diff --git a/.github/workflows/build_wheels_linux.yml b/.github/workflows/build_wheels_linux.yml
index bd42944c..98ad3dc8 100644
--- a/.github/workflows/build_wheels_linux.yml
+++ b/.github/workflows/build_wheels_linux.yml
@@ -4,6 +4,7 @@ on:
   pull_request:
     branches:
       - master
+      - 3.4
     paths-ignore:
       - '.github/workflows/build_wheels_linux_arm.yml'
       - '.github/workflows/build_wheels_windows*'
@@ -14,21 +15,18 @@ on:
 
 jobs:
   build:
-    runs-on: ${{ matrix.os }}
+    runs-on: ubuntu-20.04
     defaults:
       run:
         shell: bash
-
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest]
         python-version: ['3.6']
         platform: [x64]
         with_contrib: [0, 1]
         without_gui: [0, 1]
         build_sdist: [0]
-
     env:
       ACTIONS_ALLOW_UNSECURE_COMMANDS: true
       REPO_DIR: .
@@ -39,34 +37,32 @@ jobs:
       MB_ML_VER: 2014
       TRAVIS_BUILD_DIR: ${{ github.workspace }}
       CONFIG_PATH: travis_config.sh
-      DOCKER_IMAGE: quay.io/asenyaev/manylinux2014_${PLAT}
-      USE_CCACHE: 1
+      DOCKER_IMAGE: quay.io/opencv-ci/opencv-python-manylinux2014-x86-64:20220628
+      USE_CCACHE: 0
       UNICODE_WIDTH: 32
       PLAT: x86_64
       SDIST: ${{ matrix.build_sdist || 0 }}
       ENABLE_HEADLESS: ${{ matrix.without_gui }}
       ENABLE_CONTRIB: ${{ matrix.with_contrib }}
-
     steps:
+    - name: Cleanup
+      run: find . -mindepth 1 -delete
+      working-directory: ${{ github.workspace }}
     - name: Checkout
       uses: actions/checkout@v2
       with:
         submodules: false
         fetch-depth: 0
-
     - name: Update submodules
       if: github.event_name == 'pull_request'
       run: git submodule update --remote
-
     - name: Build a package
       run: source scripts/build.sh
-
     - name: Saving all wheels
       uses: actions/upload-artifact@v2
       with:
         name: wheels
         path: wheelhouse/opencv*.whl
-
     - name: Saving a wheel accordingly to matrix
       uses: actions/upload-artifact@v2
       with:
@@ -75,21 +71,18 @@ jobs:
 
   test:
     needs: [build]
-    runs-on: ${{ matrix.os }}
+    runs-on: ubuntu-20.04
     defaults:
       run:
         shell: bash
-
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest]
         python-version: ['3.6', '3.7', '3.8', '3.9', '3.10']
         platform: [x64]
         with_contrib: [0, 1]
         without_gui: [0, 1]
         build_sdist: [0]
-
     env:
       ACTIONS_ALLOW_UNSECURE_COMMANDS: true
       MB_PYTHON_VERSION: ${{ matrix.python-version }}
@@ -97,42 +90,38 @@ jobs:
       NP_TEST_DEP_LATEST: numpy==1.21.2
       CONFIG_PATH: travis_config.sh
       PLAT: x86_64
-
     steps:
+    - name: Cleanup
+      run: find . -mindepth 1 -delete
+      working-directory: ${{ github.workspace }}
     - name: Checkout
       uses: actions/checkout@v2
       with:
-        submodules: false
+        submodules: true
         fetch-depth: 0
-
     - name: Setup Environment variables
       run: if [ "3.10" == "${{ matrix.python-version }}" ]; then echo "TEST_DEPENDS=$(echo $NP_TEST_DEP_LATEST)" >> $GITHUB_ENV; else echo "TEST_DEPENDS=$(echo $NP_TEST_DEP)" >> $GITHUB_ENV; fi
-
     - name: Download a wheel accordingly to matrix
       uses: actions/download-artifact@v2
       with:
         name: wheel-${{ matrix.with_contrib }}-${{ matrix.without_gui }}-${{ matrix.build_sdist }}
         path: wheelhouse/
-
     - name: Package installation and run tests
       run: source scripts/install.sh
 
   build_sdist:
-    runs-on: ${{ matrix.os }}
+    runs-on: ubuntu-20.04
     defaults:
       run:
         shell: bash
-
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest]
         python-version: [3.8]
         platform: [x64]
         with_contrib: [0, 1]
         without_gui: [0, 1]
         build_sdist: [1]
-
     env:
       ACTIONS_ALLOW_UNSECURE_COMMANDS: true
       REPO_DIR: .
@@ -145,30 +134,29 @@ jobs:
       NP_TEST_DEP: numpy==1.19.4
       TRAVIS_BUILD_DIR: ${{ github.workspace }}
       CONFIG_PATH: travis_config.sh
-      DOCKER_IMAGE: quay.io/asenyaev/manylinux2014_${PLAT}
+      DOCKER_IMAGE: quay.io/opencv-ci/opencv-python-manylinux2014-x86-64:20220628
       USE_CCACHE: 1
       UNICODE_WIDTH: 32
       SDIST: ${{ matrix.build_sdist || 0 }}
       ENABLE_HEADLESS: ${{ matrix.without_gui || 0 }}
       ENABLE_CONTRIB: ${{ matrix.with_contrib || 0 }}
-
     steps:
+    - name: Cleanup
+      run: find . -mindepth 1 -delete
+      working-directory: ${{ github.workspace }}
     - name: Checkout
       uses: actions/checkout@v2
       with:
         submodules: false
         fetch-depth: 0
-
     - name: Update submodules
       if: github.event_name == 'pull_request'
       run: git submodule update --remote
-
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v2
       with:
         python-version: ${{ matrix.python-version }}
         architecture: ${{ matrix.platform }}
-
     - name: Build a package
       run: |
         set -e
@@ -176,12 +164,11 @@ jobs:
         set -x
           python -m pip install --upgrade pip
           python -m pip install scikit-build
-          python setup.py sdist
+          python setup.py sdist --formats=gztar
         set +x
         # Install and run tests
         set -x
         echo "skipping tests because of sdist"
-
     - name: saving artifacts
       uses: actions/upload-artifact@v2
       with:
@@ -191,7 +178,7 @@ jobs:
   test_release_opencv_python:
     if: github.event_name == 'release' && github.event.release.prerelease
     needs: [build, build_sdist, test]
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     environment: test-opencv-python-release
     defaults:
       run:
@@ -201,7 +188,6 @@ jobs:
         with:
           name: wheels
           path: wheelhouse/
-
       - name: Upload all wheels
         run: |
           python -m pip install twine
@@ -210,7 +196,7 @@ jobs:
   release_opencv_python:
     if: github.event_name == 'release' && !github.event.release.prerelease
     needs: [build, build_sdist, test]
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     environment: opencv-python-release
     defaults:
       run:
@@ -220,22 +206,18 @@ jobs:
         with:
           name: wheels
           path: wheelhouse/
-
       - name: Upload wheels for opencv_python
         run: |
           python -m pip install twine
           python -m twine upload -u ${{ secrets.OPENCV_PYTHON_USERNAME }} -p ${{ secrets.OPENCV_PYTHON_PASSWORD }} --skip-existing wheelhouse/opencv_python-* wheelhouse/opencv-python-[^h]*
-
       - name: Upload wheels for opencv_contrib_python
         run: |
           python -m pip install twine
           python -m twine upload -u ${{ secrets.OPENCV_CONTRIB_PYTHON_USERNAME }} -p ${{ secrets.OPENCV_CONTRIB_PYTHON_PASSWORD }} --skip-existing wheelhouse/opencv_contrib_python-* wheelhouse/opencv-contrib-python-[^h]*
-
       - name: Upload wheels for opencv_python_headless
         run: |
           python -m pip install twine
           python -m twine upload -u ${{ secrets.OPENCV_PYTHON_HEADLESS_USERNAME }} -p ${{ secrets.OPENCV_PYTHON_HEADLESS_PASSWORD }} --skip-existing wheelhouse/opencv_python_headless-* wheelhouse/opencv-python-headless-*
-
       - name: Upload wheels for opencv_contrib_python_headless
         run: |
           python -m pip install twine
diff --git a/.github/workflows/build_wheels_linux_arm.yml b/.github/workflows/build_wheels_linux_arm.yml
index a97bbc29..4d0c3daf 100644
--- a/.github/workflows/build_wheels_linux_arm.yml
+++ b/.github/workflows/build_wheels_linux_arm.yml
@@ -4,6 +4,7 @@ on:
   pull_request:
     branches:
       - master
+      - 3.4
     paths-ignore:
       - '.github/workflows/build_wheels_linux.yml'
       - '.github/workflows/build_wheels_windows*'
@@ -14,21 +15,18 @@ on:
 
