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• Compiling x265 with ffmpeg for Android and receiving errors

  5 juillet 2019, par m33ts4k0z

  Trying to compile x265 for use with arm64-v8a. After successuful build of x265 itself, I receive the following error when ffmpeg is about to compile :

  require_pkg_config libx265 x265 x265.h x265_api_get
  
  check_pkg_config libx265 x265 x265.h x265_api_get
  
  test_pkg_config libx265 x265 x265.h x265_api_get
  
  /root/ffmpeg_android/ffmpeg-android-1.6.3/ffmpeg-pkg-config --exists --print-errors x265
  
  check_func_headers x265.h x265_api_get -I/root/ffmpeg_android/ffmpeg-android-1.6.3/jni/x265/android/arm64-v8a/include/x265 -L/root/ffmpeg_android/ffmpeg-android-1.6.3/jni/x265/android/arm64-v8a/lib -lx265
  
  test_ld cc -I/root/ffmpeg_android/ffmpeg-android-1.6.3/jni/x265/android/arm64-v8a/include/x265 -L/root/ffmpeg_android/ffmpeg-android-1.6.3/jni/x265/android/arm64-v8a/lib -lx265
  
  test_cc -I/root/ffmpeg_android/ffmpeg-android-1.6.3/jni/x265/android/arm64-v8a/include/x265 -L/root/ffmpeg_android/ffmpeg-android-1.6.3/jni/x265/android/arm64-v8a/lib
  
  BEGIN /tmp/ffconf.xKyjnplW/test.c
  
      1   #include 
  
      2   #include 
  
      3   long check_x265_api_get(void) { return (long) x265_api_get; }
  
      4   int main(void) { int ret = 0;
  
      5    ret |= ((intptr_t)check_x265_api_get) & 0xFFFF;
  
      6   return ret; }
  
  END /tmp/ffconf.xKyjnplW/test.c
  
  /root/ffmpeg_android/ffmpeg-android-1.6.3/toolchain-android/bin/aarch64-linux-android-clang -DANDROID -fpic -fpie -march=armv8-a --sysroot=/root/ffmpeg_android/ffmpeg-android-1.6.3/toolchain-android/sysroot -D_ISOC99_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Dstrtod=avpriv_strtod -DPIC -DANDROID -fpic -fpie -march=armv8-a -I/root/ffmpeg_android/ffmpeg-android-1.6.3/jni/vpx/android/arm64-v8a/include -I/root/ffmpeg_android/ffmpeg-android-1.6.3/jni/x264/android/arm64-v8a/include/x264 -I/root/ffmpeg_android/ffmpeg-android-1.6.3/jni/x265/android/arm64-v8a/include/x265 -I/root/ffmpeg_android/ffmpeg-android-1.6.3/jni/lame/android/arm64-v8a/include -DANDROID -fpic -fpie -march=armv8-a --static -mcpu=cortex-a57 -std=c11 -fPIE -fomit-frame-pointer -fPIC -I/root/ffmpeg_android/ffmpeg-android-1.6.3/jni/x265/android/arm64-v8a/include/x265 -L/root/ffmpeg_android/ffmpeg-android-1.6.3/jni/x265/android/arm64-v8a/lib -c -o /tmp/ffconf.xKyjnplW/test.o /tmp/ffconf.xKyjnplW/test.c
  
  clang60: warning: argument unused during compilation: '-L/root/ffmpeg_android/ffmpeg-android-1.6.3/jni/x265/android/arm64-v8a/lib' [-Wunused-command-line-argument]
  
