diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
deleted file mode 100644
index f3cba11..0000000
--- a/.github/workflows/ci.yml
+++ /dev/null
@@ -1,47 +0,0 @@
-# Adapted from https://github.com/TYPO3GmbH/blog/blob/master/.github/workflows/ci.yml
-name: CI
-
-on: [ pull_request ]
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-
-    strategy:
-      fail-fast: false
-      matrix:
-        typo3: [ ^11.5, ^12.3 ]
-        php: [ '8.1' ]
-        include:
-          - typo3: ^11.5
-            php: '7.4'
-          - typo3: ^11.5
-            php: '8.0'
-
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v2
-
-      - name: Set up PHP version ${{ matrix.php }}
-        uses: shivammathur/setup-php@v2
-        with:
-          php-version: ${{ matrix.php }}
-
-      - name: Environment Check
-        run: |
-          php --version
-          composer --version
-
-      - name: Validate composer.json and composer.lock
-        run: composer validate
-
-      - name: Install dependencies with typo3/cms-core:${{ matrix.typo3 }}
-        run: |
-          composer require typo3/cms-core:${{ matrix.typo3 }} --no-progress
-          git checkout composer.json
-
-      - name: Lint PHP
-        run: composer ci:php:lint
-
-      - name: php-cs-fixer
-        run: composer ci:php:fixer
diff --git a/.github/workflows/typo3_11.yml b/.github/workflows/typo3_11.yml
new file mode 100644
index 0000000..1825c7f
--- /dev/null
+++ b/.github/workflows/typo3_11.yml
@@ -0,0 +1,47 @@
+name: Test video_shariff against TYPO3 11
+
+on: [pull_request]
+
+jobs:
+  CGL:
+    name: Coding Style
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Validate composer.json and composer.lock
+        run: Build/Scripts/runTests.sh -t 11 -p 8.1 -s composer -e 'validate'
+
+      - name: Install testing system
+        run: Build/Scripts/runTests.sh -t 11 -p 8.1 -s composerInstall
+
+      - name: Lint PHP
+        run: Build/Scripts/runTests.sh -t 11 -p 8.1 -s lint
+
+      - name: Validate code against CGL
+        run: Build/Scripts/runTests.sh -t 11 -p 8.1 -s cgl -n
+
+  testing:
+    name: PHP ${{ matrix.php }} Unit and Functional Tests
+    needs: CGL
+
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+
+      matrix:
+        php: [ '7.4', '8.0', '8.1' ]
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Install testing system
+        run: Build/Scripts/runTests.sh -t 11 -p ${{ matrix.php }} -s composerInstall
+
+      - name: Functional Tests with mariadb and mysqli
+        run: Build/Scripts/runTests.sh -t 11 -p ${{ matrix.php }} -d mariadb -a mysqli -s functional
diff --git a/.github/workflows/typo3_12.yml b/.github/workflows/typo3_12.yml
new file mode 100644
index 0000000..2215020
--- /dev/null
+++ b/.github/workflows/typo3_12.yml
@@ -0,0 +1,47 @@
+name: Test video_shariff against TYPO3 12
+
+on: [pull_request]
+
+jobs:
+  CGL:
+    name: Coding Style
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Validate composer.json and composer.lock
+        run: Build/Scripts/runTests.sh -t 12 -p 8.1 -s composer -e 'validate'
+
+      - name: Install testing system
+        run: Build/Scripts/runTests.sh -t 12 -p 8.1 -s composerInstall
+
+      - name: Lint PHP
+        run: Build/Scripts/runTests.sh -t 12 -p 8.1 -s lint
+
+      - name: Validate code against CGL
+        run: Build/Scripts/runTests.sh -t 12 -p 8.1 -s cgl -n
+
+  testing:
+    name: PHP ${{ matrix.php }} Unit and Functional Tests
+    needs: CGL
+
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+
+      matrix:
+        php: [ '8.1', '8.2' ]
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Install testing system
+        run: Build/Scripts/runTests.sh -t 12 -p ${{ matrix.php }} -s composerInstall
+
+      - name: Functional Tests with mariadb and mysqli
+        run: Build/Scripts/runTests.sh -t 12 -p ${{ matrix.php }} -d mariadb -a mysqli -s functional
diff --git a/.gitignore b/.gitignore
index fc37fd3..9ff89ea 100644
--- a/.gitignore
+++ b/.gitignore
@@ -26,11 +26,11 @@ nbproject
 
