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  • Configurer la prise en compte des langues

    15 novembre 2010, par

    Accéder à la configuration et ajouter des langues prises en compte
    Afin de configurer la prise en compte de nouvelles langues, il est nécessaire de se rendre dans la partie "Administrer" du site.
    De là, dans le menu de navigation, vous pouvez accéder à une partie "Gestion des langues" permettant d’activer la prise en compte de nouvelles langues.
    Chaque nouvelle langue ajoutée reste désactivable tant qu’aucun objet n’est créé dans cette langue. Dans ce cas, elle devient grisée dans la configuration et (...)

  • Taille des images et des logos définissables

    9 février 2011, par

    Dans beaucoup d’endroits du site, logos et images sont redimensionnées pour correspondre aux emplacements définis par les thèmes. L’ensemble des ces tailles pouvant changer d’un thème à un autre peuvent être définies directement dans le thème et éviter ainsi à l’utilisateur de devoir les configurer manuellement après avoir changé l’apparence de son site.
    Ces tailles d’images sont également disponibles dans la configuration spécifique de MediaSPIP Core. La taille maximale du logo du site en pixels, on permet (...)

  • Emballe médias : à quoi cela sert ?

    4 février 2011, par

    Ce plugin vise à gérer des sites de mise en ligne de documents de tous types.
    Il crée des "médias", à savoir : un "média" est un article au sens SPIP créé automatiquement lors du téléversement d’un document qu’il soit audio, vidéo, image ou textuel ; un seul document ne peut être lié à un article dit "média" ;

Sur d’autres sites (5152)

  • Mingw-w64 - printf does not work

    27 décembre 2013, par Gosha U.

    First I wanted to modificate ffplay according to my requirments. Then I noticed that original ffplay from my build can't play some video files, but it didn't write any message to console. Then I noticed that ffmpeg also don't write any usage message when I run it without params. But it works. If I run it from terminal it's like running asynchronously ! The terminal just shows next row. I mean it asks for a next command. But the ffmpeg process is visible in task manager and it writes the output video file what I had requested !

    I created following souce file. I have modified the Makefile. So it have built the exe-file works just the same way. I have no idea how it can be.

    #include 
    
#include "cmdutils.h"
    

    
const char program_name[] = "hello";
    
const int program_birth_year = 2013;
    

    
void show_help_default(const char *opt, const char *arg)
    
{
    
    printf("zxcvbnm\n");
    
}
    

    
int main(int argc, char **argv)
    
{
    
    printf("1234567890\n");
    
    return 0;
    
}

    And after that I created real hello world app with MinGW-w64 and qmake without eny extra libs. And its printf does not work.

    I want to prevent this behavior.

    I want to make printf working in traditional manner.

    How I build FFmpeg :

    PKG_CONFIG_PATH=/home/developer/workspace/MinGW32fs/lib/pkgconfig/ \
    
SDL_CONFIG=/home/developer/workspace/MinGW32fs/bin/sdl-config \
    
./configure \
    
  --prefix=/home/developer/workspace/MinGW32fs \
    
  --extra-ldflags="-L/home/developer/workspace/MinGW32fs/lib" \
    
  --extra-cflags="-I/home/developer/workspace/MinGW32fs/include" \
    
  --arch=x86 --target-os=mingw32 --cross-prefix=i686-w64-mingw32-  \
    
  --pkg-config=pkg-config   --enable-libtheora --enable-libvorbis --enable-libvpx \
    
  --enable-outdev=sdl --enable-shared --disable-static \
    
  --disable-doc --disable-manpages --disable-podpages
    

    
make

  • How do I properly link ffmpeg using CMake in my Flutter plugin on Linux ?

    7 avril 2022, par GroovinChip

    I've written a Flutter plugin for Linux that uses ffmpeg and I'm having trouble building my example app that uses the plugin. I keep getting errors that there are no matching calls to several ffmpeg functions, which I can actually click into and see. Why is this happening and what can I do to fix it ?

