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  • Build FFmpeg for All Android architecture correctly

    26 octobre 2017, par fthopkins

    I built ffmpeg libraries for all android architecture. But some details are confusing my mind. First of all let me explain step by step how i built.

    • I downloaded latest version of libx264 from
      https://www.videolan.org/developers/x264.html
    • Created and run build_all.sh script (in x264 folder) for creating libs for (almost) all android platforms. Then i got android folder in x264 folder. e.g android/arm android/arm64 android/x86 android/x86_64 in x264 folder.
    • I download the ffmpeg3.3.4 from https://ffmpeg.org/download.html
    • I created 4 copies of ffmpeg3.3.4 folder. Named them with android architectures names.
      Like ffmpeg3.3.4-arm64 ffmpeg3.3.4-arm ffmpeg3.3.4-x86 ffmpeg3.3.4-x86_64
    • Created build_(architecture-name).sh for each platforms of android. Than move each one of 'named'.sh files to the named ffmpeg folders according to their architecture names.
      E.g build_android_x86.sh => ffmpeg3.3.4-x86

    build_android_arm64.sh example

    #!/bin/bash
    
#Change NDK to your Android NDK location
    
NDK=$HOME/Android/Sdk/ndk-bundle
    
PLATFORM=$NDK/platforms/android-21/arch-arm64/
    
PREBUILT=$NDK/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64
    

    
GENERAL="\
    
--enable-small \
    
--enable-cross-compile \
    
--extra-libs="-lgcc" \
    
--arch=aarch64 \
    
--cc=$PREBUILT/bin/aarch64-linux-android-gcc \
    
--cross-prefix=$PREBUILT/bin/aarch64-linux-android- \
    
--nm=$PREBUILT/bin/aarch64-linux-android-nm \
    
--extra-cflags="-I../x264/android/arm64/include" \
    
--extra-ldflags="-L../x264/android/arm64/lib" "
    

    
MODULES="\
    
--enable-gpl \
    
--enable-libx264"
    

    

    

    
function build_arm64
    
{
    
  ./configure \
    
  --logfile=conflog.txt \
    
  --target-os=linux \
    
  --prefix=./android/arm64-v8a \
    
  ${GENERAL} \
    
  --sysroot=$PLATFORM \
    
  --extra-cflags="" \
    
  --extra-ldflags="-lx264 -Wl,-rpath-link=$PLATFORM/usr/lib -L$PLATFORM/usr/lib -nostdlib -lc -lm -ldl -llog" \
    
  --enable-shared \
    
  --disable-static \
    
  --disable-doc \
    
  --enable-zlib \
    
  ${MODULES}
    

    
  make clean
    
  make
    
  make install
    
}
    

    
build_arm64
    

    

    
echo Android ARM64 builds finished
    • Moved all ffmpeg3.3.4-arm64 ffmpeg3.3.4-arm ffmpeg3.3.4-x86 ffmpeg3.3.4-x86_64 folders to the NDK_PATH (C:\Users\MyName\AppData\Local\Android\sdk\ndk-bundle)
    • Put x264 folder at same level of hierarchy with ffmpeg folders
      in (C:\Users\MyName\AppData\Local\Android\sdk\ndk-bundle)
    • Run each of build_android_x86.sh, build_android_x86_64.sh.. scripts one by one in their own ffmpeg folder. Then i got android folders in ffmpeg folders. (created android folders have library folders)
      e.g ffmpeg3.3.4-x86/android/x86/(bin,inlude,lib,share)

    • Created Android.mk files for all created android folders and moved each one of them to android/armName folder. e.g Android.mk => ffmpeg3.3.4-x86/android/x86/

      LOCAL_PATH:= $(call my-dir)
      

      
include $(CLEAR_VARS)
      
LOCAL_MODULE:= libavcodec
      
LOCAL_SRC_FILES:= lib/libavcodec-57.so
      
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
      
include $(PREBUILT_SHARED_LIBRARY)
      

      
include $(CLEAR_VARS)
      
LOCAL_MODULE:= libavformat
      
LOCAL_SRC_FILES:= lib/libavformat-57.so
      
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
      
include $(PREBUILT_SHARED_LIBRARY)
      

      
include $(CLEAR_VARS)
      
LOCAL_MODULE:= libswscale
      
LOCAL_SRC_FILES:= lib/libswscale-4.so
      
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
      
include $(PREBUILT_SHARED_LIBRARY)
      

      
include $(CLEAR_VARS)
      
