What stream should i choose to become a Movie director?

[Kurniawan]

You honestly have to check to the university itself. I know most of Indonesians do not used to do a thorough research online. But seriously, tried to look up online. Look at the website of the university. Usually, they lists the instruction pretty clear. If it is not clear just email them. They will answer you for sure. However, if you ask the around this time, it takes longer because they are in a busy season to prepare accepting new students for Fall. But just give it a shot, who knows they will answer your question fast enough.

I am not entirely sure, but it does not really matter which stream you choose. Because film/media itself is neither business, nor science. It is more towards arts which Indonesia doesn't have. So, your choice.
The advantage of taking science stream in Indonesian high school is that you get the skill of thinking logically (because you study stuffs like calculus which requires rational and logical thinking).
Being able to think logically is beneficial in any kind of industry you choose.

If u were to choose business (social) stream, u will be more likely having a beautiful life in high school because somewhat it tends to be easier than science in Indonesia. Also if you want to become a movie director with the goal to earn money, you will have the advantage of learning economics, and bookkeeping.
Your choice!
Hope that helps.