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  • Compile error for a simple library in Android using latest FFmpeg library with NDK

    21 mars 2017, par satyres

    I’m trying to get FFmpeg working in Android , and after successfuly compiled it on Ubuntu 64bit , and created the Android.mk under source/ffmpeg-3.4.2/android/arm folder and also the Android.mk in my own Android project
     ! i’m unable to compile a simple program and create the .so file !
    By the way i’ve searched over the net and in Stackoverflow for 2 days now without luck !
    here is the code Android.mk

    LOCAL_PATH:= $(call my-dir)
    
include $(CLEAR_VARS)
    
LOCAL_MODULE    := MyLibrary
    
LOCAL_SRC_FILES := MyNativeFunctions.c
    
LOCAL_LDLIBS := -lz -llog
    
LOCAL_STATIC_LIBRARIES := libavformat_static libavcodec_static libavutil_static
    
include $(BUILD_SHARED_LIBRARY)
    

    
$(call import-module,ffmpeg-3.2.4/android/arm)

    The native functions

        #include <libavformat></libavformat>avformat.h>
    
    #include <libavcodec></libavcodec>avcodec.h>
    
    #include <libavutil></libavutil>avutil.h>
    

    
    #include <android></android>log.h>
    
    #define LOG_TAG "mylib"
    
    #define LOGI(...)  __android_log_print(ANDROID_LOG_INFO, LOG_TAG, __VA_ARGS__)
    
    #define LOGE(...)  __android_log_print(ANDROID_LOG_ERROR, LOG_TAG, __VA_ARGS__)
    
    jint Java_com_example_home_hellondk_MyNativeFunctions_TestNdk(JNIEnv * env, jobject this, jstring filename)
    
    {
    
         av_register_all();
    

    
return 0;
    
}

    when i use NDK-BUILD here is the error i got :

    /home/home/Android/Sdk/ndk-bundle/sources/ffmpeg-3.2.4/android/arm/lib/libavformat.a: error adding symbols: File in wrong format
    
clang++: error: linker command failed with exit code 1 (use -v to see invocation)
    
make: *** [obj/local/arm64-v8a/libMyLibrary.so] Error 1

    [EDIT]
    Build_android.sh

    #!/bin/bash
    
NDK=/home/home/Android/Sdk/ndk-bundle
    
SYSROOT=$NDK/platforms/android-24/arch-arm/
    
TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64
    
 function build_one
    
{
    
./configure \
    
--prefix=$PREFIX \
    
--disable-shared \
    
--enable-static \
    
--disable-doc \
    
--disable-ffmpeg \
    
--disable-ffplay \
    
--disable-ffprobe \
    
--disable-ffserver \
    
--disable-avdevice \
    
--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

    [EDIT]
    The problem has been solved by adding the missing library in
    LOCAL_STATIC_LIBRARIES := libavformat_static libavcodec_static libswscale_static libavutil_static libswresample_static
    and for all users of Android Studio do not forget to add this line to your gradle otherwise it won’t work.

    sourceSets.main {
    
        jni.srcDirs = []
    
        jniLibs.srcDir 'src/main/libs'
    
    }

    Best regards

  • pip install av produces a LINK 1181 error

    6 février 2020, par user8606643

    initially, pip install av asked me to download visual C++ 14 build tools which I did
    but it is still showing me LINK 1181 errors

    I need this pyAV pakcage which is obtained by pip install av for a project, but it always shows some kind of error linked with C++ and i also have ffmpeg installed.

