How can I shoot a 60fps video? I have xiaomi redmi 5 plus/Note 5 that have the option to record 1080p60fps but actually the result would be 30fps .. So i have rooted and enabled camera2 api .. But I still have the same result even with google camera .. So I want to record with at least 720p60fps .. Any help ??
Disclaimer: Haven't tried out this proceedure since my device is not current supported.

Requirements:


Magisk (or TWRP)
MIUIcamerav2_whyred (magisk module)


Since you have a rooted device I'm assuming you have magisk installed already, if not then install it, as it will make the work easier.


Basically you need to download the module MIUI Camerav2 port (from Mi A2 series) and flash it in recovery/via magisk manager.



  Notes: For  MIUI based ROM, the packages are a simpler version
  because there is no need to install another camera, stock one is
  already MIUI Camera v2. The mod just enables more functions in the
  stock app (you can see from the function list what is enabled and
  what is stock). Depending on the MIUI version there are more function
  like
  60fps available. 


If camera don't start check permission, try to clear app data (it will reset permission too). 
If still not working wipe cache and dalwik from TWRP.