 jobs:
   build_arm:
-    runs-on: ${{ matrix.os }}
+    runs-on: opencv-cn-lin-arm64
     defaults:
       run:
         shell: bash
-
     strategy:
       fail-fast: false
       matrix:
-        os: [ARM64]
         python-version: ['3.6']
         platform: [x64]
         with_contrib: [0, 1]
         without_gui: [0, 1]
         build_sdist: [0]
-
     env:
       ACTIONS_ALLOW_UNSECURE_COMMANDS: true
       REPO_DIR: .
@@ -40,33 +38,30 @@ jobs:
       MB_ML_VER: 2014
       TRAVIS_BUILD_DIR: ${{ github.workspace }}
       CONFIG_PATH: travis_config.sh
-      DOCKER_IMAGE: quay.io/asenyaev/manylinux2014_${PLAT}
+      DOCKER_IMAGE: quay.io/opencv-ci/opencv-python-manylinux2014-aarch64:20220628
       USE_CCACHE: 0
       UNICODE_WIDTH: 32
       SDIST: ${{ matrix.build_sdist || 0 }}
       ENABLE_HEADLESS: ${{ matrix.without_gui }}
       ENABLE_CONTRIB: ${{ matrix.with_contrib }}
-
     steps:
+    - name: UID
+      run: id -u
     - name: Cleanup
-      if: always()
-      uses: AutoModality/action-clean@v1
-
+      run: find . -mindepth 1 -delete
+      working-directory: ${{ github.workspace }}
     - name: Checkout
       uses: actions/checkout@v2
       with:
         submodules: false
         fetch-depth: 0
-
     - name: Build a package
       run: source scripts/build.sh
-
     - name: Saving all wheels
       uses: actions/upload-artifact@v2
       with:
         name: wheels
         path: wheelhouse/opencv*.whl
-
     - name: Saving a wheel accordingly to matrix
       uses: actions/upload-artifact@v2
       with:
@@ -75,21 +70,18 @@ jobs:
 
   test:
     needs: [build_arm]
-    runs-on: ${{ matrix.os }}
+    runs-on: opencv-cn-lin-arm64
     defaults:
       run:
         shell: bash
-
     strategy:
       fail-fast: false
       matrix:
-        os: [ARM64]
         python-version: ['3.6', '3.7', '3.8', '3.9', '3.10']
         platform: [x64]
         with_contrib: [0, 1]
         without_gui: [0, 1]
         build_sdist: [0]
-
     env:
       ACTIONS_ALLOW_UNSECURE_COMMANDS: true
       MB_PYTHON_VERSION: ${{ matrix.python-version }}
@@ -99,34 +91,29 @@ jobs:
       CONFIG_PATH: travis_config.sh
       DOCKER_TEST_IMAGE: multibuild/focal_arm64v8
       UNICODE_WIDTH: 32
-
     steps:
     - name: Cleanup
-      if: always()
-      uses: AutoModality/action-clean@v1
-
+      run: find . -mindepth 1 -delete
+      working-directory: ${{ github.workspace }}
     - name: Checkout
       uses: actions/checkout@v2
       with:
         submodules: true
         fetch-depth: 0
-
     - name: Setup Environment variables
       run: if [ "3.10" == "${{ matrix.python-version }}" ]; then echo "TEST_DEPENDS=$(echo $NP_TEST_DEP_LATEST)" >> $GITHUB_ENV; else echo "TEST_DEPENDS=$(echo $NP_TEST_DEP)" >> $GITHUB_ENV; fi
-
     - name: Download a wheel accordingly to matrix
       uses: actions/download-artifact@v2
       with:
         name: wheel-${{ matrix.with_contrib }}-${{ matrix.without_gui }}-${{ matrix.build_sdist }}
         path: wheelhouse/
-
     - name: Package installation and run tests
       run: source scripts/install.sh
 
   test_release_opencv_python:
     if: github.event_name == 'release' && github.event.release.prerelease
     needs: [build_arm, test]
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     environment: test-opencv-python-release
     defaults:
       run:
@@ -136,7 +123,6 @@ jobs:
         with:
           name: wheels
           path: wheelhouse/
-
       - name: Upload all wheels
         run: |
           python -m pip install twine
@@ -145,7 +131,7 @@ jobs:
   release_opencv_python:
     if: github.event_name == 'release' && !github.event.release.prerelease
     needs: [build_arm, test]
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     environment: opencv-python-release
     defaults:
       run:
@@ -155,22 +141,18 @@ jobs:
         with:
           name: wheels
           path: wheelhouse/
-
       - name: Upload wheels for opencv_python
         run: |
           python -m pip install twine
           python -m twine upload -u ${{ secrets.OPENCV_PYTHON_USERNAME }} -p ${{ secrets.OPENCV_PYTHON_PASSWORD }} --skip-existing wheelhouse/opencv_python-*
-
       - name: Upload wheels for opencv_contrib_python
         run: |
           python -m pip install twine
           python -m twine upload -u ${{ secrets.OPENCV_CONTRIB_PYTHON_USERNAME }} -p ${{ secrets.OPENCV_CONTRIB_PYTHON_PASSWORD }} --skip-existing wheelhouse/opencv_contrib_python-*
-
       - name: Upload wheels for opencv_python_headless
         run: |
           python -m pip install twine
           python -m twine upload -u ${{ secrets.OPENCV_PYTHON_HEADLESS_USERNAME }} -p ${{ secrets.OPENCV_PYTHON_HEADLESS_PASSWORD }} --skip-existing wheelhouse/opencv_python_headless-*
-
       - name: Upload wheels for opencv_contrib_python_headless
         run: |
           python -m pip install twine
diff --git a/.github/workflows/build_wheels_macos.yml b/.github/workflows/build_wheels_macos.yml
index 87fe6f99..af892101 100644
--- a/.github/workflows/build_wheels_macos.yml
+++ b/.github/workflows/build_wheels_macos.yml
@@ -4,6 +4,7 @@ on:
   pull_request:
     branches:
       - master
+      - 3.4
     paths-ignore:
       - '.github/workflows/build_wheels_linux*'
       - '.github/workflows/build_wheels_windows*'
@@ -18,7 +19,6 @@ jobs:
     defaults:
       run:
         shell: bash
-
     strategy:
       fail-fast: false
       matrix:
@@ -39,7 +39,6 @@ jobs:
             python-version: '3.8'
           - os: macos-11
             python-version: '3.9'
-
     env:
       ACTIONS_ALLOW_UNSECURE_COMMANDS: true
       REPO_DIR: .
@@ -55,21 +54,22 @@ jobs:
       USE_CCACHE: 1
       UNICODE_WIDTH: 32
       PLAT: x86_64
+      FFMPEG_FORMULA_VERSION: '@4'
       SDIST: ${{ matrix.build_sdist || 0 }}
       ENABLE_HEADLESS: ${{ matrix.without_gui }}
       ENABLE_CONTRIB: ${{ matrix.with_contrib }}
-
     steps:
+    - name: Cleanup
+      run: find . -mindepth 1 -delete
+      working-directory: ${{ github.workspace }}
     - name: Checkout
       uses: actions/checkout@v2
       with:
         submodules: false
         fetch-depth: 0
-
     - name: Update submodules
       if: github.event_name == 'pull_request'
       run: git submodule update --remote
-
     - name: Build a package
       run: |
         set -e
@@ -87,13 +87,11 @@ jobs:
         echo $ENABLE_HEADLESS > headless.enabled
         set -x
         build_wheel $REPO_DIR $PLAT
-
     - name: Saving all wheels
       uses: actions/upload-artifact@v2
       with:
         name: wheels
         path: wheelhouse/opencv*.whl
-
     - name: Saving a wheel accordingly to matrix
       uses: actions/upload-artifact@v2
       with:
@@ -106,7 +104,6 @@ jobs:
     defaults:
       run:
         shell: bash
-
     strategy:
       fail-fast: false
       matrix:
@@ -127,7 +124,6 @@ jobs:
             python-version: '3.8'
           - os: macos-11
             python-version: '3.9'
-
     env:
       ACTIONS_ALLOW_UNSECURE_COMMANDS: true
       MB_PYTHON_VERSION: ${{ matrix.python-version }}
@@ -136,44 +132,47 @@ jobs:
       CONFIG_PATH: travis_config.sh
       PLAT: x86_64
       OPENCV_TEST_DATA_PATH: ${{ github.workspace }}/opencv_extra/testdata
-
+      PYLINT_TEST_FILE: ${{ github.workspace }}/opencv/samples/python/squares.py
     steps:
+    - name: Cleanup
+      run: find . -mindepth 1 -delete
+      working-directory: ${{ github.workspace }}
     - name: Checkout
       uses: actions/checkout@v2
       with:
         submodules: true
         fetch-depth: 0
-
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v2
       with:
         python-version: ${{ matrix.python-version }}
         architecture: ${{ matrix.platform }}
-
     - name: Setup Environment variables
       run: if [ "3.10" == "${{ matrix.python-version }}" ]; then echo "TEST_DEPENDS=$(echo $NP_TEST_DEP_LATEST)" >> $GITHUB_ENV; else echo "TEST_DEPENDS=$(echo $NP_TEST_DEP)" >> $GITHUB_ENV; fi
-
     - name: Download a wheel accordingly to matrix
       uses: actions/download-artifact@v2
       with:
         name: wheel-${{ matrix.with_contrib }}-${{ matrix.without_gui }}-${{ matrix.build_sdist }}
         path: wheelhouse/
-
     - name: Package installation
       run: |
         python -m pip install wheelhouse/opencv*.whl
         cd ${{ github.workspace }}/tests
         python get_build_info.py
-
     - name: Run tests
       run: |
         cd ${{ github.workspace }}/opencv
         python modules/python/test/test.py -v --repo .
+    - name: Pylint test
+      run: |
+        python -m pip install pylint==2.12.2
+        cd ${{ github.workspace }}/tests
+        python -m pylint $PYLINT_TEST_FILE
 
