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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

How to link the ffmpeg transcoding process information into a vb6 GUI app ?

19 décembre 2019, par melaos

i’m playing with a vb6 gui frontend for ffmpeg and as of now all i can do is to call the ffmpeg via cmd.exe which will shows the command prompt while the whole process is still running. And i thought this was the norm seeing how WinFF, another pascal based frontend gui for ffmpeg works.

But i was blown away when i saw this other GVC gui which has a progress bar and everything.

So basically, i’m looking into a way how i could cleanly hide the whole command prompt and link the transcoding progress to a progress bar into my gui.

So here’s my plan, I’m thinking of finding a win32 api function which i can call the cmd line and yet hide it, and from another discussion here, i think i would have to read the log file to get the ffmpeg progress information.

So which function should i call for the win32 api ?
And does anyone knows of a better/easier way to get this done ?
thanks

Updates :

In case anybody is interested, i find a nice class module on how to grab the cmd output into my vb6 app, and it’s by none other than the great joacim :)

How to link libavformat in Cmake on mac ?

29 novembre 2019, par Alexandru Cancescu

I am trying to use the libavformat from ffmpeg in a C++ project. I have ffmpeg installed using homebrew.

My CMakeLists.txt :

cmake_minimum_required(VERSION 3.14)

project(av_test)



set(CMAKE_CXX_STANDARD 11)



INCLUDE_DIRECTORIES(/usr/local/Cellar/ffmpeg/4.2.1_2/include)

LINK_DIRECTORIES(/usr/local/Cellar/ffmpeg/4.2.1_2/lib)



add_executable(av_test main.cpp)



TARGET_LINK_LIBRARIES(av_test libavformat)

When running cmake I get this error :

ld: library not found for -llibavformat

clang: error: linker command failed with exit code 1 (use -v to see invocation)

make[3]: *** [av_test] Error 1

make[2]: *** [CMakeFiles/av_test.dir/all] Error 2

make[1]: *** [CMakeFiles/av_test.dir/rule] Error 2

make: *** [av_test] Error 2

A quick find libavformat* into /usr/local/Cellar/ffmpeg/4.2.1_2/lib returns :

libavformat.58.29.100.dylib

libavformat.58.dylib

libavformat.a

libavformat.dylib

Also in /usr/local/Cellar/ffmpeg/4.2.1_2/include/libavformat there is avformat.h

My main.cpp :

#include <libavformat></libavformat>avformat.h>



int main() {



    AVFormatContext *pFormatContext;



    return 0;

}

I am running on mac os 10.14 with cmake version 3.15.5 , ffmpeg version 4.2.1

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Recherche avancée

Médias (0)

Autres articles (56)

Les autorisations surchargées par les plugins

HTML5 audio and video support

Support audio et vidéo HTML5

Sur d’autres sites (10040)

pip install av produces a LINK 1181 error

How to link the ffmpeg transcoding process information into a vb6 GUI app ?

Updates :

How to link libavformat in Cmake on mac ?

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