avi => season=04,episode=16,group=LOL
30.Rock.S04E17.HDTV.XviD-LOL.avi => season=04,episode=17,group=LOL
30.Rock.S04E18.HDTV.XviD-2HD.avi => season=04,episode=18,group=1337
30.Rock.S04E19.HDTV.XviD-FQM.avi => season=04,episode=19,group=FQM
30.Rock.S04E20.HDTV.XviD-LOL.avi => season=04,episode=20,group=LOL
30.Rock.S04E21.HDTV.XviD-LOL.avi => season=04,episode=21,group=LOL

Restore commandline:
ren "D:\Series\30 Rock\season=04,episode=01,group=FQM" "30.Rock.S04E01.HDTV.XviD-FQM.avi"
ren "D:\Series\30 Rock\season=04,episode=02,group=FQM" "30.Rock.S04E02.HDTV.XviD-FQM.avi"
ren "D:\Series\30 Rock\season=04,episode=03,group=FQM" "30.Rock.S04E03.HDTV.XviD-FQM.avi"
ren "D:\Series\30 Rock\season=04,episode=04,group=LOL" "30.Rock.S04E04.HDTV.XviD-LOL.avi"
ren "D:\Series\30 Rock\season=04,episode=05,group=LOL" "30.Rock.S04E05.HDTV.XviD-LOL.avi"
ren "D:\Series\30 Rock\season=04,episode=06,group=LOL" "30.Rock.S04E06.HDTV.XviD-LOL.avi"
ren "D:\Series\30 Rock\season=04,episode=07,group=LOL" "30.Rock.S04E07.HDTV.XviD-LOL.avi"
ren "D:\Series\30 Rock\season=04,episode=08,group=1337" "30.Rock.S04E08.HDTV.XviD-2HD.avi"
ren "D:\Series\30 Rock\season=04,episode=09,group=LOL" "30.Rock.S04E09.HDTV.XviD-LOL.avi"
ren "D:\Series\30 Rock\season=04,episode=10,group=LOL" "30.Rock.S04E10.HDTV.XviD-LOL.avi"
ren "D:\Series\30 Rock\season=04,episode=11,group=1337" "30.Rock.S04E11.HDTV.XviD-2HD.avi"
ren "D:\Series\30 Rock\season=04,episode=12,group=LOL" "30.Rock.S04E12.HDTV.XviD-LOL.avi"
ren "D:\Series\30 Rock\season=04,episode=13,group=LOL" "30.Rock.S04E13.HDTV.XviD-LOL.avi"
ren "D:\Series\30 Rock\season=04,episode=14,group=LOL" "30.Rock.S04E14.HDTV.XviD-LOL.avi"
ren "D:\Series\30 Rock\season=04,episode=15,group=LOL" "30.Rock.S04E15.HDTV.XviD-LOL.avi"
ren "D:\Series\30 Rock\season=04,episode=16,group=LOL" "30.Rock.S04E16.HDTV.XviD-LOL.avi"
ren "D:\Series\30 Rock\season=04,episode=17,group=LOL" "30.Rock.S04E17.HDTV.XviD-LOL.avi"
ren "D:\Series\30 Rock\season=04,episode=18,group=1337" "30.Rock.S04E18.HDTV.XviD-2HD.avi"
ren "D:\Series\30 Rock\season=04,episode=19,group=FQM" "30.Rock.S04E19.HDTV.XviD-FQM.avi"
ren "D:\Series\30 Rock\season=04,episode=20,group=LOL" "30.Rock.S04E20.HDTV.XviD-LOL.avi"
ren "D:\Series\30 Rock\season=04,episode=21,group=LOL" "30.Rock.S04E21.HDTV.XviD-LOL.avi"