A screening at the Cannes Film Festival had to be stopped after technical problems during the first few minutes of the film.
Okja, starring Tilda Swinton and Jake Gyllenhaal, had been booed by some in the audience after the Netflix logo appeared at the beginning.
But it then became clear the film was playing in the wrong aspect ratio.
The film has been controversial because producer Netflix has refused to screen it in French cinemas.
After the jeers, the movie was stopped and restarted without explanation.
