It would be VERY unlikely to be sued for something like this. I believe only the copyright holders would be able to sue someone, and it's quite expensive and hard-work to go through with a lawsuit. I don't think big companies would spend their time looking for illegal videos on youtube to sue people.
They would just contact Youtube, report the vieos and have them taken down, but not sue them.
Basically, they wouldn't sue someone just for some videos, although they would be able to, technically.