Once again, thank you all for the quick responses!
I had already decided to try exporting using the animation codec, and then I read Gary’s suggestion, so I’ll try that experiment.
I’m still a bit confused about it all, I must admit. Is there a “generic” QT uncompressed codec? Or are all uncompressed codecs proprietary, i.e Black Magic, Aja, etc.
And if there is such a beast, is it true that one only has access to it through FCP?