Transferring Minecraft world from iPad to ps4 using usb

I uploaded my Minecraft worlds from my iPad to iCloud and downloaded them to a PC, which all went fine. I then downloaded the worlds to a USB from the PC and plugged the USB into the PS4, but when I tried to upload the worlds to the PS4 it said there was no saved data and I am not sure what to do.

Ps4 encrypts its save files and requires them to have been encrypted via a PS4 to read them back, so sadly, you will not be able to transfer files directly from iPad/PC/Android.

You can transfer them via realms (though this will require you have PSplus on your psn account) now that PS4 finally supports them. Setup a Microsoft account and link it to the PS4 account you use (this is a one time operation so make sure you link the proper Microsoft account to the proper psn account). Buy a realm and then upload your save to your realm from your iPad using the same Microsoft account. You can then download the realm save on the PS4.