    C:\Users\manop>pip install av
    
Collecting av
    
  Using cached av-7.0.0.tar.gz (2.3 MB)
    
Building wheels for collected packages: av
    
  Building wheel for av (setup.py) ... error
    
  ERROR: Command errored out with exit status 1:
    
   command: 'c:\users\manop\appdata\local\programs\python\python37\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\manop\\AppData\\Local\\Temp\\pip-install-rydo0uqj\\av\\setup.py'"'"'; __file__='"'"'C:\\Users\\manop\\AppData\\Local\\Temp\\pip-install-rydo0uqj\\av\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d 'C:\Users\manop\AppData\Local\Temp\pip-wheel-oti9y28m'
    
       cwd: C:\Users\manop\AppData\Local\Temp\pip-install-rydo0uqj\av\
    
  Complete output (38 lines):
    
  running bdist_wheel
    
  running build
    
  running build_py
    
  creating build
    
  creating build\lib.win-amd64-3.7
    
  creating build\lib.win-amd64-3.7\av
    
  copying av\datasets.py -> build\lib.win-amd64-3.7\av
    
  copying av\deprecation.py -> build\lib.win-amd64-3.7\av
    
  copying av\__init__.py -> build\lib.win-amd64-3.7\av
    
  copying av\__main__.py -> build\lib.win-amd64-3.7\av
    
  creating build\lib.win-amd64-3.7\av\audio
    
  copying av\audio\__init__.py -> build\lib.win-amd64-3.7\av\audio
    
  creating build\lib.win-amd64-3.7\av\codec
    
  copying av\codec\__init__.py -> build\lib.win-amd64-3.7\av\codec
    
  creating build\lib.win-amd64-3.7\av\container
    
  copying av\container\__init__.py -> build\lib.win-amd64-3.7\av\container
    
  creating build\lib.win-amd64-3.7\av\data
    
  copying av\data\__init__.py -> build\lib.win-amd64-3.7\av\data
    
  creating build\lib.win-amd64-3.7\av\filter
    
  copying av\filter\__init__.py -> build\lib.win-amd64-3.7\av\filter
    
  creating build\lib.win-amd64-3.7\av\sidedata
    
  copying av\sidedata\__init__.py -> build\lib.win-amd64-3.7\av\sidedata
    
  creating build\lib.win-amd64-3.7\av\subtitles
    
  copying av\subtitles\__init__.py -> build\lib.win-amd64-3.7\av\subtitles
    
  creating build\lib.win-amd64-3.7\av\video
    
  copying av\video\__init__.py -> build\lib.win-amd64-3.7\av\video
    
  running build_ext
    
  running config
    
  writing build\temp.win-amd64-3.7\Release\include\pyav\config.h
    
  running cythonize
    
  building 'av.buffer' extension
    
  creating build\temp.win-amd64-3.7\Release\src
    
  creating build\temp.win-amd64-3.7\Release\src\av
    
  C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.16.27023\bin\HostX64\x64\cl.exe /c /nologo /Ox /W3 /GL /DNDEBUG /MD -Ic:\users\manop\appdata\local\programs\python\python37\include -Ibuild\temp.win-amd64-3.7\Release\include -Iinclude -Ic:\users\manop\appdata\local\programs\python\python37\include -Ic:\users\manop\appdata\local\programs\python\python37\include -Ibuild\temp.win-amd64-3.7\Release\include "-IC:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.16.27023\Include" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\shared" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\winrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\ucrt" /Tcsrc\av\buffer.c /Fobuild\temp.win-amd64-3.7\Release\src\av\buffer.obj
    
  buffer.c
    
  C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.16.27023\bin\HostX64\x64\link.exe /nologo /INCREMENTAL:NO /LTCG /DLL /MANIFEST:EMBED,ID=2 /MANIFESTUAC:NO /LIBPATH:c:\users\manop\appdata\local\programs\python\python37\PCbuild\amd64 /LIBPATH:c:\users\manop\appdata\local\programs\python\python37\libs /LIBPATH:c:\users\manop\appdata\local\programs\python\python37\libs /LIBPATH:c:\users\manop\appdata\local\programs\python\python37\PCbuild\amd64 "/LIBPATH:C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.16.27023\Lib\x64" "/LIBPATH:C:\Program Files (x86)\Windows Kits\10\lib\10.0.18362.0\um\x64" /LIBPATH:C:\WINDOWS\Microsoft.NET\Framework64\v4.0.30319 "/LIBPATH:C:\Program Files (x86)\Windows Kits\10\lib\10.0.18362.0\ucrt\x64" swresample.lib swscale.lib avdevice.lib avutil.lib avcodec.lib avformat.lib avfilter.lib /EXPORT:PyInit_buffer build\temp.win-amd64-3.7\Release\src\av\buffer.obj /OUT:build\lib.win-amd64-3.7\av\buffer.cp37-win_amd64.pyd /IMPLIB:build\temp.win-amd64-3.7\Release\src\av\buffer.cp37-win_amd64.lib /OPT:NOREF
    
