What file format should I save my show in? The file will be on my laptop, and it will be connected to an Epson projector. The auditorium holds about 100 people, and it will be dark in there with a large white screen, like a movie screen, on a stage.
Depends what device you are using as input to the projector and the capabilities of that device to output a large streaming file.
Safe-ish bet will be a high data rate H264 file.
I'll be using my laptop, and I can add more ram to it if necessary.
I don't know what you mean by high data rate H264. The preset for H264 is 3 gpp 640 x 480. Is that what you mean?
Look thru the long list of H264 presets for something that matches your Sequence /Source footgae setting eg 1080p
THen check the data rate is at least 10mbps.
OVer do the data rate and your laptop maynot cope.
Do some tests with a portion of your project.