AV1 computational performance and quality has improved greatly over the least few years and I find that it has become a viable free alternative to the encumbered H.264 for my use cases. This patch adds support for graphics/ffmpeg for svt-av1, which we already have in ports as multimedia/svt-av1.

Tested on amd64 with current svt-av1 and Brad Smith's 3.1.2 patch sent to ports@ last week, but would appreciate testing on other platforms. You can for example use:

	ffmpeg -f lavfi -t 17 -i testsrc=size=1920x1080 -c:v libsvtav1 /tmp/svtav1test.webm

commit ba69fd580240368640506a9a45ddebf89a4b456d
from: Pontus Stenetorp <pontus@stenetorp.se>
date: Sat Jan 17 14:37:46 2026 UTC

graphics/ffmpeg: Add svt-av1 support

Tested on amd64 with current svt-av1 and Brad Smith's 3.1.2 patch.

commit - 0ed29bf3df2017459c814f2eef19265a4a7441fe
commit + ba69fd580240368640506a9a45ddebf89a4b456d
blob - 49f9b0b67c61e4daae76784f0c9edff76f38ebdf
blob + 53ad5e56278eb05533244d8f293225238b479ad0
--- graphics/ffmpeg/Makefile
+++ graphics/ffmpeg/Makefile
@@ -2,6 +2,7 @@ COMMENT=	audio/video converter and streamer
 
 # keep it synced with x11/mplayer
 V=		8.0.1
+REVISION=       1
 DISTNAME=	ffmpeg-${V}
 CATEGORIES=	graphics multimedia
 SITES=		https://ffmpeg.org/releases/
@@ -101,6 +102,15 @@ LIBavutil_EXTRALIBS=-L${X11BASE}/lib -lva -lva-drm -lv
 LIBswresample_EXTRALIBS=-lm
 LIBswscale_EXTRALIBS=-lm
 
+.include <bsd.port.arch.mk>
+
+.if ${PROPERTIES:Mlp64} || ${MACHINE_ARCH} == i386
+WANTLIB+=		SvtAv1Enc
+LIB_DEPENDS+=		multimedia/svt-av1
+LIBavcodec_EXTRALIBS+=	-lSvtAv1Enc
+CONFIGURE_ARGS+=	--enable-libsvtav1
+.endif
+
 .if ${MACHINE_ARCH} == i386
 LDLIBFLAGS+=	-Wl,-znotext
 .endif