  LINK : fatal error LNK1181: cannot open input file 'swresample.lib'
    
  error: command 'C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Community\\VC\\Tools\\MSVC\\14.16.27023\\bin\\HostX64\\x64\\link.exe' failed with exit status 1181
    
  ----------------------------------------
    
  ERROR: Failed building wheel for av
    
  Running setup.py clean for av
    
Failed to build av
    
Installing collected packages: av
    
    Running setup.py install for av ... error
    
    ERROR: Command errored out with exit status 1:
    
     command: 'c:\users\manop\appdata\local\programs\python\python37\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\manop\\AppData\\Local\\Temp\\pip-install-rydo0uqj\\av\\setup.py'"'"'; __file__='"'"'C:\\Users\\manop\\AppData\\Local\\Temp\\pip-install-rydo0uqj\\av\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\manop\AppData\Local\Temp\pip-record-xac0xiy4\install-record.txt' --single-version-externally-managed --compile --install-headers 'c:\users\manop\appdata\local\programs\python\python37\Include\av'
    
         cwd: C:\Users\manop\AppData\Local\Temp\pip-install-rydo0uqj\av\
    
    Complete output (38 lines):
    
    running install
    
    running build
    
    running build_py
    
    creating build
    
    creating build\lib.win-amd64-3.7
    
    creating build\lib.win-amd64-3.7\av
    
    copying av\datasets.py -> build\lib.win-amd64-3.7\av
    
    copying av\deprecation.py -> build\lib.win-amd64-3.7\av
    
    copying av\__init__.py -> build\lib.win-amd64-3.7\av
    
    copying av\__main__.py -> build\lib.win-amd64-3.7\av
    
    creating build\lib.win-amd64-3.7\av\audio
    
    copying av\audio\__init__.py -> build\lib.win-amd64-3.7\av\audio
    
    creating build\lib.win-amd64-3.7\av\codec
    
    copying av\codec\__init__.py -> build\lib.win-amd64-3.7\av\codec
    
    creating build\lib.win-amd64-3.7\av\container
    
    copying av\container\__init__.py -> build\lib.win-amd64-3.7\av\container
    
    creating build\lib.win-amd64-3.7\av\data
    
    copying av\data\__init__.py -> build\lib.win-amd64-3.7\av\data
    
    creating build\lib.win-amd64-3.7\av\filter
    
    copying av\filter\__init__.py -> build\lib.win-amd64-3.7\av\filter
    
    creating build\lib.win-amd64-3.7\av\sidedata
    
    copying av\sidedata\__init__.py -> build\lib.win-amd64-3.7\av\sidedata
    
    creating build\lib.win-amd64-3.7\av\subtitles
    
    copying av\subtitles\__init__.py -> build\lib.win-amd64-3.7\av\subtitles
    
    creating build\lib.win-amd64-3.7\av\video
    
    copying av\video\__init__.py -> build\lib.win-amd64-3.7\av\video
    
    running build_ext
    
    running config
    
    writing build\temp.win-amd64-3.7\Release\include\pyav\config.h
    
    running cythonize
    
    building 'av.buffer' extension
    
    creating build\temp.win-amd64-3.7\Release\src
    
    creating build\temp.win-amd64-3.7\Release\src\av
    
    C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.16.27023\bin\HostX64\x64\cl.exe /c /nologo /Ox /W3 /GL /DNDEBUG /MD -Ibuild\temp.win-amd64-3.7\Release\include -Iinclude -Ic:\users\manop\appdata\local\programs\python\python37\include -Ic:\users\manop\appdata\local\programs\python\python37\include -Ic:\users\manop\appdata\local\programs\python\python37\include -Ibuild\temp.win-amd64-3.7\Release\include "-IC:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.16.27023\Include" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\shared" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\winrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\ucrt" /Tcsrc\av\buffer.c /Fobuild\temp.win-amd64-3.7\Release\src\av\buffer.obj
    
