Bump FFmpeg to 8.1.2 on 5.x to fix CVE-2026-8461

Mirrors #1249 (merged on 4.x). Bumps the manylinux and musllinux
Dockerfiles from FFmpeg 8.1.1 to 8.1.2 and points the manylinux
DOCKER_IMAGE tags at the :20260725 images that ship 8.1.2, matching
the current 4.x branch. The i686 build is on a separate older 5.1.x
line and is left unchanged.

Author: MDSALMANSHAMS

.github/workflows/build_wheels_manylinux.yml

@@ -33,16 +33,16 @@ jobs:
         include:
           - platform: aarch64
             manylinux: 2014
-            DOCKER_IMAGE: quay.io/opencv-ci/opencv-python-manylinux2014-aarch64:20260531
+            DOCKER_IMAGE: quay.io/opencv-ci/opencv-python-manylinux2014-aarch64:20260725
           - platform: x86_64
             manylinux: 2014
-            DOCKER_IMAGE: quay.io/opencv-ci/opencv-python-manylinux2014-x86-64:20260531
+            DOCKER_IMAGE: quay.io/opencv-ci/opencv-python-manylinux2014-x86-64:20260725
           - platform: x86_64
             manylinux: 2_28
-            DOCKER_IMAGE: quay.io/opencv-ci/opencv-python-manylinux_2_28-x86-64:20260531
+            DOCKER_IMAGE: quay.io/opencv-ci/opencv-python-manylinux_2_28-x86-64:20260725
           - platform: aarch64
             manylinux: 2_28
-            DOCKER_IMAGE: quay.io/opencv-ci/opencv-python-manylinux_2_28-aarch64:20260531
+            DOCKER_IMAGE: quay.io/opencv-ci/opencv-python-manylinux_2_28-aarch64:20260725
 
     env:
       ACTIONS_ALLOW_UNSECURE_COMMANDS: true

docker/manylinux2014/Dockerfile_aarch64

@@ -1,10 +1,10 @@
-# Version: 20260531
+# Version: 20260723
 # Image name: quay.io/opencv-ci/opencv-python-manylinux2014-aarch64
 
 FROM quay.io/pypa/manylinux2014_aarch64:latest
 
 ARG CCACHE_VERSION=4.13.6
-ARG FFMPEG_VERSION=8.1.1
+ARG FFMPEG_VERSION=8.1.2
 ARG FREETYPE_VERSION=2.14.3
 ARG LIBPNG_VERSION=1.6.58
 ARG VPX_VERSION=v1.15.2

docker/manylinux2014/Dockerfile_x86_64

@@ -1,10 +1,10 @@
-# Version: 20260531
+# Version: 20260723
 # Image name: quay.io/opencv-ci/opencv-python-manylinux2014-x86-64
 
 FROM quay.io/pypa/manylinux2014_x86_64:latest
 
 ARG CCACHE_VERSION=4.13.6
-ARG FFMPEG_VERSION=8.1.1
+ARG FFMPEG_VERSION=8.1.2
 ARG FREETYPE_VERSION=2.14.3
 ARG LIBPNG_VERSION=1.6.58
 ARG VPX_VERSION=v1.15.2

docker/manylinux_2_28/Dockerfile_aarch64

@@ -1,9 +1,9 @@
-# Version: 20260531
+# Version: 20260723
 # Image name: quay.io/opencv-ci/opencv-python-manylinux_2_28-aarch64
 
 FROM quay.io/pypa/manylinux_2_28_aarch64:latest
 
-ARG FFMPEG_VERSION=8.1.1
+ARG FFMPEG_VERSION=8.1.2
 ARG FREETYPE_VERSION=2.14.3
 ARG LIBPNG_VERSION=1.6.58
 ARG VPX_VERSION=v1.15.2

docker/manylinux_2_28/Dockerfile_x86_64

@@ -1,9 +1,9 @@
-# Version: 20260531
+# Version: 20260723
 # Image name: quay.io/opencv-ci/opencv-python-manylinux_2_28-x86-64
 
 FROM quay.io/pypa/manylinux_2_28_x86_64:latest
 
-ARG FFMPEG_VERSION=8.1.1
+ARG FFMPEG_VERSION=8.1.2
 ARG FREETYPE_VERSION=2.14.3
 ARG LIBPNG_VERSION=1.6.58
 ARG VPX_VERSION=v1.15.2

docker/musllinux_1_2/Dockerfile_aarch64

@@ -1,9 +1,9 @@
-# version: 20260531
+# version: 20260723
 # Image name: quay.io/opencv-ci/opencv-python-musllinux_1_2-aarch64
 FROM quay.io/pypa/musllinux_1_2_aarch64:latest
 
 ARG CCACHE_VERSION=4.13.6
-ARG FFMPEG_VERSION=8.1.1
+ARG FFMPEG_VERSION=8.1.2
 ARG FREETYPE_VERSION=2.14.3
 ARG LIBPNG_VERSION=1.6.58
 ARG VPX_VERSION=v1.15.1

docker/musllinux_1_2/Dockerfile_x86_64

@@ -1,9 +1,9 @@
-# version: 20260531
+# version: 20260723
 # Image name: quay.io/opencv-ci/opencv-python-musllinux_1_2-x86-64
 FROM quay.io/pypa/musllinux_1_2_x86_64:latest
 
 ARG CCACHE_VERSION=4.13.6
-ARG FFMPEG_VERSION=8.1.1
+ARG FFMPEG_VERSION=8.1.2
 ARG FREETYPE_VERSION=2.14.3
 ARG LIBPNG_VERSION=1.6.58
 ARG VPX_VERSION=v1.15.1