   test_release_opencv_python:
     if: github.event_name == 'release' && github.event.release.prerelease
     needs: [build, test]
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     environment: test-opencv-python-release
     defaults:
       run:
@@ -183,7 +182,6 @@ jobs:
         with:
           name: wheels
           path: wheelhouse/
-
       - name: Upload all wheels
         run: |
           python -m pip install twine
@@ -192,7 +190,7 @@ jobs:
   release_opencv_python:
     if: github.event_name == 'release' && !github.event.release.prerelease
     needs: [build, test]
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     environment: opencv-python-release
     defaults:
       run:
@@ -202,22 +200,18 @@ jobs:
         with:
           name: wheels
           path: wheelhouse/
-
       - name: Upload wheels for opencv_python
         run: |
           python -m pip install twine
           python -m twine upload -u ${{ secrets.OPENCV_PYTHON_USERNAME }} -p ${{ secrets.OPENCV_PYTHON_PASSWORD }} --skip-existing wheelhouse/opencv_python-*
-
       - name: Upload wheels for opencv_contrib_python
         run: |
           python -m pip install twine
           python -m twine upload -u ${{ secrets.OPENCV_CONTRIB_PYTHON_USERNAME }} -p ${{ secrets.OPENCV_CONTRIB_PYTHON_PASSWORD }} --skip-existing wheelhouse/opencv_contrib_python-*
-
       - name: Upload wheels for opencv_python_headless
         run: |
           python -m pip install twine
           python -m twine upload -u ${{ secrets.OPENCV_PYTHON_HEADLESS_USERNAME }} -p ${{ secrets.OPENCV_PYTHON_HEADLESS_PASSWORD }} --skip-existing wheelhouse/opencv_python_headless-*
-
       - name: Upload wheels for opencv_contrib_python_headless
         run: |
           python -m pip install twine
diff --git a/.github/workflows/build_wheels_macos_m1.yml b/.github/workflows/build_wheels_macos_m1.yml
index 3711e1b3..a1d7c924 100644
--- a/.github/workflows/build_wheels_macos_m1.yml
+++ b/.github/workflows/build_wheels_macos_m1.yml
@@ -4,6 +4,7 @@ on:
   pull_request:
     branches:
       - master
+      - 3.4
     paths-ignore:
       - '.github/workflows/build_wheels_linux*'
       - '.github/workflows/build_wheels_windows*'
@@ -14,35 +15,32 @@ on:
 
 jobs:
   build:
-    runs-on: ${{ matrix.os }}
-
+    runs-on: opencv-cn-mac-arm64
     strategy:
       fail-fast: false
       matrix:
-        os: [macOS-M1]
         python-version: ['3.7']
         platform: [x64]
         with_contrib: [0, 1]
         without_gui: [0, 1]
         build_sdist: [0]
-
     env:
       CI_BUILD: 1
       SDIST: ${{ matrix.build_sdist || 0 }}
       ENABLE_HEADLESS: ${{ matrix.without_gui }}
       ENABLE_CONTRIB: ${{ matrix.with_contrib }}
-
     steps:
+    - name: Cleanup
+      run: find . -mindepth 1 -delete
+      working-directory: ${{ github.workspace }}
     - name: Checkout
       uses: actions/checkout@v2
       with:
         submodules: false
         fetch-depth: 0
-
     - name: Update submodules
       if: github.event_name == 'pull_request'
       run: git submodule update --remote
-
     - name: Build a package
       run: |
         git submodule update --init multibuild
@@ -52,13 +50,11 @@ jobs:
         arch -arm64 python${{ matrix.python-version }} -m pip install toml && python${{ matrix.python-version }} -c 'import toml; c = toml.load("pyproject.toml"); print("\n".join(c["build-system"]["requires"]))' | python${{ matrix.python-version }} -m pip install -r /dev/stdin
         arch -arm64 python${{ matrix.python-version }} setup.py bdist_wheel --py-limited-api=cp37 --dist-dir=wheelhouse -v
         delocate-wheel ${{ github.workspace }}/wheelhouse/opencv*
-
     - name: Saving all wheels
       uses: actions/upload-artifact@v2
       with:
         name: wheels
         path: wheelhouse/opencv*.whl
-
     - name: Saving a wheel accordingly to matrix
       uses: actions/upload-artifact@v2
       with:
@@ -67,49 +63,51 @@ jobs:
 
   test:
     needs: [build]
-    runs-on: ${{ matrix.os }}
-
+    runs-on: opencv-cn-mac-arm64-tests
     strategy:
       fail-fast: false
       matrix:
-        os: [macOS-M1]
         python-version: ['3.7', '3.8', '3.9', '3.10']
         platform: [x64]
         with_contrib: [0, 1]
         without_gui: [0, 1]
         build_sdist: [0]
-
     env:
       OPENCV_TEST_DATA_PATH: ${{ github.workspace }}/opencv_extra/testdata
-
+      PYLINT_TEST_FILE: ${{ github.workspace }}/opencv/samples/python/squares.py
     steps:
+    - name: Cleanup
+      run: find . -mindepth 1 -delete
+      working-directory: ${{ github.workspace }}
     - name: Checkout
       uses: actions/checkout@v2
       with:
         submodules: true
         fetch-depth: 0
-
     - name: Download a wheel accordingly to matrix
       uses: actions/download-artifact@v2
       with:
         name: wheel-${{ matrix.with_contrib }}-${{ matrix.without_gui }}-${{ matrix.build_sdist }}
         path: wheelhouse/
-
     - name: Package installation
       run: |
         arch -arm64 python${{ matrix.python-version }} -m pip install --user --no-cache --force-reinstall wheelhouse/opencv*.whl
         cd ${{ github.workspace }}/tests
         arch -arm64 python${{ matrix.python-version }} get_build_info.py
-
     - name: Run tests
       run: |
         cd ${{ github.workspace }}/opencv
         arch -arm64 python${{ matrix.python-version }} modules/python/test/test.py -v --repo .
+    - name: Pylint test
+      run: |
+        arch -arm64 python${{ matrix.python-version }} -m pip install pylint==2.12.2
+        cd ${{ github.workspace }}/tests
+        arch -arm64 python${{ matrix.python-version }} -m pylint $PYLINT_TEST_FILE
 
   test_release_opencv_python:
     if: github.event_name == 'release' && github.event.release.prerelease
     needs: [build, test]
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     environment: test-opencv-python-release
     defaults:
       run:
@@ -128,7 +126,7 @@ jobs:
   release_opencv_python:
     if: github.event_name == 'release' && !github.event.release.prerelease
     needs: [build, test]
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     environment: opencv-python-release
     defaults:
       run:
@@ -138,7 +136,6 @@ jobs:
         with:
           name: wheels
           path: wheelhouse/
-
       - name: Upload wheels for opencv_python
         run: |
           python -m pip install twine
diff --git a/.github/workflows/build_wheels_windows.yml b/.github/workflows/build_wheels_windows.yml
index 0f697291..087efc04 100644
--- a/.github/workflows/build_wheels_windows.yml
+++ b/.github/workflows/build_wheels_windows.yml
@@ -4,6 +4,7 @@ on:
   pull_request:
     branches:
       - master
+      - 3.4
     paths-ignore:
       - '.github/workflows/build_wheels_linux*'
       - '.github/workflows/build_wheels_macos*'
@@ -13,48 +14,43 @@ on:
 
