I fink that the dictionary file of the sdk(xmldict.xml) not support some descriptor(eg:AES audio descriptor),will support this?and when.
As MXF is extensible the dictionary can never be complete.
At the present there are a number of significant items that are missing (such as the AES3 descriptor) due to not being used by existing applications.
If you wish to use a new set then either:
a) Define the set yourself and if possible submit the changes back to SourceForge directly (in accordance with checkin rules) or by e-mailing to another developer.
b) Speak very nicely to another developer and see if they will add the new data for you.
Also, we are working towards auto-generation of the dict files from the SMPTE registry. This won't be ready for a few weeks, however