diff --git a/.github/workflows/ci-windows-installed.yml b/.github/workflows/ci-windows-installed.yml
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+# This is a copy of ci-windows.yml for installed dependencies. It differs in the following ways:
+#
+#   * vcpkg is used to install dependencies that are packaged.
+#   * rav1e is installed from a binary upstream.
+#   * TODO: use proper installations of libgav1, libsharpyuv and SVT once released.
+
+name: CI Windows Installed
+on:
+  push:
+    branches:
+      - main
+
+permissions:
+  contents: read
+
+# Cancel the workflow if a new one is triggered from the same PR, branch, or tag, except on main.
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.ref != 'refs/heads/main' }}
+
+jobs:
+  build-windows-installed:
+    runs-on: windows-latest
+    strategy:
+      fail-fast: false
+
+    steps:
+    - uses: actions/checkout@9bb56186c3b09b4f86b1c65136769dd318469633 # v4.1.2
+    - name: Setup Visual Studio shell
+      uses: egor-tensin/vs-shell@9a932a62d05192eae18ca370155cf877eecc2202 # v2.1
+    - name: Print CMake version
+      run: cmake --version
+    - uses: seanmiddleditch/gha-setup-ninja@8b297075da4cd2a5f1fd21fe011b499edf06e9d2 # v4
+    - name: Print ImageMagick version
+      run: magick --version
+    - name: vcpkg build
+      uses: johnwason/vcpkg-action@v6
+      id: vcpkg
+      with:
+        pkgs: aom dav1d libjpeg-turbo libpng libxml2 libyuv zlib
+        triplet: x64-windows-release
+        token: ${{ github.token }}
+        github-binarycache: true
+        cache-key: ${{ hashFiles('cmake/Modules/*', 'ext/*.cmd', 'ext/*.sh') }}
+    - name: Install rav1e
+      run: |
+        $LINK = "https://github.com/xiph/rav1e/releases/download/v0.7.1"
+        $FILE = "rav1e-0.7.1-windows-msvc-generic"
+        curl -LO "$LINK/$FILE.zip"
+        mkdir -p ${{ github.workspace }}\tmp
+        7z x -y "$FILE.zip" -o"${{ github.workspace }}\tmp"
+        # Do not mv the folder's content to not overwrite, and rsync is not installed.
+        mv ${{ github.workspace }}\tmp\rav1e-windows-msvc-sdk\bin\* ${{ github.workspace }}\vcpkg\installed\x64-windows-release\bin
+        mv ${{ github.workspace }}\tmp\rav1e-windows-msvc-sdk\include\* ${{ github.workspace }}\vcpkg\installed\x64-windows-release\include
+        mv ${{ github.workspace }}\tmp\rav1e-windows-msvc-sdk\lib\rav1e* ${{ github.workspace }}\vcpkg\installed\x64-windows-release\lib
+        mv ${{ github.workspace }}\tmp\rav1e-windows-msvc-sdk\lib\pkgconfig\* ${{ github.workspace }}\vcpkg\installed\x64-windows-release\lib\pkgconfig
+    - name: Prepare libavif (cmake)
+      run: >
+        cmake ${{ steps.vcpkg.outputs.vcpkg-cmake-config }} -G Ninja -S ./ -B build
+        -DCMAKE_BUILD_TYPE=Release -DBUILD_SHARED_LIBS=OFF
+        -DAVIF_CODEC_AOM=SYSTEM -DAVIF_CODEC_DAV1D=SYSTEM
+        -DAVIF_CODEC_RAV1E=SYSTEM
+        -DAVIF_JPEG=SYSTEM -DAVIF_LIBXML2=SYSTEM
+        -DAVIF_LIBYUV=SYSTEM -DAVIF_ZLIBPNG=SYSTEM
+        -DAVIF_BUILD_EXAMPLES=ON -DAVIF_BUILD_APPS=ON
+        -DAVIF_BUILD_TESTS=ON -DAVIF_ENABLE_GTEST=ON -DAVIF_GTEST=LOCAL
+        -DAVIF_ENABLE_EXPERIMENTAL_YCGCO_R=ON
+        -DAVIF_ENABLE_EXPERIMENTAL_GAIN_MAP=ON
+        -DAVIF_ENABLE_EXPERIMENTAL_AVIR=ON
+        -DAVIF_ENABLE_EXPERIMENTAL_SAMPLE_TRANSFORM=ON
+        -DAVIF_ENABLE_WERROR=ON
+    - name: Build libavif (ninja)
+      working-directory: ./build
+      run: ninja
+    - name: Run AVIF Tests
+      working-directory: ./build
+      run: ctest -j $Env:NUMBER_OF_PROCESSORS --output-on-failure