Sorry, seriously not being rude here, but your question simply doesn't make sense. What does "now if you want to have a format" mean?
Who/what are you producing content for? Do they have specifications for that content? Video/film production is a very technically precise medium, and you need to provide us with some technical information if we can even start to answer your questions.
Yes I completly understand your question.
This is how it is?
I usually produce movies in the HD format 1920x1080 ( 16:9)
I recently made a short title film for our local cineam who had installed a digital projector ( format DCP)
When viewing the film on the cinema teh film seemed so small compared to the other films. It was in a box and not until the corner of the screen.
Then the sound editor said it was the wrong format. It has to be 2:35 he said but I must be 2:40:1 I guess.
I had a look in the presets in AE but could not find anything that could seems right. I also searched on the net and did not find any thing that helped me. I normally know the technican demands but now I am lost.
And maybe the problem with the small film was not a format issue.
I hope this makes more sense...
You're throwing numbers around which don't mean much or explain the problem. It's not much use knowing a ratio without knowing the resolution requirements. And th sound guy is probably not the best guy to ask about video requirements. :-)
Speak to the most technically proficient person at the cinema and ask for the specific file requirements for the content they display:
Video codec and specs
Audio codec and specs
Most cinemas can display various ratios and digital display resolutions. The majority of cinema advertising I produce is in 16:9 ratio at 1920x1080.
Yes it think the problem with the small image is somewhere else.