It hasn’t been disabled on Arch as far as I know.
It’s still on 22.2.3 though but I didn’t find anything indicating that it will be disabled as they explicitly enabled it when upstream changed it to disabled by default. https://github.com/archlinux/svntogit-packages/tree/packages/mesa/trunk
Using https://gitlab.manjaro.org/packages/extra/mesa
and adding the -D video-codecs=vc1dec,h264dec,h264enc,h265dec,h265enc \ line back, compiling and installing the local package should enable it back.
diff:
@@ -78,6 +78,7 @@
-D osmesa=true \
-D shared-glapi=enabled \
-D microsoft-clc=disabled \
+ -D video-codecs=vc1dec,h264dec,h264enc,h265dec,h265enc \
-D valgrind=enabled
# Print config
@philm any chance of this being reverted to being enabled as it’s on Arch?