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• how to configure ffmpeg for android on windows ?

  26 octobre 2023, par charlieChen

  I have download android-ndk-r20b，ffmpeg on win10 desktop, and msys2 environment to configure the ffmpeg, i have a script file to compile ffmpeg named "ffmpeg.sh" :

  


  #!/bin/bash
BASEDIR=$(pwd)
TOOLCHAIN_PREFIX=/d/softwareToInstall/NDK/android-ndk-r20b/toolchains/llvm/prebuilt/windows/bin
CFLAGS='-U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all'
LDFLAGS='-Wl,-z,relro -Wl,-z,now -pie'

./configure \
--target-os=android \
--prefix=../installationForAndroid \
--cross-prefix=$TOOLCHAIN_PREFIX/  \
--cc=$TOOLCHAIN_PREFIX/armv7a-linux-androideabi24-clang \
--cxx=$TOOLCHAIN_PREFIX/armv7a-linux-androideabi24-clang++ \
--ld=$TOOLCHAIN_PREFIX/arm-linux-androideabi-ld \
--nm=$TOOLCHAIN_PREFIX/arm-linux-androideabi-nm \
--arch=armv7a \
--enable-runtime-cpudetect \
--sysroot=/d/softwareToInstall/NDK/android-ndk-r20b/toolchains/llvm/prebuilt/windows/sysroot  \
--enable-pic \
--enable-pthreads \
--enable-cross-compile \
--disable-debug \
--enable-version3 \
--enable-hardcoded-tables \
--disable-ffplay \
--disable-ffprobe \
--disable-pthreads \
--enable-gpl \
--disable-x86asm \
--enable-yasm \
--disable-doc \
--disable-shared \
--enable-static 


  


  the i build ffmpeg with those commands :

  


  $ cd ffmpeg-6.0
$ ./ffmpeg.sh
...
$make -j4
$ make -j4


  


  than it report errors :

  


  enter image description here

  


  how to configure it ? i want compile ffmpeg for android on window10

  


• How to set pad with PHP-FFMpeg ?

  15 septembre 2020, par DenVebber

  I use PHP-FFMpeg library (https://github.com/PHP-FFMpeg/PHP-FFMpeg) and try to do this :

  


  ffmpeg -i input.mp4 -vf "crop=960:1080, scale=960:1080,pad=w=960+iw:h=ih:x=960:y=0" output.mp4


  


  I have a video with dimensions 1920x1080. In php I do this :

  


  $video = $ffmpeg->open('input.mp4');
$video->filters()->crop(new FFMpeg\Coordinate\Point(480, 0, true), new FFMpeg\Coordinate\Dimension(960, 1080));
$video->save(new FFMpeg\Format\Video\x264('aac'), 'output.mp4');


  


  I get a cropped video in the center of the frame but not on the right side. How can I move output.mp4 or set the correct starting point ?

  


• How to build FFmpeg Executable binary for Android on Mac OS ?

  26 août 2016, par TOP

  I’m a new beginner with FFmpeg. All I need is FFmpeg executable binary for Android. I followed the great tutorial from roman10.net

  Here is my build_android.sh file :

      #!/bin/bash
  
  NDK=/Users/sunshine/Documents/android-ndk-r11-linux-x86_64
  
  SYSROOT=$NDK/platforms/android-21/arch-arm/
  
  TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64
  
  function build_one
  
  {
  
  ./configure \
  
      --prefix=$PREFIX \
  
      --enable-shared \
  
      --enable-static \
  
      --disable-doc \
  
      --disable-ffplay \
  
      --disable-ffprobe \
  
      --disable-ffserver \
  
      --enable-libmp3lame\
  
      --disable-doc \
  
      --disable-symver \
  
      --cross-prefix=$TOOLCHAIN/bin/arm-linux-androideabi- \
  
      --target-os=linux \
  
      --arch=arm \
  
      --enable-cross-compile \
  
      --sysroot=$SYSROOT \
  
      --extra-cflags="-Os -fpic $ADDI_CFLAGS" \
  
      --extra-ldflags="$ADDI_LDFLAGS" \
  
      $ADDITIONAL_CONFIGURE_FLAG
  
  make clean
  
  make
  
  make install
  
  }
  
  CPU=arm
  
  PREFIX=$(pwd)/android/$CPU 
  
  ADDI_CFLAGS="-marm"
  
  build_one

  The tutorial says :

  Once it’s done, you should be able to find a folder
  $NDK/sources/ffmpeg-2.0.1/android

  In my case, the build process is done, but I don’t see any android folder. Some new files are created in the same folder with build_android.sh file. Where is my mistake ?