Question

We arrvied an hour late.the film had begun an hour earlier

Answer 1

Мы прибыли на час позже.Фильм начинался на час раньше.

Answer 2

It sounds like you arrived at the film an hour late, and by that time, the film had already started an hour earlier than your arrival. This means you missed the beginning of the film by an hour.

Answer 3

It seems like you're describing a situation where you arrived at a film or event an hour late, and by that time, the film had already started an hour earlier. This means you missed the beginning of the film and joined it already in progress. It's always a good idea to double-check the showtimes to avoid such situations in the future.