 # Temporary files and folders
 /.cache
+.phpunit.cache/
 .php_cs.cache
 .php-cs-fixer.cache
 .sass-cache
 .session
 *.log
-
 # Ignore composer stuff
 /composer.lock
diff --git a/Build/Scripts/runTests.sh b/Build/Scripts/runTests.sh
new file mode 100755
index 0000000..cdb1cbc
--- /dev/null
+++ b/Build/Scripts/runTests.sh
@@ -0,0 +1,488 @@
+#!/usr/bin/env bash
+
+#
+# TYPO3 core test runner based on docker and docker-compose.
+#
+
+# Function to write a .env file in Build/testing-docker
+# This is read by docker-compose and vars defined here are
+# used in Build/testing-docker/docker-compose.yml
+setUpDockerComposeDotEnv() {
+    # Delete possibly existing local .env file if exists
+    [ -e .env ] && rm .env
+    # Set up a new .env file for docker-compose
+    {
+        echo "COMPOSE_PROJECT_NAME=local"
+        # To prevent access rights of files created by the testing, the docker image later
+        # runs with the same user that is currently executing the script. docker-compose can't
+        # use $UID directly itself since it is a shell variable and not an env variable, so
+        # we have to set it explicitly here.
+        echo "HOST_UID=`id -u`"
+        # Your local user
+        echo "ROOT_DIR=${ROOT_DIR}"
+        echo "HOST_USER=${USER}"
+        echo "TEST_FILE=${TEST_FILE}"
+        echo "TYPO3_VERSION=${TYPO3_VERSION}"
+        echo "PHP_XDEBUG_ON=${PHP_XDEBUG_ON}"
+        echo "PHP_XDEBUG_PORT=${PHP_XDEBUG_PORT}"
+        echo "DOCKER_PHP_IMAGE=${DOCKER_PHP_IMAGE}"
+        echo "EXTRA_TEST_OPTIONS=${EXTRA_TEST_OPTIONS}"
+        echo "SCRIPT_VERBOSE=${SCRIPT_VERBOSE}"
+        echo "CGLCHECK_DRY_RUN=${CGLCHECK_DRY_RUN}"
+        echo "DATABASE_DRIVER=${DATABASE_DRIVER}"
+        echo "MARIADB_VERSION=${MARIADB_VERSION}"
+        echo "MYSQL_VERSION=${MYSQL_VERSION}"
+        echo "POSTGRES_VERSION=${POSTGRES_VERSION}"
+        echo "USED_XDEBUG_MODES=${USED_XDEBUG_MODES}"
+        echo "IMAGE_PREFIX=${IMAGE_PREFIX}"
+    } > .env
+}
+
+# Options -a and -d depend on each other. The function
+# validates input combinations and sets defaults.
+handleDbmsAndDriverOptions() {
+    case ${DBMS} in
+        mysql|mariadb)
+            [ -z "${DATABASE_DRIVER}" ] && DATABASE_DRIVER="mysqli"
+            if [ "${DATABASE_DRIVER}" != "mysqli" ] && [ "${DATABASE_DRIVER}" != "pdo_mysql" ]; then
+                echo "Invalid option -a ${DATABASE_DRIVER} with -d ${DBMS}" >&2
+                echo >&2
+                echo "call \"./Build/Scripts/runTests.sh -h\" to display help and valid options" >&2
+                exit 1
+            fi
+            ;;
+        postgres|sqlite)
+            if [ -n "${DATABASE_DRIVER}" ]; then
+                echo "Invalid option -a ${DATABASE_DRIVER} with -d ${DBMS}" >&2
+                echo >&2
+                echo "call \"./Build/Scripts/runTests.sh -h\" to display help and valid options" >&2
+                exit 1
+            fi
+            ;;
+    esac
+}
+
+# Load help text into $HELP
+read -r -d '' HELP <<EOF
+jweiland/video-shariff test runner. Execute unit test suite and some other details.
+Also used by github for test execution.
+
+Recommended docker version is >=20.10 for xdebug break pointing to work reliably, and
+a recent docker-compose (tested >=1.21.2) is needed.
+
+Usage: $0 [options] [file]
+
+No arguments: Run all unit tests with PHP 7.4
+
+Options:
+    -s <...>
+        Specifies which test suite to run
+            - cgl: cgl test and fix all php files
+            - clean: clean up build and testing related files
+            - composer: Execute "composer" command, using -e for command arguments pass-through, ex. -e "ci:php:stan"
+            - composerInstall: "composer update", handy if host has no PHP
+            - composerInstallLowest: "composer update", handy if host has no PHP
+            - composerInstallHighest: "composer update", handy if host has no PHP
+            - functional: functional tests
+            - lint: PHP linting
+            - phpstan: phpstan analyze
+            - phpstanGenerateBaseline: regenerate phpstan baseline, handy after phpstan updates
+            - unit: PHP unit tests
+
+    -a <mysqli|pdo_mysql>
+        Only with -s acceptance,functional
+        Specifies to use another driver, following combinations are available:
+            - mysql
+                - mysqli (default)
+                - pdo_mysql
+            - mariadb
+                - mysqli (default)
+                - pdo_mysql
+
+    -d <sqlite|mariadb|mysql|postgres>
+        Only with -s acceptance,functional
+        Specifies on which DBMS tests are performed
+            - sqlite: (default) use sqlite
+            - mariadb: use mariadb
+            - mysql: use mysql
+            - postgres: use postgres
+
+    -i <10.2|10.3|10.4|10.5|10.6|10.7>
+        Only with -d mariadb
+        Specifies on which version of mariadb tests are performed
+            - 10.2 (default)
+            - 10.3
+            - 10.4
+            - 10.5
+            - 10.6
+            - 10.7
+
+    -j <5.5|5.6|5.7|8.0>
+        Only with -d mysql
+        Specifies on which version of mysql tests are performed
+            - 5.5 (default)
+            - 5.6
+            - 5.7
+            - 8.0
+
+    -k <10|11|12|13|14>
+        Only with -d postgres
+        Specifies on which version of postgres tests are performed
+            - 10 (default)
+            - 11
+            - 12
+            - 13
+            - 14
+
+    -p <7.4|8.0|8.1|8.2>
+        Specifies the PHP minor version to be used
+            - 7.4 (default): use PHP 7.4
+            - 8.0: use PHP 8.0
+            - 8.1: use PHP 8.1
+            - 8.2: use PHP 8.2
+
+    -t <11|12>
+        Only with -s composerUpdate
+        Specifies the TYPO3 core major version to be used
+            - 11 (default): use TYPO3 core v11
+            - 12: use TYPO3 core v12
+
+    -e "<composer, phpunit or codeception options>"
+        Only with -s functional|unit|composer
+        Additional options to send to phpunit (unit & functional tests) or codeception (acceptance
+        tests). For phpunit, options starting with "--" must be added after options starting with "-".
+        Example -e "-v --filter canRetrieveValueWithGP" to enable verbose output AND filter tests
+        named "canRetrieveValueWithGP"
+
+    -x
+        Only with -s functional|unit|acceptance
+        Send information to host instance for test or system under test break points. This is especially
+        useful if a local PhpStorm instance is listening on default xdebug port 9003. A different port
+        can be selected with -y
+
+    -y <port>
+        Send xdebug information to a different port than default 9003 if an IDE like PhpStorm
+        is not listening on default port.
+
+    -z <xdebug modes>
+        Only with -x and -s functional|unit|acceptance
+        This sets the used xdebug modes. Defaults to 'debug,develop'
+
+    -n
+        Only with -s cgl
+        Activate dry-run in CGL check that does not actively change files and only prints broken ones.
+
+    -u
+        Update existing typo3/core-testing-*:latest docker images. Maintenance call to docker pull latest
+        versions of the main php images. The images are updated once in a while and only the youngest
+        ones are supported by core testing. Use this if weird test errors occur. Also removes obsolete
+        image versions of typo3/core-testing-*.
+    -v
+        Enable verbose script output. Shows variables and docker commands.
+
+    -h
+        Show this help.
+
+Examples:
+    # Run unit tests using PHP 7.4
+    ./Build/Scripts/runTests.sh -s unit
+EOF
+
+# Test if docker-compose exists, else exit out with error
+if ! type "docker-compose" > /dev/null; then
+  echo "This script relies on docker and docker-compose. Please install" >&2
+  exit 1
+fi
+
+# Go to the directory this script is located, so everything else is relative
+# to this dir, no matter from where this script is called.
+THIS_SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null && pwd )"
+cd "$THIS_SCRIPT_DIR" || exit 1
+
+# Go to directory that contains the local docker-compose.yml file
+cd ../testing-docker || exit 1
+
+# Option defaults
+if ! command -v realpath &> /dev/null; then
+  echo "This script works best with realpath installed" >&2
+  ROOT_DIR="${PWD}/../../"
+else
+  ROOT_DIR=`realpath ${PWD}/../../`
+fi
+
+TEST_SUITE=""
+DBMS="sqlite"
+PHP_VERSION="7.4"
+TYPO3_VERSION="11"
+PHP_XDEBUG_ON=0
+PHP_XDEBUG_PORT=9003
+EXTRA_TEST_OPTIONS=""
+SCRIPT_VERBOSE=0
+CGLCHECK_DRY_RUN=""
+DATABASE_DRIVER=""
+MARIADB_VERSION="10.2"
+MYSQL_VERSION="5.5"
+POSTGRES_VERSION="10"
+USED_XDEBUG_MODES="debug,develop"
+#@todo the $$ would add the current process id to the name, keeping as plan b
+#PROJECT_NAME="runTests-$(basename $(dirname $ROOT_DIR))-$(basename $ROOT_DIR)-$$"
+PROJECT_NAME="runTests-$(basename $(dirname $ROOT_DIR))-$(basename $ROOT_DIR)"
+PROJECT_NAME="${PROJECT_NAME//[[:blank:]]/}"
+echo $PROJECT_NAME
+
+# Option parsing
+# Reset in case getopts has been used previously in the shell
+OPTIND=1
+# Array for invalid options
+INVALID_OPTIONS=();
+# Simple option parsing based on getopts (! not getopt)
+while getopts ":s:a:d:i:j:k:p:t:e:xy:z:nhuv" OPT; do
+    case ${OPT} in
+        s)
+            TEST_SUITE=${OPTARG}
+            ;;
+        a)
+            DATABASE_DRIVER=${OPTARG}
+            ;;
+        d)
+            DBMS=${OPTARG}
+            ;;
+        i)
+            MARIADB_VERSION=${OPTARG}
+            if ! [[ ${MARIADB_VERSION} =~ ^(10.2|10.3|10.4|10.5|10.6|10.7)$ ]]; then
+                INVALID_OPTIONS+=("${OPTARG}")
+            fi
+            ;;
+        j)
+            MYSQL_VERSION=${OPTARG}
+            if ! [[ ${MYSQL_VERSION} =~ ^(5.5|5.6|5.7|8.0)$ ]]; then
+                INVALID_OPTIONS+=("${OPTARG}")
+            fi
+            ;;
+        k)
+            POSTGRES_VERSION=${OPTARG}
+            if ! [[ ${POSTGRES_VERSION} =~ ^(10|11|12|13|14)$ ]]; then
+                INVALID_OPTIONS+=("${OPTARG}")
+            fi
+            ;;
+        p)
+            PHP_VERSION=${OPTARG}
+            if ! [[ ${PHP_VERSION} =~ ^(7.4|8.0|8.1|8.2)$ ]]; then
+                INVALID_OPTIONS+=("p ${OPTARG}")
+            fi
+            ;;
+        t)
+            TYPO3_VERSION=${OPTARG}
+            if ! [[ ${TYPO3_VERSION} =~ ^(11|12)$ ]]; then
+                INVALID_OPTIONS+=("p ${OPTARG}")
+            fi
+            ;;
+        e)
+            EXTRA_TEST_OPTIONS=${OPTARG}
+            ;;
+        x)
+            PHP_XDEBUG_ON=1
+            ;;
+        y)
+            PHP_XDEBUG_PORT=${OPTARG}
+            ;;
+        z)
+            USED_XDEBUG_MODES=${OPTARG}
+            ;;
+        h)
+            echo "${HELP}"
+            exit 0
+            ;;
+        n)
+            CGLCHECK_DRY_RUN="-n"
+            ;;
+        u)
+            TEST_SUITE=update
+            ;;
+        v)
+            SCRIPT_VERBOSE=1
+            ;;
+        \?)
+            INVALID_OPTIONS+=(${OPTARG})
+            ;;
+        :)
+            INVALID_OPTIONS+=(${OPTARG})
+            ;;
+    esac
+done
+
+# Exit on invalid options
+if [ ${#INVALID_OPTIONS[@]} -ne 0 ]; then
+    echo "Invalid option(s):" >&2
+    for I in "${INVALID_OPTIONS[@]}"; do
+        echo "-"${I} >&2
+    done
+    echo >&2
+    echo "${HELP}" >&2
+    exit 1
+fi
+
+# Move "7.2" to "php72", the latter is the docker container name
+DOCKER_PHP_IMAGE=`echo "php${PHP_VERSION}" | sed -e 's/\.//'`
+
+# Set $1 to first mass argument, this is the optional test file or test directory to execute
+shift $((OPTIND - 1))
+TEST_FILE=${1}
+if [ -n "${1}" ]; then
+    TEST_FILE="Web/typo3conf/ext/video_shariff/${1}"
+    if [ "${TYPO3_VERSION}" == "12" ]; then
+        TEST_FILE="./${1}"
+    fi
+fi
+
+if [ ${SCRIPT_VERBOSE} -eq 1 ]; then
+    set -x
+fi
+
+if [ -z ${TEST_SUITE} ]; then
+    echo "${HELP}"
+    exit 0
+fi
+
+# Suite execution
+case ${TEST_SUITE} in
+    cgl)
+        # Active dry-run for cgl needs not "-n" but specific options
+        if [[ ! -z ${CGLCHECK_DRY_RUN} ]]; then
+            CGLCHECK_DRY_RUN="--dry-run --diff"
+        fi
+        setUpDockerComposeDotEnv
+        docker-compose run cgl
+        SUITE_EXIT_CODE=$?
+        docker-compose down
+        ;;
+    clean)
+        rm -rf \
+          ../../var/ \
+          ../../.cache \
+          ../../composer.lock \
+          ../../.Build/ \
+          ../../Tests/Acceptance/Support/_generated/ \
+          ../../composer.json.testing
+        ;;
+    composer)
+        setUpDockerComposeDotEnv
+        docker-compose run composer
+        SUITE_EXIT_CODE=$?
+        docker-compose down
+        ;;
+    composerInstall)
+        setUpDockerComposeDotEnv
+        cp ../../composer.json ../../composer.json.orig
+        if [ -f "../../composer.json.testing" ]; then
+            cp ../../composer.json ../../composer.json.orig
+        fi
+        docker-compose run composer_install
+        cp ../../composer.json ../../composer.json.testing
+        mv ../../composer.json.orig ../../composer.json
+        SUITE_EXIT_CODE=$?
+        docker-compose down
+        ;;
+    composerInstallLowest)
+        setUpDockerComposeDotEnv
+        cp ../../composer.json ../../composer.json.orig
+        if [ -f "../../composer.json.testing" ]; then
+            cp ../../composer.json ../../composer.json.orig
+        fi
+        docker-compose run composer_install_lowest
+        cp ../../composer.json ../../composer.json.testing
+        mv ../../composer.json.orig ../../composer.json
+        SUITE_EXIT_CODE=$?
+        docker-compose down
+        ;;
+    composerInstallHighest)
+        setUpDockerComposeDotEnv
+        cp ../../composer.json ../../composer.json.orig
+        if [ -f "../../composer.json.testing" ]; then
+            cp ../../composer.json ../../composer.json.orig
+        fi
+        docker-compose run composer_install_highest
+        cp ../../composer.json ../../composer.json.testing
+        mv ../../composer.json.orig ../../composer.json
+        SUITE_EXIT_CODE=$?
+        docker-compose down
+        ;;
+    coveralls)
+        setUpDockerComposeDotEnv
+        docker-compose run coveralls
+        SUITE_EXIT_CODE=$?
+        docker-compose down
+        ;;
+    functional)
+        handleDbmsAndDriverOptions
+        setUpDockerComposeDotEnv
+        case ${DBMS} in
+            mariadb)
+                echo "Using driver: ${DATABASE_DRIVER}"
+                docker-compose run functional_mariadb
+                SUITE_EXIT_CODE=$?
+                ;;
+            mysql)
+                echo "Using driver: ${DATABASE_DRIVER}"
+                docker-compose run functional_mysql
+                SUITE_EXIT_CODE=$?
+                ;;
+            postgres)
+                docker-compose run functional_postgres
+                SUITE_EXIT_CODE=$?
+                ;;
+            sqlite)
+                # sqlite has a tmpfs as Web/typo3temp/var/tests/functional-sqlite-dbs/
+                # Since docker is executed as root (yay!), the path to this dir is owned by
+                # root if docker creates it. Thank you, docker. We create the path beforehand
+                # to avoid permission issues.
+                mkdir -p ${ROOT_DIR}/Web/typo3temp/var/tests/functional-sqlite-dbs/
+                docker-compose run functional_sqlite
+                SUITE_EXIT_CODE=$?
+                ;;
+            *)
+                echo "Invalid -d option argument ${DBMS}" >&2
+                echo >&2
+                echo "${HELP}" >&2
+                exit 1
+        esac
+        docker-compose down
+        ;;
+    lint)
+        setUpDockerComposeDotEnv
+        docker-compose run lint
+        SUITE_EXIT_CODE=$?
+        docker-compose down
+        ;;
+    phpstan)
+        setUpDockerComposeDotEnv
+        docker-compose run phpstan
+        SUITE_EXIT_CODE=$?
+        docker-compose down
+        ;;
+    phpstanGenerateBaseline)
+        setUpDockerComposeDotEnv
+        docker-compose run phpstan_generate_baseline
+        SUITE_EXIT_CODE=$?
+        docker-compose down
+        ;;
+    unit)
+        setUpDockerComposeDotEnv
+        docker-compose run unit
+        SUITE_EXIT_CODE=$?
+        docker-compose down
+        ;;
+    update)
+        # pull typo3/core-testing-*:latest versions of those ones that exist locally
+        docker images typo3/core-testing-*:latest --format "{{.Repository}}:latest" | xargs -I {} docker pull {}
+        # remove "dangling" typo3/core-testing-* images (those tagged as <none>)
+        docker images typo3/core-testing-* --filter "dangling=true" --format "{{.ID}}" | xargs -I {} docker rmi {}
+        ;;
+    *)
+        echo "Invalid -s option argument ${TEST_SUITE}" >&2
+        echo >&2
+        echo "${HELP}" >&2
+        exit 1
+esac
+
+exit $SUITE_EXIT_CODE
diff --git a/Build/php-cs-fixer/config.php b/Build/php-cs-fixer/php-cs-fixer.php
similarity index 74%
rename from Build/php-cs-fixer/config.php
rename to Build/php-cs-fixer/php-cs-fixer.php
index 53e342b..73f8818 100644
--- a/Build/php-cs-fixer/config.php
+++ b/Build/php-cs-fixer/php-cs-fixer.php
@@ -1,39 +1,28 @@
 <?php
 