    


    Here is my plugin's CMakeLists.txt :

    


    cmake_minimum_required(VERSION 3.10)
set(PROJECT_NAME "thumblr_linux")
project(${PROJECT_NAME} LANGUAGES CXX)

# This value is used when generating builds using this plugin, so it must
# not be changed
set(PLUGIN_NAME "thumblr_linux_plugin")

add_subdirectory(FFmpeg)

add_library(${PLUGIN_NAME} SHARED
  "thumblr_linux_plugin.cc"
)
apply_standard_settings(${PLUGIN_NAME})
set_target_properties(${PLUGIN_NAME} PROPERTIES
  CXX_VISIBILITY_PRESET hidden)
target_compile_definitions(${PLUGIN_NAME} PRIVATE FLUTTER_PLUGIN_IMPL)
target_include_directories(${PLUGIN_NAME} INTERFACE
  "${CMAKE_CURRENT_SOURCE_DIR}/include")
target_link_libraries(${PLUGIN_NAME} PRIVATE flutter)
target_link_libraries(${PLUGIN_NAME} PRIVATE PkgConfig::GTK FFmpgeg)

# List of absolute paths to libraries that should be bundled with the plugin
set(thumblr_linux_bundled_libraries
  ""
  PARENT_SCOPE
)


    


    and here is my FFmpeg/CMakeLists.txt :

    


    cmake_minimum_required(VERSION 3.14)
project(FFmpeg)

find_package(PkgConfig REQUIRED)
pkg_check_modules(AVCODEC     REQUIRED IMPORTED_TARGET libavcodec)
pkg_check_modules(AVFORMAT    REQUIRED IMPORTED_TARGET libavformat)
pkg_check_modules(AVFILTER    REQUIRED IMPORTED_TARGET libavfilter)
pkg_check_modules(AVDEVICE    REQUIRED IMPORTED_TARGET libavdevice)
pkg_check_modules(AVUTIL      REQUIRED IMPORTED_TARGET libavutil)
pkg_check_modules(SWRESAMPLE  REQUIRED IMPORTED_TARGET libswresample)
pkg_check_modules(SWSCALE     REQUIRED IMPORTED_TARGET libswscale)

add_library(FFmpeg INTERFACE IMPORTED GLOBAL)

target_link_libraries(FFmpeg INTERFACE
    PkgConfig::AVCODEC
    PkgConfig::AVFORMAT
    PkgConfig::AVFILTER
    PkgConfig::AVDEVICE
    PkgConfig::AVUTIL
    PkgConfig::SWRESAMPLE
    PkgConfig::SWSCALE
)


    


    and here are the error messages I get when building :

    


