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Sur d’autres sites (13145)

  • Failed to load required native libraries exception in an Outlook plugin / add-in

    30 mai 2023, par El_T

    We have an Outlook add-in which is failing to run 3rd party media player controls on a WinForm :

    


    "Could not load file or assembly" or "Failed to load required native libraries"

    


    We tried posting out on the Github repos :

    


    https://github.com/SuRGeoNix/Flyleaf/issues/308

    


    https://code.videolan.org/videolan/LibVLCSharp/-/issues/611#note_386617

    


    We also tried copying dll's etc. It seems to be with the actual loading process or permissions in some way.

    


    The media players are not running.

    


  • vf_scale : give a clue in case of invalid expression self-reference

    4 décembre 2011, par Stefano Sabatini

    vf_scale : give a clue in case of invalid expression self-reference

  • Can someone give a clue with those errors from gcc ?

    17 mars 2020, par GiuTor

    I have this code :

    #include 
    
#include 
    
#include <libavcodec></libavcodec>avcodec.h>
    
#include <libavutil></libavutil>opt.h>
    
#include <libavformat></libavformat>avformat.h>
    

    
int main(int argc, char **argv)
    
{
    
    avcodec_register_all();
    
    av_register_all();
    

    
    struct AVCodecTag * const *avctag;
    
    AVOutputFormat *outputFormat = NULL;
    

    
    const char *file = "file.mp4";
    
    outputFormat = av_guess_format(0, file, 0);
    

    
    if( ! outputFormat)
    
    {
    
        printf ("No container found\n");
    
        exit (1);
    
    }
    
    printf("%s %d\n",outputFormat->long_name,outputFormat->video_codec);
    

    
    avctag = outputFormat->codec_tag[0];
    
    printf("%d\n",avctag->id);
    
}

    The compiler gives this weird error even though I used the -> in the printf line :

    error: ‘*avctag’ is a pointer; did you mean to use ‘->’?
    
  printf("%d\n",avctag->id);

    But it gives also a warning :

    warning: assignment from incompatible pointer type [-Wincompatible-pointer-types]
    
  avctag = outputFormat->codec_tag;

    AVOutputFormat:codec_tag is defined according to the docs as :

    struct AVCodecTag * const *

    That is exactly as I defined the pointer above. Can someone give me a clue why I get the warning and the error ?

    Many thanks

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