Seems slightly overdramatized, and a lot of the footage is looped, and shown in a lighting that makes it even gloomier, but that's probably how it can look in many places. I was trying to find this site I saw a few years back, which mas made in collaboration with the Helsinki University Animal Welfare department and some swine and egg producers. They showed the whole process from beginning to end, with some quite graphic but interesting videos. They didn't try to hide that it looks quite gruesome, but also showed what steps are taken to make it as humane as possible.
But however you put it, if people want to eat humanely treated animals, they're going to have to start paying more for their meat. A lot of the stuff shown on that video is just pure animal cruelty, though. That would be easy to strip away. I think one of the problems is that the people working there have probably become completely numb to the whole process. It must not be an easy job to do, in the long run.