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  • Les formats acceptés

    28 janvier 2010, par

    Les commandes suivantes permettent d’avoir des informations sur les formats et codecs gérés par l’installation local de ffmpeg :
    ffmpeg -codecs ffmpeg -formats
    Les format videos acceptés en entrée
    Cette liste est non exhaustive, elle met en exergue les principaux formats utilisés : h264 : H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 m4v : raw MPEG-4 video format flv : Flash Video (FLV) / Sorenson Spark / Sorenson H.263 Theora wmv :
    Les formats vidéos de sortie possibles
    Dans un premier temps on (...)

  • Ajouter notes et légendes aux images

    7 février 2011, par

    Pour pouvoir ajouter notes et légendes aux images, la première étape est d’installer le plugin "Légendes".
    Une fois le plugin activé, vous pouvez le configurer dans l’espace de configuration afin de modifier les droits de création / modification et de suppression des notes. Par défaut seuls les administrateurs du site peuvent ajouter des notes aux images.
    Modification lors de l’ajout d’un média
    Lors de l’ajout d’un média de type "image" un nouveau bouton apparait au dessus de la prévisualisation (...)

  • Le profil des utilisateurs

    12 avril 2011, par

    Chaque utilisateur dispose d’une page de profil lui permettant de modifier ses informations personnelle. Dans le menu de haut de page par défaut, un élément de menu est automatiquement créé à l’initialisation de MediaSPIP, visible uniquement si le visiteur est identifié sur le site.
    L’utilisateur a accès à la modification de profil depuis sa page auteur, un lien dans la navigation "Modifier votre profil" est (...)

Sur d’autres sites (7102)

  • 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

  • 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 :)

  • 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

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