I am the only vegetarian in my house. No matter what I say my family won’t change. what makes me upset is they won’t even try the food i make. Sometimes you just have to stick with yourself on the subject.
Honestly, sometimes you just have to live with it. My parents didn’t support me when I went vegetarian or vegan, so I cook all my own meals. Eventually, they’ll come to accept it or at the very least, tolerate it. I’m guessing the reason they didn’t want to watch videos from meat.org is because they aren’t ready to own up to the cruelty they support and they’re not ready for change. (Much like my family was.) Stand firm and show them you wont compromise your beliefs. Stand up for what you believe in Best of luck !!
Just be patient and try to introduce other things like health and ethics into it. My mom wasn’t keen on it at first, but eventually she came around and the whole house has cut their consumption of animal products by a lot.