LOCAL_MODULE:= libavutil
      
LOCAL_SRC_FILES:= lib/libavutil-55.so
      
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
      
include $(PREBUILT_SHARED_LIBRARY)
      

      
include $(CLEAR_VARS)
      
LOCAL_MODULE:= libavfilter
      
LOCAL_SRC_FILES:= lib/libavfilter-6.so
      
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
      
include $(PREBUILT_SHARED_LIBRARY)
      

      
include $(CLEAR_VARS)
      
LOCAL_MODULE:= libswresample
      
LOCAL_SRC_FILES:= lib/libswresample-2.so
      
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
      
include $(PREBUILT_SHARED_LIBRARY)
      

      
include $(CLEAR_VARS)
      
LOCAL_MODULE := postproc
      
LOCAL_SRC_FILES := lib/libpostproc-54.so
      
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
      
include $(PREBUILT_SHARED_LIBRARY)
      

      
include $(CLEAR_VARS)
      
LOCAL_MODULE := avdevice
      
LOCAL_SRC_FILES := lib/libavdevice-57.so
      
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
      
include $(PREBUILT_SHARED_LIBRARY)

    • Create "arm named" folders e.g x86 x86_4 arm64 arm7 in jni folder of my project (myproject/app/jni/x86, myproject/app/jni/x86_64).

    • Go to ndk path open named ffmpeg folders one by one and copy ffmpeg.c ffmpeg_filter.c ffmpeg_opt.c cmdutils.c files from ffmpeg folders to the "arm named" folders. e.g ffmpeg.c => myproject/app/jni/x86

    • Created Android.mk file in my project.

      LOCAL_PATH := $(call my-dir)
      
#$(warning $(LOCAL_PATH))
      

      
include $(CLEAR_VARS)
      
LOCAL_MODULE    := videoEdit
      
LOCAL_LDLIBS := -llog -ljnigraphics -lz -landroid
      
LOCAL_CFLAGS := -Wdeprecated-declarations
      
ANDROID_LIB := -landroid
      

      
$(info $(TARGET_ARCH_ABI))
      

      
ifeq ($(TARGET_ARCH_ABI),armeabi-v7a)
      
    LOCAL_C_INCLUDES:=/Users/MyName/AppData/Local/Android/sdk/ndk-bundle/sources/ffmpeg-3.3.4-armeabi
      
    LOCAL_SRC_FILES :=  videoEdit.c arm7/ffmpeg.c arm7/ffmpeg_filter.c arm7/ffmpeg_opt.c arm7/cmdutils.c
      
    LOCAL_CFLAGS += -lx264 -Wl,--no-merge-exidx-entries
      
else
      

      
    ifeq ($(TARGET_ARCH_ABI),arm64-v8a)
      
            LOCAL_C_INCLUDES:=/Users/MyName/AppData/Local/Android/sdk/ndk-bundle/sources/ffmpeg-3.3.4-arm64-v8a
      
            LOCAL_SRC_FILES :=  videoEdit.c arm64/ffmpeg.c arm64/ffmpeg_filter.c arm64/ffmpeg_opt.c arm64/cmdutils.c
      
            LOCAL_CFLAGS += -funwind-tables -Wl,--no-merge-exidx-entries
      
    else
      

      
        ifeq ($(TARGET_ARCH_ABI),x86_64)
      
               LOCAL_C_INCLUDES:=/Users/MyName/AppData/Local/Android/sdk/ndk-bundle/sources/ffmpeg3.3.4-x86_64
      
               LOCAL_SRC_FILES :=  videoEdit.c x86_64/ffmpeg.c x86_64/ffmpeg_filter.c x86_64/ffmpeg_opt.c x86_64/cmdutils.c
      
        else
      
                LOCAL_C_INCLUDES:=/Users/MyName/AppData/Local/Android/sdk/ndk-bundle/sources/ffmpeg3.3.4-x86
      
                LOCAL_SRC_FILES :=  videoEdit.c x86/ffmpeg.c x86/ffmpeg_filter.c x86/ffmpeg_opt.c x86/cmdutils.c
      
        endif
      

      
    endif
      

      
endif
      

      
LOCAL_SHARED_LIBRARIES := libavformat libavcodec libswscale libavutil libswresample libavfilter libavdevice libpostproc
      

      
include $(BUILD_SHARED_LIBRARY)
      

      
ifeq ($(TARGET_ARCH_ABI),armeabi-v7a)
      

      
    $(call import-module,ffmpeg-3.3.4-armeabi/android/armeabi-v7a)
      

      
else
      

      
    ifeq ($(TARGET_ARCH_ABI),arm64-v8a)
      
            $(call import-module,ffmpeg-3.3.4-arm64-v8a/android/arm64-v8a)
      
    else
      

      
        ifeq ($(TARGET_ARCH_ABI),x86_64)
      
               $(call import-module,ffmpeg3.3.4-x86_64/android/x86_64)
      
        else
      
            $(call import-module,ffmpeg3.3.4-x86/android/i686-diasm)
      
        endif
      

      
    endif
      

      
endif

    • Created Application.mk file in my project.