-declare(strict_types=1);
-
-/*
- * This file is part of the package jweiland/video-shariff.
- *
- * For the full copyright and license information, please read the
- * LICENSE file that was distributed with this source code.
- */
-
-if (PHP_SAPI !== 'cli') {
-    die('This script supports command line usage only. Please check your command.');
-}
-
-$headerComment = <<<COMMENT
-This file is part of the package jweiland/video-shariff.
+$config = \TYPO3\CodingStandards\CsFixerConfig::create();
+$config->setHeader(
+    'This file is part of the package jweiland/video-shariff.
 
 For the full copyright and license information, please read the
-LICENSE file that was distributed with this source code.
-COMMENT;
-
-$finder = PhpCsFixer\Finder::create()
-    ->name('*.php')
-    ->exclude('.build')
-    ->in(__DIR__);
-
-return (new \PhpCsFixer\Config())
-    ->setFinder($finder)
+LICENSE file that was distributed with this source code.',
+    true
+);
+$config->setFinder(
+    (new PhpCsFixer\Finder())
+        ->in(realpath(__DIR__ . '/../../'))
+        ->ignoreVCSIgnored(true)
+        ->notPath('/^.Build\//')
+        ->notPath('/^Build\/php-cs-fixer\/php-cs-fixer.php/')
+        ->notPath('/^Build\/phpunit\/(UnitTestsBootstrap|FunctionalTestsBootstrap).php/')
+        ->notPath('/^Configuration\//')
+        ->notPath('/^Documentation\//')
+        ->notName('/^ext_(emconf|localconf|tables).php/')
+)
     ->setRiskyAllowed(true)
     ->setRules([
         '@DoctrineAnnotation' => true,
         '@PER' => true,
-        'header_comment' => [
-            'header' => $headerComment,
-        ],
         'array_syntax' => ['syntax' => 'short'],
         'blank_line_after_opening_tag' => true,
         'braces' => ['allow_single_line_closure' => true],
@@ -42,11 +31,9 @@
         'concat_space' => ['spacing' => 'one'],
         'declare_equal_normalize' => ['space' => 'none'],
         'dir_constant' => true,
-        'function_to_constant' => ['functions' => ['get_called_class', 'get_class', 'get_class_this', 'php_sapi_name', 'phpversion', 'pi']],
         'function_typehint_space' => true,
         'lowercase_cast' => true,
         'method_argument_space' => ['on_multiline' => 'ensure_fully_multiline'],
-        'modernize_strpos' => false,
         'modernize_types_casting' => true,
         'native_function_casing' => true,
         'new_with_braces' => true,
@@ -86,3 +73,4 @@
         'whitespace_after_comma_in_array' => ['ensure_single_space' => true],
         'yoda_style' => ['equal' => false, 'identical' => false, 'less_and_greater' => false],
     ]);
+return $config;
diff --git a/Build/phpunit/FunctionalTests11.xml b/Build/phpunit/FunctionalTests11.xml
new file mode 100644
index 0000000..cee2ea4
--- /dev/null
+++ b/Build/phpunit/FunctionalTests11.xml
@@ -0,0 +1,47 @@
+<!--
+    Boilerplate for a functional test suite setup.
+
+    This file is loosely maintained within TYPO3 testing-framework, extensions
+    are encouraged to not use it directly, but to copy it to an own place,
+    for instance Build/FunctionalTests.xml.
+    Note FunctionalTestsBootstrap.php should be copied along the way.
+
+    Functional tests should extend \TYPO3\TestingFramework\Core\Tests\FunctionalTestCase,
+    take a look at this class for further documentation on how to run the suite.
+
+    TYPO3 CMS functional test suite also needs phpunit bootstrap code, the
+    file is located next to this .xml as FunctionalTestsBootstrap.php
+
+    @todo: Make phpunit v9 compatible, compare with core Build/phpunit/ version.
+-->
+<phpunit
+    backupGlobals="true"
+    bootstrap="FunctionalTestsBootstrap.php"
+    cacheResult="false"
+    colors="true"
+    convertErrorsToExceptions="true"
+    convertWarningsToExceptions="true"
+    convertDeprecationsToExceptions="true"
+    convertNoticesToExceptions="true"
+    forceCoversAnnotation="false"
+    stopOnError="false"
+    stopOnFailure="false"
+    stopOnIncomplete="false"
+    stopOnSkipped="false"
+    verbose="false"
+    beStrictAboutTestsThatDoNotTestAnything="false"
+    failOnWarning="true"
+    failOnRisky="true"
+>
+    <testsuites>
+        <testsuite name="Functional tests">
+            <directory>../../Tests/Functional/</directory>
+        </testsuite>
+    </testsuites>
+    <php>
+        <const name="TYPO3_TESTING_FUNCTIONAL_REMOVE_ERROR_HANDLER" value="true" />
+        <ini name="display_errors" value="1" />
+        <ini name="error_reporting" value="E_ALL" />
+        <env name="TYPO3_CONTEXT" value="Testing" />
+    </php>
+</phpunit>
diff --git a/Build/phpunit/FunctionalTests12.xml b/Build/phpunit/FunctionalTests12.xml
new file mode 100644
index 0000000..cc83787
--- /dev/null
+++ b/Build/phpunit/FunctionalTests12.xml
@@ -0,0 +1,44 @@
+<?xml version="1.0"?>
+<!--
+    Boilerplate for a functional test suite setup.
+
+    This file is loosely maintained within TYPO3 testing-framework, extensions
+    are encouraged to not use it directly, but to copy it to an own place,
+    for instance Build/FunctionalTests.xml.
+    Note FunctionalTestsBootstrap.php should be copied along the way.
+
+    Functional tests should extend \TYPO3\TestingFramework\Core\Tests\FunctionalTestCase,
+    take a look at this class for further documentation on how to run the suite.
+
+    TYPO3 CMS functional test suite also needs phpunit bootstrap code, the
+    file is located next to this .xml as FunctionalTestsBootstrap.php
+
+    @todo: Make phpunit v9 compatible, compare with core Build/phpunit/ version.
+-->
+<phpunit
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.0/phpunit.xsd"
+    backupGlobals="true"
+    bootstrap="FunctionalTestsBootstrap.php"
+    cacheResult="false"
+    colors="true"
+    stopOnError="false"
+    stopOnFailure="false"
+    stopOnIncomplete="false"
+    stopOnSkipped="false"
+    beStrictAboutTestsThatDoNotTestAnything="false"
+    failOnWarning="true"
+    failOnRisky="true"
+>
+    <testsuites>
+        <testsuite name="Functional tests">
+            <directory>../../Tests/Functional/</directory>
+        </testsuite>
+    </testsuites>
+    <php>
+        <const name="TYPO3_TESTING_FUNCTIONAL_REMOVE_ERROR_HANDLER" value="true"/>
+        <ini name="display_errors" value="1"/>
+        <ini name="error_reporting" value="E_ALL"/>
+        <env name="TYPO3_CONTEXT" value="Testing"/>
+    </php>
+</phpunit>
diff --git a/Build/phpunit/FunctionalTestsBootstrap.php b/Build/phpunit/FunctionalTestsBootstrap.php
new file mode 100644
index 0000000..a95bc52
--- /dev/null
+++ b/Build/phpunit/FunctionalTestsBootstrap.php
@@ -0,0 +1,30 @@
+<?php
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+/**
+ * Boilerplate for a functional test phpunit boostrap file.
+ *
+ * This file is loosely maintained within TYPO3 testing-framework, extensions
+ * are encouraged to not use it directly, but to copy it to an own place,
+ * usually in parallel to a FunctionalTests.xml file.
+ *
+ * This file is defined in FunctionalTests.xml and called by phpunit
+ * before instantiating the test suites.
+ */
+(static function () {
+    $testbase = new \TYPO3\TestingFramework\Core\Testbase();
+    $testbase->defineOriginalRootPath();
+    $testbase->createDirectory(ORIGINAL_ROOT . 'typo3temp/var/tests');
+    $testbase->createDirectory(ORIGINAL_ROOT . 'typo3temp/var/transient');
+})();
diff --git a/Build/phpunit/UnitTests11.xml b/Build/phpunit/UnitTests11.xml
new file mode 100644
index 0000000..8f1bf61
--- /dev/null
+++ b/Build/phpunit/UnitTests11.xml
@@ -0,0 +1,47 @@
+<!--
+    Boilerplate for a unit test suite setup.
+
+    This file is loosely maintained within TYPO3 testing-framework, extensions
+    are encouraged to not use it directly, but to copy it to an own place,
+    for instance Build/UnitTests.xml.
+    Note UnitTestsBootstrap.php should be copied along the way.
+
+    Functional tests should extend \TYPO3\TestingFramework\Core\Tests\FunctionalTestCase,
+    take a look at this class for further documentation on how to run the suite.
+
+    TYPO3 CMS functional test suite also needs phpunit bootstrap code, the
+    file is located next to this .xml as FunctionalTestsBootstrap.php
+
+    @todo: Make phpunit v9 compatible, add the xml things to phpunit tag, see core versions.
+-->
+<phpunit
+    backupGlobals="true"
+    bootstrap="UnitTestsBootstrap.php"
+    cacheResult="false"
+    colors="true"
+    convertDeprecationsToExceptions="true"
+    convertErrorsToExceptions="true"
+    convertWarningsToExceptions="true"
+    convertNoticesToExceptions="true"
+    forceCoversAnnotation="false"
+    processIsolation="false"
+    stopOnError="false"
+    stopOnFailure="false"
+    stopOnIncomplete="false"
+    stopOnSkipped="false"
+    verbose="false"
+    beStrictAboutTestsThatDoNotTestAnything="false"
+    failOnWarning="true"
+    failOnRisky="true"
+>
+    <testsuites>
+        <testsuite name="Unit tests">
+            <directory>../../Tests/Unit/</directory>
+        </testsuite>
+    </testsuites>
+    <php>
+        <ini name="display_errors" value="1" />
+        <ini name="error_reporting" value="E_ALL"/>
+        <env name="TYPO3_CONTEXT" value="Testing" />
+    </php>
+</phpunit>
diff --git a/Build/phpunit/UnitTests12.xml b/Build/phpunit/UnitTests12.xml
new file mode 100644
index 0000000..f43f9a3
--- /dev/null
+++ b/Build/phpunit/UnitTests12.xml
@@ -0,0 +1,46 @@
+<?xml version="1.0"?>
+<!--
+    Boilerplate for a unit test suite setup.
+
+    This file is loosely maintained within TYPO3 testing-framework, extensions
+    are encouraged to not use it directly, but to copy it to an own place,
+    for instance Build/UnitTests.xml.
+    Note UnitTestsBootstrap.php should be copied along the way.
+
+    Functional tests should extend \TYPO3\TestingFramework\Core\Tests\FunctionalTestCase,
+    take a look at this class for further documentation on how to run the suite.
+
+    TYPO3 CMS functional test suite also needs phpunit bootstrap code, the
+    file is located next to this .xml as FunctionalTestsBootstrap.php
+
+    @todo: Make phpunit v9 compatible, add the xml things to phpunit tag, see core versions.
+-->
+<phpunit
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.0/phpunit.xsd"
+    backupGlobals="true"
+    bootstrap="UnitTestsBootstrap.php"
+    cacheResult="false"
+    colors="true"
+    processIsolation="false"
+    stopOnError="false"
+    stopOnFailure="false"
+    stopOnIncomplete="false"
+    stopOnSkipped="false"
+    beStrictAboutTestsThatDoNotTestAnything="false"
+    failOnWarning="true"
+    failOnRisky="true"
+    cacheDirectory=".phpunit.cache"
+    requireCoverageMetadata="false"
+>
+    <testsuites>
+        <testsuite name="Unit tests">
+            <directory>../../Tests/Unit/</directory>
+        </testsuite>
+    </testsuites>
+    <php>
+        <ini name="display_errors" value="1"/>
+        <ini name="error_reporting" value="E_ALL"/>
+        <env name="TYPO3_CONTEXT" value="Testing"/>
+    </php>
+</phpunit>
diff --git a/Build/phpunit/UnitTestsBootstrap.php b/Build/phpunit/UnitTestsBootstrap.php
new file mode 100644
index 0000000..a4ca910
--- /dev/null
+++ b/Build/phpunit/UnitTestsBootstrap.php
@@ -0,0 +1,67 @@
+<?php
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+call_user_func(function () {
+    $testbase = new \TYPO3\TestingFramework\Core\Testbase();
+
+    // These if's are for core testing (package typo3/cms) only. cms-composer-installer does
+    // not create the autoload-include.php file that sets these env vars and sets composer
+    // mode to true. testing-framework can not be used without composer anyway, so it is safe
+    // to do this here. This way it does not matter if 'bin/phpunit' or 'vendor/phpunit/phpunit/phpunit'
+    // is called to run the tests since the 'relative to entry script' path calculation within
+    // SystemEnvironmentBuilder is not used. However, the binary must be called from the document
+    // root since getWebRoot() uses 'getcwd()'.
+    if (!getenv('TYPO3_PATH_ROOT')) {
+        putenv('TYPO3_PATH_ROOT=' . rtrim($testbase->getWebRoot(), '/'));
+    }
+    if (!getenv('TYPO3_PATH_WEB')) {
+        putenv('TYPO3_PATH_WEB=' . rtrim($testbase->getWebRoot(), '/'));
+    }
+
+    $testbase->defineSitePath();
+
+    $composerMode = defined('TYPO3_COMPOSER_MODE') && TYPO3_COMPOSER_MODE === true;
+    $requestType = \TYPO3\CMS\Core\Core\SystemEnvironmentBuilder::REQUESTTYPE_BE | \TYPO3\CMS\Core\Core\SystemEnvironmentBuilder::REQUESTTYPE_CLI;
+    \TYPO3\CMS\Core\Core\SystemEnvironmentBuilder::run(0, $requestType, $composerMode);
+
+    $testbase->createDirectory(\TYPO3\CMS\Core\Core\Environment::getPublicPath() . '/typo3conf/ext');
+    $testbase->createDirectory(\TYPO3\CMS\Core\Core\Environment::getPublicPath() . '/typo3temp/assets');
+    $testbase->createDirectory(\TYPO3\CMS\Core\Core\Environment::getPublicPath() . '/typo3temp/var/tests');
+    $testbase->createDirectory(\TYPO3\CMS\Core\Core\Environment::getPublicPath() . '/typo3temp/var/transient');
+
+    // Retrieve an instance of class loader and inject to core bootstrap
+    $classLoader = require $testbase->getPackagesPath() . '/autoload.php';
+    \TYPO3\CMS\Core\Core\Bootstrap::initializeClassLoader($classLoader);
+
+    // Initialize default TYPO3_CONF_VARS
+    $configurationManager = new \TYPO3\CMS\Core\Configuration\ConfigurationManager();
+    $GLOBALS['TYPO3_CONF_VARS'] = $configurationManager->getDefaultConfiguration();
+
+    $cache = new \TYPO3\CMS\Core\Cache\Frontend\PhpFrontend(
+        'core',
+        new \TYPO3\CMS\Core\Cache\Backend\NullBackend('production', []),
+    );
+    // Set all packages to active
+    $packageManager = \TYPO3\CMS\Core\Core\Bootstrap::createPackageManager(
+        \TYPO3\CMS\Core\Package\UnitTestPackageManager::class,
+        \TYPO3\CMS\Core\Core\Bootstrap::createPackageCache($cache)
+    );
+
+    \TYPO3\CMS\Core\Utility\GeneralUtility::setSingletonInstance(\TYPO3\CMS\Core\Package\PackageManager::class, $packageManager);
+    \TYPO3\CMS\Core\Utility\ExtensionManagementUtility::setPackageManager($packageManager);
+
+    $testbase->dumpClassLoadingInformation();
+
+    \TYPO3\CMS\Core\Utility\GeneralUtility::purgeInstances();
+});
diff --git a/Build/testing-docker/docker-compose.yml b/Build/testing-docker/docker-compose.yml
new file mode 100644
index 0000000..11095c7
--- /dev/null
+++ b/Build/testing-docker/docker-compose.yml
@@ -0,0 +1,370 @@
+version: '2.3'
+services:
+  #---------------------------------------------------------------------------------------------------------------------
+  # additional services needed for functional tests to be linked, e.g. databases
+  #---------------------------------------------------------------------------------------------------------------------
+  mysql:
+    image: mysql:${MYSQL_VERSION}
+    environment:
+      MYSQL_ROOT_PASSWORD: funcp
+    tmpfs:
+      - /var/lib/mysql/:rw,noexec,nosuid
+
+  mariadb:
+    image: mariadb:${MARIADB_VERSION}
+    environment:
+      MYSQL_ROOT_PASSWORD: funcp
+    tmpfs:
+      - /var/lib/mysql/:rw,noexec,nosuid
+
+  postgres:
+    image: postgres:${POSTGRES_VERSION}-alpine
+    environment:
+      POSTGRES_PASSWORD: funcp
+      POSTGRES_USER: ${HOST_USER}
+    tmpfs:
+      - /var/lib/postgresql/data:rw,noexec,nosuid
+
+  #---------------------------------------------------------------------------------------------------------------------
+  # composer related services
+  #---------------------------------------------------------------------------------------------------------------------
+  composer:
+    image: typo3/core-testing-${DOCKER_PHP_IMAGE}:latest
+    user: "${HOST_UID}"
+    volumes:
+      - ${ROOT_DIR}:${ROOT_DIR}
+    working_dir: ${ROOT_DIR}
+    environment:
+      COMPOSER_HOME: ".cache/composer-home"
+      COMPOSER_CACHE_DIR: ".cache/composer"
+    command: >
+      /bin/sh -c "
+        if [ ${SCRIPT_VERBOSE} -eq 1 ]; then
+          set -x
+        fi
+        php -v | grep '^PHP';
+        composer ${EXTRA_TEST_OPTIONS};
+      "
+
+  composer_install:
+    image: typo3/core-testing-${DOCKER_PHP_IMAGE}:latest
+    user: "${HOST_UID}"
+    volumes:
+      - ${ROOT_DIR}:${ROOT_DIR}
+    working_dir: ${ROOT_DIR}
