Do my boyfriends parents like me?

So ever since i started dating my boyfriend (we’ve been dating ali most four years) his parents seem to not like me much. Whenever I come to his house they never say hi when i come in the door when they both see me walk in, they just stay silent for a while. His parents will also yell at him about the dumbest things like a SOCK BEING ON THE FLOOR, which makes it very awkward. When he says we’re heading back to my house they get a tone and say i guess or a “ugh” vibe is given off. Another thing is his brother and me have a love hate relationship, sometimes when he’s angry he’ll say really mean or rude things to me that cross the line, his parents don’t say a word. I’ve asked my boyfriend to speak to his parents about the way his brother treats me, but his parents have yet to do anything but make excuses for him. I’m at my breaking point i barely go over there anymore.