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  • FFmpeg has text relocation's.This is wasting memory and prevents security hardening

    6 février 2018, par Sagar Hudge

    I am getting following exception on video trimming.

    video path : /storage/emulated/0/Pictures/Instagram/Fast & Furious 7 - Get Low Extended Version Video.mp4

    I have found the issue ,it is causing due to the file name having spaces in between them you can check in above mentioned path and in exception.

    after changing file name its working but changing name of every file from device its not the right way so how can I solve this exception

    FAILED with output : WARNING: linker: /data/user/0/com.example.SeekBarActivity/files/ffmpeg 
    
has text relocations. This is wasting memory and prevents security hardening.
    
Please fix. ffmpeg version n2.4.2 Copyright (c) 2000-2014 the FFmpeg developers
    

    
built on Oct  7 2014 15:08:46 with gcc 4.8 (GCC)
    
configuration: --target-os=linux --cross-prefix=/home/sb/Source-Code/ffmpeg-
    
android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --
    
cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/sb/Source-
    
Code/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 
    
--enable-libass --enable-libfreetype --enable-libfribidi --enable-fontconfig 
    
--enable-pthreads --disable-debug --disable-ffserver --enable-version3 --
    
enable-hardcoded-tables --disable-ffplay --disable-ffprobe --enable-gpl --
    
enable-yasm --disable-doc --disable-shared --enable-static --pkg-
    
config=/home/sb/Source-Code/ffmpeg-android/ffmpeg-pkg-config --
    
prefix=/home/sb/Source-Code/ffmpeg-android/build/armeabi-v7a-neon --extra-
    
cflags='-I/home/sb/Source-Code/ffmpeg-android/toolchain-android/include -
    
U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-
    
all -mfpu=neon' --extra-ldflags='-L/home/sb/Source-Code/ffmpeg-
    
 android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-
    
 lpng -lexpat -lm' --extra-cxxflags=
    
  libavutil      54.  7.100 / 54.  7.100
    
  libavcodec     56.  1.100 / 56.  1.100
    
  libavformat    56.  4.101 / 56.  4.101
    
  libavdevice    56.  0.100 / 56.  0.100
    
  libavfilter     5.  1.100 /  5.  1.100
    
  libswscale      3.  0.100 /  3.  0.100
    
  libswresample   1.  1.100 /  1.  1.100
    
  libpostproc    53.  0.100 / 53.  0.100
    
  /storage/emulated/0/Pictures/Instagram/Fast: No such file or directory

  • QT ffmpeg Setting

    20 juillet 2016, par user775668

    I can’t use the ffmpeg in QT.

    My Steps :

    -1. compile the ffmpeg as normal

    -2. add lib/include path in QT .pro

    LIBS += -L/home/kim/ffmpeg/lib -lavcodec -lavformat
    
INCLUDEPATH += /home/kim/ffmpeg/include

    -3. in code

    extern "C" { 
    
#include <libavcodec></libavcodec>avcodec.h>
    
#include <libavformat></libavformat>avformat.h>
    
}

    and just call a function named av_register_all() ;

    then I got the following bulid issues< many functions undefined reference >

    in function `rl2_read_packet`: undefined reference to `av_free_packet`
    
in function `av_register_all`: ....

    I search a solution of the problem but not work for me.

    Any other solution ? Thanks.

  • Android JNI x264 as a library give relocation R_ARM_MOVW_ABS_NC ; recompile with -fPIC

    25 juin 2014, par MoAdiB

    I’m trying to build x264 library to use it in a shared library that I load using jni on android. I’m able to build everything as an executable without any error but when I build as a shared library I get errors with dynamic relocation of R_ARM_MOVW_ABS_NC :

    [armeabi-v7a] SharedLibrary  : libx264.so
    
/home/martin/bin/android-ndk/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.8/../../../../arm-linux-androideabi/bin/ld: error: /home/martin/Documents/Sources/ScreenSharingServer/app/src/main/obj/local/armeabi-v7a/objs/x264/common/arm/pixel-a.o: requires unsupported dynamic reloc R_ARM_MOVW_ABS_NC; recompile with -fPIC
    
