Linux Install ffmpeg build dependencies and compile ffmpeg from source with libsvtav1

build_ffmpeg_with_svtav1.sh

#!/bin/bash
set -e

# Build script for ffmpeg with libsvtav1 support on Ubuntu
# Based on git tag: a1328e68877e12ab5a6e5d92a84aefa566783ea5
# As noted in https://wiki.seeedstudio.com/lerobot_so100m_new/ for Linux
# Tested on Ubuntu 24.04.1 LTS

echo "=== Installing ffmpeg build dependencies ==="
sudo apt-get update
sudo apt-get install -y \
    build-essential \
    git \
    yasm \
    cmake \
    nasm \
    libx264-dev \
    libx265-dev \
    libvpx-dev \
    libfdk-aac-dev \
    libmp3lame-dev \
    libopus-dev \
    libvorbis-dev \
    libtheora-dev \
    libxvidcore-dev \
    libass-dev \
    libfreetype6-dev \
    libfontconfig1-dev \
    libfribidi-dev \
    libharfbuzz-dev \
    libnuma-dev \
    pkg-config \
    autoconf \
    automake \
    libtool \
    zlib1g-dev \
    libssl-dev

echo "=== Creating build directory ==="
BUILD_DIR="$HOME/ffmpeg_build"
mkdir -p "$BUILD_DIR"
cd "$BUILD_DIR"

echo "=== Cloning and building SVT-AV1 ==="
if [ ! -d "SVT-AV1" ]; then
    git clone https://gitlab.com/AOMediaCodec/SVT-AV1.git
fi
cd SVT-AV1
git checkout v2.3.0  # Use a stable version
cd Build
cmake .. -G"Unix Makefiles" -DCMAKE_BUILD_TYPE=Release
make -j$(nproc)
sudo make install
sudo ldconfig
cd "$BUILD_DIR"

echo "=== Cloning ffmpeg from specific tag ==="
if [ ! -d "ffmpeg" ]; then
    git clone https://git.ffmpeg.org/ffmpeg.git
fi
cd ffmpeg
git fetch --all --tags
git checkout a1328e68877e12ab5a6e5d92a84aefa566783ea5

echo "=== Configuring ffmpeg with libsvtav1 support ==="
./configure \
    --prefix=/usr/local \
    --enable-gpl \
    --enable-version3 \
    --enable-nonfree \
    --enable-libsvtav1 \
    --enable-libx264 \
    --enable-libx265 \
    --enable-libvpx \
    --enable-libfdk-aac \
    --enable-libmp3lame \
    --enable-libopus \
    --enable-libvorbis \
    --enable-libtheora \
    --enable-libxvid \
    --enable-libass \
    --enable-libfreetype \
    --enable-libfontconfig \
    --enable-libfribidi \
    --enable-libharfbuzz \
    --enable-openssl \
    --extra-cflags="-I/usr/local/include" \
    --extra-ldflags="-L/usr/local/lib" \
    --enable-shared \
    --enable-pic

echo "=== Building ffmpeg ==="
make -j$(nproc)

echo "=== Installing ffmpeg ==="
sudo make install
sudo ldconfig

echo "=== Verifying installation ==="
/usr/local/bin/ffmpeg -version
echo ""
echo "=== Checking for libsvtav1 support ==="
/usr/local/bin/ffmpeg -encoders | grep svtav1 || echo "Warning: svtav1 encoder not found"
/usr/local/bin/ffmpeg -decoders | grep av1 || echo "Warning: av1 decoder not found"

echo ""
echo "=== Cleaning up build directory ==="
rm -rf "$BUILD_DIR"
echo "Build directory removed: $BUILD_DIR"

echo ""
echo "=== Build complete! ==="
echo "ffmpeg binary location: $(which ffmpeg)"
echo "If you see /usr/bin/ffmpeg, you may need to update your PATH or use /usr/local/bin/ffmpeg directly"

# ============================================================================
# REVERTING FFMPEG PRECEDENCE
# ============================================================================
# This script installs ffmpeg to /usr/local/bin/ffmpeg, which typically takes
# precedence over the system ffmpeg (usually at /usr/bin/ffmpeg) because
# /usr/local/bin comes before /usr/bin in the default PATH.
#
# To revert back to using the system ffmpeg (e.g., Ubuntu's ffmpeg 7.6.1):
#
# Option 1: Remove the custom build (recommended if you want to completely remove it)
#   sudo rm /usr/local/bin/ffmpeg /usr/local/bin/ffprobe /usr/local/bin/ffplay
#   sudo rm -rf /usr/local/lib/libav* /usr/local/lib/libsw*
#   sudo ldconfig
#
# Option 2: Rename the custom build (keeps it available but not in PATH)
#   sudo mv /usr/local/bin/ffmpeg /usr/local/bin/ffmpeg-custom
#   sudo mv /usr/local/bin/ffprobe /usr/local/bin/ffprobe-custom
#   sudo mv /usr/local/bin/ffplay /usr/local/bin/ffplay-custom
#
# Option 3: Adjust PATH priority (temporary, per-session)
#   export PATH="/usr/bin:$PATH"
#   Or make it permanent by editing ~/.bashrc or ~/.zshrc:
#   echo 'export PATH="/usr/bin:$PATH"' >> ~/.zshrc
#
# Option 4: Use full path when needed
#   /usr/bin/ffmpeg  # Use system ffmpeg
#   /usr/local/bin/ffmpeg  # Use custom build with libsvtav1
#
# Verify which ffmpeg is being used:
#   which ffmpeg
#   ffmpeg -version
# ============================================================================