+    environment:
+      COMPOSER_HOME: ".cache/composer-home"
+      COMPOSER_CACHE_DIR: ".cache/composer"
+    command: >
+      /bin/sh -c "
+        if [ ${SCRIPT_VERBOSE} -eq 1 ]; then
+          set -x
+        fi
+        php -v | grep '^PHP';
+        if [ ${TYPO3_VERSION} -eq 11 ]; then
+          composer require --no-ansi --no-interaction --no-progress --no-install typo3/cms-core:^11.5.24
+        fi
+        if [ ${TYPO3_VERSION} -eq 12 ]; then
+          composer require --no-ansi --no-interaction --no-progress --no-install typo3/cms-core:^12.2
+        fi
+        composer install --no-progress;
+      "
+
+  composer_install_lowest:
+    image: typo3/core-testing-${DOCKER_PHP_IMAGE}:latest
+    user: "${HOST_UID}"
+    volumes:
+      - ${ROOT_DIR}:${ROOT_DIR}
+    working_dir: ${ROOT_DIR}
+    environment:
+      COMPOSER_HOME: ".cache/composer-home"
+      COMPOSER_CACHE_DIR: ".cache/composer"
+    command: >
+      /bin/sh -c "
+        if [ ${SCRIPT_VERBOSE} -eq 1 ]; then
+          set -x
+        fi
+        php -v | grep '^PHP';
+        if [ ${TYPO3_VERSION} -eq 11 ]; then
+          composer require --no-ansi --no-interaction --no-progress --no-install typo3/cms-core:^11.5.24
+        fi
+        if [ ${TYPO3_VERSION} -eq 12 ]; then
+          composer require --no-ansi --no-interaction --no-progress --no-install typo3/cms-core:^12.0
+        fi
+        composer update --no-ansi --no-interaction --no-progress --with-dependencies --prefer-lowest;
+        composer show;
+      "
+
+  composer_install_highest:
+    image: typo3/core-testing-${DOCKER_PHP_IMAGE}:latest
+    user: "${HOST_UID}"
+    volumes:
+      - ${ROOT_DIR}:${ROOT_DIR}
+    working_dir: ${ROOT_DIR}
+    environment:
+      COMPOSER_HOME: ".cache/composer-home"
+      COMPOSER_CACHE_DIR: ".cache/composer"
+    command: >
+      /bin/sh -c "
+        if [ ${SCRIPT_VERBOSE} -eq 1 ]; then
+          set -x
+        fi
+        if [ ${TYPO3_VERSION} -eq 11 ]; then
+          composer require --no-ansi --no-interaction --no-progress --no-install typo3/cms-core:^11.5.24
+        fi
+        if [ ${TYPO3_VERSION} -eq 12 ]; then
+          composer require --no-ansi --no-interaction --no-progress --no-install typo3/cms-core:^12.2
+        fi
+        composer update --no-progress --no-interaction;
+        composer show;
+      "
+
+  #---------------------------------------------------------------------------------------------------------------------
+  # Unit tests
+  #---------------------------------------------------------------------------------------------------------------------
+  unit:
+    image: typo3/core-testing-${DOCKER_PHP_IMAGE}:latest
+    user: "${HOST_UID}"
+    volumes:
+      - ${ROOT_DIR}:${ROOT_DIR}
+    working_dir: ${ROOT_DIR}
+    extra_hosts:
+      - "host.docker.internal:host-gateway"
+    command: >
+      /bin/sh -c "
+        if [ ${SCRIPT_VERBOSE} -eq 1 ]; then
+          set -x
+        fi
+        php -v | grep '^PHP';
+        if [ ${PHP_XDEBUG_ON} -eq 0 ]; then
+          XDEBUG_MODE=\"off\" .Build/bin/phpunit -c Build/phpunit/UnitTests${TYPO3_VERSION}.xml ${EXTRA_TEST_OPTIONS} ${TEST_FILE};
+        else
+          XDEBUG_MODE=\"debug,develop\" XDEBUG_TRIGGER=\"foo\" XDEBUG_CONFIG=\"client_host=host.docker.internal\" .Build/bin/phpunit -c Build/phpunit/UnitTests${TYPO3_VERSION}.xml ${EXTRA_TEST_OPTIONS} ${TEST_FILE};
+        fi
+      "
+
+  lint:
+    image: typo3/core-testing-${DOCKER_PHP_IMAGE}:latest
+    user: "${HOST_UID}"
+    volumes:
+      - ${ROOT_DIR}:${ROOT_DIR}
+    working_dir: ${ROOT_DIR}
+    command: >
+      /bin/sh -c "
+        if [ ${SCRIPT_VERBOSE} -eq 1 ]; then
+          set -x
+        fi
+        php -v | grep '^PHP';
+        find . -name \\*.php ! -path "./.Build/\\*" -print0 | xargs -0 -n1 -P4 php -dxdebug.mode=off -l >/dev/null
+      "
+
+  #---------------------------------------------------------------------------------------------------------------------
+  # functional tests against different dbms
+  #---------------------------------------------------------------------------------------------------------------------
+  functional_sqlite:
+    image: typo3/core-testing-${DOCKER_PHP_IMAGE}:latest
+    user: "${HOST_UID}"
+    volumes:
+      - ${ROOT_DIR}:${ROOT_DIR}
+    tmpfs:
+      - ${ROOT_DIR}/Web/typo3temp/var/tests/functional-sqlite-dbs/:rw,noexec,nosuid,uid=${HOST_UID}
+    environment:
+      typo3DatabaseDriver: pdo_sqlite
+    working_dir: ${ROOT_DIR}
+    extra_hosts:
+      - "host.docker.internal:host-gateway"
+    command: >
+      /bin/sh -c "
+        if [ ${SCRIPT_VERBOSE} -eq 1 ]; then
+          set -x
+        fi
+        php -v | grep '^PHP';
+        if [ ${PHP_XDEBUG_ON} -eq 0 ]; then
+          XDEBUG_MODE=\"off\" .Build/bin/phpunit -c Build/phpunit/FunctionalTests${TYPO3_VERSION}.xml ${EXTRA_TEST_OPTIONS} --exclude-group not-sqlite ${TEST_FILE};
+        else
+          XDEBUG_MODE=\"debug,develop\" XDEBUG_TRIGGER=\"foo\" XDEBUG_CONFIG=\"client_host=host.docker.internal\" .Build/bin/phpunit -c Build/phpunit/FunctionalTests${TYPO3_VERSION}.xml ${EXTRA_TEST_OPTIONS} --exclude-group not-sqlite ${TEST_FILE};
+        fi
+      "
+
+  functional_postgres:
+    image: typo3/core-testing-${DOCKER_PHP_IMAGE}:latest
+    user: "${HOST_UID}"
+    links:
+      - postgres
+    volumes:
+      - ${ROOT_DIR}:${ROOT_DIR}
+    environment:
+      typo3DatabaseDriver: pdo_pgsql
+      typo3DatabaseName: bamboo
+      typo3DatabaseUsername: ${HOST_USER}
+      typo3DatabaseHost: postgres
+      typo3DatabasePassword: funcp
+    working_dir: ${ROOT_DIR}
+    extra_hosts:
+      - "host.docker.internal:host-gateway"
+    command: >
+      /bin/sh -c "
+        if [ ${SCRIPT_VERBOSE} -eq 1 ]; then
+          set -x
+        fi
+        echo Waiting for database start...;
+        while ! nc -z postgres 5432; do
+          sleep 1;
+        done;
+        echo Database is up;
+        php -v | grep '^PHP';
+        if [ ${PHP_XDEBUG_ON} -eq 0 ]; then
+          XDEBUG_MODE=\"off\" .Build/bin/phpunit -c Build/phpunit/FunctionalTests${TYPO3_VERSION}.xml ${EXTRA_TEST_OPTIONS} --exclude-group not-postgres ${TEST_FILE};
+        else
+          XDEBUG_MODE=\"debug,develop\" XDEBUG_TRIGGER=\"foo\" XDEBUG_CONFIG=\"client_host=host.docker.internal\" .Build/bin/phpunit -c Build/phpunit/FunctionalTests${TYPO3_VERSION}.xml ${EXTRA_TEST_OPTIONS} --exclude-group not-postgres ${TEST_FILE};
+        fi
+      "
+
+  functional_mysql:
+    image: typo3/core-testing-${DOCKER_PHP_IMAGE}:latest
+    user: "${HOST_UID}"
+    links:
+      - mysql
+    volumes:
+      - ${ROOT_DIR}:${ROOT_DIR}
+    environment:
+      typo3DatabaseDriver: "${DATABASE_DRIVER}"
+      typo3DatabaseName: func_test
+      typo3DatabaseUsername: root
+      typo3DatabasePassword: funcp
+      typo3DatabaseHost: mysql
+    working_dir: ${ROOT_DIR}
+    extra_hosts:
+      - "host.docker.internal:host-gateway"
+    command: >
+      /bin/sh -c "
+        if [ ${SCRIPT_VERBOSE} -eq 1 ]; then
+          set -x
+        fi
+        echo Waiting for database start...;
+        while ! nc -z mysql 3306; do
+          sleep 1;
+        done;
+        echo Database is up;
+        php -v | grep '^PHP';
+        if [ ${PHP_XDEBUG_ON} -eq 0 ]; then
+          XDEBUG_MODE=\"off\" .Build/bin/phpunit -c Build/phpunit/FunctionalTests${TYPO3_VERSION}.xml ${EXTRA_TEST_OPTIONS} ${TEST_FILE};
+        else
+          XDEBUG_MODE=\"debug,develop\" XDEBUG_TRIGGER=\"foo\" XDEBUG_CONFIG=\"client_host=host.docker.internal\" .Build/bin/phpunit -c Build/phpunit/FunctionalTests${TYPO3_VERSION}.xml ${EXTRA_TEST_OPTIONS} ${TEST_FILE};
+        fi
+      "
+
+  functional_mariadb:
+    image: typo3/core-testing-${DOCKER_PHP_IMAGE}:latest
+    user: "${HOST_UID}"
+    links:
+      - mariadb
+    volumes:
+      - ${ROOT_DIR}:${ROOT_DIR}
+    environment:
+      typo3DatabaseDriver: "${DATABASE_DRIVER}"
+      typo3DatabaseName: func_test
+      typo3DatabaseUsername: root
+      typo3DatabasePassword: funcp
+      typo3DatabaseHost: mariadb
+    working_dir: ${ROOT_DIR}/
+    extra_hosts:
+      - "host.docker.internal:host-gateway"
+    command: >
+      /bin/sh -c "
+        if [ ${SCRIPT_VERBOSE} -eq 1 ]; then
+          set -x
+        fi
+        echo Waiting for database start...;
+        while ! nc -z mariadb 3306; do
+          sleep 1;
+        done;
+        echo Database is up;
+        php -v | grep '^PHP';
+        if [ ${PHP_XDEBUG_ON} -eq 0 ]; then
+          XDEBUG_MODE=\"off\" .Build/bin/phpunit -c Build/phpunit/FunctionalTests${TYPO3_VERSION}.xml ${EXTRA_TEST_OPTIONS} ${TEST_FILE};
+        else
+          XDEBUG_MODE=\"debug,develop\" XDEBUG_TRIGGER=\"foo\" XDEBUG_CONFIG=\"client_host=host.docker.internal\" .Build/bin/phpunit -c Build/phpunit/FunctionalTests${TYPO3_VERSION}.xml ${EXTRA_TEST_OPTIONS} ${TEST_FILE};
+        fi
+      "
+
+  #---------------------------------------------------------------------------------------------------------------------
+  # code quality tools
+  #---------------------------------------------------------------------------------------------------------------------
+  cgl:
+    image: typo3/core-testing-${DOCKER_PHP_IMAGE}:latest
+    user: "${HOST_UID}"
+    volumes:
+      - ${ROOT_DIR}:${ROOT_DIR}
+    working_dir: ${ROOT_DIR}
+    extra_hosts:
+      - "host.docker.internal:host-gateway"
+    command: >
+      /bin/sh -c "
+        if [ ${SCRIPT_VERBOSE} -eq 1 ]; then
+          set -x
+        fi
+        php -v | grep '^PHP';
+        if [ ${PHP_XDEBUG_ON} -eq 0 ]; then
+          php -dxdebug.mode=off .Build/bin/php-cs-fixer fix -v ${CGLCHECK_DRY_RUN} --config=Build/php-cs-fixer/php-cs-fixer.php --using-cache=no .
+        else
+          XDEBUG_MODE=\"debug,develop\" XDEBUG_TRIGGER=\"foo\" XDEBUG_CONFIG=\"client_host=host.docker.internal\" PHP_CS_FIXER_ALLOW_XDEBUG=1 .Build/bin/php-cs-fixer fix -v ${CGLCHECK_DRY_RUN} --config=Build/php-cs-fixer/php-cs-fixer.php --using-cache=no .
+        fi
+      "
+
+  phpstan:
+    image: typo3/core-testing-${DOCKER_PHP_IMAGE}:latest
+    user: "${HOST_UID}"
+    volumes:
+      - ${ROOT_DIR}:${ROOT_DIR}
+    working_dir: ${ROOT_DIR}
+    command: >
+      /bin/sh -c "
+        if [ ${SCRIPT_VERBOSE} -eq 1 ]; then
+          set -x
+        fi
+        mkdir -p .Build/.cache
+        php -v | grep '^PHP';
+        php -dxdebug.mode=off .Build/bin/phpstan analyze -c Build/phpstan/phpstan.neon --no-progress
+      "
+
+  phpstan_generate_baseline:
+    image: typo3/core-testing-${DOCKER_PHP_IMAGE}:latest
+    user: "${HOST_UID}"
+    volumes:
+      - ${ROOT_DIR}:${ROOT_DIR}
+    working_dir: ${ROOT_DIR}
+    command: >
+      /bin/sh -c "
+        if [ ${SCRIPT_VERBOSE} -eq 1 ]; then
+          set -x
+        fi
+        mkdir -p .Build/.cache
+        php -v | grep '^PHP';
+        php -dxdebug.mode=off .Build/bin/phpstan analyze -c Build/phpstan/phpstan.neon --generate-baseline=Build/phpstan/phpstan-baseline.neon
+      "
+
+  composer_update:
+    image: typo3/core-testing-${DOCKER_PHP_IMAGE}:latest
+    user: "${HOST_UID}"
+    volumes:
+      - ${ROOT_DIR}:${ROOT_DIR}
+    working_dir: ${ROOT_DIR}
+    environment:
+      COMPOSER_CACHE_DIR: ".cache/composer"
+    command: >
+      /bin/sh -c "
+        if [ ${SCRIPT_VERBOSE} -eq 1 ]; then
+          set -x
+        fi
+        php -v | grep '^PHP';
+        if [ ${TYPO3_VERSION} -eq 11 ]; then
+              composer req --dev --no-update typo3/cms-composer-installers:^3.0 typo3/cms-backend:^11.5 typo3/cms-recordlist:^11.5 typo3/cms-frontend:^11.5 typo3/cms-extbase:^11.5 typo3/cms-fluid:^11.5 typo3/cms-install:^11.5 phpunit/phpunit:^9.6.4
+              composer req typo3/cms-core:^11.5 --no-update
+        fi
+        if [ ${TYPO3_VERSION} -eq 12 ]; then
+              composer req --dev --no-update typo3/cms-composer-installers:^5.0 typo3/cms-backend:~12.4 typo3/cms-recordlist:~12.4 typo3/cms-frontend:~12.4 typo3/cms-extbase:~12.4 typo3/cms-fluid:~12.4 typo3/cms-install:~12.4 phpunit/phpunit:^10
+              composer req typo3/cms-core:~12.4 -W --no-update
+        fi
+        composer update --no-progress --no-interaction;
+      "
diff --git a/Classes/Traits/GetCoreFileReferenceTrait.php b/Classes/Traits/GetCoreFileReferenceTrait.php
new file mode 100644
index 0000000..a362069
--- /dev/null
+++ b/Classes/Traits/GetCoreFileReferenceTrait.php
@@ -0,0 +1,30 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the package jweiland/video-shariff.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE file that was distributed with this source code.
+ */
+
+namespace JWeiland\VideoShariff\Traits;
+
+use TYPO3\CMS\Core\Resource\FileReference;
+use TYPO3\CMS\Extbase\Domain\Model\FileReference as ExtbaseFileReference;
+
+trait GetCoreFileReferenceTrait
+{
+    /**
+     * @param FileReference|ExtbaseFileReference $fileReference
+     */
+    protected static function getCoreFileReference($fileReference): FileReference
+    {
+        if ($fileReference instanceof ExtbaseFileReference) {
+            return $fileReference->getOriginalResource();
+        }
+
+        return $fileReference;
+    }
+}
diff --git a/Classes/Traits/GetOnlineMediaHelperTrait.php b/Classes/Traits/GetOnlineMediaHelperTrait.php
new file mode 100644
index 0000000..0c912eb
--- /dev/null
+++ b/Classes/Traits/GetOnlineMediaHelperTrait.php
@@ -0,0 +1,32 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the package jweiland/video-shariff.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE file that was distributed with this source code.
+ */
+
+namespace JWeiland\VideoShariff\Traits;
+
+use TYPO3\CMS\Core\Resource\File;
+use TYPO3\CMS\Core\Resource\OnlineMedia\Helpers\OnlineMediaHelperInterface;
+use TYPO3\CMS\Core\Resource\OnlineMedia\Helpers\OnlineMediaHelperRegistry;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+
+trait GetOnlineMediaHelperTrait
+{
+    protected static function getOnlineMediaHelper(File $file): ?OnlineMediaHelperInterface
+    {
+        $onlineMediaHelper = self::getOnlineMediaHelperRegistry()->getOnlineMediaHelper($file);
+
+        return $onlineMediaHelper ?: null;
+    }
+
+    protected static function getOnlineMediaHelperRegistry(): OnlineMediaHelperRegistry
+    {
+        return GeneralUtility::makeInstance(OnlineMediaHelperRegistry::class);
+    }
+}
diff --git a/Classes/Traits/GetTypoScriptSetupTrait.php b/Classes/Traits/GetTypoScriptSetupTrait.php
new file mode 100644
index 0000000..fa22d6f
--- /dev/null
+++ b/Classes/Traits/GetTypoScriptSetupTrait.php
@@ -0,0 +1,42 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the package jweiland/video-shariff.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE file that was distributed with this source code.
+ */
+
+namespace JWeiland\VideoShariff\Traits;
+
+use TYPO3\CMS\Core\Information\Typo3Version;
+use TYPO3\CMS\Core\TypoScript\FrontendTypoScript;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Frontend\Controller\TypoScriptFrontendController;
+
+trait GetTypoScriptSetupTrait
+{
+    protected static function getTypoScriptSetup(): array
+    {
+        $typoScript = [];
+
+        $typo3Version = GeneralUtility::makeInstance(Typo3Version::class);
+        if (version_compare($typo3Version->getBranch(), '12.1', '>')) {
+            $frontendTypoScript = $GLOBALS['TYPO3_REQUEST']->getAttribute('frontend.typoscript');
+            if ($frontendTypoScript instanceof FrontendTypoScript) {
+                $typoScript = $frontendTypoScript->getSetupArray();
+            }
+        } else {
+            $typoScript = self::getTypoScriptFrontendController()->tmpl->setup;
+        }
+
+        return $typoScript;
+    }
+
+    protected static function getTypoScriptFrontendController(): TypoScriptFrontendController
+    {
+        return $GLOBALS['TSFE'];
+    }
+}
diff --git a/Classes/ViewHelpers/Format/SecondsToISO8601ViewHelper.php b/Classes/ViewHelpers/Format/SecondsToISO8601ViewHelper.php
index 84e3a3a..3246b04 100644
--- a/Classes/ViewHelpers/Format/SecondsToISO8601ViewHelper.php
+++ b/Classes/ViewHelpers/Format/SecondsToISO8601ViewHelper.php
@@ -15,17 +15,13 @@
 use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractViewHelper;
 
