staxrip trouble need alternative please

[lazyjss]

I am new to video encoding so i am thankful for any help.

I have been using staxrip as a front end to encode mt media library and have run into trouble with the output file frame rate becoming variable instead of constant 23/976 like the source.

This is happening with both x264 and x265, from what i found online it seems to be a mkvextract problem, regardless could anyone tell me how to get a constant frame rate with stax or perhaps recommend an alternative, I will be using x264 and x265 to shrink blu ray remuxs.

Thank you