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• Build FFMPEG with x264 for Android

  26 mai 2023, par Kage

  I am trying to build FFMPEG with libx264 for Android.

  



  I can successfully build and use FFMPEG for Android but I realized that I need the ability to encode, therefore I am trying to build FFMPEG with x264.

  



  I am using this tutorial to build FFmpeg for Android http://www.roman10.net/how-to-build-ffmpeg-for-android/

  



  When trying to build FFMPEG I get an error :

  



  


  "ERROR : libx264 not found"

  


  



  And in my log it says :

  



  


  "/usr/local/lib/libx264.a : could not read symbols : Archive has no
 index ; run ranlib to add one..."

  


  



  I have the latest versions of both FFMPEG and x264.
I understand that FFMPEG looks for the header and libraries in usr/lib and usr/include, so in order to make it find x264 I use the cflags and ldflags :

  



  

  • —extra-cflags = " -I/usr/local/include "

  


  • —extra-ldflags = " -L/usr/local/lib "

  


  



  I have tried building x264 with many different options that other people on the internet have said that i need. eg. —enable-shared, —enable-static, —disable-pthreads etc.
Some forums say enable this, others say no disable that.

  



  Any help would be much appreciated,
Thanks

  



  EDIT :

  



  If I build FFmpeg with the simplest commands to include libx264 then it works.
ie.

  



  ./configure --enable-gpl --enable-libx264 --extra-cflags="-I/usr/local/include" --extra-ldflags="-L/usr/local/lib" --enable-static --enable-shared


  



  However I need it to work for Android. The script I am using is :

  



  NDK=~/Desktop/android-ndk-r7
PLATFORM=$NDK/platforms/android-8/arch-arm/
PREBUILT=$NDK/toolchains/arm-linux-androideabi-4.4.3/prebuilt/darwin-x86
function build_one
{
./configure --target-os=linux \
    --prefix=$PREFIX \
    --enable-cross-compile \
    --enable-shared \
    --enable-static \
    --extra-libs="-lgcc" \
    --arch=arm \
    --cc=$PREBUILT/bin/arm-linux-androideabi-gcc \
    --cross-prefix=$PREBUILT/bin/arm-linux-androideabi- \
    --nm=$PREBUILT/bin/arm-linux-androideabi-nm \
    --sysroot=$PLATFORM \
    --extra-cflags=" -O3 -fpic -DANDROID -DHAVE_SYS_UIO_H=1 -Dipv6mr_interface=ipv6mr_ifindex -fasm -Wno-psabi -fno-short-enums -fno-strict-aliasing -finline-limit=300 $OPTIMIZE_CFLAGS -I/usr/local/include" \
    --extra-ldflags="-Wl,-rpath-link=$PLATFORM/usr/lib -L $PLATFORM/usr/lib -nostdlib -lc -lm -ldl -llog -L/usr/local/lib " \
    --enable-gpl \
    --enable-libx264 \
    --disable-everything \
    --enable-demuxer=mov \
    --enable-demuxer=h264 \
    --disable-ffplay \
    --enable-protocol=file \
    --enable-avformat \
    --enable-avcodec \
    --enable-decoder=rawvideo \
    --enable-decoder=mjpeg \
    --enable-decoder=h263 \
    --enable-decoder=mpeg4 \
    --enable-decoder=h264 \
    --enable-encoder=mjpeg \
    --enable-encoder=h263 \
    --enable-encoder=mpeg4 \
    --enable-encoder=h264 \
    --enable-parser=h264 \
    --disable-network \
    --enable-zlib \
    --disable-avfilter \
    --disable-avdevice \
    $ADDITIONAL_CONFIGURE_FLAG

make clean
make  -j4 install
$PREBUILT/bin/arm-linux-androideabi-ar d libavcodec/libavcodec.a inverse.o
$PREBUILT/bin/arm-linux-androideabi-ld -rpath-link=$PLATFORM/usr/lib -L$PLATFORM/usr/lib  -soname libffmpeg.so -shared -nostdlib  -z,noexecstack -Bsymbolic --whole-archive --no-undefined -o $PREFIX/libffmpeg.so libavcodec/libavcodec.a libavformat/libavformat.a libavutil/libavutil.a libswscale/libswscale.a -lc -lm -lz -ldl -llog  --warn-once  --dynamic-linker=/system/bin/linker $PREBUILT/lib/gcc/arm-linux-androideabi/4.4.3/libgcc.a
}

CPU=armv7-a
OPTIMIZE_CFLAGS="-mfloat-abi=softfp -mfpu=vfpv3-d16 -marm -march=$CPU "
PREFIX=./android/$CPU
ADDITIONAL_CONFIGURE_FLAG=
build_one


  



  I am guessing that some option in my configure command is conflicting with enabling libx264

  



  NOTE : If I remove —enable-libx264 then it works

  


• ffmpeg bitrate/quality selection

  18 octobre 2020, par user209405

  I'm attempting to copy videos from a site. They are stored in 6 different resolutions, as an hls stream format. When I use the command ffmpeg -i http://c.brightcove.com/services/mobile/streaming/index/master.m3u8?videoId=5506754630001 -c copy output.ts I get the highest quality (1280x720). However, when I wget the .m3u8 I can see there are other qualities but am having trouble with how to copy those quality (i.e. 640x380). the original link is http://www.sportsnet.ca/hockey/nhl/analyzing-five-potential-trade-destinations-matt-duchene/.

  



  I'm hoping someone can help me out with this. Thank you.

  


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

  12 novembre 2016, par Codeveloper

  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.. :-)