Apple ProRes Export (with custom dimensions)

Hi all,
I want to export my project and keep its quality. The video is going to be played on a 490x400 video player, and I'm looking for the best way to export the FCP project. I was told to use Apple ProRes 422, but the closest dimensions I can use is 960x720. That makes the video too wide, and everything looks stretched.
I'm a little new to this, so any help you guys can give me would be great
Thanks!

I think that if, instead of choosing Apple ProRes 442 and one of it's default dimensions (eg 960x720) you can scroll right down to the bottom of the export options and choose 'Custom'.
When you choose Custom, the Sequence Preset Editor opens, in that box, under the General tab you can choose your own custom dimensions, ie 490x400. Beneath those settings theres a section entitled QuickTime Video settings - within here you can select Apple ProRes 442. Select that, 'OK' it, and then export from there.
N.B - All of this is from the 'Export to Quicktime Movie' option.
I've never actually tried that so it might not work but maybe its worth a go!

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