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Source: Android Native Development Kit Cookbook, Blog, Roman10, Ph0b

Question: How to FUCKING build and use FFmpeg with Android Studio!!!

Answer: For FFMPEG v3.0.2 and NDK r11

1. Install Linux Mint in VirtualBox (building on Windows is a NIGHTMARE, don't even try)

2. Download and Install Android NDK (v11) <- Add link to setup NDK gist

After downloading NDK, simply decompress the archive. Note: - We’ll use $NDK to represent the root path of the decompressed NDK.

1. Download FFMPEG (version v3.0.2) and decompress it into $NDK/sources folder.

2. Open ffmpeg-3.0.2/configure file with a text editor and locate the following lines:

SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'

and replace with this:

SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
SLIB_INSTALL_LINKS='$(SLIBNAME)'

1. Create a file build_android.sh under the $NDK/sources/ffmpeg-3.0.2 folder and paste below code, need to update NDK's path to your NDK folder, update SYSROOT and TOOLCHAIN depending on the versions coming with your NDK. Possible NOTICE:

#!/bin/bash
NDK=/home/viet/Android/android-ndk-r11c
SYSROOT=$NDK/platforms/android-23/arch-arm/
TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64
function build_one
{
./configure \
 --prefix=$PREFIX \
 --disable-shared \
 --enable-static \
 --disable-doc \
 --disable-ffmpeg \
 --disable-ffplay \
 --disable-ffprobe \
 --disable-ffserver \
 --disable-avdevice \
 --disable-doc \
 --disable-symver \
 --cross-prefix=$TOOLCHAIN/bin/arm-linux-androideabi- \
 --target-os=linux \
 --arch=arm \
 --enable-cross-compile \
 --sysroot=$SYSROOT \
 --extra-cflags="-Os -fpic $ADDI_CFLAGS" \
 --extra-ldflags="$ADDI_LDFLAGS" \
 $ADDITIONAL_CONFIGURE_FLAG
make clean
make
make install
}
CPU=arm
PREFIX=$(pwd)/android/$CPU
ADDI_CFLAGS="-marm"
build_one

After saving this file, it will disabled static library and enabled shared library (.so files).

Open the terminal in FFmpeg 3.0.2 folder and run below commands:

• Validate the script is executable:

  sudo chmod +x build_android.sh

• Excute the script:

  sudo ./build_android.sh

After build completion we can check the shared libraries in $NDK/sources/ ffmpeg-2.2.3/android/arm/lib folder (e.g.: - libavcodec-55.so).

Note: - lib folder also contains the symbolic links (e.g.: - libavcodec.so). We can remove them to avoid the confusion.