CI+DevContainer+Documentation: Remove install steps for ffmpeg libs

.devcontainer/features/ladybird/devcontainer-feature.json

@@ -1,7 +1,7 @@
 {
     "name": "Ladybird Development",
     "id": "ladybird",
-    "version": "2.0.0",
+    "version": "2.0.1",
     "description": "Enable development of Ladybird libraries and applications",
     "options": {
         "llvm_version": {

.devcontainer/features/ladybird/install.sh

@@ -28,7 +28,7 @@ install_llvm_key() {
 ### Install packages
 
 apt update -y
-apt install -y lsb-release git python3 autoconf autoconf-archive automake build-essential cmake libavcodec-dev libavformat-dev libavutil-dev libgl1-mesa-dev nasm ninja-build pkg-config qt6-base-dev qt6-tools-dev-tools qt6-multimedia-dev qt6-wayland ccache fonts-liberation2 zip unzip curl tar
+apt install -y lsb-release git python3 autoconf autoconf-archive automake build-essential cmake libgl1-mesa-dev nasm ninja-build pkg-config qt6-base-dev qt6-tools-dev-tools qt6-multimedia-dev qt6-wayland ccache fonts-liberation2 zip unzip curl tar
 ### Ensure new enough host compiler is available
 
 VERSION="0.0.0"

.github/actions/setup/action.yml

@@ -32,7 +32,7 @@ runs:
 
         sudo apt-get update -y
         sudo apt-get install -y autoconf autoconf-archive automake build-essential ccache clang-18 clang++-18 cmake curl fonts-liberation2 \
-            gcc-13 g++-13 libavcodec-dev libavformat-dev libavutil-dev libegl1-mesa-dev libgl1-mesa-dev libpulse-dev libssl-dev \
+            gcc-13 g++-13 libegl1-mesa-dev libgl1-mesa-dev libpulse-dev libssl-dev \
             libstdc++-13-dev lld-18 nasm ninja-build qt6-base-dev qt6-tools-dev-tools tar unzip zip
 
         sudo update-alternatives --install /usr/bin/clang clang /usr/bin/clang-18 100
@@ -57,7 +57,7 @@ runs:
       run: |
         set -e
         brew update
-        brew install autoconf autoconf-archive automake bash ccache coreutils ffmpeg llvm@18 nasm ninja qt unzip wabt
+        brew install autoconf autoconf-archive automake bash ccache coreutils llvm@18 nasm ninja qt unzip wabt
 
     - name: 'Install vcpkg'
       shell: bash

Documentation/BuildInstructionsLadybird.md

@@ -2,7 +2,7 @@
 
 ## Build Prerequisites
 
-Qt6 development packages, FFmpeg, nasm, additional build tools, and a C++23 capable compiler like g++-13 or clang-17 are required.
+Qt6 development packages, nasm, additional build tools, and a C++23 capable compiler like g++-13 or clang-17 are required.
 
 CMake 3.25 or newer must be available in $PATH.
 
@@ -15,7 +15,7 @@ CMake 3.25 or newer must be available in $PATH.
 
 <!-- Note: If you change something here, please also change it in the `devcontainer/devcontainer.json` file. -->
 ```bash
-sudo apt install autoconf autoconf-archive automake build-essential ccache cmake curl fonts-liberation2 git libavcodec-dev libavformat-dev libavutil-dev libgl1-mesa-dev nasm ninja-build pkg-config qt6-base-dev qt6-tools-dev-tools qt6-wayland tar unzip zip
+sudo apt install autoconf autoconf-archive automake build-essential ccache cmake curl fonts-liberation2 git libgl1-mesa-dev nasm ninja-build pkg-config qt6-base-dev qt6-tools-dev-tools qt6-wayland tar unzip zip
 ```
 
 #### CMake 3.25 or newer:
@@ -79,24 +79,24 @@ sudo apt install qt6-multimedia-dev
 ### Arch Linux/Manjaro:
 
 ```
-sudo pacman -S --needed autoconf-archive automake base-devel ccache cmake curl ffmpeg libgl nasm ninja qt6-base qt6-multimedia qt6-tools qt6-wayland ttf-liberation tar unzip zip
+sudo pacman -S --needed autoconf-archive automake base-devel ccache cmake curl libgl nasm ninja qt6-base qt6-multimedia qt6-tools qt6-wayland ttf-liberation tar unzip zip
 ```
 
 ### Fedora or derivatives:
 ```
-sudo dnf install autoconf-archive automake ccache cmake curl libavcodec-free-devel libavformat-free-devel liberation-sans-fonts libglvnd-devel nasm ninja-build perl-FindBin perl-IPC-Cmd qt6-qtbase-devel qt6-qtmultimedia-devel qt6-qttools-devel qt6-qtwayland-devel tar unzip zip zlib-ng-compat-static
+sudo dnf install autoconf-archive automake ccache cmake curl liberation-sans-fonts libglvnd-devel nasm ninja-build perl-FindBin perl-IPC-Cmd qt6-qtbase-devel qt6-qtmultimedia-devel qt6-qttools-devel qt6-qtwayland-devel tar unzip zip zlib-ng-compat-static
 ```
 
 ### openSUSE:
 ```
-sudo zypper install autoconf-archive automake ccache cmake curl ffmpeg-7-libavcodec-devel ffmpeg-7-libavformat-devel gcc13 gcc13-c++ liberation-fonts libglvnd-devel nasm ninja qt6-base-devel qt6-multimedia-devel qt6-tools-devel qt6-wayland-devel tar unzip zip
+sudo zypper install autoconf-archive automake ccache cmake curl gcc13 gcc13-c++ liberation-fonts libglvnd-devel nasm ninja qt6-base-devel qt6-multimedia-devel qt6-tools-devel qt6-wayland-devel tar unzip zip
 ```
 The build process requires at least python3.7; openSUSE Leap only features Python 3.6 as default, so it is recommendable to install package python311 and create a virtual environment (venv) in this case.
 
 ### Void Linux:
 ```
 sudo xbps-install -Su # (optional) ensure packages are up to date to avoid "Transaction aborted due to unresolved dependencies."
-sudo xbps-install -S git bash gcc python3 curl cmake zip unzip linux-headers make pkg-config autoconf automake autoconf-archive nasm MesaLib-devel ninja ffmpeg-devel qt6-base-devel qt6-multimedia-devel qt6-tools-devel qt6-wayland-devel
+sudo xbps-install -S git bash gcc python3 curl cmake zip unzip linux-headers make pkg-config autoconf automake autoconf-archive nasm MesaLib-devel ninja qt6-base-devel qt6-multimedia-devel qt6-tools-devel qt6-wayland-devel
 ```
 
 ### NixOS or with Nix:
@@ -127,7 +127,7 @@ Xcode 14 versions before 14.3 might crash while building ladybird. Xcode 14.3 or
 
 ```
 xcode-select --install
-brew install autoconf autoconf-archive automake ccache cmake ffmpeg nasm ninja pkg-config
+brew install autoconf autoconf-archive automake ccache cmake nasm ninja pkg-config
 ```
 
 If you wish to use clang from homebrew instead: