italian audio track

Hi all 

I have

I have got a strange bug with multiple audio tracks
I rip my video files with handbrake (.M4V) 
Let’s say for instance I put 3 audio tracks:

  • 1 italian
  • 2 english
  • 3 spanish

When I watch them in my ATV, I find: 

  • italian (KO)
  • italian (KO)
  • spanish (OK)

And the language of the two audio tracks called “italian” is english??
Moreover they are both selected and I cannot switch from one to another 
the only correct choice is Spanish (or another language other than English and Italian…)
I guess there is some conflict with system language?
On the Mac with quicktime they play correct, this is not a problem of handbrake 

Any idea?

Thanks Francesco