 /**
- * Class SecondsToISO8601ViewHelper
+ * ViewHelper to convert seconds into ISO 8601 date
  */
 class SecondsToISO8601ViewHelper extends AbstractViewHelper
 {
     /**
-     * Returns the absolute web path to the preview image.
+     * Convert seconds into ISO 8601 date
      *
-     * @param array $arguments
-     * @param \Closure $renderChildrenClosure
-     * @param RenderingContextInterface $renderingContext
-     * @return string
      * @throws \UnexpectedValueException
      */
     public static function renderStatic(
@@ -34,29 +30,27 @@ public static function renderStatic(
         RenderingContextInterface $renderingContext
     ): string {
         $seconds = (int)$renderChildrenClosure();
-        $intervals = [
-            'D' => 60 * 60 * 24,
-            'H' => 60 * 60,
-            'M' => 60,
-            'S' => 1,
-        ];
-
-        $pt = 'P';
-        $result = '';
-        foreach ($intervals as $tag => $divisor) {
-            $qty = floor($seconds / $divisor);
-            if (!$qty && $result === '') {
-                $pt = 'T';
-                continue;
-            }
-            $seconds -= $qty * $divisor;
-            $result .= $qty . $tag;
+        if ($seconds === 0) {
+            return 'P0S';
         }
 