/home/martin/bin/android-ndk/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.8/../../../../arm-linux-androideabi/bin/ld: error: /home/martin/Documents/Sources/ScreenSharingServer/app/src/main/obj/local/armeabi-v7a/objs/x264/common/arm/mc-a.o: requires unsupported dynamic reloc R_ARM_MOVW_ABS_NC; recompile with -fPIC
    
/home/martin/bin/android-ndk/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.8/../../../../arm-linux-androideabi/bin/ld: error: /home/martin/Documents/Sources/ScreenSharingServer/app/src/main/obj/local/armeabi-v7a/objs/x264/common/arm/dct-a.o: requires unsupported dynamic reloc R_ARM_MOVW_ABS_NC; recompile with -fPIC
    
/home/martin/bin/android-ndk/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.8/../../../../arm-linux-androideabi/bin/ld: error: /home/martin/Documents/Sources/ScreenSharingServer/app/src/main/obj/local/armeabi-v7a/objs/x264/common/arm/quant-a.o: requires unsupported dynamic reloc R_ARM_MOVW_ABS_NC; recompile with -fPIC
    
/home/martin/bin/android-ndk/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.8/../../../../arm-linux-androideabi/bin/ld: error: /home/martin/Documents/Sources/ScreenSharingServer/app/src/main/obj/local/armeabi-v7a/objs/x264/common/arm/predict-a.o: requires unsupported dynamic reloc R_ARM_MOVW_ABS_NC; recompile with -fPIC
    
collect2: error: ld returned 1 exit status
    
make: *** [/home/martin/Documents/Sources/ScreenSharingServer/app/src/main/obj/local/armeabi-v7a/libx264.so] Error 1

    Here is my android.mk :

    LOCAL_PATH := $(my-dir)
    

    
include $(CLEAR_VARS)
    

    
APP_ABI := armeabi armeabi-v7a
    
TARGET_ARCH_ABI := armeabi-v7a
    
LOCAL_ARM_NEON := true
    
ARCH_ARM_HAVE_NEON := true
    

    
AM_CFLAGS := -march=armv7-a -mfpu=neon
    
AM_CCASFLAGS := -march=armv7-a -mfpu=neon
    

    
LOCAL_SRC_FILES:= common/mc.c common/predict.c common/pixel.c common/macroblock.c \
    
       common/frame.c common/dct.c common/cpu.c common/cabac.c \
    
       common/common.c common/osdep.c common/rectangle.c \
    
       common/set.c common/quant.c common/deblock.c common/vlc.c \
    
       common/mvpred.c common/bitstream.c \
    
       encoder/analyse.c encoder/me.c encoder/ratecontrol.c \
    
       encoder/set.c encoder/macroblock.c encoder/cabac.c \
    
       encoder/cavlc.c encoder/encoder.c encoder/lookahead.c \
    
       common/threadpool.c \
    
       common/arm/mc-c.c common/arm/predict-c.c \
    
       x264.c \
    
       common/arm/cpu-a.S common/arm/pixel-a.S common/arm/mc-a.S \
    
       common/arm/dct-a.S common/arm/quant-a.S common/arm/deblock-a.S \
    
       common/arm/predict-a.S
    

    
LOCAL_SHARED_LIBRARIES := libcutils
    
LOCAL_STATIC_LIBRARIES := swscale
    

    
LOCAL_C_INCLUDES := $(LOCAL_PATH) $(LOCAL_PATH)/..
    
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH) $(LOCAL_PATH)/..
    

    
LOCAL_CFLAGS := -fPIC -O3 -ffast-math -fstrict-aliasing -DANDROID -std=c99
    
LOCAL_CPPFLAGS := -fPIC
    
LOCAL_LDFLAGS := -lm
    
LOCAL_MODULE := x264
    

    
include $(BUILD_SHARED_LIBRARY)

    When I build with V=1 I see -fPIC option in every compilation line...

    I wonder if anybody can help me understand what I do wrong.

    Thanks for your time !

    Martin

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