You should ask him to do the real practice with you.
You should join him when he watches video. There is nothing wrong with that.
People who watch sex video and read magazines are not always a pervert.
There is nothing wrong with masturbation, it is quite natural. Majority of people (both sexes, or more) do it.
Ask yourself some questions.
Have you done enough to satisfy him sexually?
Have you ever asked him whether he is satisfied?
Were you not happy because he did not have sex with you but instead helping himself?
If what you have been doing is not enough then have a talk with him and ask him what he would like.
It takes two to tango.
You cannot just throw away your marriage life based on just dirty video/ magazines and more importantly occasional DIY jobs.
All the best.