-        if ($result === '') {
-            $result = '0S';
-        }
+        return self::formatSecondsIntoISO8601($seconds);
+    }
 
-        return $pt . $result;
+    protected static function formatSecondsIntoISO8601(int $seconds): string
+    {
+        $days = floor($seconds / (3600 * 24));
+        $hours = floor(($seconds % (3600 * 24)) / 3600);
+        $minutes = floor(($seconds % 3600) / 60);
+        $seconds = $seconds % 60;
+
+        return sprintf(
+            'P%s%s%s%s%s',
+            $days ? $days . 'D' : '',
+            $hours || $minutes || $seconds ? 'T' : '',
+            $hours ? $hours . 'H' : '',
+            $minutes ? $minutes . 'M' : '',
+            $seconds ? $seconds . 'S' : ''
+        );
     }
 }
diff --git a/Classes/ViewHelpers/VideoCreationDateViewHelper.php b/Classes/ViewHelpers/VideoCreationDateViewHelper.php
index f0cfee4..e8ec933 100644
--- a/Classes/ViewHelpers/VideoCreationDateViewHelper.php
+++ b/Classes/ViewHelpers/VideoCreationDateViewHelper.php
@@ -11,21 +11,19 @@
 
 namespace JWeiland\VideoShariff\ViewHelpers;
 
-use TYPO3\CMS\Core\Resource\FileInterface;
+use JWeiland\VideoShariff\Traits\GetCoreFileReferenceTrait;
 use TYPO3\CMS\Core\Resource\FileReference;
-use TYPO3\CMS\Extbase\Domain\Model\AbstractFileFolder;
 use TYPO3\CMS\Extbase\Domain\Model\FileReference as ExtbaseFileReference;
 use TYPO3Fluid\Fluid\Core\Rendering\RenderingContextInterface;
 use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractViewHelper;
 
 /**
- * Class VideoCreationDateViewHelper
+ * ViewHelper to extract date values from given FileReference
  */
 class VideoCreationDateViewHelper extends AbstractViewHelper
 {
-    /**
-     * Initialize arguments
-     */
+    use GetCoreFileReferenceTrait;
+
     public function initializeArguments(): void
     {
         $this->registerArgument(
@@ -36,12 +34,8 @@ public function initializeArguments(): void
     }
 
