Compile FFmpeg with libbs2b

This guide provides a straightforward, step-by-step walkthrough on how to compile FFmpeg with the libbs2b (Bauer stereophonic-to-binaural) library enabled. You will learn how to install the necessary dependencies, download the FFmpeg source code, configure the build with the appropriate flags, and verify that the bs2b audio filter is successfully integrated.

Step 1: Install Required Dependencies

Before compiling, you must install the build tools and the development headers for libbs2b.

On Ubuntu/Debian-based systems, run the following command:

sudo apt update
sudo apt install build-essential pkg-config git yasm nasm libbs2b-dev

On macOS (using Homebrew):

brew install automake pkg-config libbs2b nasm

Step 2: Download the FFmpeg Source Code

Clone the official FFmpeg git repository to your local machine:

git clone https://git.ffmpeg.org/ffmpeg.git ffmpeg-source
cd ffmpeg-source

Step 3: Configure the Build

To enable libbs2b, you must pass the --enable-libbs2b flag to the configuration script. You will also need to enable GPL support, as some dependency checks require it.

Run the configure script:

./configure --enable-gpl --enable-libbs2b

If the configuration completes without errors, your environment is ready for compilation. If it fails, ensure pkg-config can locate libbs2b.pc by checking your PKG_CONFIG_PATH.

Step 4: Compile and Install FFmpeg

Compile the source code using multiple CPU cores to speed up the process, then install the compiled binaries:

make -j$(nproc)
sudo make install

(Note: On macOS, use sysctl -n hw.ncpu instead of nproc to determine your CPU cores.)

Step 5: Verify the Installation

To confirm that FFmpeg was compiled correctly and that the libbs2b filter is available, run the following command:

ffmpeg -filters | grep bs2b

If successful, the output will display the bs2b audio filter details, indicating that you can now use the Bauer stereophonic-to-binaural DSP effect in your audio processing workflows.