diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a8999ab7e3..fc34aa47c2 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -6,10 +6,14 @@ on:
       - master
       - feature
       - cibuilds
+    paths-ignore:
+      - ".github/workflows/distro.yml"
   pull_request:
     branches:
       - master
       - feature
+    paths-ignore:
+      - ".github/workflows/distro.yml"
   workflow_dispatch:
 
 jobs:
diff --git a/.github/workflows/distro.yml b/.github/workflows/distro.yml
new file mode 100644
index 0000000000..baf40697d4
--- /dev/null
+++ b/.github/workflows/distro.yml
@@ -0,0 +1,353 @@
+name: Meson CI for Linux Distros
+
+on:
+  push:
+    branches:
+      - master
+      - feature
+      - cibuilds
+    paths-ignore:
+      - ".github/workflows/ci.yml"
+      - 'tools/osx-**'
+      - 'tools/win-installer-**'
+  pull_request:
+    branches:
+      - master
+      - feature
+    paths-ignore:
+      - ".github/workflows/ci.yml"
+      - 'tools/osx-**'
+      - 'tools/win-installer-**'
+  workflow_dispatch:
+
+jobs:
+  build:
+    name: ${{ matrix.name }}, ${{ matrix.buildtype }}
+    runs-on: ubuntu-latest
+    container:
+      image: ${{ matrix.container }}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        container:
+          - "archlinux:base-devel"
+          - "debian:bullseye-backports"
+          - "debian:bookworm-slim"
+          - "debian:trixie-slim"
+          - "debian:unstable-slim"
+          - "ubuntu:focal"
+          - "ubuntu:jammy"
+          - "ubuntu:noble"
+          - "fedora:latest"
+          - "fedora:rawhide"
+          - "opensuse/leap:latest"
+          - "opensuse/leap:15.6"
+          - "opensuse/tumbleweed:latest"
+        buildtype: [release, debug]
+        include:
+          - cpp-std: "c++14"
+          - avisynthplus: false
+          - lua52compat: false
+          - age: 2
+# ffms2     ≥ 5.0    requires age ≤ 0;  age ≥ 1 infers ffms2     < 5.0
+# libass    ≥ 0.17.2 requires age ≤ 1;  age ≥ 2 infers libass    < 0.17.2
+# ffmpeg    ≥ 6.1    requires age ≤ 2;  age ≥ 3 infers ffmpeg    < 6.1
+# meson     ≥ 1.0    requires age ≤ 3;  age ≥ 4 infers meson     < 1.0
+# wxWidgets ≥ 3.1    requires age ≤ 4;  age ≥ 5 infers wxWidgets < 3.1
+# xxHash    ≥ 0.8    requires age ≤ 5;  age ≥ 6 infers xxHash    < 0.8
+          - name: Archlinux
+            container: archlinux:base-devel
+            avisynthplus: true
+          - group: deb
+            name: Debian 11
+            container: debian:bullseye-backports
+            age: 5
+          - group: deb
+            name: Debian 12
+            container: debian:bookworm-slim
+            age: 3
+          - group: deb
+            name: Debian 13
+            container: debian:trixie-slim
+          - group: deb
+            name: Debian Unstable
+            container: debian:unstable-slim
+          - group: deb
+            name: Ubuntu 20.04
+            container: ubuntu:focal
+            age: 6
+          - group: deb
+            name: Ubuntu 22.04
+            container: ubuntu:jammy
+            age: 5
+          - group: deb
+            name: Ubuntu 24.04
+            container: ubuntu:noble
+          - group: rh
+            name: Fedora Latest
+            container: fedora:latest
+            lua52compat: true
+            age: 3
+          - group: rh
+            name: Fedora Rawhide
+            container: fedora:rawhide
+            lua52compat: true
+          - group: suse
+            name: openSUSE Leap 15.5
+            container: opensuse/leap:15.5
+            version: "15.5"
+          - group: suse
+            name: openSUSE Leap 15.6
+            container: opensuse/leap:15.6
+            version: "15.6"
+          - group: suse
+            name: openSUSE Tumbleweed
+            container: opensuse/tumbleweed:latest
+          - args: >-
+              --prefix=/usr
+              -Ddefault_audio_output=PulseAudio
+              -Davisynth=enabled
+              -Dbestsource=enabled
+              -Dffms2=enabled
+              -Dffmpeg:default_library=shared
+              -Dffmpeg:gpl=enabled
+              -Dffmpeg:version3=enabled
+              -Dffmpeg:libdav1d=enabled
+              -Dvapoursynth=enabled
+
+    env:
+      USERNAME: user1
+      USER_UID: 1001
+      USER_GID: 1001
+
+    steps:
+      - name: Prerequisites (Arch Linux)
+        if: contains(matrix.container, 'archlinux')
+        run: pacman --noconfirm -Syu cmake git
+
+      - name: Add Git PPA for Ubuntu 20.04
+        if: matrix.name == 'Ubuntu 20.04'
+        run: |