 jobs:
   build-windows-x86_64:
-    runs-on: ${{ matrix.os }}
-    defaults:
-      run:
-        shell: powershell
-
+    runs-on: windows-2019
     strategy:
       fail-fast: false
       matrix:
-        os: [windows-latest]
         python-version: ['3.6']
         platform: [x86, x64]
         with_contrib: [0, 1]
         without_gui: [0, 1]
         build_sdist: [0]
-
     env:
       ACTIONS_ALLOW_UNSECURE_COMMANDS: true
       SDIST: ${{ matrix.build_sdist || 0 }}
       ENABLE_HEADLESS: ${{ matrix.without_gui }}
       ENABLE_CONTRIB: ${{ matrix.with_contrib }}
       OPENCV_TEST_DATA_PATH: ${{ github.workspace }}\opencv_extra\testdata
-
     steps:
+    - name: Cleanup
+      shell: bash
+      run: |
+        rm -rf ./* || true
+        rm -rf ./.??* || true
+      working-directory: ${{ github.workspace }}
     - name: Checkout
       uses: actions/checkout@v2
       with:
         submodules: false
         fetch-depth: 0
-
     - name: Update submodules
       if: github.event_name == 'pull_request'
       run: git submodule update --remote
-
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v2
       with:
         python-version: ${{ matrix.python-version }}
         architecture: ${{ matrix.platform }}
-
     - name: Setup MSBuild.exe
-      uses: warrenbuckley/Setup-MSBuild@v1
-
+      uses: microsoft/setup-msbuild@v1.1
     - name: Build a package
       run: |
         python --version
@@ -63,13 +59,11 @@ jobs:
         python -m pip install toml && python -c "import toml; c = toml.load('pyproject.toml'); print('\n'.join(c['build-system']['requires']))" >> requirements.txt | python -m pip install -r requirements.txt
         set "CI_BUILD=1" && python setup.py bdist_wheel --py-limited-api=cp36 --dist-dir=%cd%\wheelhouse -v
       shell: cmd
-
     - name: Saving all wheels
       uses: actions/upload-artifact@v2
       with:
         name: wheels
         path: wheelhouse/opencv*.whl
-
     - name: Saving a wheel accordingly to matrix
       uses: actions/upload-artifact@v2
       with:
@@ -78,44 +72,44 @@ jobs:
 
   test:
     needs: [build-windows-x86_64]
-    runs-on: ${{ matrix.os }}
+    runs-on: windows-2019
     defaults:
       run:
-        shell: powershell
-
+        shell: cmd
     strategy:
       fail-fast: false
       matrix:
-        os: [windows-latest]
         python-version: ['3.6', '3.7', '3.8', '3.9', '3.10']
         platform: [x86, x64]
         with_contrib: [0, 1]
         without_gui: [0, 1]
         build_sdist: [0]
-
     env:
       ACTIONS_ALLOW_UNSECURE_COMMANDS: true
       OPENCV_TEST_DATA_PATH: ${{ github.workspace }}\opencv_extra\testdata
-
+      PYLINT_TEST_FILE: ${{ github.workspace }}\opencv\samples\python\squares.py
     steps:
+    - name: Cleanup
+      shell: bash
+      run: |
+        rm -rf ./* || true
+        rm -rf ./.??* || true
+      working-directory: ${{ github.workspace }}
     - name: Checkout
       uses: actions/checkout@v2
       with:
         submodules: true
         fetch-depth: 0
-
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v2
       with:
         python-version: ${{ matrix.python-version }}
         architecture: ${{ matrix.platform }}
-
     - name: Download a wheel accordingly to matrix
       uses: actions/download-artifact@v2
       with:
         name: wheel-${{ matrix.with_contrib }}-${{ matrix.without_gui }}-${{ matrix.build_sdist }}-${{ matrix.platform }}
         path: wheelhouse/
-
     - name: Package installation
       run: |
         cd ${{ github.workspace }}/tests
@@ -123,17 +117,20 @@ jobs:
         if ($LastExitCode -ne 0) {throw $LastExitCode}
         python get_build_info.py
       shell: powershell
-
     - name: Run tests
       run: |
         cd ${{ github.workspace }}/opencv
         python modules\python\test\test.py -v --repo .
-      shell: cmd
+    - name: Pylint test
+      run: |
+        python -m pip install pylint==2.12.2
+        cd ${{ github.workspace }}\tests
+        python -m pylint $PYLINT_TEST_FILE
 
   test_release_opencv_python:
     if: github.event_name == 'release' && github.event.release.prerelease
     needs: [build-windows-x86_64, test]
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     environment: test-opencv-python-release
     defaults:
       run:
@@ -143,7 +140,6 @@ jobs:
         with:
           name: wheels
           path: wheelhouse/
-
       - name: Upload all wheels
         run: |
           python -m pip install twine
@@ -152,7 +148,7 @@ jobs:
   release_opencv_python:
     if: github.event_name == 'release' && !github.event.release.prerelease
     needs: [build-windows-x86_64, test]
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     environment: opencv-python-release
     defaults:
       run:
@@ -162,22 +158,18 @@ jobs:
         with:
           name: wheels
           path: wheelhouse/
-
       - name: Upload wheels for opencv_python
         run: |
           python -m pip install twine
           python -m twine upload -u ${{ secrets.OPENCV_PYTHON_USERNAME }} -p ${{ secrets.OPENCV_PYTHON_PASSWORD }} --skip-existing wheelhouse/opencv_python-*
-
       - name: Upload wheels for opencv_contrib_python
         run: |
           python -m pip install twine
           python -m twine upload -u ${{ secrets.OPENCV_CONTRIB_PYTHON_USERNAME }} -p ${{ secrets.OPENCV_CONTRIB_PYTHON_PASSWORD }} --skip-existing wheelhouse/opencv_contrib_python-*
-
       - name: Upload wheels for opencv_python_headless
         run: |
           python -m pip install twine
           python -m twine upload -u ${{ secrets.OPENCV_PYTHON_HEADLESS_USERNAME }} -p ${{ secrets.OPENCV_PYTHON_HEADLESS_PASSWORD }} --skip-existing wheelhouse/opencv_python_headless-*
-
       - name: Upload wheels for opencv_contrib_python_headless
         run: |
           python -m pip install twine
diff --git a/.gitmodules b/.gitmodules
index 655467e8..7193d3b9 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -6,7 +6,7 @@
 	url = https://github.com/opencv/opencv_contrib.git
 [submodule "multibuild"]
 	path = multibuild
-	url = https://github.com/matthew-brett/multibuild.git
+	url = https://github.com/multi-build/multibuild.git
 [submodule "opencv_extra"]
 	path = opencv_extra
 	url = https://github.com/opencv/opencv_extra.git
diff --git a/docker/manylinux2014/Dockerfile_aarch64 b/docker/manylinux2014/Dockerfile_aarch64
index b380d3ba..2679cbbf 100644
--- a/docker/manylinux2014/Dockerfile_aarch64
+++ b/docker/manylinux2014/Dockerfile_aarch64
@@ -1,80 +1,142 @@
+# Version: 20220628
+# Image name: quay.io/opencv-ci/opencv-python-manylinux2014-aarch64
+
 FROM quay.io/pypa/manylinux2014_aarch64:latest
 
 ARG CCACHE_VERSION=3.7.9
 ARG FFMPEG_VERSION=4.4.1
+ARG FREETYPE_VERSION=2.12.1
+ARG LIBPNG_VERSION=1.6.37
 ARG NASM_VERSION=2.15.04
-ARG OPENSSL_VERSION=1_1_1m
+ARG OPENSSL_VERSION=1_1_1o
 ARG QT_VERSION=5.15.0
 ARG YASM_VERSION=1.3.0
 