      APP_ABI := armeabi-v7a, arm64-v8a, x86_64, x86
      
APP_PLATFORM := android-14

    • Created videoEdit.c than run ndk-build build command.

    Built with no error. I can run ffmpeg commands but it takes too much time i think. E.g when i try to run hflip it flips the video with 15 seconds.

    Code example :

    JNIEXPORT jint JNICALL Java_com_name_app_library_VideoEditer_natives_VideoEditer_flipHorizontally
    
(JNIEnv *env, jclass someclass, jstring inputFile, jstring outFile) {
    

    
    int numberOfArgs = 14;
    

    
    char** arguments = calloc(numberOfArgs, sizeof(char*));
    
    const char *in, *out;
    

    
    in = (*env)->GetStringUTFChars(env, inputFile, 0);
    
    out = (*env)->GetStringUTFChars(env, outFile, 0);
    

    
    arguments[0] = "ffmpeg";
    
    arguments[1] = "-i";
    
    arguments[2] = in;
    
    arguments[3] = "-c:v";
    
    arguments[4] = "libx264";
    
    arguments[5] = "-preset";
    
    arguments[6] = "ultrafast";
    
    arguments[7] = "-threads";
    
    arguments[8] = "5";
    
    arguments[9] = "-c:a";
    
    arguments[10] = "copy";
    
    arguments[11] = "-vf";
    
    arguments[12] = "hflip";
    
    arguments[13] = out;
    

    
    int i;
    
    for (i = 0; i < numberOfArgs; i++) {
    
        log_message(arguments[i]);
    
    }
    
    log_message("Printed all");
    

    
    main(numberOfArgs, arguments);
    
    free(arguments);
    
    (*env)->ReleaseStringUTFChars(env, inputFile, in);
    
    (*env)->ReleaseStringUTFChars(env, outFile, out);
    

    
    return 0;
    
}

    FFmpeg Commands that runs on android, working very fast on emaulator but very slow on real device.

    Also another thing to confusing my mind is output of ./configure command.
    When i open the (e.g) ffmpeg-3.3.4-arm64-v8a folder and run ./configure command in terminal. Output says ARCH   x86 (generic). For all platform output is the same ARCH   x86 (generic).

    Output of ./configure command in ffmpeg-3.3.4-arm64-v8a folder

    install prefix            /usr/local
    
source path               .
    
C compiler                gcc
    
C library                 glibc
    
ARCH                      x86 (generic)
    
big-endian                no
    
runtime cpu detection     yes
    
yasm                      yes
    
MMX enabled               yes
    
MMXEXT enabled            yes
    
3DNow! enabled            yes
    
3DNow! extended enabled   yes
    
SSE enabled               yes
    
SSSE3 enabled             yes
    
AESNI enabled             yes
    
AVX enabled               yes
    
XOP enabled               yes
    
FMA3 enabled              yes
    
FMA4 enabled              yes
    
i686 features enabled     yes
    
CMOV is fast              yes
    
EBX available             yes
    
EBP available             yes
    
debug symbols             yes
    
strip symbols             yes
    
optimize for size         no
    
optimizations             yes
    
static                    yes
    
shared                    no
    
postprocessing support    no
    
network support           yes
    
threading support         pthreads
    
safe bitstream reader     yes
    
texi2html enabled         no
    
perl enabled              yes
    
pod2man enabled           yes
    
makeinfo enabled          no
    
makeinfo supports HTML    no
    

    
External libraries:
    
iconv            xlib

    EDIT all of these steps made on ubuntu then moved all folders to the windows. So dont be confuse about paths.

    With all of these steps i want to ask is, is there anything wrong on my steps. Should i follow any other way or not ? Why the ffmpeg is running slower on real device. I am wondering one thing badly, how retrica, snapchat, instagram recording video as mirrored flipping ? Are they flipping after recorded (if they are how are they doing this in a second) or are they recording a video as flipped in run time ? I guess building ffmpeg for android is bit messy and making wrong things is very easy. If you look my steps, questions and give me an advice, i will be much appreciated.

