Why зтот and not зту
In russian when the object is inanimate, you shouldnt use the accusative case. Only in animate objects, like animals and people.
Yes but you shouldn't use the accusative case only if the noun is both inanimate and masculine or plural. If it's feminine or neutral although it's inanimate, you can use that.
Фильм - мужской род, единственное число
So if i want to say "I do not know this film", I's use "я не знаю эту фильм."?
The correct version is "Я не знаю этот фильм".