Difference between revisions of "LibVLC SampleCode Thumbnailer"

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This sample code will generate a thumbnail from any media.
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{{Lowercase}}
<pre>
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Moved [http://git.videolan.org/?p=vlc.git;a=blob;f=doc/libvlc/vlc-thumb.c].
/* Copyright [[User:Funman|Rafael Carre]] (licence [http://en.wikipedia.org/wiki/WTFPL WTFPL]) */
 
#include <stdio.h>
 
#include <vlc/libvlc.h>
 
#include <stdlib.h>
 
#include <string.h>
 
#include <unistd.h>
 
  
static libvlc_exception_t ex;
+
[[Category:libVLC]]
 
 
static void catch (void)
 
{
 
    if (libvlc_exception_raised (&ex))
 
    {
 
        fprintf (stderr, "Exception: %s\n",
 
                libvlc_exception_get_message (&ex));
 
        exit(1);
 
    }
 
 
 
    libvlc_exception_clear (&ex);
 
}
 
 
 
#define usage() \
 
        fprintf( stderr, \
 
            "Usage: %s input output\n" \
 
            "input being any video VLC can read, and output a png file" \
 
            , argv[0] )
 
 
 
int main( int argc, const char **argv )
 
{
 
    if( argc != 3 )
 
    {
 
        usage();
 
        if( argc == 2 && ( !strcmp( argv[1], "-h" ) || strcmp( argv[1], "--help") ) )
 
            return 0;
 
        else
 
            return 1;
 
    }
 
 
 
    const char *input = argv[1];
 
    const char *output = argv[2];
 
 
 
    libvlc_exception_init( &ex );
 
 
 
    const char* const args[] = {
 
        "-I", "dummy",                      /* no interface */
 
        "--vout", "dummy",                  /* we don't want video */
 
        "--no-audio",                      /* we don't want audio */
 
        "--verbose=1",                      /* show only errors & warnings */
 
        "--no-media-library",              /* don't want that */
 
        "--services-discovery", "",        /* nor that */
 
        "--no-video-title-show",            /* nor the filename displayed */
 
        "--no-sub-autodetect",              /* don't want subtitles */
 
        "--control", "",                    /* don't want interface */
 
        "--extraintf", ""                  /* AT ALL ! */
 
    };
 
 
 
    int nargs = sizeof(args) / sizeof(args[0]);
 
    libvlc_instance_t *libvlc = libvlc_new( nargs, args, &ex );
 
    catch();
 
 
 
    libvlc_media_instance_t *mi;
 
    libvlc_media_descriptor_t *md;
 
 
 
    md = libvlc_media_descriptor_new( libvlc, input, &ex );
 
    catch();
 
 
 
    mi = libvlc_media_instance_new_from_media_descriptor( md, &ex );
 
    catch();
 
   
 
    libvlc_media_descriptor_release( md );
 
 
 
    libvlc_media_instance_play( mi, &ex );
 
    catch();
 
 
 
    /* go to position 30% to avoid introductions */
 
    libvlc_media_instance_set_position( mi, 0.30, &ex );
 
    catch();
 
 
 
    /* leave vlc some time to start playing */
 
    sleep(1);
 
 
 
    libvlc_video_take_snapshot( mi, (char*)output, &ex );
 
    catch();
 
 
 
    libvlc_media_instance_stop( mi, &ex );
 
    catch();
 
 
 
    libvlc_media_instance_release( mi );
 
 
 
    libvlc_release( libvlc, &ex );
 
    catch();
 
 
 
    return 0;
 
}
 
</pre>
 

Latest revision as of 08:35, 4 March 2019

Moved [1].