So you are editing the DSLR footage, and want to export it to be in the EXACT SAME format as it was recorded by the camera? As if the edit came from the camera itself?
First off, FCP doesn't work with the camera native files well at all. They need to be converted to ProRes before edited. But you can TRY to edit them in the same format and then just hit FILE>EXPORT>QT movie...self contained, no recompression. FCP will make sequence settings to match the footage if you use native H.364. But it will be sluggish, and might do wonky things to the exported file. because, again, FCP doesn't work wiht H.264 native files well.
Shane
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