Here is an update to SVT-AV1 3.1.2.

https://gitlab.com/AOMediaCodec/SVT-AV1/-/raw/master/CHANGELOG.md

Tested on aarch64.


Index: Makefile
===================================================================
RCS file: /cvs/ports/multimedia/svt-av1/Makefile,v
retrieving revision 1.20
diff -u -p -u -p -r1.20 Makefile
--- Makefile	30 Mar 2025 19:37:23 -0000	1.20
+++ Makefile	15 Jan 2026 04:58:58 -0000
@@ -2,15 +2,14 @@ ONLY_FOR_ARCHS=	${LP64_ARCHS} i386
 
 COMMENT=	scalable AV1 encoder
 
-VER=		2.3.0
-REVISION=	0
+VER=		3.1.2
 DISTNAME=	SVT-AV1-v${VER}
 PKGNAME=	svt-av1-${VER}
 CATEGORIES=	multimedia
 SITES=		https://gitlab.com/AOMediaCodec/SVT-AV1/-/archive/v${VER}/
 EXTRACT_SUFX=	.tar.bz2
 
-SHARED_LIBS=	SvtAv1Enc	4.0
+SHARED_LIBS=	SvtAv1Enc	5.0
 
 HOMEPAGE=	https://gitlab.com/AOMediaCodec/SVT-AV1
 
@@ -28,12 +27,6 @@ MODULES=	devel/cmake
 
 .if ${MACHINE_ARCH} == "amd64"
 BUILD_DEPENDS+=	devel/nasm
-.endif
-
-# LLVM ERROR: Invalid size request on a scalable vector.
-# with 16, 18, 19
-.if ${MACHINE_ARCH} == "aarch64"
-CONFIGURE_ARGS+=-DENABLE_SVE=OFF
 .endif
 
 NO_TEST=	Yes
Index: distinfo
===================================================================
RCS file: /cvs/ports/multimedia/svt-av1/distinfo,v
retrieving revision 1.15
diff -u -p -u -p -r1.15 distinfo
--- distinfo	1 Nov 2024 09:52:30 -0000	1.15
+++ distinfo	15 Jan 2026 04:58:58 -0000
@@ -1,2 +1,2 @@
-SHA256 (SVT-AV1-v2.3.0.tar.bz2) = 9lNYSZ9XKkfWsHbdpzaBqBYrAsC2GaVRvC1i6tjucZo=
-SIZE (SVT-AV1-v2.3.0.tar.bz2) = 10168419
+SHA256 (SVT-AV1-v3.1.2.tar.bz2) = gC6bsrFPZujGOPVIV8y4TTU2FEsK4YufVou/IxTS3og=
+SIZE (SVT-AV1-v3.1.2.tar.bz2) = 10203273
Index: pkg/PLIST
===================================================================
RCS file: /cvs/ports/multimedia/svt-av1/pkg/PLIST,v
retrieving revision 1.4
diff -u -p -u -p -r1.4 PLIST
--- pkg/PLIST	1 Nov 2024 09:52:30 -0000	1.4
+++ pkg/PLIST	15 Jan 2026 04:58:58 -0000
@@ -1,10 +1,10 @@
 @bin bin/SvtAv1EncApp
 include/svt-av1/
+include/svt-av1/EbConfigMacros.h
 include/svt-av1/EbDebugMacros.h
 include/svt-av1/EbSvtAv1.h
 include/svt-av1/EbSvtAv1Enc.h
 include/svt-av1/EbSvtAv1ErrorCodes.h
-include/svt-av1/EbSvtAv1ExtFrameBuf.h
 include/svt-av1/EbSvtAv1Formats.h
 include/svt-av1/EbSvtAv1Metadata.h
 @lib lib/libSvtAv1Enc.so.${LIBSvtAv1Enc_VERSION}