-RUN yum install bzip2-devel curl-devel zlib-devel xcb-util-renderutil-devel xcb-util-devel xcb-util-image-devel xcb-util-keysyms-devel xcb-util-wm-devel mesa-libGL-devel libxkbcommon-devel libxkbcommon-x11-devel libXi-devel freetype-devel -y
+ENV LD_LIBRARY_PATH /usr/local/lib:$LD_LIBRARY_PATH
+
+# epel-release need for aarch64 to get openblas packages
+RUN yum install bzip2-devel curl-devel zlib-devel xcb-util-renderutil-devel xcb-util-devel xcb-util-image-devel xcb-util-keysyms-devel xcb-util-wm-devel mesa-libGL-devel libxkbcommon-devel libxkbcommon-x11-devel libXi-devel lapack-devel epel-release -y && \
+    yum install openblas-devel -y && \
+    cp /usr/include/lapacke/lapacke*.h /usr/include/ && \
+    curl https://raw.githubusercontent.com/xianyi/OpenBLAS/v0.3.3/cblas.h -o /usr/include/cblas.h && \
+    # libpng will be built from source
+    yum remove libpng -y
+
+RUN mkdir ~/libpng_sources && \
+    cd ~/libpng_sources && \
+    curl -O -L https://download.sourceforge.net/libpng/libpng-${LIBPNG_VERSION}.tar.gz && \
+    tar -xf libpng-${LIBPNG_VERSION}.tar.gz && \
+    cd libpng-${LIBPNG_VERSION} && \
+    ./configure --prefix=/usr/local && \
+    make && \
+    make install && \
+    cd .. && \
+    rm -rf ~/libpng_sources
+
+RUN mkdir ~/freetype_sources && \
+    cd ~/freetype_sources && \
+    curl -O -L https://download.savannah.gnu.org/releases/freetype/freetype-${FREETYPE_VERSION}.tar.gz && \
+    tar -xf freetype-${FREETYPE_VERSION}.tar.gz && \
+    cd freetype-${FREETYPE_VERSION} && \
+    ./configure --prefix="/ffmpeg_build" --enable-freetype-config && \
+    make && \
+    make install && \
+    cd .. && \
+    rm -rf ~/freetype_sources
 
 RUN curl -O -L https://download.qt.io/official_releases/qt/5.15/${QT_VERSION}/single/qt-everywhere-src-${QT_VERSION}.tar.xz && \
     tar -xf qt-everywhere-src-${QT_VERSION}.tar.xz && \
-    cd qt-everywhere* && \
+    cd qt-everywhere-src-${QT_VERSION} && \
     export MAKEFLAGS=-j$(nproc) && \
     ./configure -prefix /opt/Qt${QT_VERSION} -release -opensource -confirm-license -qtnamespace QtOpenCVPython -xcb -xcb-xlib -bundled-xcb-xinput -no-openssl -no-dbus -skip qt3d -skip qtactiveqt -skip qtcanvas3d -skip qtconnectivity -skip qtdatavis3d -skip qtdoc -skip qtgamepad -skip qtgraphicaleffects -skip qtimageformats -skip qtlocation -skip qtmultimedia -skip qtpurchasing -skip qtqa -skip qtremoteobjects -skip qtrepotools -skip qtscript -skip qtscxml -skip qtsensors -skip qtserialbus -skip qtserialport -skip qtspeech -skip qttranslations -skip qtwayland -skip qtwebchannel -skip qtwebengine -skip qtwebsockets -skip qtwebview -skip xmlpatterns -skip declarative -make libs && \
     make && \
     make install && \
     cd .. && \
-    rm -rf qt-everywhere-src-${QT_VERSION} && \
-    rm qt-everywhere-src-${QT_VERSION}.tar.xz
+    rm -rf qt-everywhere*
 
 ENV QTDIR /opt/Qt${QT_VERSION}
 ENV PATH "$QTDIR/bin:$PATH"
 
-RUN mkdir ~/ffmpeg_sources && \
-    cd ~/ffmpeg_sources && \
+RUN mkdir ~/openssl_sources && \
+    cd ~/openssl_sources && \
     curl -O -L https://github.com/openssl/openssl/archive/OpenSSL_${OPENSSL_VERSION}.tar.gz && \
     tar -xf OpenSSL_${OPENSSL_VERSION}.tar.gz && \
     cd openssl-OpenSSL_${OPENSSL_VERSION} && \
-    ./config --prefix="$HOME/ffmpeg_build" --openssldir="$HOME/ffmpeg_build" no-pinshared shared zlib && \
+    ./config --prefix="/ffmpeg_build" --openssldir="/ffmpeg_build" no-pinshared shared zlib && \
     make -j$(getconf _NPROCESSORS_ONLN) && \
     # skip installing documentation
     make install_sw && \
-    rm -rf ~/openssl_build
+    cd .. && \
+    rm -rf ~/openssl_build ~/openssl_sources
 
-RUN cd ~/ffmpeg_sources && \
+RUN mkdir ~/nasm_sources && \
+    cd ~/nasm_sources && \
     curl -O -L http://www.nasm.us/pub/nasm/releasebuilds/${NASM_VERSION}/nasm-${NASM_VERSION}.tar.bz2 && \
     tar -xf nasm-${NASM_VERSION}.tar.bz2 && cd nasm-${NASM_VERSION} && ./autogen.sh && \
-    ./configure --prefix="$HOME/ffmpeg_build" --bindir="$HOME/bin" && \
+    ./configure --prefix="/ffmpeg_build" --bindir="$HOME/bin" && \
     make -j$(getconf _NPROCESSORS_ONLN) && \
-    make install
+    make install && \
+    cd .. && \
+    rm -rf ~/nasm_sources
 
-RUN cd ~/ffmpeg_sources && \
+RUN mkdir ~/yasm_sources && \
+    cd ~/yasm_sources && \
     curl -O -L http://www.tortall.net/projects/yasm/releases/yasm-${YASM_VERSION}.tar.gz && \
     tar -xf yasm-${YASM_VERSION}.tar.gz && \
     cd yasm-${YASM_VERSION} && \
-    ./configure --prefix="$HOME/ffmpeg_build" --bindir="$HOME/bin" && \
+    ./configure --prefix="/ffmpeg_build" --bindir="$HOME/bin" && \
     make -j$(getconf _NPROCESSORS_ONLN) && \
-    make install
+    make install && \
+    cd .. && \
+    rm -rf ~/yasm_sources
 
-RUN cd ~/ffmpeg_sources && \
-    git clone --depth 1 https://chromium.googlesource.com/webm/libvpx.git && \
+RUN mkdir ~/libvpx_sources && \
+    cd ~/libvpx_sources && \
+    git clone --depth 1 https://github.com/webmproject/libvpx.git && \
     cd libvpx && \
-    ./configure --prefix="$HOME/ffmpeg_build" --disable-examples --disable-unit-tests --enable-vp9-highbitdepth --as=yasm --enable-pic --enable-shared && \
+    ./configure --prefix="/ffmpeg_build" --disable-examples --disable-unit-tests --enable-vp9-highbitdepth --as=yasm --enable-pic --enable-shared && \
     make -j$(getconf _NPROCESSORS_ONLN) && \
-    make install
+    make install && \
+    cd .. && \
+    rm -rf ~/libvpx_sources
 
-RUN cd ~/ffmpeg_sources && \
+RUN mkdir ~/ffmpeg_sources && \
+    cd ~/ffmpeg_sources && \
     curl -O -L https://ffmpeg.org/releases/ffmpeg-${FFMPEG_VERSION}.tar.bz2 && \
     tar -xf ffmpeg-${FFMPEG_VERSION}.tar.bz2 && \
     cd ffmpeg-${FFMPEG_VERSION} && \
     PATH=~/bin:$PATH && \
-    PKG_CONFIG_PATH="$HOME/ffmpeg_build/lib/pkgconfig" ./configure --prefix="$HOME/ffmpeg_build" --extra-cflags="-I$HOME/ffmpeg_build/include" --extra-ldflags="-L$HOME/ffmpeg_build/lib" --enable-openssl --enable-libvpx --enable-shared --enable-pic --bindir="$HOME/bin" && \
+    PKG_CONFIG_PATH="/ffmpeg_build/lib/pkgconfig" ./configure --prefix="/ffmpeg_build" --extra-cflags="-I/ffmpeg_build/include" --extra-ldflags="-L/ffmpeg_build/lib" --enable-openssl --enable-libvpx --enable-shared --enable-pic --bindir="$HOME/bin" && \
     make -j$(getconf _NPROCESSORS_ONLN) && \
     make install && \
-    echo "/root/ffmpeg_build/lib/" >> /etc/ld.so.conf && \
+    echo "/ffmpeg_build/lib/" >> /etc/ld.so.conf && \
     ldconfig && \
-    rm -rf ~/ffmpeg_sources
+    rm -rf ~/ffmpeg_sources && \
+    yum remove bzip2-devel -y
 