     /**
-     * Returns the absolute web path to the preview image.
+     * Returns date of given FileReference
      *
-     * @param array $arguments
-     * @param \Closure $renderChildrenClosure
-     * @param RenderingContextInterface $renderingContext
-     * @return int
      * @throws \UnexpectedValueException
      */
     public static function renderStatic(
@@ -49,27 +43,29 @@ public static function renderStatic(
         \Closure $renderChildrenClosure,
         RenderingContextInterface $renderingContext
     ): int {
-        /** @var FileReference|ExtbaseFileReference $fileReference */
-        $fileReference = $arguments['fileReference'];
-
-        // get Resource Object (non ExtBase version)
-        if (is_callable([$fileReference, 'getOriginalResource'])) {
-            // We have a domain model, so we need to fetch the FAL resource object from there
-            $fileReference = $fileReference->getOriginalResource();
-        }
-        if (!($fileReference instanceof FileInterface || $fileReference instanceof AbstractFileFolder)) {
-            throw new \UnexpectedValueException('Supplied file object type ' . get_class($fileReference) . ' must be FileInterface or AbstractFileFolder.', 1454252193);
+        // Early return, if object is not allowed
+        if (
+            $arguments['fileReference'] instanceof FileReference
+            || $arguments['fileReference'] instanceof ExtbaseFileReference
+        ) {
+            $fileReference = self::getCoreFileReference($arguments['fileReference']);
+        } else {
+            return 0;
         }
+
         $file = $fileReference->getOriginalFile();
         if ($file->getProperty('content_creation_date')) {
             return $file->getProperty('content_creation_date');
         }
+
         if ($file->getProperty('creation_date')) {
             return $file->getProperty('creation_date');
         }
+
         if ($file->getProperty('crdate')) {
             return $file->getProperty('crdate');
         }
+
         return 0;
     }
 }
diff --git a/Classes/ViewHelpers/VideoPreviewImageViewHelper.php b/Classes/ViewHelpers/VideoPreviewImageViewHelper.php
index 5c09f53..8e1b3b8 100644
--- a/Classes/ViewHelpers/VideoPreviewImageViewHelper.php
+++ b/Classes/ViewHelpers/VideoPreviewImageViewHelper.php
@@ -11,23 +11,27 @@
 
 namespace JWeiland\VideoShariff\ViewHelpers;
 
+use JWeiland\VideoShariff\Traits\GetCoreFileReferenceTrait;
+use JWeiland\VideoShariff\Traits\GetOnlineMediaHelperTrait;
+use JWeiland\VideoShariff\Traits\GetTypoScriptSetupTrait;
 use TYPO3\CMS\Core\Core\Environment;
-use TYPO3\CMS\Core\Resource\FileInterface;
 use TYPO3\CMS\Core\Resource\FileReference;
-use TYPO3\CMS\Core\Resource\OnlineMedia\Helpers\OnlineMediaHelperRegistry;
+use TYPO3\CMS\Core\Resource\OnlineMedia\Helpers\OnlineMediaHelperInterface;
 use TYPO3\CMS\Core\Utility\GeneralUtility;
-use TYPO3\CMS\Core\Utility\PathUtility;
-use TYPO3\CMS\Extbase\Domain\Model\AbstractFileFolder;
 use TYPO3\CMS\Extbase\Domain\Model\FileReference as ExtbaseFileReference;
-use TYPO3\CMS\Frontend\Controller\TypoScriptFrontendController;
 use TYPO3Fluid\Fluid\Core\Rendering\RenderingContextInterface;
 use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractViewHelper;
 
 /**
- * Class VideoPreviewImageViewHelper
+ * ViewHelper to get preview image for video. If video is unavailable or private
+ * return a fallback image configured in lib.video_shariff.defaultThumbnail
  */
 class VideoPreviewImageViewHelper extends AbstractViewHelper
 {
+    use GetCoreFileReferenceTrait;
+    use GetOnlineMediaHelperTrait;
+    use GetTypoScriptSetupTrait;
+
     public function initializeArguments(): void
     {
         $this->registerArgument(
@@ -47,35 +51,33 @@ public static function renderStatic(
         \Closure $renderChildrenClosure,
         RenderingContextInterface $renderingContext
     ): string {
-        $publicDirectory = Environment::getPublicPath() . '/typo3temp/assets/tx_videoshariff/';
-        /** @var FileReference|ExtbaseFileReference $fileReference */
-        $fileReference = $arguments['fileReference'];
-
-        // get Resource Object (non ExtBase version)
-        if (is_callable([$fileReference, 'getOriginalResource'])) {
-            // We have a domain model, so we need to fetch the FAL resource object from there
-            $fileReference = $fileReference->getOriginalResource();
-        }
+        $publicFile = '';
 
-        if (!($fileReference instanceof FileInterface || $fileReference instanceof AbstractFileFolder)) {
-            throw new \UnexpectedValueException(
-                'Supplied file object type ' . get_class($fileReference) . ' must be FileInterface or AbstractFileFolder.',
-                1454252193
-            );
+        // Early return, if object is not allowed
+        if (
+            $arguments['fileReference'] instanceof FileReference
+            || $arguments['fileReference'] instanceof ExtbaseFileReference
+        ) {
+            $fileReference = self::getCoreFileReference($arguments['fileReference']);
+        } else {
+            return $publicFile;
         }
 
         $file = $fileReference->getOriginalFile();
 
-        $helper = self::getOnlineMediaHelperRegistry()->getOnlineMediaHelper($file);
-        if ($helper) {
+        $helper = self::getOnlineMediaHelper($file);
+        if ($helper instanceof OnlineMediaHelperInterface) {
             $privateFile = $helper->getPreviewImage($file);
+            $publicDirectory = Environment::getPublicPath() . '/typo3temp/assets/tx_videoshariff/';
             $publicFile = $publicDirectory . substr($privateFile, strrpos($privateFile, '/') + 1);
+
             // check if file has already been copied
             if (!is_file($publicFile)) {
                 // check if public directory exists
                 if (!is_dir($publicDirectory)) {
                     GeneralUtility::mkdir_deep($publicDirectory);
                 }
+
                 if (is_file($privateFile)) {
                     copy($privateFile, $publicFile);
                 } else {
@@ -83,32 +85,15 @@ public static function renderStatic(
                     $publicFile = static::getDefaultThumbnailFile();
                 }
             }
-        } else {
-            $publicFile = '';
         }
 
         return $publicFile;
     }
 
-    protected static function getTypoScriptFrontendController(): TypoScriptFrontendController
-    {
-        return $GLOBALS['TSFE'];
-    }
-
-    protected static function getOnlineMediaHelperRegistry(): OnlineMediaHelperRegistry
-    {
-        return GeneralUtility::makeInstance(OnlineMediaHelperRegistry::class);
-    }
-
     protected static function getDefaultThumbnailFile(): string
     {
-        // ToDo: Change while removing TYPO3 11 compatibility
-        $filename = static::getTypoScriptFrontendController()->tmpl->setup['lib.']['video_shariff.']['defaultThumbnail'];
-        if (strpos($filename, 'EXT:') === 0) {
-            $file = GeneralUtility::getFileAbsFileName($filename);
-        } else {
-            $file = PathUtility::getAbsoluteWebPath($filename);
-        }
-        return $file;
+        $filename = self::getTypoScriptSetup()['lib.']['video_shariff.']['defaultThumbnail'] ?? '';
+
+        return $filename ? GeneralUtility::getFileAbsFileName($filename) : '';
     }
 }
diff --git a/Classes/ViewHelpers/VideoPublicUrlViewHelper.php b/Classes/ViewHelpers/VideoPublicUrlViewHelper.php
index bfa6abd..6d0d4da 100644
--- a/Classes/ViewHelpers/VideoPublicUrlViewHelper.php
+++ b/Classes/ViewHelpers/VideoPublicUrlViewHelper.php
@@ -11,10 +11,10 @@
 
 namespace JWeiland\VideoShariff\ViewHelpers;
 
-use TYPO3\CMS\Core\Resource\FileInterface;
+use JWeiland\VideoShariff\Traits\GetCoreFileReferenceTrait;
+use JWeiland\VideoShariff\Traits\GetOnlineMediaHelperTrait;
 use TYPO3\CMS\Core\Resource\FileReference;
-use TYPO3\CMS\Core\Resource\OnlineMedia\Helpers\OnlineMediaHelperRegistry;
-use TYPO3\CMS\Extbase\Domain\Model\AbstractFileFolder;
+use TYPO3\CMS\Core\Resource\OnlineMedia\Helpers\OnlineMediaHelperInterface;
 use TYPO3\CMS\Extbase\Domain\Model\FileReference as ExtbaseFileReference;
 use TYPO3Fluid\Fluid\Core\Rendering\RenderingContextInterface;
 use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractViewHelper;
@@ -24,9 +24,9 @@
  */
 class VideoPublicUrlViewHelper extends AbstractViewHelper
 {
-    /**
-     * Initialize arguments
-     */
+    use GetCoreFileReferenceTrait;
+    use GetOnlineMediaHelperTrait;
+
     public function initializeArguments(): void
     {
         $this->registerArgument(
@@ -39,10 +39,6 @@ public function initializeArguments(): void
     /**
      * Returns the absolute web path to the preview image.
      *
-     * @param array $arguments
-     * @param \Closure $renderChildrenClosure
-     * @param RenderingContextInterface $renderingContext
-     * @return string
      * @throws \UnexpectedValueException
      */
     public static function renderStatic(
@@ -50,24 +46,24 @@ public static function renderStatic(
         \Closure $renderChildrenClosure,
         RenderingContextInterface $renderingContext
     ): string {
-        /** @var FileReference|ExtbaseFileReference $fileReference */
-        $fileReference = $arguments['fileReference'];
+        $publicUrl = '';
 
