Just set URL

.github/workflows/build.yml

@@ -183,14 +183,7 @@ jobs:
 
   Windows_ffmpeg:
     runs-on: windows-2022
-    strategy:
-      matrix:
-        include:
-          - ffmpeg_version: latest
-            ffmpeg_download_url: https://www.gyan.dev/ffmpeg/builds/packages/ffmpeg-7.1.1-full_build-shared.7z
-      fail-fast: false
-    env:
-      FFMPEG_DOWNLOAD_URL: ${{ matrix.ffmpeg_download_url }}
+
     steps:
     - name: Checkout
       uses: actions/checkout@v2
@@ -199,7 +192,7 @@ jobs:
       run: |
         $VCINSTALLDIR = $(& "${env:ProgramFiles(x86)}\Microsoft Visual Studio\Installer\vswhere.exe" -latest -property installationPath)
         Add-Content $env:GITHUB_ENV "LIBCLANG_PATH=${VCINSTALLDIR}\VC\Tools\LLVM\x64\bin`n"
-        Invoke-WebRequest "${env:FFMPEG_DOWNLOAD_URL}" -OutFile ffmpeg-shared.7z
+        Invoke-WebRequest "https://www.gyan.dev/ffmpeg/builds/packages/ffmpeg-7.1.1-full_build-shared.7z" -OutFile ffmpeg-shared.7z
         7z x ffmpeg-shared.7z
         mkdir deps
         mv ffmpeg-*/* deps/