Thanks for your reply Rick.
I am already using Prores LT and they are not quite so big when using compressor. I’m not sure why they were so big using MPEG Streamclip (again Prores LT).
If I set the sequence settings to Prores and then drag the XDCAM footage in, it will ask me if I want to match the settings. If I say ‘no’, will it convert the video to Prores to match the sequence? If so will I end up with huge render files? Even if that’s the case, then it would mean I don’t have to convert EVERYTHING so it would possibly come out smaller. Is that how it works.
Thanks a lot Rick, I really appreciate that.