This is a technical question, my client want to project the animation i'm working in a specific place with measures of 8.54x4.24mts.
I know the try and error will be in the projectors settings one day before the event (client specify that) , but i was wondering if i export the video in that size it will work like a regular video? and do you know a site to make the conversion of meters to pixels?
Since you already know the proportions of the image, the only additional thing you need to know is the resolution of the projector. Make the comp in the proportion of 8.54 to 4.24 fit into that amount of pixels. The size of the projected image is totally independent of this, as it depends on how far the projector is (and what type of a lens it has, etc.). I don't see how that side of things would be your problem.