  • Build FFmpeg for All Android architecture correctly

    22 octobre 2017, par fthopkins

    I built ffmpeg libraries for all android architecture. But some details are confusing my mind. First of all let me explain step by step how i built.

    • I downloaded latest version of libx264 from
      https://www.videolan.org/developers/x264.html
    • Created and run build_all.sh script (in x264 folder) for creating libs for (almost) all android platforms. Then i got android folder in x264 folder. e.g android/arm android/arm64 android/x86 android/x86_64 in x264 folder.
    • I download the ffmpeg3.3.4 from https://ffmpeg.org/download.html
    • I created 4 copies of ffmpeg3.3.4 folder. Named them with android architectures names.
      Like ffmpeg3.3.4-arm64 ffmpeg3.3.4-arm ffmpeg3.3.4-x86 ffmpeg3.3.4-x86_64
    • Created build_(architecture-name).sh for each platforms of android. Than move each one of 'named'.sh files to the named ffmpeg folders according to their architecture names.
      E.g build_android_x86.sh => ffmpeg3.3.4-x86

    build_android_arm64.sh example

    #!/bin/bash
    
#Change NDK to your Android NDK location
    
NDK=$HOME/Android/Sdk/ndk-bundle
    
PLATFORM=$NDK/platforms/android-21/arch-arm64/
    
PREBUILT=$NDK/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64
    

    
GENERAL="\
    
--enable-small \
    
--enable-cross-compile \
    
--extra-libs="-lgcc" \
    
--arch=aarch64 \
    
--cc=$PREBUILT/bin/aarch64-linux-android-gcc \
    
--cross-prefix=$PREBUILT/bin/aarch64-linux-android- \
    
--nm=$PREBUILT/bin/aarch64-linux-android-nm \
    
--extra-cflags="-I../x264/android/arm64/include" \
    
--extra-ldflags="-L../x264/android/arm64/lib" "
    

    
MODULES="\
    
--enable-gpl \
    
--enable-libx264"
    

    

    

    
function build_arm64
    
{
    
  ./configure \
    
  --logfile=conflog.txt \
    
  --target-os=linux \
    
  --prefix=./android/arm64-v8a \
    
  ${GENERAL} \
    
  --sysroot=$PLATFORM \
    
  --extra-cflags="" \
    
  --extra-ldflags="-lx264 -Wl,-rpath-link=$PLATFORM/usr/lib -L$PLATFORM/usr/lib -nostdlib -lc -lm -ldl -llog" \
    
  --enable-shared \
    
  --disable-static \
    
  --disable-doc \
    
  --enable-zlib \
    
  ${MODULES}
    

    
  make clean
    
  make
    
  make install
    
}
    

    
build_arm64
    

    

    
echo Android ARM64 builds finished
    • Moved all ffmpeg3.3.4-arm64 ffmpeg3.3.4-arm ffmpeg3.3.4-x86 ffmpeg3.3.4-x86_64 folders to the NDK_PATH (C:\Users\MyName\AppData\Local\Android\sdk\ndk-bundle)
    • Put x264 folder at same level of hierarchy with ffmpeg folders
      in (C:\Users\MyName\AppData\Local\Android\sdk\ndk-bundle)
    • Run each of build_android_x86.sh, build_android_x86_64.sh.. scripts one by one in their own ffmpeg folder. Then i got android folders in ffmpeg folders. (created android folders have library folders)
      e.g ffmpeg3.3.4-x86/android/x86/(bin,inlude,lib,share)

    • Created Android.mk files for all created android folders and moved each one of them to android/armName folder. e.g Android.mk => ffmpeg3.3.4-x86/android/x86/

      LOCAL_PATH:= $(call my-dir)
      

      
include $(CLEAR_VARS)
      
LOCAL_MODULE:= libavcodec
      
LOCAL_SRC_FILES:= lib/libavcodec-57.so
      
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
      
include $(PREBUILT_SHARED_LIBRARY)
      

      
include $(CLEAR_VARS)
      
LOCAL_MODULE:= libavformat
      
LOCAL_SRC_FILES:= lib/libavformat-57.so
      
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
      
include $(PREBUILT_SHARED_LIBRARY)
      

      
include $(CLEAR_VARS)
      
LOCAL_MODULE:= libswscale
      
LOCAL_SRC_FILES:= lib/libswscale-4.so
      
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
      
include $(PREBUILT_SHARED_LIBRARY)
      

      
include $(CLEAR_VARS)
      
