258 characters ... maximal length for the entire filepathname in the root folder of a disk.
259 characters ... maximal length for the entire filepathname in a subfolder of a disk.
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what is maximum number of characters allowed in filename?
Yes, you can do it, using simple math functions from the Mp3tag scripting language.
You have to measure the entire length of the folderpath, then calculate the longest possible filename_ext.
DD.20140311.1412.CET