    /home/parallels/flutter_projects/thumblr/thumblr_linux/example/linux/flutter/ephemeral/.plugin_symlinks/thumblr_linux/linux/thumblr_linux_plugin.cc:80:9: error: no matching function for call to 'avformat_open_input'
/home/parallels/flutter_projects/thumblr/thumblr_linux/example/linux/flutter/ephemeral/.plugin_symlinks/thumblr_linux/linux/thumblr_linux_plugin.cc:84:9: error: no matching function for call to 'avformat_find_stream_info'
/home/parallels/flutter_projects/thumblr/thumblr_linux/example/linux/flutter/ephemeral/.plugin_symlinks/thumblr_linux/linux/thumblr_linux_plugin.cc:88:5: error: no matching function for call to 'av_dump_format'
/home/parallels/flutter_projects/thumblr/thumblr_linux/example/linux/flutter/ephemeral/.plugin_symlinks/thumblr_linux/linux/thumblr_linux_plugin.cc:102:61: error: assigning to 'AVCodecContext *' from incompatible type 'AVCodecParameters *'
/home/parallels/flutter_projects/thumblr/thumblr_linux/example/linux/flutter/ephemeral/.plugin_symlinks/thumblr_linux/linux/thumblr_linux_plugin.cc:111:9: error: use of undeclared identifier 'avcodec_open'
/home/parallels/flutter_projects/thumblr/thumblr_linux/example/linux/flutter/ephemeral/.plugin_symlinks/thumblr_linux/linux/thumblr_linux_plugin.cc:119:14: error: use of undeclared identifier 'avcodec_alloc_frame'
/home/parallels/flutter_projects/thumblr/thumblr_linux/example/linux/flutter/ephemeral/.plugin_symlinks/thumblr_linux/linux/thumblr_linux_plugin.cc:122:17: error: use of undeclared identifier 'avcodec_alloc_frame'
/home/parallels/flutter_projects/thumblr/thumblr_linux/example/linux/flutter/ephemeral/.plugin_symlinks/thumblr_linux/linux/thumblr_linux_plugin.cc:127:16: error: no matching function for call to 'atk_image_get_image_size'
/home/parallels/flutter_projects/thumblr/thumblr_linux/example/linux/flutter/ephemeral/.plugin_symlinks/thumblr_linux/linux/thumblr_linux_plugin.cc:133:5: error: use of undeclared identifier 'av_image_fill_arrays'
/home/parallels/flutter_projects/thumblr/thumblr_linux/example/linux/flutter/ephemeral/.plugin_symlinks/thumblr_linux/linux/thumblr_linux_plugin.cc:144:9: error: use of undeclared identifier 'avcodec_decode_video'
/home/parallels/flutter_projects/thumblr/thumblr_linux/example/linux/flutter/ephemeral/.plugin_symlinks/thumblr_linux/linux/thumblr_linux_plugin.cc:179:15: error: unused variable 'ret' [-Werror,-Wunused-variable]
/home/parallels/flutter_projects/thumblr/thumblr_linux/example/linux/flutter/ephemeral/.plugin_symlinks/thumblr_linux/linux/thumblr_linux_plugin.cc:211:5: error: no matching function for call to 'avformat_close_input'


    


    the C++ code for the plugin itself can be found here : https://github.com/GroovinChip/thumblr/blob/main/thumblr_linux/linux/thumblr_linux_plugin.cc

    


  • ffmpeg No such filter : 'palettegen' in linux

    29 juillet 2016, par royise

    1.

    my system 
    
uname -a
    
Linux localhost.localdomain 2.6.32-220.el6.x86_64 #1 SMP Tue Dec 6 19:48:22 GMT 2011 x86_64 x86_64 x86_64 GNU/Linux

    2.ffmpeg is download from
    http://johnvansickle.com/ffmpeg/

    3.I had download the ffmpeg-release-64bit-static.tar.xz ,unpackage this file, and run : ./ffmpeg
    then ffmpeg has installed. I check it by using : ffmpeg -version
    no problems.

    I run those command in my system is no problem :

    cd /home/web/tomcat-6.0.29/zhouletest/ffmpeg-3.1.1-64bit-static 
    

    
./ffmpeg -y -ss 10 -t 3 -i /home/web/tomcat-6.0.29/zhouletest/videos/6.mp4 -vf fps=10,scale=177:-1:flags=lanczos,palettegen /home/web/tomcat-6.0.29/zhouletest/gif_images/palettegens/6.png 
    

    
./ffmpeg -y -ss 10 -t 3 -i /home/web/tomcat-6.0.29/zhouletest/videos/6.mp4 -i /home/web/tomcat-6.0.29/zhouletest/gif_images/palettegens/6.png -filter_complex "fps=10,scale=177:-1:flags=lanczos[x];[x][1:v]paletteuse" /home/web/tomcat-6.0.29/zhouletest/gif_images/6.gif

    but when I invoke this command in java, errors happend, why ? 

