ffmpeg command depreciation in php

my script uses old code to run ffmpeg but when i update my ffmpeg to ffmpeg version N-94168 it stopped converting. what do i need to change to make this line work again?

"$ffmpeg -y -i $input -acodec libfdk_aac -ar 44100 -ab 96k -coder ac $add_fmeful -me_range 16 -subq 5 -sc_threshold 40 -vcodec libx264 -s 1280x544 -b 1600k -cmp $chroma -partitions +parti4x4+partp8x8+partb8x8 -i_qfactor 0.71 -keyint_min 25 -b_strategy 1 -g 250 -r 20 $addpre $hdoutput"