    buffer.c
    
    C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.16.27023\bin\HostX64\x64\link.exe /nologo /INCREMENTAL:NO /LTCG /DLL /MANIFEST:EMBED,ID=2 /MANIFESTUAC:NO /LIBPATH:c:\users\manop\appdata\local\programs\python\python37\PCbuild\amd64 /LIBPATH:c:\users\manop\appdata\local\programs\python\python37\libs /LIBPATH:c:\users\manop\appdata\local\programs\python\python37\libs /LIBPATH:c:\users\manop\appdata\local\programs\python\python37\PCbuild\amd64 "/LIBPATH:C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.16.27023\Lib\x64" "/LIBPATH:C:\Program Files (x86)\Windows Kits\10\lib\10.0.18362.0\um\x64" /LIBPATH:C:\WINDOWS\Microsoft.NET\Framework64\v4.0.30319 "/LIBPATH:C:\Program Files (x86)\Windows Kits\10\lib\10.0.18362.0\ucrt\x64" avutil.lib avfilter.lib swresample.lib swscale.lib avformat.lib avcodec.lib avdevice.lib /EXPORT:PyInit_buffer build\temp.win-amd64-3.7\Release\src\av\buffer.obj /OUT:build\lib.win-amd64-3.7\av\buffer.cp37-win_amd64.pyd /IMPLIB:build\temp.win-amd64-3.7\Release\src\av\buffer.cp37-win_amd64.lib /OPT:NOREF
    
    LINK : fatal error LNK1181: cannot open input file 'avutil.lib'
    
    error: command 'C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Community\\VC\\Tools\\MSVC\\14.16.27023\\bin\\HostX64\\x64\\link.exe' failed with exit status 1181
    
    ----------------------------------------
    
ERROR: Command errored out with exit status 1: 'c:\users\manop\appdata\local\programs\python\python37\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\manop\\AppData\\Local\\Temp\\pip-install-rydo0uqj\\av\\setup.py'"'"'; __file__='"'"'C:\\Users\\manop\\AppData\\Local\\Temp\\pip-install-rydo0uqj\\av\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\manop\AppData\Local\Temp\pip-record-xac0xiy4\install-record.txt' --single-version-externally-managed --compile --install-headers 'c:\users\manop\appdata\local\programs\python\python37\Include\av' Check the logs for full command output.

    These are my visual C++ selections :
    my visual studio installer individual components selection

  • ffmpeg python subprocess error only on ubuntu

    19 avril 2017, par Wonger

    Im working on an application that is splitting videos from youtube into images. I work on a macbook pro for development, but our app servers run on an ubuntu 12.04 server. The current code on our servers running right now is the following

    ffmpeg -i {video_file} -vf fps={fps}

    which we run via a subprocess Popen function call in python. This has very slow performance because it is essentially playing back the whole video file to get the frames. I found another SO post that said you could use -accurate_seek -ss to grab single frames at a specific time, but I am facing some issues with that. When i run the command via command line when SSH into our dev server, it works fine, but when i run it via a subprocess Popen call in python, i get the following error :

    (standard_in) 1: syntax error
    
ffmpeg version 3.2.4-static http://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2017 the FFmpeg developers
    
  built with gcc 5.4.1 (Debian 5.4.1-5) 20170205
    
  configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc-5 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gray --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libzimg
    
  libavutil      55. 34.101 / 55. 34.101
    
  libavcodec     57. 64.101 / 57. 64.101
    
  libavformat    57. 56.101 / 57. 56.101
    
  libavdevice    57.  1.100 / 57.  1.100
    
  libavfilter     6. 65.100 /  6. 65.100
    
  libswscale      4.  2.100 /  4.  2.100
    
  libswresample   2.  3.100 /  2.  3.100
    
  libpostproc    54.  1.100 / 54.  1.100
    
Option accurate_seek (enable/disable accurate seeking with -ss) cannot be applied to output url test.mkv -- you are trying to apply an input option to an output file or vice versa. Move this option before the file it belongs to.
    