+          DEBIAN_FRONTEND=noninteractive apt-get update
+          DEBIAN_FRONTEND=noninteractive apt-get install \
+          --no-install-recommends -y software-properties-common
+          add-apt-repository ppa:git-core/ppa
+
+      - name: Prerequisites (Debian & Ubuntu)
+        if: matrix.group == 'deb'
+        run: |
+          DEBIAN_FRONTEND=noninteractive apt-get update
+          DEBIAN_FRONTEND=noninteractive apt-get install \
+          --no-install-recommends -y cmake git curl \
+          ca-certificates sudo build-essential \
+          autoconf automake libtool gettext libgettextpo-dev
+      
+      - name: Prerequisites (Fedora)
+        if: matrix.group == 'rh'
+        run: |
+          dnf -y clean all
+          dnf -y update
+          dnf -y group install --skip-broken c-development
+          dnf -y install cmake git curl sudo libtool gettext
+
+      - name: Add Repos (openSUSE Leap)
+        if: startsWith(matrix.container, 'opensuse/leap')
+        env:
+          VER: ${{ matrix.version }}
+        run: |
+          zypper addrepo -p 90 -f https://download.opensuse.org/repositories/devel:/libraries:/c_c++/$VER/devel:libraries:c_c++.repo
+          zypper addrepo -p 90 -f https://download.opensuse.org/repositories/devel:/tools:/building/$VER/devel:tools:building.repo
+          zypper addrepo -p 90 -f https://download.opensuse.org/repositories/multimedia:/libs/$VER/multimedia:libs.repo
+
+      - name: Prerequisites (openSUSE)
+        if: matrix.group == 'suse'
+        run: |
+          zypper clean --all
+          zypper --gpg-auto-import-keys refresh
+          zypper update --no-confirm
+          zypper install -y --type pattern devel_C_C++
+          zypper install -y gcc13 gcc13-c++
+          zypper install -y cmake git curl sudo libtool gettext-runtime gettext-tools
+
+      - name: Set latest gcc/g++ as default (openSUSE Leap)
+        if: startsWith(matrix.container, 'opensuse/leap')
+        run: |
+          zypper remove -y gcc7 gcc7-c++
+          update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-13 1
+          update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-13 1
+
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Checkout Avisynth+ repo
+        if: ${{ ! matrix.avisynthplus }}
+        uses: actions/checkout@v4
+        with:
+          repository: AviSynth/AviSynthPlus
+          ref: "3.7"
+          path: subprojects/avisynth
+
+      - name: Checkout BestSource repo
+        uses: actions/checkout@v4
+        with:
+          repository: vapoursynth/bestsource
+          ref: R4
+          path: subprojects/bestsource
+          submodules: recursive
+
+      - name: Checkout FFMS2 repo
+        uses: actions/checkout@v4
+        with:
+          repository: FFMS/ffms2
+          ref: 5.0-RC4
+          path: subprojects/ffms2
+          submodules: recursive
+
+      - name: Checkout LuaJIT repo
+        if: ${{ ! matrix.lua52compat }}
+        uses: actions/checkout@v4
+        with:
+          repository: LuaJIT/LuaJIT
+          path: subprojects/luajit
+
+      - name: Install dependencies (Arch Linux)
+        if: contains(matrix.container, 'archlinux')
+        run: |
+          pacman --noconfirm -Syu wireplumber
+          pacman --noconfirm -Sy pipewire-jack
+          pacman --noconfirm -Sy avisynthplus boost ffmpeg fftw \
+          fontconfig hunspell libass libglvnd meson openal portaudio \
+          python pulseaudio uchardet vapoursynth wxwidgets-gtk3
+
+      - name: Install meson from pip (Old)
+        if: ${{ matrix.group == 'deb' && matrix.age >= 4 }} 
+        run: |
+          apt-get install -y python3 python3-pip
+          pip install meson
+
+      - name: Install meson from apt (New)
+        if: ${{ matrix.group == 'deb' && matrix.age <= 3 }}
+        run: apt-get install --no-install-recommends -y meson
+
+      - name: Install some dependencies (Debian & Ubuntu)
+        if: matrix.group == 'deb'
+        run: |
+          apt-get install -y pkg-config
+          apt-get install --no-install-recommends -y nasm \
+          ninja-build libx11-dev libfreetype6-dev libfontconfig1-dev \
+          libnotify-dev libass-dev libasound2-dev intltool \
+          libboost-all-dev libhunspell-dev libuchardet-dev \
+          libpulse-dev libopenal-dev libfftw3-dev libopus-dev
+
+      - name: Install ffmpeg 6.1+ (Debian 13+, Ubuntu 24.04+)
+        if: ${{ matrix.group == 'deb' && matrix.age <= 2 }}
+        run: |
+          apt-get install -y \
+          libavcodec-dev libavdevice-dev libavfilter-dev libavformat-dev \
