bad frame rate

[ptidav]

Hello,
when i make a x265 1080p encode (bluray source), the frame rate reported after the analyze process is incorrect : 24fps instead of 23,976.
If i launch the encode, the content is encoded in 24fps....
If i analyze the source with media info the frame rate reported is correct : 23,976

I don't have this problem with a 4K bulray

Any idea ?? or there is a way to force/modify the frame rate before launching the encode ?

Thanks