LOCAL_MODULE:= libavutil
      
LOCAL_SRC_FILES:= lib/libavutil-55.so
      
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
      
include $(PREBUILT_SHARED_LIBRARY)
      

      
include $(CLEAR_VARS)
      
LOCAL_MODULE:= libavfilter
      
LOCAL_SRC_FILES:= lib/libavfilter-6.so
      
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
      
include $(PREBUILT_SHARED_LIBRARY)
      

      
include $(CLEAR_VARS)
      
LOCAL_MODULE:= libswresample
      
LOCAL_SRC_FILES:= lib/libswresample-2.so
      
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
      
include $(PREBUILT_SHARED_LIBRARY)
      

      
include $(CLEAR_VARS)
      
LOCAL_MODULE := postproc
      
LOCAL_SRC_FILES := lib/libpostproc-54.so
      
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
      
include $(PREBUILT_SHARED_LIBRARY)
      

      
include $(CLEAR_VARS)
      
LOCAL_MODULE := avdevice
      
LOCAL_SRC_FILES := lib/libavdevice-57.so
      
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
      
include $(PREBUILT_SHARED_LIBRARY)

    • Create "arm named" folders e.g x86 x86_4 arm64 arm7 in jni folder of my project (myproject/app/jni/x86, myproject/app/jni/x86_64).

    • Go to ndk path open named ffmpeg folders one by one and copy ffmpeg.c ffmpeg_filter.c ffmpeg_opt.c cmdutils.c files from ffmpeg folders to the "arm named" folders. e.g ffmpeg.c => myproject/app/jni/x86

    • Created Android.mk file in my project.

      LOCAL_PATH := $(call my-dir)
      
#$(warning $(LOCAL_PATH))
      

      
include $(CLEAR_VARS)
      
LOCAL_MODULE    := videoEdit
      
LOCAL_LDLIBS := -llog -ljnigraphics -lz -landroid
      
LOCAL_CFLAGS := -Wdeprecated-declarations
      
ANDROID_LIB := -landroid
      

      
$(info $(TARGET_ARCH_ABI))
      

      
ifeq ($(TARGET_ARCH_ABI),armeabi-v7a)
      
    LOCAL_C_INCLUDES:=/Users/MyName/AppData/Local/Android/sdk/ndk-bundle/sources/ffmpeg-3.3.4-armeabi
      
    LOCAL_SRC_FILES :=  videoEdit.c arm7/ffmpeg.c arm7/ffmpeg_filter.c arm7/ffmpeg_opt.c arm7/cmdutils.c
      
    LOCAL_CFLAGS += -lx264 -Wl,--no-merge-exidx-entries
      
else
      

      
    ifeq ($(TARGET_ARCH_ABI),arm64-v8a)
      
            LOCAL_C_INCLUDES:=/Users/MyName/AppData/Local/Android/sdk/ndk-bundle/sources/ffmpeg-3.3.4-arm64-v8a
      
            LOCAL_SRC_FILES :=  videoEdit.c arm64/ffmpeg.c arm64/ffmpeg_filter.c arm64/ffmpeg_opt.c arm64/cmdutils.c
      
            LOCAL_CFLAGS += -funwind-tables -Wl,--no-merge-exidx-entries
      
    else
      

      
        ifeq ($(TARGET_ARCH_ABI),x86_64)
      
               LOCAL_C_INCLUDES:=/Users/MyName/AppData/Local/Android/sdk/ndk-bundle/sources/ffmpeg3.3.4-x86_64
      
               LOCAL_SRC_FILES :=  videoEdit.c x86_64/ffmpeg.c x86_64/ffmpeg_filter.c x86_64/ffmpeg_opt.c x86_64/cmdutils.c
      
        else
      
                LOCAL_C_INCLUDES:=/Users/MyName/AppData/Local/Android/sdk/ndk-bundle/sources/ffmpeg3.3.4-x86
      
                LOCAL_SRC_FILES :=  videoEdit.c x86/ffmpeg.c x86/ffmpeg_filter.c x86/ffmpeg_opt.c x86/cmdutils.c
      
        endif
      

      
    endif
      

      
endif
      

      
LOCAL_SHARED_LIBRARIES := libavformat libavcodec libswscale libavutil libswresample libavfilter libavdevice libpostproc
      

      
include $(BUILD_SHARED_LIBRARY)
      

      
ifeq ($(TARGET_ARCH_ABI),armeabi-v7a)
      

