camera resolution in ported rom

hello
i port rom to my infinix zero 2 device MTK6592
first camera wasn't working at all
i Replaced from stock to port
libcameracustom.so
libfeatureio.so
libjpeg.so
libdpframework.so
and now working fine but max resolution is 8mb but my cam real resolution is 13mb
what should i do to resolve that
by the way i tryed many apps and all of them had max resolution 8mb