 RUN curl -O -L https://github.com/ccache/ccache/releases/download/v${CCACHE_VERSION}/ccache-${CCACHE_VERSION}.tar.gz && \
     tar -xf ccache-${CCACHE_VERSION}.tar.gz && \
     cd ccache-${CCACHE_VERSION} && \
     linux32 ./configure && \
     make -j$(getconf _NPROCESSORS_ONLN) && \
-    make install
+    make install && \
+    cd .. && \
+    rm -rf ccache-${CCACHE_VERSION}.tar.gz
+
+# Self-hosted runner UID is 1004
+RUN useradd ci -m -s /bin/bash -G users --uid=1004 && \
+    mkdir /io && \
+    chown -R ci:ci /io && \
+    # This needs to find ffmpeg packages from ci user
+    chown -R ci:ci /ffmpeg_build && \
+    # This calls in mutlibuild scripts and cannot be run without permissions
+    chown -R ci:ci /opt/_internal/pipx/venvs/auditwheel
+
+USER ci
+
+# Git security vulnerability: https://github.blog/2022-04-12-git-security-vulnerability-announced
+RUN git config --global --add safe.directory /io
 
-ENV PKG_CONFIG_PATH /usr/local/lib/pkgconfig:/root/ffmpeg_build/lib/pkgconfig
-ENV LDFLAGS -L/root/ffmpeg_build/lib
+ENV PKG_CONFIG_PATH /usr/local/lib/pkgconfig:/ffmpeg_build/lib/pkgconfig
+ENV LDFLAGS -L/ffmpeg_build/lib
 ENV PATH "$HOME/bin:$PATH"
diff --git a/docker/manylinux2014/Dockerfile_x86_64 b/docker/manylinux2014/Dockerfile_x86_64
index fb367c0a..8bb77341 100644
--- a/docker/manylinux2014/Dockerfile_x86_64
+++ b/docker/manylinux2014/Dockerfile_x86_64
@@ -1,72 +1,142 @@
+# Version: 20220628
+# Image name: quay.io/opencv-ci/opencv-python-manylinux2014-x86-64
+
 FROM quay.io/pypa/manylinux2014_x86_64:latest
 
+ARG CCACHE_VERSION=3.7.9
 ARG FFMPEG_VERSION=4.4.1
+ARG FREETYPE_VERSION=2.12.1
+ARG LIBPNG_VERSION=1.6.37
 ARG NASM_VERSION=2.15.04
-ARG OPENSSL_VERSION=1_1_1m
+ARG OPENSSL_VERSION=1_1_1o
 ARG QT_VERSION=5.15.0
 ARG YASM_VERSION=1.3.0
 
-RUN yum install bzip2-devel curl-devel zlib-devel xcb-util-renderutil-devel xcb-util-devel xcb-util-image-devel xcb-util-keysyms-devel xcb-util-wm-devel mesa-libGL-devel libxkbcommon-devel libxkbcommon-x11-devel libXi-devel freetype-devel -y
+ENV LD_LIBRARY_PATH /usr/local/lib:$LD_LIBRARY_PATH
+
+# epel-release need for aarch64 to get openblas packages
+RUN yum install bzip2-devel curl-devel zlib-devel xcb-util-renderutil-devel xcb-util-devel xcb-util-image-devel xcb-util-keysyms-devel xcb-util-wm-devel mesa-libGL-devel libxkbcommon-devel libxkbcommon-x11-devel libXi-devel lapack-devel epel-release -y && \
+    yum install openblas-devel -y && \
+    cp /usr/include/lapacke/lapacke*.h /usr/include/ && \
+    curl https://raw.githubusercontent.com/xianyi/OpenBLAS/v0.3.3/cblas.h -o /usr/include/cblas.h && \
+    # libpng will be built from source
+    yum remove libpng -y
+
+RUN mkdir ~/libpng_sources && \
+    cd ~/libpng_sources && \
+    curl -O -L https://download.sourceforge.net/libpng/libpng-${LIBPNG_VERSION}.tar.gz && \
+    tar -xf libpng-${LIBPNG_VERSION}.tar.gz && \
+    cd libpng-${LIBPNG_VERSION} && \
+    ./configure --prefix=/usr/local && \
+    make && \
+    make install && \
+    cd .. && \
+    rm -rf ~/libpng_sources
+
+RUN mkdir ~/freetype_sources && \
+    cd ~/freetype_sources && \
+    curl -O -L https://download.savannah.gnu.org/releases/freetype/freetype-${FREETYPE_VERSION}.tar.gz && \
+    tar -xf freetype-${FREETYPE_VERSION}.tar.gz && \
+    cd freetype-${FREETYPE_VERSION} && \
+    ./configure --prefix="/ffmpeg_build" --enable-freetype-config && \
+    make && \
+    make install && \
+    cd .. && \
+    rm -rf ~/freetype_sources
 
 RUN curl -O -L https://download.qt.io/official_releases/qt/5.15/${QT_VERSION}/single/qt-everywhere-src-${QT_VERSION}.tar.xz && \
     tar -xf qt-everywhere-src-${QT_VERSION}.tar.xz && \
-    cd qt-everywhere* && \
+    cd qt-everywhere-src-${QT_VERSION} && \
     export MAKEFLAGS=-j$(nproc) && \
     ./configure -prefix /opt/Qt${QT_VERSION} -release -opensource -confirm-license -qtnamespace QtOpenCVPython -xcb -xcb-xlib -bundled-xcb-xinput -no-openssl -no-dbus -skip qt3d -skip qtactiveqt -skip qtcanvas3d -skip qtconnectivity -skip qtdatavis3d -skip qtdoc -skip qtgamepad -skip qtgraphicaleffects -skip qtimageformats -skip qtlocation -skip qtmultimedia -skip qtpurchasing -skip qtqa -skip qtremoteobjects -skip qtrepotools -skip qtscript -skip qtscxml -skip qtsensors -skip qtserialbus -skip qtserialport -skip qtspeech -skip qttranslations -skip qtwayland -skip qtwebchannel -skip qtwebengine -skip qtwebsockets -skip qtwebview -skip xmlpatterns -skip declarative -make libs && \
     make && \
     make install && \
     cd .. && \
-    rm -rf qt-everywhere-src-${QT_VERSION} && \
-    rm qt-everywhere-src-${QT_VERSION}.tar.xz
+    rm -rf qt-everywhere*
 
 ENV QTDIR /opt/Qt${QT_VERSION}
 ENV PATH "$QTDIR/bin:$PATH"
 
-RUN mkdir ~/ffmpeg_sources && \
-    cd ~/ffmpeg_sources && \
+RUN mkdir ~/openssl_sources && \
+    cd ~/openssl_sources && \
     curl -O -L https://github.com/openssl/openssl/archive/OpenSSL_${OPENSSL_VERSION}.tar.gz && \
     tar -xf OpenSSL_${OPENSSL_VERSION}.tar.gz && \
     cd openssl-OpenSSL_${OPENSSL_VERSION} && \
-    ./config --prefix="$HOME/ffmpeg_build" --openssldir="$HOME/ffmpeg_build" no-pinshared shared zlib && \
+    ./config --prefix="/ffmpeg_build" --openssldir="/ffmpeg_build" no-pinshared shared zlib && \
     make -j$(getconf _NPROCESSORS_ONLN) && \
     # skip installing documentation
     make install_sw && \
-    rm -rf ~/openssl_build
+    cd .. && \
+    rm -rf ~/openssl_build ~/openssl_sources
 
-RUN cd ~/ffmpeg_sources && \
+RUN mkdir ~/nasm_sources && \
+    cd ~/nasm_sources && \
     curl -O -L http://www.nasm.us/pub/nasm/releasebuilds/${NASM_VERSION}/nasm-${NASM_VERSION}.tar.bz2 && \
     tar -xf nasm-${NASM_VERSION}.tar.bz2 && cd nasm-${NASM_VERSION} && ./autogen.sh && \
-    ./configure --prefix="$HOME/ffmpeg_build" --bindir="$HOME/bin" && \
+    ./configure --prefix="/ffmpeg_build" --bindir="$HOME/bin" && \
     make -j$(getconf _NPROCESSORS_ONLN) && \
-    make install
+    make install && \
+    cd .. && \
+    rm -rf ~/nasm_sources
 
-RUN cd ~/ffmpeg_sources && \
+RUN mkdir ~/yasm_sources && \
+    cd ~/yasm_sources && \
     curl -O -L http://www.tortall.net/projects/yasm/releases/yasm-${YASM_VERSION}.tar.gz && \
     tar -xf yasm-${YASM_VERSION}.tar.gz && \
     cd yasm-${YASM_VERSION} && \
-    ./configure --prefix="$HOME/ffmpeg_build" --bindir="$HOME/bin" && \
+    ./configure --prefix="/ffmpeg_build" --bindir="$HOME/bin" && \
     make -j$(getconf _NPROCESSORS_ONLN) && \
-    make install
+    make install && \
+    cd .. && \
+    rm -rf ~/yasm_sources
 
