diff --git a/3rdparty/FFmpeg/ffmpeg-rebuild.sh b/3rdparty/FFmpeg/ffmpeg-rebuild.sh
index b6618e55..54287761 100755
--- a/3rdparty/FFmpeg/ffmpeg-rebuild.sh
+++ b/3rdparty/FFmpeg/ffmpeg-rebuild.sh
@@ -158,6 +158,9 @@ configArguments="\
  --disable-doc \
  --enable-runtime-cpudetect"
 
+# enable AV1 decoder
+configArguments="$configArguments --enable-libdav1d"
+
 if [ "$aSystem" == "Darwin" ]; then
   export MACOSX_DEPLOYMENT_TARGET=10.10
   anExtraCFlags="$anExtraCFlags -mmacosx-version-min=10.10"
diff --git a/3rdparty/FFmpeg/sview_dav1d_build_mingw.sh b/3rdparty/FFmpeg/sview_dav1d_build_mingw.sh
new file mode 100755
index 00000000..3a8bd879
--- /dev/null
+++ b/3rdparty/FFmpeg/sview_dav1d_build_mingw.sh
@@ -0,0 +1,28 @@
+#!/bin/bash
+
+# Small help to build dav1d for MinGW [for sView project]
+# https://code.videolan.org/videolan/dav1d
+
+# go to the script directory
+aScriptPath=${BASH_SOURCE%/*}; if [ -d "${aScriptPath}" ]; then cd "$aScriptPath"; fi; aScriptPath="$PWD";
+aSrcRoot=$aScriptPath
+
+buildProject () {
+  aPrefix=$1
+  aBuildRoot="$aSrcRoot/build"
+  aBuildPath="$aBuildRoot/dav1d-${aPrefix}-make"
+  aDistPath="$aBuildRoot/dav1d-${aPrefix}"
+  rm -f -r "$aBuildPath"
+  rm -f -r "$aDistPath"
+  rm -f -r "$aBuildRoot/dav1d-${aPrefix}.7z"
+
+  meson setup "${aBuildPath}" --cross-file=package/crossfiles/${aPrefix}.meson --default-library=static --prefix=$aDistPath
+  pushd "${aBuildPath}"
+  ninja
+  ninja install
+  popd
+}
+
+set -o pipefail
+buildProject "i686-w64-mingw32"
+buildProject "x86_64-w64-mingw32"
diff --git a/3rdparty/FFmpeg/sview_openjpeg_build_mingw.sh b/3rdparty/FFmpeg/sview_openjpeg_build_mingw.sh
new file mode 100755
index 00000000..74640f1f
--- /dev/null
+++ b/3rdparty/FFmpeg/sview_openjpeg_build_mingw.sh
@@ -0,0 +1,36 @@
+#!/bin/bash
+
+# Small help to build libopenjpeg for MinGW [for sView project]
+# https://www.openjpeg.org/
+
+# go to the script directory
+aScriptPath=${BASH_SOURCE%/*}; if [ -d "${aScriptPath}" ]; then cd "$aScriptPath"; fi; aScriptPath="$PWD";
+aSrcRoot=$aScriptPath
+
+buildProject () {
+  aPrefix=$1
+  aBuildRoot="$aSrcRoot/build"
+  aBuildPath="$aBuildRoot/openjpeg-${aPrefix}-make"
+  aDistPath="$aBuildRoot/openjpeg-${aPrefix}"
+  rm -f -r "$aBuildPath"
+  rm -f -r "$aDistPath"
+  rm -f -r "$aBuildRoot/openjpeg-${aPrefix}.7z"
+  cmake -G "Ninja" \
+   -D CMAKE_TOOLCHAIN_FILE="~/develop/${aPrefix}.cmake" \
+   -D CMAKE_BUILD_TYPE:STRING="Release" \
+   -D CMAKE_INSTALL_PREFIX:PATH="$aDistPath" \
+   -D BUILD_SHARED_LIBS:BOOL="OFF" \
+   -B "$aBuildPath" -S "$aSrcRoot"
+
+  cmake --build "$aBuildPath" --config Release --target clean
+  cmake --build "$aBuildPath" --config Release
+  cmake --build "$aBuildPath" --config Release --target install
+  
+  cp -f "$aSrcRoot/LICENSE"   "$aDistPath"
+  cp -f "$aSrcRoot/README.md" "$aDistPath"
+  7za a -t7z -m0=lzma -mx=9 -mfb=64 -md=32m -ms=on "$aBuildRoot/openjpeg-${aPrefix}.7z" "$aDistPath"
+}
+
+set -o pipefail
+buildProject "i686-w64-mingw32"
+buildProject "x86_64-w64-mingw32"