is there an app for this? that can convert my DVD's ripped as .iso files for playback on portable devices like ipads, ipods, & other tablets PCs? something lke a universal portable playback format? & what video & audio settings would be best? or do I have to re rip all the discs into a different format? I would like to know before I put all my DVD's back by my TV, so I dont have to go get them all out over again.