ts media 2 questions

hi all.
can someone please explain to me what are dependencies.
i have read on the forum about them being needed for ts media + iptv list updater.
i dont understand what there for or how to use them.
finally i have the vu zero with vix image.when in ts media/iptv i came across thomasiptv.
this shows a very limited amount of 3d and i mean limited,but it showed a documentry about ocean predators,it was fantastic to watch.
i have tried to look for other 3d content in ts media but i dont seem to be able to find it.
can someone give me a few pointers on the above questions please.