Could you please advise if it is possible to download big picture, re-size it using some software (nconvert.exe, for ex.) and to upload it into catalog? Everything should be done automatically (via script).
The main questions are:
1) how to identify filename of downloaded picture (to use it in command line of conversion tool)
2) how to upload result picture back? (or if the same filename is used is not it required?)
[the most interesting item: it should work correctly even if pictures are stored in catalog file itself].