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• Build FFMPEG with x264 for Android

  12 novembre 2016, 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

• avconv : make -t insert trim/atrim filters.

  10 avril 2013, par Anton Khirnov

  avconv : make -t insert trim/atrim filters.
  This makes -t sample-accurate for audio and will allow further
  
  simplication in the future.
  Most of the FATE changes are due to audio now being sample accurate. In
  
  some cases a video frame was incorrectly passed with the old code, while
  
  its was over the limit.
  

  • [DBH] Changelog
  • [DBH] avconv.c
  • [DBH] avconv_filter.c
  • [DBH] tests/ref/fate/adpcm-ms-mono
  • [DBH] tests/ref/fate/bethsoft-vid
  • [DBH] tests/ref/fate/cyberia-c93
  • [DBH] tests/ref/fate/msvideo1-8bit
  • [DBH] tests/ref/lavf/aiff
  • [DBH] tests/ref/lavf/alaw
  • [DBH] tests/ref/lavf/asf
  • [DBH] tests/ref/lavf/au
  • [DBH] tests/ref/lavf/avi
  • [DBH] tests/ref/lavf/bmp
  • [DBH] tests/ref/lavf/dpx
  • [DBH] tests/ref/lavf/ffm
  • [DBH] tests/ref/lavf/gxf
  • [DBH] tests/ref/lavf/jpg
  • [DBH] tests/ref/lavf/mkv
  • [DBH] tests/ref/lavf/mmf
  • [DBH] tests/ref/lavf/mov
  • [DBH] tests/ref/lavf/mpg
  • [DBH] tests/ref/lavf/mulaw
  • [DBH] tests/ref/lavf/nut
  • [DBH] tests/ref/lavf/ogg
  • [DBH] tests/ref/lavf/pam
  • [DBH] tests/ref/lavf/pcx
  • [DBH] tests/ref/lavf/pgm
  • [DBH] tests/ref/lavf/png
  • [DBH] tests/ref/lavf/ppm
  • [DBH] tests/ref/lavf/rm
  • [DBH] tests/ref/lavf/rso
  • [DBH] tests/ref/lavf/sgi
  • [DBH] tests/ref/lavf/sox
  • [DBH] tests/ref/lavf/sunrast
  • [DBH] tests/ref/lavf/tga
  • [DBH] tests/ref/lavf/tiff
  • [DBH] tests/ref/lavf/ts
  • [DBH] tests/ref/lavf/voc
  • [DBH] tests/ref/lavf/voc_s16
  • [DBH] tests/ref/lavf/wav
  • [DBH] tests/ref/lavf/xwd
  • [DBH] tests/ref/seek/lavf-alaw
  • [DBH] tests/ref/seek/lavf-mulaw

• Revision 21ff7bdc72 : Adjustments to key frame sizing. Adjustments take heavier account of the frame

  16 avril 2013, par Paul Wilkins

  Changed Paths : Modify /vp9/encoder/vp9_firstpass.c Modify /vp9/encoder/vp9_onyx_if.c Adjustments to key frame sizing. Adjustments take heavier account of the frame near a kf in deciding boost and limit the total number that can contribute. Also adjusted the minq calculations such that in most (...)