Modric was asked about the video aired by the Catalan regional television station, insulting Whites' players and comparing them to hyenas.
He said: "I do not know what their intentions were. I've seen it on TV and do not know what to say because I have played in Croatia and England and I have never seen anything like it. That has nothing to do with journalism and a lot less to do with football.
"Making videos like that and talking badly about Real Madrid's players is not right, is not acceptable and is a bad example for youngsters. I have not spoken about it in the dressing room. Maybe some did, but I have not spoken about it, but I've never seen anything like it."