diff --git a/multimedia/libx264/Makefile b/multimedia/libx264/Makefile
index 26e47c4246b1..1b696cbcda28 100644
--- a/multimedia/libx264/Makefile
+++ b/multimedia/libx264/Makefile
@@ -1,41 +1,55 @@
 #
 # Updating notes: see multimedia/x264/Makefile.
 
 PORTREVISION=	0
 PKGNAMEPREFIX=	lib
 
 COMMENT=	H.264/MPEG-4 AVC Video Encoding (Library)
 MASTERDIR=	${.CURDIR}/../x264
 
 # Clear dependency on libx264 (itself), see x264/Makefile
 LIB_DEPENDS=
 
 USE_LDCONFIG=	yes
 
 CFLAGS_riscv64=	-fPIC
 LDFLAGS_i386=	-Wl,-znotext
 LDFLAGS_armv6=	-Wl,-znotext
 LDFLAGS_armv7=	-Wl,-znotext
 
 # Don't import PLIST_FILES from multimedia/x264
 PLIST_FILES=
 PLIST_SUB+=	X264BUILD=${DISTVERSION:R:E}
 PLIST=		${.CURDIR}/pkg-plist
 
 MESON_ARGS=	-Dcli=false
 
 OPTIONS_DEFINE_aarch64=	ASM LTO OPTIMIZED_CFLAGS
 OPTIONS_DEFINE_amd64=	ASM LTO OPTIMIZED_CFLAGS
+OPTIONS_DEFINE_powerpc64=	ASM LTO OPTIMIZED_CFLAGS
+OPTIONS_DEFINE_powerpc64le=	ASM LTO OPTIMIZED_CFLAGS
 OPTIONS_DEFAULT_aarch64=ASM LTO OPTIMIZED_CFLAGS
 OPTIONS_DEFAULT_amd64=	ASM LTO OPTIMIZED_CFLAGS
+OPTIONS_DEFAULT_powerpc64le=	ASM LTO OPTIMIZED_CFLAGS
+# ASM needs VSX (x264 AltiVec kernels hard-require it); default on with CPUTYPE>=power7
+.if !empty(MACHINE_CPU:Mvsx)
+OPTIONS_DEFAULT_powerpc64=	ASM LTO OPTIMIZED_CFLAGS
+.else
+OPTIONS_DEFAULT_powerpc64=	LTO OPTIMIZED_CFLAGS
+.endif
 OPTIONS_EXCLUDE=	BASH FFMS GPAC LAVF LSMASH SWSCALE
 
 ASM_BUILD_DEPENDS=	${ASM_BUILD_DEPENDS_${ARCH}}
 ASM_BUILD_DEPENDS_amd64=nasm>=2.13:devel/nasm
 ASM_MESON_ENABLED=	asm
 
 LTO_MESON_TRUE=		b_lto
 
 OPTIMIZED_CFLAGS_CFLAGS=-O3
 
+.if !empty(MACHINE_ARCH:Mpowerpc64*)
+ASM_VARS=	MESON_ARGS+=-Dvsx=enabled
+ASM_VARS_OFF=	MESON_ARGS+=-Dvsx=disabled
+.endif
+
 .include "${MASTERDIR}/Makefile"
diff --git a/multimedia/x264/Makefile b/multimedia/x264/Makefile
index bfcaa6d32b64..1cd1e1c91140 100644
--- a/multimedia/x264/Makefile
+++ b/multimedia/x264/Makefile
@@ -1,80 +1,84 @@
 PORTNAME=	x264
 DISTVERSION=	0.165.3223
 CATEGORIES=	multimedia
 
 MAINTAINER=	multimedia@FreeBSD.org
 COMMENT?=	H.264/MPEG-4 AVC Video Encoding (CLI utility)
 WWW=		https://www.videolan.org/x264.html
 
 LICENSE=	GPLv2
 LICENSE_FILE=	${WRKSRC}/COPYING
 
 LIB_DEPENDS?=	libx264.so:multimedia/libx264
 
 USES+=		meson pkgconfig python:build shebangfix
 SHEBANG_GLOB=	*.py
 
 USE_GITLAB=	yes
 GL_SITE=	https://gitlab.freedesktop.org/gstreamer
 GL_ACCOUNT=	meson-ports
 GL_PROJECT=	x264
 GL_TAGNAME=	00852f599572d10798b2dafd2c5286213d0ce795
 
 PLIST_FILES?=	bin/x264
 
 OPTIONS_DEFINE+=	BASH FFMS LAVF SWSCALE
 OPTIONS_DEFAULT+=	BASH FFMS LAVF LSMASH SWSCALE
 OPTIONS_RADIO=		MP4
 #OPTIONS_RADIO_MP4=	GPAC LSMASH
 OPTIONS_RADIO_MP4=	LSMASH
 
 FFMS_DESC=		FFmpeg Source input support
 #GPAC_DESC=		GPAC library support
 LAVF_DESC=		libav* format input support (requires FFmpeg)
 LSMASH_DESC=		L-SMASH library support
 MP4_DESC=		MPEG-4 output
 SWSCALE_DESC=		Resize video filter
 
 BASH_BUILD_DEPENDS=	bash-completion>0:shells/bash-completion
 BASH_RUN_DEPENDS=	bash-completion>0:shells/bash-completion
 BASH_PLIST_FILES=	share/bash-completion/completions/x264
 
