Only el7 and el8 will be tested, el8 still wip

ffmpeg.spec

@@ -7,7 +7,7 @@
 # Cuda and others are only available on some arches
 %global cuda_arches x86_64
 
-%if 0%{?rhel} && 0%{?rhel} < 8
+%if 0%{?el7}
 %global _without_aom      1
 %global _without_frei0r   1
 %global _without_mfx      1
@@ -15,6 +15,11 @@
 %global _without_vpx      1
 %endif
 
+%if 0%{?el8}
+%global _without_aom      1
+%global _without_mfx      1
+%endif
+
 %if 0%{?fedora}
 %ifarch x86_64
 %global _with_vmaf        1