+          libavutil-dev libpostproc-dev libswresample-dev libswscale-dev
+
+      - name: Install wxWidgets 3.0 (Old)
+        if: ${{ matrix.group == 'deb' && matrix.age >= 5 }}
+        run: apt-get install -y libwxgtk3.0-gtk3-dev wx3.0-i18n
+
+      - name: Install wxWidgets 3.2 (New)
+        if: ${{ matrix.group == 'deb' && matrix.age <= 4 }}
+        run: apt-get install -y libwxgtk3.2-dev wx3.2-i18n
+
+      - name: Install xxHash (Very Old Debian/Ubuntu)
+        if: ${{ matrix.group == 'deb' && matrix.age <= 5 }}
+        run: apt-get install -y libxxhash-dev
+
+      - name: Install dependencies (Fedora)
+        if: matrix.group == 'rh'
+        run: |
+          dnf -y install pkgconf-pkg-config
+          dnf -y install --skip-broken meson ninja-build libX11 freetype nasm \
+          fontconfig-devel libnotify-devel libass-devel intltool zlib-devel \
+          boost-devel hunspell-devel uchardet-devel pulseaudio-libs-devel \
+          fftw-devel openal-soft xxhash-devel luajit-devel wxGTK-devel \
+          ffmpeg-free-devel opus-devel
+
+      - name: Install dependencies (openSUSE)
+        if: matrix.group == 'suse'
+        run: |
+          zypper install -y libboost_chrono-devel \
+          libboost_headers-devel libboost_filesystem-devel \
+          libboost_locale-devel libboost_regex-devel \
+          libboost_program_options-devel
+          zypper install -y meson ninja nasm \
+          libnotify-devel libass-devel intltool zlib-devel \
+          hunspell-devel libuchardet-devel libpulse-devel \
+          fftw3-devel openal-soft-devel xxhash-devel luajit-devel \
+          wxGTK3-3_2-devel vapoursynth-devel
+          zypper install -y ffmpeg-7-libavcodec-devel ffmpeg-7-libavdevice-devel \
+          ffmpeg-7-libavfilter-devel ffmpeg-7-libavformat-devel \
+          ffmpeg-7-libavutil-devel ffmpeg-7-libpostproc-devel \
+          ffmpeg-7-libswresample-devel ffmpeg-7-libswscale-devel
+
+      - name: Download gtest
+        run: |
+          cd subprojects
+          mkdir packagecache
+          cd packagecache
+          curl -o gtest-1.14.0.tar.gz -L https://github.com/google/googletest/archive/refs/tags/v1.14.0.tar.gz
+          curl -o gtest_1.14.0-1_patch.zip -L https://wrapdb.mesonbuild.com/v2/gtest_1.14.0-1/get_patch
+
+      - name: Add meson.build to AviSynth+
+        if: ${{ ! matrix.avisynthplus }}
+        run: meson subprojects packagefiles --apply avisynth
+
+      - name: Add meson.build to BestSource and FFMS2
+        run: |
+          cd subprojects/bestsource
+          git reset --hard 9d7e218
+          cd ..
+          patch --directory=./bestsource --forward --strip=1 < ./packagefiles/bestsource/0001.patch
+          cd ..
+          meson subprojects packagefiles --apply bestsource
+          meson subprojects packagefiles --apply ffms2
+
+      - name: Download FFmpeg
+        if: matrix.age > 1
+        run: |
+          cd subprojects
+          sudo -u user1 git clone --depth=1 -b meson-6.1 https://gitlab.freedesktop.org/gstreamer/meson-ports/ffmpeg.git
+          patch --directory=./ffmpeg --forward --strip=1 < ./packagefiles/ffmpeg/0001.patch
+          cd ..
+          sudo -u user1 meson subprojects packagefiles --apply ffmpeg
+
+      - name: Add meson.build to LuaJIT
+        if: ${{ ! matrix.lua52compat }}
+        run: meson subprojects packagefiles --apply luajit
+
+      - name: Add non-root user
+        run: |
+          groupadd --gid $USER_GID $USERNAME
+          useradd --uid $USER_UID --gid $USER_GID -m $USERNAME
+          echo $USERNAME ALL=\(root\) NOPASSWD:ALL > /etc/sudoers.d/$USERNAME
+          chmod 0440 /etc/sudoers.d/$USERNAME
+
+      - name: Configure
+        run: |
+          chown -R $USERNAME:$USER_GID /__w/Aegisub/Aegisub
+          sudo -u $USERNAME C_FLAGS="-Wall -Wextra -Wpedantic" CXX_FLAGS="-Wall -Wextra -Wpedantic" \
+          meson setup build ${{ matrix.args }} -Dcpp_std=${{ matrix.cpp-std }} -Dbuildtype=${{ matrix.buildtype }}
+
+      - name: Build
+        run: sudo -u $USERNAME meson compile -C build
+
+      # TODO: Looking for openSUSE Leap users to fix it
+      - name: Run test
+        env:
+          IGNORE_ERROR: ${{ startsWith(matrix.container, 'opensuse/leap') && '|| true' || ''}}
+        run: |
+          sudo -u $USERNAME meson test -C build --verbose "gtest main"$IGNORE_ERROR
+          chown -R root:root /__w/Aegisub/Aegisub
+
+      - name: Generate Package
+        run: |
+          mkdir -p pkgdir
+          meson install -C build --destdir=../pkgdir
+          tree pkgdir