 FFMS_LIB_DEPENDS=	libffms2.so:multimedia/ffms2
 FFMS_MESON_ENABLED=	ffms
 FFMS_IMPLIES=		SWSCALE
 
 #GPAC_LIB_DEPENDS=	libgpac.so:multimedia/gpac
 #GPAC_USES=		localbase:ldflags
 #GPAC_MESON_ENABLED=	gpac
 
 LAVF_LIB_DEPENDS=	libavformat.so:multimedia/ffmpeg
 LAVF_MESON_ENABLED=	lavf
 LAVF_IMPLIES=		SWSCALE
 
 LSMASH_LIB_DEPENDS=	liblsmash.so:multimedia/l-smash
 LSMASH_MESON_ENABLED=	lsmash
 
 SWSCALE_LIB_DEPENDS=	libswscale.so:multimedia/ffmpeg
 SWSCALE_MESON_ENABLED=	swscale
 
 .include <bsd.port.options.mk>
 
-.if !defined(PKGNAMEPREFIX) || (${ARCH} != "aarch64" && ${ARCH} != "amd64")
+.if !defined(PKGNAMEPREFIX) || (${ARCH} != "aarch64" && ${ARCH} != "amd64" && empty(ARCH:Mpowerpc64*))
 MESON_ARGS+=   -Dasm=disabled -Dvsx=disabled
 .endif
 
+.if defined(PKGNAMEPREFIX) && ${ARCH} == "powerpc64" && ${PORT_OPTIONS:MASM} && empty(MACHINE_CPU:Mvsx)
+IGNORE=	ASM requires VSX on powerpc64; set CPUTYPE=power7 or newer, or disable the ASM option
+.endif
+
 post-patch:
 	@${REINPLACE_CMD} -e 's|%%DISTVERSION%%|${DISTVERSION}|g' \
 	    ${PATCH_WRKSRC}/meson.build
 	@${REINPLACE_CMD} -e 's|%%GIT_COMMIT_HASH%%|${GL_TAGNAME}|g' \
 	    ${PATCH_WRKSRC}/meson.build
 
 .if !defined(PKGNAMEPREFIX)
 do-install:
 	${INSTALL_PROGRAM} ${WRKSRC}/${MESON_BUILD_DIR}/${PORTNAME} ${STAGEDIR}${PREFIX}/bin
 .endif
 
 do-install-BASH-on:
 	${INSTALL_SCRIPT} ${WRKSRC}/tools/bash-autocomplete.sh ${STAGEDIR}${PREFIX}/share/bash-completion/completions/x264
 
 .include <bsd.port.mk>
diff --git a/multimedia/x264/files/patch-meson.build b/multimedia/x264/files/patch-meson.build
index 8f4895e42207..3a4445583ffb 100644
--- a/multimedia/x264/files/patch-meson.build
+++ b/multimedia/x264/files/patch-meson.build
@@ -1,19 +1,55 @@
---- meson.build.orig	2026-08-04 22:20:30 UTC
+--- meson.build.orig	2026-08-06 13:57:36 UTC
 +++ meson.build
-@@ -1,13 +1,13 @@ project('x264', 'c',
+@@ -1,13 +1,13 @@
  project('x264', 'c',
 -  version: run_command(find_program('version.py'), '--package-version', check: true).stdout().strip(),
 -  default_options: ['optimization=2', 'c_std=c11'],
 +  version: '%%DISTVERSION%%',
 +  default_options: ['c_std=c11'],
    meson_version: '>= 1.6.0'
  )
  
  x264_ver = meson.project_version()
  x264_rev = meson.project_version().split('.')[2]
  x264_build = meson.project_version().split('.')[1]
 -x264_commit = run_command(find_program('version.py'), '--commit-hash', check: true).stdout().strip()
 +x264_commit = '%%GIT_COMMIT_HASH%%'
  
  message('build: ' + x264_build)
  message('commit: ' + x264_commit)
+@@ -218,20 +218,20 @@
+     asflags += ['-DARCH_X86_64=1']
+     stack_alignment = 16
+   endif
+-elif host_cpu.startswith('ppc')
+-  cdata.set10('altivec', true)
++elif host_cpu.startswith('ppc') and asm_allowed
++  cdata.set10('HAVE_ALTIVEC', true)
+ 
+   if host_system == 'darwin'
+     add_project_arguments('-faltivec', '-fastf', '-mcpu=G4', language: 'c')
+   else
+-    add_project_arguments('-maltivec', '-mabi=altivec', language: 'c')
+-    cdata.set10('altivec_h', true)
++    add_project_arguments('-maltivec', language: 'c')
++    cdata.set10('HAVE_ALTIVEC_H', true)
+   endif
+ 
+   if not get_option('vsx').disabled()
+-    if cc.has_argument('-mvsx')
++    if cc.compiles('int main(void){return 0;}', args: ['-maltivec', '-mvsx'], name: 'VSX with AltiVec')
+       add_project_arguments('-mvsx', language: 'c')
+-      cdata.set10('vsx', true)
++      cdata.set10('HAVE_VSX', true)
+     endif
+   endif
+ elif host_cpu == 'aarch64'
+@@ -955,7 +955,7 @@
+   elif host_cpu.startswith('ppc')
+     sources_x += files(
+       'common/ppc/dct.c',
+-      'common/ppc/debloc4k.c',
++      'common/ppc/deblock.c',
+       'common/ppc/mc.c',
+       'common/ppc/pixel.c',
+       'common/ppc/predict.c',