      
    $(call import-module,ffmpeg-3.3.4-armeabi/android/armeabi-v7a)
      

      
else
      

      
    ifeq ($(TARGET_ARCH_ABI),arm64-v8a)
      
            $(call import-module,ffmpeg-3.3.4-arm64-v8a/android/arm64-v8a)
      
    else
      

      
        ifeq ($(TARGET_ARCH_ABI),x86_64)
      
               $(call import-module,ffmpeg3.3.4-x86_64/android/x86_64)
      
        else
      
            $(call import-module,ffmpeg3.3.4-x86/android/i686-diasm)
      
        endif
      

      
    endif
      

      
endif

    • Created Application.mk file in my project.

      APP_ABI := armeabi-v7a, arm64-v8a, x86_64, x86
      
APP_PLATFORM := android-14

    • Created videoEdit.c than run ndk-build build command.

    Built with no error. I can run ffmpeg commands but it takes too much time i think. E.g when i try to run hflip it flips the video with 15 seconds.

    Code example :

    JNIEXPORT jint JNICALL Java_com_name_app_library_VideoEditer_natives_VideoEditer_flipHorizontally
    
(JNIEnv *env, jclass someclass, jstring inputFile, jstring outFile) {
    

    
    int numberOfArgs = 14;
    

    
    char** arguments = calloc(numberOfArgs, sizeof(char*));
    
    const char *in, *out;
    

    
    in = (*env)->GetStringUTFChars(env, inputFile, 0);
    
    out = (*env)->GetStringUTFChars(env, outFile, 0);
    

    
    arguments[0] = "ffmpeg";
    
    arguments[1] = "-i";
    
    arguments[2] = in;
    
    arguments[3] = "-c:v";
    
    arguments[4] = "libx264";
    
    arguments[5] = "-preset";
    
    arguments[6] = "ultrafast";
    
    arguments[7] = "-threads";
    
    arguments[8] = "5";
    
    arguments[9] = "-c:a";
    
    arguments[10] = "copy";
    
    arguments[11] = "-vf";
    
    arguments[12] = "hflip";
    
    arguments[13] = out;
    

    
    int i;
    
    for (i = 0; i < numberOfArgs; i++) {
    
        log_message(arguments[i]);
    
    }
    
    log_message("Printed all");
    

    
    main(numberOfArgs, arguments);
    
    free(arguments);
    
    (*env)->ReleaseStringUTFChars(env, inputFile, in);
    
    (*env)->ReleaseStringUTFChars(env, outFile, out);
    

    
    return 0;
    
}

    Also another thing to confusing my mind is output of ./configure command.
    When i open the (e.g) ffmpeg-3.3.4-arm64-v8a folder and run ./configure command in terminal. Output says ARCH   x86 (generic). For all platform output is the same ARCH   x86 (generic). Commands run on emaulator very fast but very slow on real device.

    Output of ./configure command in ffmpeg-3.3.4-arm64-v8a folder

    install prefix            /usr/local
    
source path               .
    
C compiler                gcc
    
C library                 glibc
    
ARCH                      x86 (generic)
    
big-endian                no
    
runtime cpu detection     yes
    
yasm                      yes
    
MMX enabled               yes
    
MMXEXT enabled            yes
    
3DNow! enabled            yes
    
3DNow! extended enabled   yes
    
SSE enabled               yes
    
SSSE3 enabled             yes
    
AESNI enabled             yes
    
AVX enabled               yes
    
XOP enabled               yes
    
FMA3 enabled              yes
    
FMA4 enabled              yes
    
i686 features enabled     yes
    
CMOV is fast              yes
    
EBX available             yes
    
EBP available             yes
    
debug symbols             yes
    
strip symbols             yes
    
optimize for size         no
    
optimizations             yes
    
static                    yes
    
shared                    no
    
postprocessing support    no
    
network support           yes
    
threading support         pthreads
    
safe bitstream reader     yes
    
texi2html enabled         no
    
perl enabled              yes
    
pod2man enabled           yes
    
makeinfo enabled          no
    
makeinfo supports HTML    no
    

    
External libraries:
    
iconv            xlib

    EDIT all of these steps made on ubuntu then moved all folders to the windows. So dont be confuse about paths.

    With all of these steps i want to ask is, is there anything wrong on my steps. Should i follow any other way or not ? Why the ffmpeg is running slower on real device. I guess building ffmpeg for android is bit messy and making wrong things is very easy. If you look my steps, questions and give me an advice, i will be much appreciated.

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