Problems with big file

[cesko1982]

Hi to all, i have a external hdd lacie d2 network 2. I have a problem with samsung smart tv: i can't play mkv film. i have try this simple test: i copy a film into a usb storage (with ntfs file system) i can play the film in the tv, if i try to play the same film in the same tv with the same usb storage but fat32 file system the tv give me a error signal! (the same error if i try to play the same film from the lacie nas)
i have try to check if it is possible change the file system of the lacie hdd but it is impossible!
Someone can help me???
thank you
Francesco