-RUN cd ~/ffmpeg_sources && \
+RUN mkdir ~/libvpx_sources && \
+    cd ~/libvpx_sources && \
     git clone --depth 1 https://chromium.googlesource.com/webm/libvpx.git && \
     cd libvpx && \
-    ./configure --prefix="$HOME/ffmpeg_build" --disable-examples --disable-unit-tests --enable-vp9-highbitdepth --as=yasm --enable-pic --enable-shared && \
+    ./configure --prefix="/ffmpeg_build" --disable-examples --disable-unit-tests --enable-vp9-highbitdepth --as=yasm --enable-pic --enable-shared && \
     make -j$(getconf _NPROCESSORS_ONLN) && \
-    make install
+    make install && \
+    cd .. && \
+    rm -rf ~/libvpx_sources
 
-RUN cd ~/ffmpeg_sources && \
+RUN mkdir ~/ffmpeg_sources && \
+    cd ~/ffmpeg_sources && \
     curl -O -L https://ffmpeg.org/releases/ffmpeg-${FFMPEG_VERSION}.tar.bz2 && \
     tar -xf ffmpeg-${FFMPEG_VERSION}.tar.bz2 && \
     cd ffmpeg-${FFMPEG_VERSION} && \
     PATH=~/bin:$PATH && \
-    PKG_CONFIG_PATH="$HOME/ffmpeg_build/lib/pkgconfig" ./configure --prefix="$HOME/ffmpeg_build" --extra-cflags="-I$HOME/ffmpeg_build/include" --extra-ldflags="-L$HOME/ffmpeg_build/lib" --enable-openssl --enable-libvpx --enable-shared --enable-pic --bindir="$HOME/bin" && \
+    PKG_CONFIG_PATH="/ffmpeg_build/lib/pkgconfig" ./configure --prefix="/ffmpeg_build" --extra-cflags="-I/ffmpeg_build/include" --extra-ldflags="-L/ffmpeg_build/lib" --enable-openssl --enable-libvpx --enable-shared --enable-pic --bindir="$HOME/bin" && \
     make -j$(getconf _NPROCESSORS_ONLN) && \
     make install && \
-    echo "/root/ffmpeg_build/lib/" >> /etc/ld.so.conf && \
+    echo "/ffmpeg_build/lib/" >> /etc/ld.so.conf && \
     ldconfig && \
-    rm -rf ~/ffmpeg_sources
+    rm -rf ~/ffmpeg_sources && \
+    yum remove bzip2-devel -y
+
+RUN curl -O -L https://github.com/ccache/ccache/releases/download/v${CCACHE_VERSION}/ccache-${CCACHE_VERSION}.tar.gz && \
+    tar -xf ccache-${CCACHE_VERSION}.tar.gz && \
+    cd ccache-${CCACHE_VERSION} && \
+    ./configure && \
+    make -j$(getconf _NPROCESSORS_ONLN) && \
+    make install && \
+    cd .. && \
+    rm -rf ccache-${CCACHE_VERSION}.tar.gz
+
+# GitHub Actions user`s UID is 1001
+RUN useradd ci -m -s /bin/bash -G users --uid=1001 && \
+    mkdir /io && \
+    chown -R ci:ci /io && \
+    # This needs to find ffmpeg packages from ci user
+    chown -R ci:ci /ffmpeg_build && \
+    # This calls in mutlibuild scripts and cannot be run without permissions
+    chown -R ci:ci /opt/_internal/pipx/venvs/auditwheel
+
+USER ci
+
+# Git security vulnerability: https://github.blog/2022-04-12-git-security-vulnerability-announced
+RUN git config --global --add safe.directory /io
 
-ENV PKG_CONFIG_PATH /usr/local/lib/pkgconfig:/root/ffmpeg_build/lib/pkgconfig
-ENV LDFLAGS -L/root/ffmpeg_build/lib
+ENV PKG_CONFIG_PATH /usr/local/lib/pkgconfig:/ffmpeg_build/lib/pkgconfig
+ENV LDFLAGS -L/ffmpeg_build/lib
 ENV PATH "$HOME/bin:$PATH"
diff --git a/multibuild b/multibuild
index b89bb903..bce1637e 160000
--- a/multibuild
+++ b/multibuild
@@ -1 +1 @@
-Subproject commit b89bb903e94308be79abefa4f436bf123ebb1313
+Subproject commit bce1637e202cb52b0e7ea42baa1cccc894b82806
diff --git a/opencv b/opencv
index dad26339..b0dc4741 160000
--- a/opencv
+++ b/opencv
@@ -1 +1 @@
-Subproject commit dad26339a975b49cfb6c7dbe4bd5276c9dcb36e2
+Subproject commit b0dc474160e389b9c9045da5db49d03ae17c6a6b
diff --git a/opencv_contrib b/opencv_contrib
index 49e8f123..db16caf6 160000
--- a/opencv_contrib
+++ b/opencv_contrib
@@ -1 +1 @@
-Subproject commit 49e8f123ca08e76891856a1ecce491b62d08ba20
+Subproject commit db16caf6ceee76b43b94c846be276e92a43e9700
diff --git a/opencv_extra b/opencv_extra
index 37294e3c..936854e2 160000
--- a/opencv_extra
+++ b/opencv_extra
@@ -1 +1 @@
-Subproject commit 37294e3c876a72c992d4718b9bbfc8346b9e779a
+Subproject commit 936854e2b666853d6d0732a8eabc2d699f4fa3d8
diff --git a/pyproject.toml b/pyproject.toml
index 6aaab1d3..ff535e86 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,7 @@
 [build-system]
 requires = [
-  "setuptools", "wheel", "scikit-build", "cmake", "pip",
+  "setuptools==59.2.0", "wheel==0.37.0", "cmake>=3.1", "pip",
+  "scikit-build>=0.13.2",
   "numpy==1.13.3; python_version=='3.6' and platform_machine != 'aarch64' and platform_machine != 'arm64'",
   "numpy==1.14.5; python_version=='3.7' and platform_machine != 'aarch64' and platform_machine != 'arm64'",
   "numpy==1.17.3; python_version=='3.8' and platform_machine != 'aarch64' and platform_machine != 'arm64'",
diff --git a/setup.py b/setup.py
index 5b79e389..11014d6b 100644
--- a/setup.py
+++ b/setup.py
@@ -60,7 +60,7 @@ def main():
     )
 
     # https://stackoverflow.com/questions/1405913/python-32bit-or-64bit-mode
-    x64 = sys.maxsize > 2 ** 32
+    is64 = sys.maxsize > 2 ** 32
 
     package_name = "opencv-python"
 
@@ -88,7 +88,7 @@ def main():
     # Path regexes with forward slashes relative to CMake install dir.
     rearrange_cmake_output_data = {
         "cv2": (
-            [r"bin/opencv_videoio_ffmpeg\d{3}%s\.dll" % ("_64" if x64 else "")]
+            [r"bin/opencv_videoio_ffmpeg\d{3}%s\.dll" % ("_64" if is64 else "")]
             if os.name == "nt"
             else []
         )
@@ -130,7 +130,7 @@ def main():
     files_outside_package_dir = {"cv2": ["LICENSE.txt", "LICENSE-3RD-PARTY.txt"]}
 
     ci_cmake_generator = (
-        ["-G", "Visual Studio 14" + (" Win64" if x64 else "")]
+        ["-G", "Visual Studio 14" + (" Win64" if is64 else "")]
         if os.name == "nt"
         else ["-G", "Unix Makefiles"]
     )
@@ -161,12 +161,17 @@ def main():
             "-DBUILD_DOCS=OFF",
             "-DPYTHON3_LIMITED_API=ON",
             "-DBUILD_OPENEXR=ON",
-            "-DBUILD_PNG=ON",
         ]
         + (
+            # CMake flags for windows/arm64 build
+            ["-DCMAKE_GENERATOR_PLATFORM=ARM64",
+             # Emulated cmake requires following flags to correctly detect
+             # target architecture for windows/arm64 build
+             "-DOPENCV_WORKAROUND_CMAKE_20989=ON",
+             "-DCMAKE_SYSTEM_PROCESSOR=ARM64"]
+            if platform.machine() == "ARM64" and sys.platform == "win32"
             # If it is not defined 'linker flags: /machine:X86' on Windows x64
-            ["-DCMAKE_GENERATOR_PLATFORM=x64"]
-            if x64 and sys.platform == "win32"
+            else ["-DCMAKE_GENERATOR_PLATFORM=x64"] if is64 and sys.platform == "win32"
             else []
           )
         + (
@@ -186,7 +191,7 @@ def main():
                 "-DWITH_MSMF=OFF"
             )  # see: https://github.com/skvark/opencv-python/issues/263
 
-    if sys.platform.startswith("linux") and not x64 and "bdist_wheel" in sys.argv:
+    if sys.platform.startswith("linux") and not is64 and "bdist_wheel" in sys.argv:
         subprocess.check_call("patch -p0 < patches/patchOpenEXR", shell=True)
 