Error parsing options for output file test.mkv.
    
Error opening output files: Invalid argument

    python code :

    import subprocess
    
command = "for i in {0..3} ; do ffmpeg -accurate_seek -ss `echo $i*60.0 | bc` -i test.mkv -frames:v 1 images/test_img_$i.jpg ; done"
    
process = subprocess.Popen(command, stdout=subprocess.PIPE, stderr = subprocess.STDOUT, shell=True)
    
output = process.communicate()
    
print output[0].replace('\\n' , '\n')

    The thing is, when i run this on my OSX terminal, it works fine, but there is some issue with doing it in ubuntu. Does anyone have experience with this issue ?

    Output when i run the same exact code in osx :

    ffmpeg version 3.0.2 Copyright (c) 2000-2016 the FFmpeg developers
    
  built with Apple LLVM version 7.3.0 (clang-703.0.31)
    
  configuration: --prefix=/usr/local/Cellar/ffmpeg/3.0.2 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-opencl --enable-libx264 --enable-libmp3lame --enable-libxvid --enable-libvpx --enable-vda
    
  libavutil      55. 17.103 / 55. 17.103
    
  libavcodec     57. 24.102 / 57. 24.102
    
  libavformat    57. 25.100 / 57. 25.100
    
  libavdevice    57.  0.101 / 57.  0.101
    
  libavfilter     6. 31.100 /  6. 31.100
    
  libavresample   3.  0.  0 /  3.  0.  0
    
  libswscale      4.  0.100 /  4.  0.100
    
  libswresample   2.  0.101 /  2.  0.101
    
  libpostproc    54.  0.100 / 54.  0.100
    
  Input #0, matroska,webm, from 'test.mkv':
    
  Metadata:
    
    COMPATIBLE_BRANDS: iso6avc1mp41
    
    MAJOR_BRAND     : dash
    
    MINOR_VERSION   : 0
    
    ENCODER         : Lavf57.25.100
    
  Duration: 00:02:10.20, start: 0.007000, bitrate: 2729 kb/s
    
    Stream #0:0: Video: h264 (High), yuv420p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc (default)
    
    Metadata:
    
      HANDLER_NAME    : VideoHandler
    
      DURATION        : 00:02:10.172000000
    
    Stream #0:1(eng): Audio: opus, 48000 Hz, stereo, fltp (default)
    
    Metadata:
    
      DURATION        : 00:02:10.201000000
    
      [swscaler @ 0x7f9b4b008000] deprecated pixel format used, make sure you did set range correctly
    
Output #0, image2, to 'images/test_img_0.jpg':
    
  Metadata:
    
    COMPATIBLE_BRANDS: iso6avc1mp41
    
    MAJOR_BRAND     : dash
    
    MINOR_VERSION   : 0
    
    encoder         : Lavf57.25.100
    
    Stream #0:0: Video: mjpeg, yuvj420p(pc), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 23.98 fps, 23.98 tbn, 23.98 tbc (default)
    
    Metadata:
    
      HANDLER_NAME    : VideoHandler
    
      DURATION        : 00:02:10.172000000
    
      encoder         : Lavc57.24.102 mjpeg
    
    Side data:
    
      unknown side data type 10 (24 bytes)
    
      Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> mjpeg (native))
    
  Press [q] to stop, [?] for help
    
frame=    1 fps=0.0 q=7.2 Lsize=N/A time=00:00:00.04 bitrate=N/A speed=   1x    
    
video:73kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
    
....

    One thing i forgot to mention is that on my mac i used homebrew to install ffmpeg, where as on Ubuntu i used a static build

    other stack overflow reference : Fastest way to extract frames using ffmpeg ?

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