Hello ,I'm want install ffmpeg at cpanel/WHM, I am use the WHMXtra to install it . but ,it's display as : ERROR: libgsm not found. I am try it at Centos ,use the command as :rpm -qa | grep gsm ,it's display as : gsm-1.0.13-11.el7.x86_64 gsm-tools-1.0.13-11.el7.x86_64 so,How can i do?