Any way to use Ext4 in Kodi/Android?

Hello all

So, after some time of using Kodi in a linux machine, I acquired a nice nvidia Shield. First problem: my media is in an Ext4 disk that I was planning to connect via USB…

Anybody knows of a trick to support ext4 without rooting the device? I know I can create a NAS with an old machine (the stupid Xfinity modem does not support connecting HDD), but actually I wanted to reduce the number of boxes/cables laying around.

Moving all the media to other disks and re-format is not an option 🙁

Thanks !!

Max