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  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

  • Participer à sa documentation

    10 avril 2011

    La documentation est un des travaux les plus importants et les plus contraignants lors de la réalisation d’un outil technique.
    Tout apport extérieur à ce sujet est primordial : la critique de l’existant ; la participation à la rédaction d’articles orientés : utilisateur (administrateur de MediaSPIP ou simplement producteur de contenu) ; développeur ; la création de screencasts d’explication ; la traduction de la documentation dans une nouvelle langue ;
    Pour ce faire, vous pouvez vous inscrire sur (...)

  • Contribute to a better visual interface

    13 avril 2011

    MediaSPIP is based on a system of themes and templates. Templates define the placement of information on the page, and can be adapted to a wide range of uses. Themes define the overall graphic appearance of the site.
    Anyone can submit a new graphic theme or template and make it available to the MediaSPIP community.

Sur d’autres sites (6030)

  • lavd/v4l2 : Add ARGB and XRGB packed pixel formats

    10 mai 2018, par Anton Leontiev
    lavd/v4l2 : Add ARGB and XRGB packed pixel formats

    Formats ARGB32, XRGB32, ABGR32, and XBGR32 were added to V4L2 instead
    
of ill-defined deprecated RGB32/BGR32 pixel formats.
    

    When pixel format is not specified explicitly FFmpeg tries formats in
    
order in which they are stored in the table. Therefore formats are
    
sorted as follows : BGR is preferred over RGB and XBGR is preferred
    
over ARGB, because it could give better performance by ignoring alpha
    
component.
    • [DH] libavdevice/v4l2-common.c

  • How do I write audio and video to the same file using FFMPEG and C ?

    29 juin 2018, par benwiz

    I am consuming an audio file and a video file using ffmpeg in a C program. I am modifying both the audio and the video data. In working the code below I write both each of these streams to its own file. How can I write both streams to the same file ?

    #include 
    
#include 
    
#include 
    

    
// Video resolution
    
#define W 1280
    
#define H 720
    

    
// Allocate a buffer to store one video frame
    
unsigned char video_frame[H][W][3] = {0};
    

    
int main()
    
{
    
    // Audio pipes
    
    FILE *audio_pipein = popen("ffmpeg -i data/daft-punk.mp3 -f s16le -ac 1 -", "r");
    
    FILE *audio_pipeout = popen("ffmpeg -y -f s16le -ar 44100 -ac 1 -i - out/daft-punk.mp3", "w");
    

    
    // Video pipes
    
    FILE *video_pipein = popen("ffmpeg -i data/daft-punk.mp4 -f image2pipe -vcodec rawvideo -pix_fmt rgb24 -", "r");
    
    FILE *video_pipeout = popen("ffmpeg -y -f rawvideo -vcodec rawvideo -pix_fmt rgb24 -s 1280x720 -r 25 -i - -f mp4 -q:v 5 -an -vcodec mpeg4 out/daft-punk.mp4", "w");
    

    
    // Audio vars
    
    int16_t audio_sample;
    
    int audio_count;
    
    int audio_n = 0;
    

    
    // Video vars
    
    int x = 0;
    
    int y = 0;
    
    int video_count = 0;
    

    
    // Read, modify, and write one audio_sample and video_frame at a time
    
    while (1)
    
    {
    
        // Audio
    
        audio_count = fread(&audio_sample, 2, 1, audio_pipein); // read one 2-byte audio_sample
    
        if (audio_count == 1)
    
        {
    
            ++audio_n;
    
            audio_sample = audio_sample * sin(audio_n * 5.0 * 2 * M_PI / 44100.0);
    
            fwrite(&audio_sample, 2, 1, audio_pipeout);
    
        }
    

    
        // Video
    
        video_count = fread(video_frame, 1, H * W * 3, video_pipein); // Read a frame from the input pipe into the buffer
    
        if (video_count == H * W * 3)                                 // Only modify and write if frame exists
    
        {
    
            for (y = 0; y < H; ++y)     // Process this frame
    
                for (x = 0; x < W; ++x) // Invert each colour component in every pixel
    
                {
    
                    video_frame[y][x][0] = 255 - video_frame[y][x][0]; // red
    
                    video_frame[y][x][1] = 255 - video_frame[y][x][1]; // green
    
                    video_frame[y][x][2] = 255 - video_frame[y][x][2]; // blue
    
                }
    
            fwrite(video_frame, 1, H * W * 3, video_pipeout); // Write this frame to the output pipe
    
        }
    

    
        // Break if both complete
    
        if (audio_count != 1 && video_count != H * W * 3)
    
            break;
    
    }
    

    
    // Close audio pipes
    
    pclose(audio_pipein);
    
    pclose(audio_pipeout);
    

    
    // Close video pipes
    
    fflush(video_pipein);
    
    fflush(video_pipeout);
    
    pclose(video_pipein);
    
    pclose(video_pipeout);
    

    
    return 0;
    
}

    I took the base for this code from this article.

