Burning files and directories with long unicode names

Burning files and directories with long unicode names

Is there any CD/DVD burning app/ISO format which supports files and
directories with long non-English (unicode) names? Apparently Joliet-long
ISO standard supports filename up to 103 characters, but I'm not sure if
it supports unicode as well, and if Brasero or any other Gnome app can
burn DVDs with this format. I found out that an app called gBurner does
quite a decent job, but unluckily it's a Win app.
I have to burn the contents of my external HDD, but since my data contains
many downloaded pages (with companion HTML pages' directories containing
pictures, JS scripts, CSS styles, and so on) and since many of those
filenames contain non-English characters, I need some app/format to be
capable of burining them safely on a DVD (without the old-fashioned need
to compress the contents under a English filename), such that the content
is readable on Linux and Win machines.