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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

• imageresizing.net : remote, extensionless files

  21 janvier 2015, par cwnchckn

  I am trying to set up a thumbnailing service supporting the most common image formats as well as PDF and some video formats. The storage backend is a simple HTTP server. The files, however, are stored using synthetic names equal to their crytographic hash and do not have extensions.

  I have a working system running ImageResizer as a HttpModule, loading the files using RemoteReader. It is set up to skip file type checks. However, I need to find a way to specify the exact decoder to use (such as with WIC, that supports &decode=wic in the request arguments), for instance &decoder=pdf or &decoder=ffmpeg. I suppose parsing the request arguments in PostAuthorizeRequestStart and extracting the decoder parameter value would be a good place to start, but I have no idea what to do next, as this is my first time ever touching Microsoft tech and the ASP.NET app anatomy is not immediately obvious.

  I would appreciate any hints, thanks

• Converting large number of MP3 files to videos for YouTube, each using same JPG

  2 juin 2020, par David

  Looking for a way to convert large number of mp3 files to videos each using the same image. Efficient processing time is important.

  



  Tried following :

  



  ffmpeg -i image.jpg -i audio.mp3 -vcodec libx264 video.mp4


  



  VLC played the resulting video file with the correct sound, but blank screen.
Microsoft Media Player played the sound and showed the intended image.
Uploaded the video to YouTube and received mesage "The video has failed to process. Please make sure you are uploading a supported file type."

  



  Would appreciate advice on how to make this work.