Hi Markus
I want to do somewhat the same thing as you. We have all of the Avid hardware, and HD tape machines. I have international groups that are editing on FCP. I want to capture using my Avids in HD DXN145, consolidate to a Mac Drive and ship the drive to the international groups. I have heard that FCP can install the DNX codecs, and that it is a free download from Avid Web site. See this Thread near the bottom https://forums.creativecow.net/thread/8/859345
We have FCP 5 on an IMac, and MacBookPro. I just have not had the time, and I am a PC guy, learning Macs. I don’t want to blow up my Tiger install. I need to find away to Snapshot the Mac drive. We don’t have any Mac Experts.
But it seems that this would be your best answer. You need to capture in DNX145 which uses the MXF wrapper. Then it seems like the workflow is to export the MXF files to QT on a Mac Formatted drive. Though I don’t know this for sure. It might be that you can leave the files in MXF and export a QT reference file. Then my understanding is with the DNX145 codec installed in FCP you should be able to use the Avid captured files. If you leave the files in the MXF wrapper I believe the FCP will extract the data from the MXF and put the QT wrapper on the data. One way or the other time consuming.
Good luck let me know how it works.