Fix conditionals

ffmpeg.spec

@@ -14,10 +14,12 @@
 %global _without_opus     1
 %global _without_srt      1
 %global _without_vpx      1
-%global _without_vapoursynth 1
 %endif
 
 %if 0%{?fedora} || 0%{?rhel} > 7
+%ifarch x86_64 i686
+%global _with_vapoursynth 1
+%endif
 %ifarch x86_64
 %global _with_mfx         1
 %global _with_vmaf        1
@@ -142,7 +144,7 @@ BuildRequires:  libv4l-devel
 %{?!_without_vaapi:BuildRequires: libva-devel >= 0.31.0}
 BuildRequires:  libvdpau-devel
 BuildRequires:  libvorbis-devel
-%{?!_without_vapoursynth:BuildRequires: vapoursynth-devel}
+%{?_with_vapoursynth:BuildRequires: vapoursynth-devel}
 %{?!_without_vpx:BuildRequires: libvpx-devel >= 1.4.0}
 %{?_with_mfx:BuildRequires: pkgconfig(libmfx) >= 1.23-1}
 %ifarch %{ix86} x86_64
@@ -300,7 +302,7 @@ This package contains development files for %{name}
     --enable-libv4l2 \\\
     %{!?_without_vidstab:--enable-libvidstab} \\\
     %{?_with_vmaf:--enable-libvmaf --enable-version3} \\\
-    %{!?_without_vapoursynth:--enable-vapoursynth} \\\
+    %{?_with_vapoursynth:--enable-vapoursynth} \\\
     %{!?_without_vpx:--enable-libvpx} \\\
     %{?_with_webp:--enable-libwebp} \\\
     %{!?_without_x264:--enable-libx264} \\\