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• compile FFmpeg → Android { error : crtend_android.o : No such file or directory }

  22 mars 2013, par Jason Tsai

  I'm trying to complie FFmpeg on Android 4.0 (SAMSUNG GT-3113), and I meet an error when I try to get config.h and config.mak files.
  I'm using android-ndk-r8d and cygwin.

  The config.sh file which I created is followed :

  #!/bin/bash
  
   PREBUILT=${ndk}/toolchains/arm-linux-androideabi-4.7/prebuilt/windows
  
   PLATFORM=android-14
  
   ARCH=--arch=arm
  
   ./configure \
  
   ${ARCH} \
  
   --target-os=linux --enable-cross-compile --cross-prefix=${PREBUILT}/bin/arm-linux-androideabi- \
  
   --extra-cflags=" -fPIC -DANDROID -std=c99 " \
  
   --enable-version3 \
  
   --enable-gpl \
  
   --enable-nonfree \
  
   --disable-stripping \
  
   --disable-ffmpeg\
  
   --disable-ffplay\
  
   --disable-ffserver\
  
   --disable-ffprobe \
  
   --disable-encoders \
  
   --disable-muxers \
  
   --disable-devices \
  
   --disable-protocols \
  
   --enable-protocol=file \
  
   --enable-avfilter \
  
   --disable-network \
  
   --disable-avdevice \
  
   --disable-asm \
  
   --enable-neon \
  
   --enable-armv5te \
  
   --sysinclude=${ndk}/platforms/${PLATFORM}/arch-arm/usr/include \
  
   --extra-ldflags="-Wl,-rpath-link=${NDK_ROOT}/platforms/${PLATFORM}/arch-arm/usr/lib
  
  -L${ndk}/platforms/${PLATFORM}/arch-arm/usr/lib -nostdlib
  
  ${ndk}/platforms/${PLATFORM}/arch-arm/usr/lib/crtbegin_static.o
  
  ${ndk}/platforms/${PLATFORM}/arch-arm/usr/lib/crtend_android.o -lc -lm -ldl "

  After I run the config.sh with cygwin,it shows
  http://cygwin.com/cygwin-ug-net/using.html#using-pathnames/home/jason_tsai/android-ndk-r8d/toolchains/arm-linux-androideabi-4.7/prebuilt/windows/bin/arm-linux-androideabi-gcc is unable to create an executable file.C compiler test failed.

  I looked the logfile and it said
  arm-linux-androideabi-gcc.exe : error : /home/jason_tsai/android-ndk-r8d/platforms/android-14/arch-arm/usr/lib/crtend_android.o : No such file or directory
  C compiler test failed.

  I'm really very confusing.
  Any help will be appreciated. Thanks !!

• How do I set a relative path for an .SO file ?

  1er juillet 2015, par Eran Boudjnah

  This is my error :

  06-29 16:52:37.729 24144-24144/com.my.app E/AndroidRuntime﹕ FATAL
  EXCEPTION : main
  Process : com.my.app, PID : 24144
  java.lang.UnsatisfiedLinkError : dlopen failed : could not load library "build/obj/local/armeabi/libavformat.so" needed by
  "libFFmpegWrapper.so" ; caused by library
  "build/obj/local/armeabi/libavformat.so" not found

  build/obj/local/armeabi/libavformat.so looks wrong to me. The code worked with an earlier build of ffmpeg - so I suspect it’s something to do with the way I build ffmpeg.

  The libavformat.so file is in the APK where I’d expect it to be.

  This is my build script for ffmpeg :

  #!/bin/bash
  
  
  
  NDK=/Users/eran/Downloads/android-ndk-r10e
  
  PREBUILT=$NDK/toolchains/arm-linux-androideabi-4.9/prebuilt/darwin-x86_64
  
  PLATFORM=$NDK/platforms/android-12/arch-arm
  
  PREFIX=/usr/local
  
  
  
  function build_one
  
  {
  
    ./configure --target-os=android --prefix=$PREFIX \
  
    --pkg-config=./fake-pkg-config \
  
    --enable-cross-compile \
  
    --cpu=armv7-a \
  
    --enable-shared \
  
    --disable-static \
  
    --disable-asm \
  
    --arch=arm \
  
    --cc=$PREBUILT/bin/arm-linux-androideabi-gcc \
  
    --cross-prefix=$PREBUILT/bin/arm-linux-androideabi- \
  
    --disable-stripping \
  
    --nm=$PREBUILT/bin/arm-linux-androideabi-nm \
  
    --sysroot=$PLATFORM \
  
    --disable-nonfree \
  
    --disable-version3 \
  
    --disable-everything \
  
    --enable-gpl \
  
    --disable-doc \
  
    --enable-avresample \
  
    --disable-demuxer=rtsp \
  
    --disable-muxer=rtsp \
  
    --disable-ffplay \
  
    --disable-ffserver \
  
    --enable-ffmpeg \
  
    --disable-ffprobe \
  
    --enable-libx264 \
  
    --enable-encoder=libx264 \
  
    --enable-decoder=h264 \
  
    --disable-protocol=rtp \
  
    --enable-hwaccels \
  
    --enable-zlib \
  
    --disable-devices \
  
    --disable-avdevice \
  
    --extra-cflags="-I/usr/local/include -fPIC -DANDROID -Wno-deprecated -mfloat-abi=softfp -mfpu=neon -march=armv7-a" \
  
    --extra-ldflags="-L/usr/local/lib -Wl,--fix-cortex-a8" \
  
    --extra-cxxflags='-Wno-multichar -fno-exceptions -fno-rtti'
  
    make -j4 install
  
  }
  
  
  
  build_one

• how can I execute "ffmpeg -video_size 1024x768 -framerate 25 -f x11grab -i :0.0+100,200 output.mp4" command in nodejs

  26 juin 2017, par varun_nagar

  As I am new to Node and started working on cross platform desktop application using NWjs please assist me how to execute "ffmpeg -video_size 1024x768 -framerate 25 -f x11grab -i :0.0+100,200 output.mp4" command in nodejs.