I pretty sure its not a setting on the camera at the very least.
Many attempts at converting the audio to a different format failed also, so am lost for ideas.
I do also use the Mic with the H4N and it works fine in that scenario, note you will need some additional equipment because its way to quiet to be usable with just the NTG->H4N
I can’t remember the name of the plug I use, but it cost £70, plugs into the H4n and the NTG into the plug and it boosts the signal. its quiet small, so a preferable option for me over using an alternative preamp box type alternatives.
will check details when i get home, I havnt actually touched it in several months.