FFmpeg configure options

ffmpeg-build.sh

#!/bin/bash
if [ -z "$ANDROID_NDK" ]; then
  echo "Please set ANDROID_NDK to the Android NDK folder"
  exit 1
fi

#Change to your local machine's architecture
HOST_OS_ARCH=darwin-x86_64

function configure_ffmpeg {

  ABI=$1
  PLATFORM_VERSION=$2
  TOOLCHAIN_PATH=$ANDROID_NDK/toolchains/llvm/prebuilt/${HOST_OS_ARCH}/bin
  local STRIP_COMMAND

  # Determine the architecture specific options to use
  case ${ABI} in
  armeabi-v7a)
    TOOLCHAIN_PREFIX=armv7a-linux-androideabi
    STRIP_COMMAND=arm-linux-androideabi-strip
    ARCH=armv7-a
    ;;
  arm64-v8a)
    TOOLCHAIN_PREFIX=aarch64-linux-android
    ARCH=aarch64
    ;;
  x86)
    TOOLCHAIN_PREFIX=i686-linux-android
    ARCH=x86
    EXTRA_CONFIG="--disable-asm"
    ;;
  x86_64)
    TOOLCHAIN_PREFIX=x86_64-linux-android
    ARCH=x86_64
    EXTRA_CONFIG="--disable-asm"
    ;;
  esac

  if [ -z ${STRIP_COMMAND} ]; then
    STRIP_COMMAND=${TOOLCHAIN_PREFIX}-strip
  fi

  echo "Configuring FFmpeg build for ${ABI}"
  echo "Toolchain path ${TOOLCHAIN_PATH}"
  echo "Command prefix ${TOOLCHAIN_PREFIX}"
  echo "Strip command ${STRIP_COMMAND}"

  ./configure \
  --prefix=build/${ABI} \ # The path where the resulting libraries and headers will be installed after `make install` is run. The resulting directory structure is "build/{armeabi-v7a,arm64-v8a,x86,x86_64}/{include, lib}".
  --target-os=android \ # Target operating system name.
  --arch=${ARCH} \ # Target CPU architecture e.g. armv7-a.
  --enable-cross-compile \ # We are compiling for a different target architecture than the host.
  --cc=${TOOLCHAIN_PATH}/${TOOLCHAIN_PREFIX}${PLATFORM_VERSION}-clang \ # Path to the C compiler. In our case we're using clang. 
  --strip=${TOOLCHAIN_PATH}/${STRIP_COMMAND} \ # Path to the strip binary for our target architecture.
  --enable-small \ # Optimize for size instead of speed.
  --disable-programs \ # Do not build command line programs. We don't need them as our app will be interacting with the FFmpeg API. 
  --disable-doc \ # Do not build documentation.
  --enable-shared \ # Build shared libraries. We'll keep the FFmpeg .so files separate from our main shared library.
  --disable-static \ # Do not build static libraries.
  ${EXTRA_CONFIG} \
  --disable-everything \ # Disable all modules. To keep the library size to a minimum we will explicitly specify the modules to be built below.
  --enable-decoder=mp3 \ # Enable the MP3 decoder. For a list of supported decoders type ./configure --help.
  --enable-demuxer=mp3 # Enable the MP3 demuxer. For a list of supported demuxers type ./configure --help.
  
  return $?
}

function build_ffmpeg {

  configure_ffmpeg $1 $2

  if [ $? -eq 0 ]
  then
          make clean
          make -j12
          make install
  else
          echo "FFmpeg configuration failed, please check the error log."
  fi
}

build_ffmpeg armeabi-v7a 16
build_ffmpeg arm64-v8a 21
build_ffmpeg x86 16
build_ffmpeg x86_64 21

Hi Don. Here is a blog article: https://xebia.com/blog/the-lgpl-on-android/ - see d1. There are also some discussions, for instance here: https://stackoverflow.com/questions/4916512/using-lgpl-library-in-paid-android-app

Hi Don, I'm getting the following error while executing bash.

./ffmpeg-build.sh: line 59: unexpected EOF while looking for matching `''
./ffmpeg-build.sh: line 87: syntax error: unexpected end of file

@prashan-prajapati Did you edit the script? If so, it could be that you have a \ in the wrong place.

@harthorst That article is referring to LGPL 3.0 whereas FFmpeg is licensed with LGPL 2.1 which does not contain the clause (section 4.1.b) about providing an update mechanism.

@dturner thanks. I did not see that

Hi Don, I'm getting the following error while executing bash.

./ffmpeg-build.sh: line 59: unexpected EOF while looking for matching `''
./ffmpeg-build.sh: line 87: syntax error: unexpected end of file

I had the same problem. Solution: delete all comments from lines 50 - 64