  /root/ffmpeg_android/ffmpeg-android-1.6.3/toolchain-android/bin/aarch64-linux-android-clang -Wl,-z,defs -Wl,--unresolved-symbols=report-all -march=armv8-a -L/root/ffmpeg_android/ffmpeg-android-1.6.3/toolchain-android/sysroot -Wl,-z,relro -Wl,-z,now -L/root/ffmpeg_android/ffmpeg-android-1.6.3/jni/vpx/android/arm64-v8a/lib -L/root/ffmpeg_android/ffmpeg-android-1.6.3/jni/x264/android/arm64-v8a/lib -L/root/ffmpeg_android/ffmpeg-android-1.6.3/jni/x265/android/arm64-v8a/lib -L/root/ffmpeg_android/ffmpeg-android-1.6.3/jni/lame/android/arm64-v8a/lib -Wl,-z,defs -Wl,--unresolved-symbols=report-all -march=armv8-a -L/root/ffmpeg_android/ffmpeg-android-1.6.3/toolchain-android/sysroot -Wl,-z,relro -Wl,-z,now --static --sysroot=/root/ffmpeg_android/ffmpeg-android-1.6.3/toolchain-android/sysroot -mcpu=cortex-a57 -Wl,--as-needed -Wl,-z,noexecstack -fPIE -pie -I/root/ffmpeg_android/ffmpeg-android-1.6.3/jni/x265/android/arm64-v8a/include/x265 -L/root/ffmpeg_android/ffmpeg-android-1.6.3/jni/x265/android/arm64-v8a/lib -o /tmp/ffconf.xKyjnplW/test /tmp/ffconf.xKyjnplW/test.o -lx265 -lgcc
  
  clang60: warning: argument unused during compilation: '-pie' [-Wunused-command-line-argument]
  
  /root/ffmpeg_android/ffmpeg-android-1.6.3/toolchain-android/bin/../lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin/ld: skipping incompatible /root/ffmpeg_android/ffmpeg-android-1.6.3/jni/x265/android/arm64-v8a/lib/libx265.a when searching for -lx265
  
  /root/ffmpeg_android/ffmpeg-android-1.6.3/toolchain-android/bin/../lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin/ld: skipping incompatible /root/ffmpeg_android/ffmpeg-android-1.6.3/jni/x265/android/arm64-v8a/lib/libx265.a when searching for -lx265
  
  /root/ffmpeg_android/ffmpeg-android-1.6.3/toolchain-android/bin/../lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin/ld: cannot find -lx265
  
  clang60: error: linker command failed with exit code 1 (use -v to see invocation)
  
  ERROR: x265 not found using pkg-config

  I use ffmpeg 4.1.3 and the latest version of x265 sources. I use this project to compile and I have succeeded when building without x265. I compile on Debian Buster x64.

• avformat/matroskadec : Accept more unknown-length elements

  17 mai 2019, par Andreas Rheinhardt

  avformat/matroskadec : Accept more unknown-length elements
  The current Matroska specifications mandate that only two elements may
  
  use an unknown-length length : Segments and clusters. But this was not
  
  always so : For the greater part of Matroska's existence, all master
  
  elements were allowed to make use of the unknown-length feature.
  And there were muxers creating such files : For several years
  
  libavformat's Matroska muxer used unknown-length for all master
  
  elements when the output wasn't seekable. This only stopped in March
  
  2010 with 2529bb30. And even afterwards it was possible (albeit
  
  unlikely) for libavformat to create unknown-length master elements
  
  that are in violation of today's specifications, namely if the master
  
  element was so big that the seek backwards to update the size could
  
  no longer be performed inside the AVIOContext's write buffer. This
  
  has only been fixed in October 2016 (with the patches that introduced
  
  support for writing CRC-32 elements).
  Libavformat's Matroska demuxer meanwhile has never really supported
  
  unknown-length elements besides segments and clusters. Support for the
  
  latter was hardcoded. This commit changes this : Now all master elements
  
  for which a syntax to parse them is available are supported. This
  
  includes the files produced by old versions of libavformat's muxer.
  More precisely, master elements that have unknown length and are about
  
  to be parsed (not skipped) are supported ; only a warning is emitted for
  
  them. For normal files, this means that level 1 elements after the
  
  clusters that are encountered after the clusters have been parsed (i.e.
  
  not because they are referenced by the seekhead at the beginning of the
  
  file) are still unsupported (they would be skipped at this point if
  
  their length were known).
  Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
  

  • [DH] libavformat/matroskadec.c

• Compiling FFMPEG with x265 has ERROR : x265 not found using pkg-config

  23 mars 2023, par timweiliu

  At first, I have a project with ffmpeg build support x264 for android in Mac OS.

  



  Now, I want to add x265 support.