    String cmd1 = "/home/web/tomcat-6.0.29/zhouletest/ffmpeg -y -ss 10 -t 3 -i /home/web/tomcat-6.0.29/zhouletest/videos/6.mp4 -vf fps=10,scale=177:-1:flags=lanczos,palettegen /home/web/tomcat-6.0.29/zhouletest/gif_images/palettegens/6.png";
    
String cmd2 = "/home/web/tomcat-6.0.29/zhouletest/ffmpeg-3.1.1-64bit-static/ffmpeg -y -ss 10 -t 3 -i /home/web/tomcat-6.0.29/zhouletest/videos/6.mp4 -i /home/web/tomcat-6.0.29/zhouletest/gif_images/palettegens/6.png -filter_complex \"fps=10,scale=177:-1:flags=lanczos[x];[x][1:v]paletteuse\" /home/web/tomcat-6.0.29/zhouletest/gif_images/6.gif";
    

    
String result1 = executeCommand(cmd1);
    
String result2 = executeCommand(cmd2);
    

    
private static String executeCommand(String command) {
    
    StringBuffer output = new StringBuffer();
    
    Process p;
    
    try {
    
        p = Runtime.getRuntime().exec(command);
    
        p.waitFor();
    
        BufferedReader reader = new BufferedReader(new InputStreamReader(p.getErrorStream()));
    

    
        String line = "";
    
        while ((line = reader.readLine())!= null) {
    
            output.append(line + "\n");
    
        }
    

    
    } catch (Exception e) {
    
        e.printStackTrace();
    
    }
    
    return output.toString();
    
}

    errors :

    result1 :
    result2:ffmpeg version 3.1.1-static
    http://johnvansickle.com/ffmpeg/ Copyright (c) 2000-2016 the FFmpeg
    developers
    built with gcc 5.4.0 (Debian 5.4.0-4) 20160609
    configuration : —enable-gpl —enable-version3 —enable-static
    —disable-debug —enable-libmp3lame —enable-libx264 —enable-libx265 —enable-libwebp —enable-libspeex —enable-libvorbis —enable-libvpx —enable-libfreetype —enable-fontconfig —enable-libxvid —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-libtheora —enable-libvo-amrwbenc —enable-gray —enable-libopenjpeg —enable-libopus —enable-libass —enable-gnutls —enable-libvidstab —enable-libsoxr —enable-frei0r —enable-libfribidi —disable-indev=sndio —disable-outdev=sndio —enable-librtmp —enable-libmfx —enable-libzimg —cc=gcc
    libavutil 55. 28.100 / 55. 28.100
    libavcodec 57.
    48.101 / 57. 48.101
    libavformat 57. 41.100 / 57. 41.100
    libavdevice 57. 0.101 / 57. 0.101
    libavfilter
    6. 47.100 / 6. 47.100
    libswscale 4. 1.100 / 4. 1.100
    libswresample 2. 1.100 / 2. 1.100
    libpostproc
    54. 0.100 / 54. 0.100
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from ’/home/web/tomcat-6.0.29/zhouletest/videos/6.mp4’ :
    Metadata :

    major_brand : isom
    minor_version : 512
    compatible_brands : isomiso2avc1mp41
    encoder : Lavf56.40.101
    Duration : 00:04:36.64, start : -3.338000, bitrate : 1089 kb/s
    Stream #0:0(und) : Video : h264 (Main) (avc1 / 0x31637661), yuv420p, 480x360, 997 kb/s, 15 fps, 15 tbr, 16k tbn, 30 tbc (default)
    Metadata :
    handler_name : VideoHandler
    Stream #0:1(und) : Audio : aac (Main) (mp4a / 0x6134706D), 22050 Hz, stereo, fltp, 88 kb/s (default)
    Metadata :
    handler_name : SoundHandler
    Input #1, png_pipe, from ’/home/web/tomcat-6.0.29/zhouletest/gif_images/palettegens/6.png’ :

    Duration : N/A, bitrate : N/A
    Stream #1:0 : Video : png, rgba(pc), 16x16 [SAR 1:1 DAR 1:1], 25 tbr, 25 tbn, 25 tbc
    [AVFilterGraph @ 0x45c5260] No such filter :
    ’"fps’
    Error initializing complex filters.
    Invalid
    argument

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