    Thanks !

  • Issues with fluent-ffmpeg plugin in angular-cli project

    8 août 2018, par Esco

    I’have installed ’fluent-ffmpeg’ plugin in my project and I’m including it in the following way in my component.ts file

    declare var require;
    
var ffmpeg = require('fluent-ffmpeg');

    I’m getting the following issues while building using ng serve

    ERROR in ./node_modules/fluent-ffmpeg/index.js
    
Module not found: Error: Can't resolve './lib-cov/fluent-ffmpeg' in '/home/projects/angular/demo/node_modules/fluent-ffmpeg'
    
ERROR in ./node_modules/fluent-ffmpeg/lib/ffprobe.js
    
Module not found: Error: Can't resolve 'child_process' in '/home/projects/angular/demo/node_modules/fluent-ffmpeg/lib'
    
ERROR in ./node_modules/fluent-ffmpeg/lib/utils.js
    
Module not found: Error: Can't resolve 'child_process' in '/home/projects/angular/demo/node_modules/fluent-ffmpeg/lib'
    
ERROR in ./node_modules/fluent-ffmpeg/lib/processor.js
    
Module not found: Error: Can't resolve 'child_process' in '/home/projects/angular/demo/node_modules/fluent-ffmpeg/lib'
    
ERROR in ./node_modules/fluent-ffmpeg/lib/recipes.js
    
Module not found: Error: Can't resolve 'fs' in '/home/projects/angular/demo/node_modules/fluent-ffmpeg/lib'
    
ERROR in ./node_modules/fluent-ffmpeg/lib/capabilities.js
    
Module not found: Error: Can't resolve 'fs' in '/home/projects/angular/demo/node_modules/fluent-ffmpeg/lib'
    
ERROR in ./node_modules/fluent-ffmpeg/lib/processor.js
    
Module not found: Error: Can't resolve 'fs' in '/home/projects/angular/demo/node_modules/fluent-ffmpeg/lib'
    
ERROR in ./node_modules/isexe/windows.js
    
Module not found: Error: Can't resolve 'fs' in '/home/projects/angular/demo/node_modules/isexe'
    
ERROR in ./node_modules/isexe/mode.js
    
Module not found: Error: Can't resolve 'fs' in '/home/projects/angular/demo/node_modules/isexe'
    
ERROR in ./node_modules/isexe/index.js
    
Module not found: Error: Can't resolve 'fs' in '/home/projects/angular/demo/node_modules/isexe'
    
ERROR in ./node_modules/fluent-ffmpeg/lib/utils.js
    
Module not found: Error: Can't resolve 'os' in '/home/projects/angular/demo/node_modules/fluent-ffmpeg/lib'
    
ERROR in ./node_modules/fluent-ffmpeg/lib/fluent-ffmpeg.js
    
Module not found: Error: Can't resolve 'path' in '/home/projects/angular/demo/node_modules/fluent-ffmpeg/lib'
    
ERROR in ./node_modules/fluent-ffmpeg/lib/processor.js
    
Module not found: Error: Can't resolve 'path' in '/home/projects/angular/demo/node_modules/fluent-ffmpeg/lib'
    
ERROR in ./node_modules/fluent-ffmpeg/lib/recipes.js
    
Module not found: Error: Can't resolve 'path' in '/home/projects/angular/demo/node_modules/fluent-ffmpeg/lib'
    
ERROR in ./node_modules/fluent-ffmpeg/lib/capabilities.js
    
Module not found: Error: Can't resolve 'path' in '/home/projects/angular/demo/node_modules/fluent-ffmpeg/lib'
    
ERROR in ./node_modules/fluent-ffmpeg/lib/options/misc.js
    
Module not found: Error: Can't resolve 'path' in '/home/projects/angular/demo/node_modules/fluent-ffmpeg/lib/options'
    
ERROR in ./node_modules/which/which.js
    
Module not found: Error: Can't resolve 'path' in '/home/projects/angular/demo/node_modules/which'
    
ERROR in ./node_modules/fluent-ffmpeg/lib/recipes.js
    
Module not found: Error: Can't resolve 'stream' in '/home/projects/angular/demo/node_modules/fluent-ffmpeg/lib'
    
ℹ ｢wdm｣: Failed to compile.

    Can somebody help me in resolving this ?

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