Enabling virtual background on an IPad mini 4? Is it doable?

[Bort]

iPad minis are not listed on the virtual background system requirements article, so it is likely not supported for that model. 

[Rupert]

Unfortunately not.  Virtual Background for iPad is only available on:

5th and 6th generation 9.7" iPad
7th generation and higher 10.2” iPad
iPad Pro

Rupert