-        // get Resource Object (non ExtBase version)
-        if (is_callable([$fileReference, 'getOriginalResource'])) {
-            // We have a domain model, so we need to fetch the FAL resource object from there
-            $fileReference = $fileReference->getOriginalResource();
-        }
-        if (!($fileReference instanceof FileInterface || $fileReference instanceof AbstractFileFolder)) {
-            throw new \UnexpectedValueException('Supplied file object type ' . get_class($fileReference) . ' must be FileInterface or AbstractFileFolder.', 1454252193);
+        // Early return, if object is not allowed
+        if (
+            $arguments['fileReference'] instanceof FileReference
+            || $arguments['fileReference'] instanceof ExtbaseFileReference
+        ) {
+            $fileReference = self::getCoreFileReference($arguments['fileReference']);
+        } else {
+            return $publicUrl;
         }
+
         $file = $fileReference->getOriginalFile();
-        $helper = OnlineMediaHelperRegistry::getInstance()->getOnlineMediaHelper($file);
-        if ($helper) {
+        $helper = self::getOnlineMediaHelper($file);
+        if ($helper instanceof OnlineMediaHelperInterface) {
             $publicUrl = $helper->getPublicUrl($file);
-        } else {
-            $publicUrl = '';
         }
+
         return $publicUrl;
     }
 }
diff --git a/Tests/Functional/ViewHelpers/Format/SecondsToISO8601ViewHelperTest.php b/Tests/Functional/ViewHelpers/Format/SecondsToISO8601ViewHelperTest.php
new file mode 100644
index 0000000..006e0f0
--- /dev/null
+++ b/Tests/Functional/ViewHelpers/Format/SecondsToISO8601ViewHelperTest.php
@@ -0,0 +1,76 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the package jweiland/video-shariff.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE file that was distributed with this source code.
+ */
+
+namespace JWeiland\VideoShariff\Tests\Functional\ViewHelpers\Format;
+
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Fluid\View\StandaloneView;
+use TYPO3\TestingFramework\Core\Functional\FunctionalTestCase;
+
+/**
+ * Test case.
+ */
+class SecondsToISO8601ViewHelperTest extends FunctionalTestCase
+{
+    protected array $testExtensionsToLoad = [
+        'typo3conf/ext/video_shariff',
+    ];
+
+    protected function setUp(): void
+    {
+        if (!defined('ORIGINAL_ROOT')) {
+            define('ORIGINAL_ROOT', $_ENV['TYPO3_PATH_ROOT']);
+        }
+
+        parent::setUp();
+    }
+
+    public static function secondsDataProvider(): array
+    {
+        return [
+            '0 seconds will return P0S' => [0, 'P0S'],
+            '14 seconds will return PT14S' => [14, 'PT14S'],
+            '59 seconds will return PT59S' => [59, 'PT59S'],
+            '60 seconds will return PT1M' => [60, 'PT1M'],
+            '61 seconds will return PT1M1S' => [61, 'PT1M1S'],
+            '250 seconds will return PT4M10S' => [250, 'PT4M10S'],
+            '3600 seconds will return PT1H' => [3600, 'PT1H'],
+            '3700 seconds will return PT1H1M40S' => [3700, 'PT1H1M40S'],
+            '43200 seconds will return PT12H' => [43200, 'PT12H'],
+            '86400 seconds will return P1D' => [86400, 'P1D'],
+            '86600 seconds will return P1DT3M20S' => [86600, 'P1DT3M20S'],
+        ];
+    }
+
+    /**
+     * @test
+     *
+     * @dataProvider secondsDataProvider
+     */
+    public function formatSecondsToISO8601(int $seconds, string $expected)
+    {
+        $view = GeneralUtility::makeInstance(StandaloneView::class);
+        $view->setTemplateSource(implode(' ', [
+            '<html lang="en" xmlns:f="http://typo3.org/ns/TYPO3/CMS/Fluid/ViewHelpers"',
+            'xmlns:jw="http://typo3.org/ns/JWeiland/VideoShariff/ViewHelpers"',
+            'data-namespace-typo3-fluid="true">',
+            '{seconds -> jw:format.secondsToISO8601()}',
+            '</html>',
+        ]));
+
+        $view->assign('seconds', $seconds);
+
+        self::assertSame(
+            $expected,
+            trim($view->render())
+        );
+    }
+}
diff --git a/Tests/Functional/ViewHelpers/VideoCreationDateViewHelperTest.php b/Tests/Functional/ViewHelpers/VideoCreationDateViewHelperTest.php
new file mode 100644
index 0000000..1d8b4ef
--- /dev/null
+++ b/Tests/Functional/ViewHelpers/VideoCreationDateViewHelperTest.php
@@ -0,0 +1,188 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the package jweiland/video-shariff.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE file that was distributed with this source code.
+ */
+
+namespace JWeiland\VideoShariff\Tests\Functional\ViewHelpers;
+
+use TYPO3\CMS\Core\Resource\File;
+use TYPO3\CMS\Core\Resource\FileReference;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Extbase\Domain\Model\FileReference as ExtbaseFileReference;
+use TYPO3\CMS\Fluid\View\StandaloneView;
+use TYPO3\TestingFramework\Core\Functional\FunctionalTestCase;
+
+/**
+ * Test case.
+ */
+class VideoCreationDateViewHelperTest extends FunctionalTestCase
+{
+    protected array $testExtensionsToLoad = [
+        'typo3conf/ext/video_shariff',
+    ];
+
+    protected function setUp(): void
+    {
+        if (!defined('ORIGINAL_ROOT')) {
+            define('ORIGINAL_ROOT', $_ENV['TYPO3_PATH_ROOT']);
+        }
+
+        parent::setUp();
+    }
+
+    /**
+     * @test
+     */
+    public function videoCreateDateReturnContentCreationDate(): void
+    {
+        $file = $this->createMock(File::class);
+        $file
+            ->expects(self::atLeastOnce())
+            ->method('getUid')
+            ->willReturn(1);
+        $file
+            ->expects(self::atLeastOnce())
+            ->method('getProperty')
+            ->willReturnMap([
+                ['content_creation_date', 1683100800],
+                ['creation_date', 0],
+                ['crdate', 0],
+            ]);
+
+        $coreFileReference = $this->createMock(FileReference::class);
+        $coreFileReference
+            ->expects(self::atLeastOnce())
+            ->method('getOriginalFile')
+            ->willReturn($file);
+
+        $extbaseFileReference = new ExtbaseFileReference();
+        $extbaseFileReference->setOriginalResource($coreFileReference);
+
+        $view = GeneralUtility::makeInstance(StandaloneView::class);
+        $view->setTemplateSource(implode(' ', [
+            '<html lang="en" xmlns:f="http://typo3.org/ns/TYPO3/CMS/Fluid/ViewHelpers"',
+            'xmlns:jw="http://typo3.org/ns/JWeiland/VideoShariff/ViewHelpers"',
+            'data-namespace-typo3-fluid="true">',
+            '{jw:videoCreationDate(fileReference: \'{file}\')}',
+            '</html>',
+        ]));
+
+        $view->assign('file', $coreFileReference);
+        self::assertSame(
+            '1683100800',
+            trim($view->render())
+        );
+
+        $view->assign('file', $extbaseFileReference);
+        self::assertSame(
+            '1683100800',
+            trim($view->render())
+        );
+    }
+
+    /**
+     * @test
+     */
+    public function videoCreateDateReturnCreationDate(): void
+    {
+        $file = $this->createMock(File::class);
+        $file
+            ->expects(self::atLeastOnce())
+            ->method('getUid')
+            ->willReturn(1);
+        $file
+            ->expects(self::atLeastOnce())
+            ->method('getProperty')
+            ->willReturnMap([
+                ['content_creation_date', 0],
+                ['creation_date', 1682928000],
+                ['crdate', 0],
+            ]);
+
+        $coreFileReference = $this->createMock(FileReference::class);
+        $coreFileReference
+            ->expects(self::atLeastOnce())
+            ->method('getOriginalFile')
+            ->willReturn($file);
+
+        $extbaseFileReference = new ExtbaseFileReference();
+        $extbaseFileReference->setOriginalResource($coreFileReference);
+
+        $view = GeneralUtility::makeInstance(StandaloneView::class);
+        $view->setTemplateSource(implode(' ', [
+            '<html lang="en" xmlns:f="http://typo3.org/ns/TYPO3/CMS/Fluid/ViewHelpers"',
+            'xmlns:jw="http://typo3.org/ns/JWeiland/VideoShariff/ViewHelpers"',
+            'data-namespace-typo3-fluid="true">',
+            '{jw:videoCreationDate(fileReference: \'{file}\')}',
+            '</html>',
+        ]));
+
+        $view->assign('file', $coreFileReference);
+        self::assertSame(
+            '1682928000',
+            trim($view->render())
+        );
+
+        $view->assign('file', $extbaseFileReference);
+        self::assertSame(
+            '1682928000',
+            trim($view->render())
+        );
+    }
+
+    /**
+     * @test
+     */
+    public function videoCreateDateReturnCrdate(): void
+    {
+        $file = $this->createMock(File::class);
+        $file
+            ->expects(self::atLeastOnce())
+            ->method('getUid')
+            ->willReturn(1);
+        $file
+            ->expects(self::atLeastOnce())
+            ->method('getProperty')
+            ->willReturnMap([
+                ['content_creation_date', 0],
+                ['creation_date', 0],
+                ['crdate', 1683014400],
+            ]);
+
+        $coreFileReference = $this->createMock(FileReference::class);
+        $coreFileReference
+            ->expects(self::atLeastOnce())
+            ->method('getOriginalFile')
+            ->willReturn($file);
+
+        $extbaseFileReference = new ExtbaseFileReference();
+        $extbaseFileReference->setOriginalResource($coreFileReference);
+
+        $view = GeneralUtility::makeInstance(StandaloneView::class);
+        $view->setTemplateSource(implode(' ', [
+            '<html lang="en" xmlns:f="http://typo3.org/ns/TYPO3/CMS/Fluid/ViewHelpers"',
+            'xmlns:jw="http://typo3.org/ns/JWeiland/VideoShariff/ViewHelpers"',
+            'data-namespace-typo3-fluid="true">',
+            '{jw:videoCreationDate(fileReference: \'{file}\')}',
+            '</html>',
+        ]));
+
+        $view->assign('file', $coreFileReference);
+        self::assertSame(
+            '1683014400',
+            trim($view->render())
+        );
+
+        $view->assign('file', $extbaseFileReference);
+        self::assertSame(
+            '1683014400',
+            trim($view->render())
+        );
+    }
+}
diff --git a/composer.json b/composer.json
index ae795d8..30f17aa 100644
--- a/composer.json
+++ b/composer.json
@@ -21,7 +21,11 @@
 		"typo3/cms-core": "^11.5.23 || ^12.3.0"
 	},
 	"require-dev": {
-		"friendsofphp/php-cs-fixer": "3.14"
+		"sbuerk/typo3-cmscomposerinstallers-testingframework-bridge": "^0.1",
+		"typo3/testing-framework": "^7.0",
+		"phpunit/phpunit": "^9.6",
+		"typo3/coding-standards": "^0.6",
+		"friendsofphp/php-cs-fixer": "^3.14"
 	},
 	"autoload": {
 		"psr-4": {
@@ -29,7 +33,8 @@
 		}
 	},
 	"config": {
-		"vendor-dir": ".build/vendor",
+		"vendor-dir": ".Build/vendor",
+		"bin-dir": ".Build/bin",
 		"allow-plugins": {
 			"typo3/cms-composer-installers": true,
 			"typo3/class-alias-loader": true
@@ -38,20 +43,8 @@
 	"extra": {
 		"typo3/cms": {
 			"extension-key": "video_shariff",
-			"app-dir": ".build",
-			"web-dir": ".build/public"
+			"app-dir": ".Build",
+			"web-dir": ".Build/public"
 		}
-	},
-	"scripts": {
-		"php:fix": ".build/vendor/bin/php-cs-fixer --config=Build/php-cs-fixer/config.php fix Classes",
-		"ci:php:lint": "find *.php Classes Configuration -name '*.php' -print0 | xargs -0 -n 1 -P 4 php -l",
-		"ci:php:fixer": ".build/vendor/bin/php-cs-fixer --config=Build/php-cs-fixer/config.php fix --dry-run -v --show-progress=dots --diff Classes",
-		"link-extension": [
-			"@php -r 'is_dir($extFolder=__DIR__.\"/.build/public/typo3conf/ext/\") || mkdir($extFolder, 0777, true);'",
-			"@php -r 'file_exists($extFolder=__DIR__.\"/.build/public/typo3conf/ext/video_shariff\") || symlink(__DIR__,$extFolder);'"
-		],
-		"post-autoload-dump": [
-			"@link-extension"
-		]
 	}
 }
diff --git a/ext_emconf.php b/ext_emconf.php
index 3a7442a..e20a19f 100644
--- a/ext_emconf.php
+++ b/ext_emconf.php
@@ -1,4 +1,5 @@
 <?php
+
 $EM_CONF[$_EXTKEY] = [
     'title' => 'Video Shariff',
     'description' => 'This extension provides more privacy when embedding videos in frontend.',
@@ -11,9 +12,9 @@
     'constraints' => [
         'depends' => [
             'typo3' => '11.5.23-12.4.99',
-            'fluid_styled_content' => '11.5.23-0.0.0'
+            'fluid_styled_content' => '11.5.23-0.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
-    ]
+    ],
 ];