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    13 juin 2013

    Puis-je poster des contenus à partir d’une tablette Ipad ?
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    13 avril 2011

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Sur d’autres sites (11901)

  • 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

  • H264 HW Decoding on Android Using FFmpeg-10

    21 septembre 2012, par limitfan

    I've noticed that ffmpeg has already included (libavcodec/libstagefright.cpp) and claimed to support H264's hardware decoding through StageFright framework. I've build the shared library according to (tools/build_libstagefright). But when doing real H264 frame decoding, it seems to be failed at Stagefright_init().
    Does anybody succeed to use this new feature ? Thank you in advance.

  • 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

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