Codeveloper Codeveloper - 25 days ago 12
Android Question

How to Compile FFmpeg with x264 and libfdk-aac for Android

Everyone.

Please understand that i use the wrong english.

I want to make encoding application using FFmpeg.

I was successfully building NDK with FFmpeg.

However, to encode H.264 video made had failed( Codec not found.. ).

I was learned that libx264 is need encode H.264 and libfdk-aac is need encode AAC.

so I tried to build the libx264 and libfdk-aac, But does not easily cross-compile.

Please tell me what I did wrong.

My Development Environment


OS : ubuntu 13.10 64bit

NDK : android-ndk-r9

FFmpeg : ffmpeg-2.0.2


x264 build : build_x264_android.sh

NDK=$ANDROID_NDK_HOME

TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64
PLATFORM=$NDK/platforms/android-9/arch-arm
CPU=arm
PREFIX=$NDK/sources/ffmpeg-2.0.2/android/$CPU

./configure --prefix=$PREFIX \
--enable-shared \
--enable-pic \
--disable-asm \
--disable-cli \
--host=arm-linux \
--cross-prefix=$TOOLCHAIN/bin/arm-linux-androideabi- \
--sysroot=$PLATFORM

make
make install
ldconfig


fdk-aac build : build_aac_android.sh

NDK=$ANDROID_NDK_HOME
CROSS_PREFIX=$NDK/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-
PLATFORM=$NDK/platforms/android-9/arch-arm
CPU=arm
PREFIX=$NDK/sources/ffmpeg-2.0.2/android/$CPU
OPTIMIZE_CFLAGS="-mfloat-abi=softfp -mfpu=vfpv3-d16 -marm -march=armv7-a -mthumb -D__thumb__"

./configure --prefix=$PREFIX \
--with-sysroot=$PLATFORM \
--host=arm-linux \
--enable-shared \
--with-pic=no \
CC="${CROSS_PREFIX}gcc --sysroot=$PLATFORM" \
CXX="${CROSS_PREFIX}g++ --sysroot=$PLATFORM" \
RANLIB="${CROSS_PREFIX}ranlib" \
AR="${CROSS_PREFIX}ar" \
STRIP="${CROSS_PREFIX}strip" \
NM="${CROSS_PREFIX}nm" \
CFLAGS="-O3 $OPTIMIZE_CFLAGS --sysroot=$PLATFORM" \
CXXFLAGS="-O3 $OPTIMIZE_CFLAGS --sysroot=$PLATFORM"

make
make install


When I run 'build_aac_android.sh', shown error.

log in config.log

configure:2907: checking for arm-linux-gcc
configure:2934: result: /toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-gcc --sysroot=/platforms/android-9/arch-arm
configure:3203: checking for C compiler version
configure:3212: /toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-gcc --sysroot=/platforms/android-9/arch-arm --version >&5
./configure: line 3214: /toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-gcc: No such file or directory
configure:3223: $? = 127
configure:3212: /toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-gcc --sysroot=/platforms/android-9/arch-arm -v >&5
./configure: line 3214: /toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-gcc: No such file or directory
configure:3223: $? = 127
configure:3212: /toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-gcc --sysroot=/platforms/android-9/arch-arm -V >&5
./configure: line 3214: /toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-gcc: No such file or directory
configure:3223: $? = 127
configure:3212: /toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-gcc --sysroot=/platforms/android-9/arch-arm -qversion >&5
./configure: line 3214: /toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-gcc: No such file or directory
configure:3223: $? = 127
configure:3243: checking whether the C compiler works
configure:3265: /toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-gcc --sysroot=/platforms/android-9/arch-arm -O3 -mfloat-abi=softfp -mfpu=vfpv3-d16 -marm -march=armv7-a -mthumb -D__thumb__ --sysroot=/platforms/android-9/arch-arm conftest.c >&5
./configure: line 3267: /toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-gcc: No such file or directory

configure:3312: error: in `/home/nel/android-ndk-r9/sources/ffmpeg-2.0.2/libfdk-aac':
configure:3314: error: C compiler cannot create executables
See `config.log' for more details


I cannot understand that error!! I was confirmed that arm-linux-androideabi-gcc is found in the directory..

I want to borrow you wisdom. Please tell me how to 'ffmpeg+x264+fdk-aac' build for android.

Thanks.. :-)

Answer

You can try/fork/clone my library. It already compiles x264 and libfdk-aac. You can use any version of gcc toolchains (like 4.9) and supports the newest android platform (21).

You can easily build ffmpeg (2.6 or newest version) from my repo running 2-3 scripts.

It is hard to explain how to compile both but you can checkout the build_android.sh script which compiles x264 and libfdk-aac for all architectures.

You can read the bash function build_aac and build_x264 to see how it was cross compiled.

REPO: https://github.com/matthewn4444/VPlayer_lib

INSTRUCTIONS: https://github.com/matthewn4444/VPlayer_lib/wiki/Compiling-FFmpeg