Hi Bill,
Short answer: For the time being you'll need to use XDCAM Browser 1.1 to import these clips.
Long-ish answer: My first reaction to this post was "ah, of course, the 720 24 and 30p codecs did not exist in the optical XDCAM world prior to the 500, so we're going to have to use XDCAM Browser as Transfer is E.O.L..." I checked on my system here and saw the same problem. But I did some digging and found that these newer codecs are in fact supposed to have support in Transfer 2.12. What's strange is that the codec support comes from Apple, and when I import 720 30 or 720 24 into FCP using Browser, the video is fine and the correct codecs are listed for the clips. Based on this, I would not expect to see the 'no codec' warnings in XDT. (Even if I go into the prefs and enable "import clips with no codec present" the clips are not import-able.)
I will have to check with our development group on this; in the meantime you can use XDCAM browser, which I've linked below. Apologies for the confusion.
https://www.servicesplus.sel.sony.com/sony-software-model-XDB1.aspx
Will let you know as soon as I confirm the support level in Transfer for the 720 30/24p codecs..
Best,
Ian
Ian Cook
Sony Broadcast and Professional Company