     # OS-specific components during CI builds
@@ -369,21 +374,6 @@ def _classify_installed_files_override(
 
         print("Copying files from CMake output")
 
-        # lines for a proper work using pylint and an autocomplete in IDE
-        with open(os.path.join(cmake_install_dir, "python", "cv2", "__init__.py"), 'r') as opencv_init:
-            opencv_init_lines = opencv_init.readlines()
-            extra_imports = ('\nfrom .cv2 import *\nfrom .cv2 import _registerMatType\nfrom . import mat_wrapper\nfrom . import gapi'
-                             '\nfrom . import misc\nfrom . import utils\nfrom . import data\nfrom . import version\n')
-            free_line_after_imports = 6
-            opencv_init_lines.insert(free_line_after_imports, extra_imports)
-            opencv_init_data = ""
-            for line in opencv_init_lines:
-                opencv_init_replacement = line.replace('importlib.import_module("cv2")', 'importlib.import_module("cv2.cv2")')
-                opencv_init_data = opencv_init_data + opencv_init_replacement
-
-        with open(os.path.join(cmake_install_dir, "python", "cv2", "__init__.py"), 'w') as opencv_final_init:
-            opencv_final_init.write(opencv_init_data)
-
         # add lines from the old __init__.py file to the config file
         with open(os.path.join(os.path.dirname(os.path.abspath(__file__)), 'scripts', '__init__.py'), 'r') as custom_init:
             custom_init_data = custom_init.read()
@@ -412,7 +402,8 @@ def _classify_installed_files_override(
                     final_install_relpaths.append(new_install_relpath)
                     del m, fslash_relpath, new_install_relpath
                 else:
-                    if not found:
+                    # gapi can be missed if ADE was not downloaded (network issue)
+                    if not found and "gapi" not in relpath_re:
                         raise Exception("Not found: '%s'" % relpath_re)
                 del r, found
 
@@ -451,7 +442,7 @@ def _classify_installed_files_override(
             data_files,
             # To get around a check that prepends source dir to paths and breaks package detection code.
             cmake_source_dir="",
-            cmake_install_dir=cmake_install_reldir,
+            _cmake_install_dir=cmake_install_reldir,
         )
 
 
diff --git a/tests/pylintrc b/tests/pylintrc
new file mode 100644
index 00000000..a3892018
--- /dev/null
+++ b/tests/pylintrc
@@ -0,0 +1,12 @@
+# Source: opencv/platforms/scripts/pylintrc
+
+[MESSAGES CONTROL]
+
+# Disable all to choose the Tests one by one
+disable=all
+
+# Tests
+enable=bad-indentation,       # Used when an unexpected number of indentation’s tabulations or spaces has been found.
+       mixed-indentation,     # Used when there are some mixed tabs and spaces in a module.
+       unnecessary-semicolon, # Used when a statement is ended by a semi-colon (”;”), which isn’t necessary.
+       unused-variable        # Used when a variable is defined but not used. (Use _var to ignore var).
diff --git a/travis_config.sh b/travis_config.sh
index 7bbfec68..366d35ad 100644
--- a/travis_config.sh
+++ b/travis_config.sh
@@ -50,7 +50,7 @@ if [ -n "$IS_OSX" ]; then
     function generate_ffmpeg_formula {
         local FF="ffmpeg"
         local LFF="ffmpeg_opencv"
-        local FF_FORMULA; FF_FORMULA=$(brew formula "$FF")
+        local FF_FORMULA; FF_FORMULA=$(brew formula "${FF}${FFMPEG_FORMULA_VERSION}")
         local LFF_FORMULA; LFF_FORMULA="$(dirname "$FF_FORMULA")/${LFF}.rb"
 
         local REGENERATE
@@ -70,8 +70,9 @@ if [ -n "$IS_OSX" ]; then
         if [ -n "$REGENERATE" ]; then
             echo "Regenerating custom ffmpeg formula"
             # Bottle block syntax: https://docs.brew.sh/Bottles#bottle-dsl-domain-specific-language
+            # FfmpegAT4 is a class in ffmpeg@4 formula
             perl -wpe 'BEGIN {our ($found_blank, $bottle_block);}
-                if (/(^class )(Ffmpeg)(\s.*)/) {$_=$1.$2."Opencv".$3."\n"; next;}
+                if (/(^class )(FfmpegAT4)(\s.*)/) {$_=$1."FfmpegOpencv".$3."\n"; next;}
                 if (!$found_blank && /^$/) {$_.="conflicts_with \"ffmpeg\"\n\n"; $found_blank=1; next;}
                 if (!$bottle_block && /^\s*bottle do$/) { $bottle_block=1; next; }
                 if ($bottle_block) { if (/^\s*end\s*$/) { $bottle_block=0} elsif (/^\s*sha256\s/) {$_=""} next; }
@@ -97,11 +98,6 @@ function pre_build {
 
   if [ -n "$IS_OSX" ]; then
     brew install lapack
-  else
-    # epel-release need for aarch64 to get openblas packages
-    yum install -y lapack-devel epel-release && yum install -y openblas-devel
-    cp /usr/include/lapacke/lapacke*.h /usr/include/
-    curl https://raw.githubusercontent.com/xianyi/OpenBLAS/v0.3.3/cblas.h -o /usr/include/cblas.h
   fi
 
   if [ -n "$IS_OSX" ]; then
@@ -111,34 +107,14 @@ function pre_build {
     CACHE_STAGE=
     export HOMEBREW_NO_AUTO_UPDATE=1
 
-    #after the cache stage, all bottles and Homebrew metadata should be already cached locally
-    # if [ -n "$CACHE_STAGE" ]; then
-    #     brew update
-    #     generate_ffmpeg_formula
-    #     brew_add_local_bottles
-    # fi
-
     echo 'Installing FFmpeg'
 
-    # if [ -n "$CACHE_STAGE" ]; then
-    #     brew_install_and_cache_within_time_limit ffmpeg_opencv || { [ $? -gt 1 ] && return 2 || return 0; }
-    # else
-        brew update
-        generate_ffmpeg_formula
-        brew_add_local_bottles
-        # brew unlink python@2
-        brew install --build-bottle ffmpeg_opencv
-    # fi
-
-    # echo 'Installing qt5'
-
-    # if [ -n "$CACHE_STAGE" ]; then
-    #    echo "Qt5 has bottle, no caching needed"
-    # else
-    #    brew switch qt 5.13.2
-    #    brew pin qt
-    #    export PATH="/usr/local/opt/qt/bin:$PATH"
-    # fi
+    brew update
+    generate_ffmpeg_formula
+    brew_add_local_bottles
+    brew install --build-bottle ffmpeg_opencv
+    # It needs when we use not the latest ffmpeg formula
+    brew link ffmpeg_opencv
 
     if [ -n "$CACHE_STAGE" ]; then
         brew_go_bootstrap_mode 0
@@ -160,37 +136,37 @@ function run_tests {
 
     PYTHON=python$PYTHON_VERSION
 
-    if [ -n "$IS_OSX" ]; then
-      echo "Running for OS X"
-
-      cd ../tests
-      $PYTHON get_build_info.py
-
-      cd ../opencv/
-      export OPENCV_TEST_DATA_PATH=../opencv_extra/testdata
-    else
-      echo "Running for linux"
-
-      if [ $PYTHON == "python3.6" ]; then
-        $PYTHON -m pip install -U numpy==1.19.4
-      fi
-      cd /io/tests
-      $PYTHON get_build_info.py
+    echo "Running for linux"
 
-      cd /io/opencv
-      export OPENCV_TEST_DATA_PATH=/io/opencv_extra/testdata
+    if [ $PYTHON == "python3.6" ]; then
+      $PYTHON -m pip install -U numpy==1.19.4
     fi
+    cd /io/tests
+    $PYTHON get_build_info.py
+
+    cd /io/opencv
+    export OPENCV_TEST_DATA_PATH=/io/opencv_extra/testdata
 
     test_wheels
+    pylint_test
 }
 
 function test_wheels {
 
-    echo "Starting tests..."
+    echo "Starting OpenCV tests..."
 
     #Test package
     $PYTHON modules/python/test/test.py -v --repo .
 }
 
+function pylint_test {
+
+    echo "Starting Pylint tests..."
+
+    $PYTHON -m pip install pylint==2.12.2
+    cd /io/tests
+    $PYTHON -m pylint /io/opencv/samples/python/squares.py
+}
+
 export PS4='+(${BASH_SOURCE}:${LINENO}): ${FUNCNAME[0]:+${FUNCNAME[0]}(): }'
 set -x