@Screwfck I thought the same until I looked it up on IMDB. Turns out that this is intentional. It was filmed in that ratio.
@gansu25 On 17 January 1990, at the train station in Trappes, he was struck by a passing train travelling at 150 km/h. He lost the use of his right arm in the accident, which killed another young man, Jean-Paul Admette, the son of the singer Michel Admette from Reunion.