  



  I have compiled the x265 with make & make install like this :

  



  [ 81%] Built target x265-static
[100%] Built target cli
Install the project...
-- Install configuration: "Release"
-- Up-to-date: /usr/local/lib/libx265.a
-- Up-to-date: /usr/local/include/x265.h
-- Up-to-date: /usr/local/include/x265_config.h
-- Up-to-date: /usr/local/lib/pkgconfig/x265.pc
-- Up-to-date: /usr/local/bin/x265


  



  and then, I run this shell script :

  



  make distclean 

NDK_PATH=$NDK_HOME
NDK_ARM_PATH=${NDK_PATH}/platforms/android-9/arch-arm
NDK_ARM_BIN_PATH=${NDK_PATH}/toolchains/arm-linux-androideabi-4.9/prebuilt/darwin-x86_64/bin

CC=${NDK_ARM_BIN_PATH}/arm-linux-androideabi-gcc

chmod +x configure
chmod +x version.sh

if [ $APP_ABI = "armeabi-v7a" ]; then
LOCAL_CFLAGS="-O3 -DANDROID -fpic -I/usr/local/include -march=armv7-a -mfloat-abi=softfp -mfpu=neon"
ABLES="--enable-asm --enable-thumb --enable-hwaccels --cpu=armv7-a --enable-neon"
elif [ $APP_ABI = "armeabi" ]; then
LOCAL_CFLAGS="-O3 -DANDROID -fpic -I/usr/local/include"
ABLES="--disable-neon"
fi
echo $LOCAL_CFLAGS
echo $ABLES
echo $PKG_CONFIG_PATH

echo "开始configure"
./configure \
--disable-yasm \
--disable-debug \
--disable-doc \
--disable-ffmpeg \
--disable-ffprobe \
--disable-ffplay \
--disable-ffserver \
--disable-stripping \
--disable-avdevice \
--disable-postproc \
--disable-network \
--enable-pthreads \
--enable-small \
--disable-encoders \
--enable-encoder=libx264 \
--enable-encoder=libfdk_aac \
--enable-libx265 \
--pkg-config-flags="--static" \
...

echo "开始make"
make -j4

echo "开始install"
sudo make install


  



  It results in an error :

  



  -O3 -DANDROID -fpic -I/usr/local/include -march=armv7-a -mfloat-abi=softfp -mfpu=neon
--enable-asm --enable-thumb --enable-hwaccels --cpu=armv7-a --enable-neon
/usr/local/lib/pkgconfig
开始configure
ERROR: x265 not found using pkg-config


  



  I looked at the config.log :

  



  use_pkg_config x265 x265.h x265_api_get
check_pkg_config x265 x265.h x265_api_get
false --exists --print-errors x265
ERROR: x265 not found using pkg-config


  



  but, the file of x265.pc is existing on the path. Its content is :

  



  prefix=/usr/local
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
includedir=${prefix}/include

Name: x265
Description: H.265/HEVC video encoder
Version: 0.0
Libs: -L${libdir} -lx265
Libs.private: -lstdc++ -lm -lgcc -ldl -lgcc -ldl
Cflags: -I${includedir}


  



  and the x265.h is in include path too.

  



  I run

  



  pkg-config --list-all


  



  It also finds x265 :

  



  TIMWEILIU-MC0:libSrc timweiliu$ pkg-config --list-all
libecpg_compat libecpg_compat - PostgreSQL libecpg_compat library
fdk-aac        Fraunhofer FDK AAC Codec Library - AAC codec library
apr-1          APR - The Apache Portable Runtime library
apr-util-1     APR Utils - Companion library for APR
libpq          libpq - PostgreSQL libpq library
libpcre        libpcre - PCRE - Perl compatible regular expressions C library with 8 bit character support
libpgtypes     libpgtypes - PostgreSQL libpgtypes library
libecpg        libecpg - PostgreSQL libecpg library
x264           x264 - H.264 (MPEG4 AVC) encoder library
x265           x265 - H.265/HEVC video encoder
libpcreposix   libpcreposix - PCREPosix - Posix compatible interface to libpcre
libiodbc       iODBC - iODBC Driver Manager


  



  Now, I don’t know why it does not work.
Why does pkg-config still not find the x265 ?