Xavier Dolan's film Mommy is really good. He knows that, obviously, and just wants his masterpiece left as is. In a passionate letter posted on Twitter yesterday, the director slammed Netflix UK for messing with the aspect ratio of his film, and he wasn't having it.

Throughout the majority of the film, Dolan presents Mommy in a 1:1 square, increasing the tensity around his main character and visually representing his inner claustrophobia, which is an important part of the narrative. But at important moments throughout the movie, he manipulates the experience by expanding the frame to 1.85:1, in order the monitor the viewer's experience.

When Netflix UK made the decision to edit the crucial aspect of the film, Dolan took to Twitter to lash out at the company for diluting his vision. "You did not direct this movie. You did not write this movie. You did not produce this movie. So can anyone or anything expect me warrant the liberty you took upon my work? No."

Netflix UK responded with a tweet of their own.