International stars, intensive campaign work and trying out their ideas on many.

These are some of the measures taken by the Swedish director.

- If you want to be successful in these rooms, you have to speculate.

It's the same when it comes to the red carpet in Cannes.

If you have a film premiering in competition at Cannes, then you must have stars who can walk the carpet, says Ruben Östlund.

Hear Ruben Östlund talk about three factors to have a chance of winning the Oscar in the clip above. 

A longer interview can be seen here on SVT Play.