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• ffmpeg : move a local variable definition later.

  6 mai 2013, par Nicolas George

  ffmpeg : move a local variable definition later.
  Fix a segfault when using the -map option without input files.
  

  • [DH] ffmpeg_opt.c

• Revision 5ab920d2ae : Using local variable for token_cache. The difference with the old code is that

  3 décembre 2013, par Dmitry Kovalev

  Changed Paths :
   Modify /vp9/decoder/vp9_decodeframe.c

  
   Modify /vp9/decoder/vp9_detokenize.c

  
   Modify /vp9/decoder/vp9_detokenize.h

  
   Modify /vp9/decoder/vp9_onyxd_int.h

  
  
  Using local variable for token_cache.

  The difference with the old code is that originally the whole token_cache
  was initialized with zeros at the beginning of decode_coefs() function.
  Now we set several zero values explicitly with "token_cache[scan[c]] = 0".

  Change-Id : I88cc5031f01d13012d1a4491739c36cb44f9401e

• Making and displaying a video

  4 mars 2018, par Mehdi Shojaeian

  I have to develop an app which shoud crop and cut video .
  I decide to use ffmpeg and I tested below library :
  https://github.com/WritingMinds/ffmpeg-android-java

  but I get [libx264 @ 0xf506d400] using cpu capabilities: none!at console and running so so slowly.

  so I decide to build my own ffmpeg prebuilt and try my hard and test below link for make prebuild ffmpeg :

  • https://github.com/WritingMinds/ffmpeg-android
    
  • https://github.com/WritingMinds/ffmpeg-android-java
    
  • http://writingminds.github.io/ffmpeg-android/
    
  • http://writingminds.github.io/ffmpeg-android-java/
    and so much more

  But enety build has own error, such as "couldn’t find c comiler"
  After too many search I found and build ffmpeg but the result is some .so file (listed below) :
  

  • libavcodec-58.so
  • libavdevice-58.so
  • libavformat-58.so
  • libavutil-56.so
  • libpostproc-55.so
  • libswresample-3.so
  • libswscale-5.so

  my build.sh is :

  NDK=/Users/mehdi/Documents/adt-bundle-mac-x86_64-20140702/ndk/android-ndk-r13b
  
  SYSROOT=$NDK/platforms/android-24/arch-arm/
  
  TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.9/prebuilt/darwin-x86_64
  
  function build_one
  
  {
  
  ./configure \
  
      --prefix=$PREFIX \
  
      --enable-shared \
  
      --disable-static \
  
      --disable-doc \
  
      --disable-ffmpeg \
  
      --disable-ffplay \
  
      --disable-ffprobe \
  
      --enable-avdevice \
  
      --disable-doc \
  
      --disable-symver \
  
      --cross-prefix=$TOOLCHAIN/bin/arm-linux-androideabi- \
  
      --target-os=linux \
  
      --cpu=cortex-a8 \
  
      --arch=arm \
  
      --enable-cross-compile \
  
      --sysroot=$SYSROOT \
  
      --extra-cflags="-Os -fpic $ADDI_CFLAGS" \
  
      --extra-ldflags="$ADDI_LDFLAGS" \
  
      --enable-runtime-cpudetect \
  
      --enable-gpl \
  
      --enable-avfilter \
  
      --enable-encoders  \
  
      --enable-muxers \
  
      --enable-protocols  \
  
      --enable-parsers \
  
      --enable-demuxers \
  
      --enable-decoders \
  
      --enable-bsfs \
  
      --enable-network \
  
      --enable-swscale  \
  
      --enable-asm 
  
  
  
      $ADDITIONAL_CONFIGURE_FLAG
  
  make clean
  
  make
  
  make install
  
  }
  
  CPU=arm
  
  PREFIX=$(pwd)/android/$CPU 
  
  ADDI_CFLAGS="-marm"
  
  build_one

  and I put .so files into cpp folder in android studio and make CMakeLists.txt.
  every thing is ok up to now but where can I found ffmpeg file to execute command in java .