Recherche avancée

Médias (1)

Mot : - Tags -/pirate bay

Autres articles (103)

  • MediaSPIP 0.1 Beta version

    25 avril 2011, par

    MediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
    The zip file provided here only contains the sources of MediaSPIP in its standalone version.
    To get a working installation, you must manually install all-software dependencies on the server.
    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

  • Websites made ​​with MediaSPIP

    2 mai 2011, par

    This page lists some websites based on MediaSPIP.

  • Creating farms of unique websites

    13 avril 2011, par

    MediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
    This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...)

Sur d’autres sites (11082)

  • vorbisdec : read the previous window flag for long windows

    25 février 2012, par Justin Ruggles

    vorbisdec : read the previous window flag for long windows

  • ICL : fix out of tree building and resource file usage on Windows

    12 février 2012, par Steven Walters

    ICL : fix out of tree building and resource file usage on Windows

  • How to capture camera devices on Windows using Libav ?

    22 septembre 2011, par Occulta

    Is there any way to capture frames from as many camera types as DirectShow do on Windows platform using Libav ? I need to capture a camera output without using DirectShow filters and I want my application to work with many camera devices types.

    I have searched the Internet about this capability of libav and found that it can be done via libav using special input format "vfwcap". Something like that (don't sure about code correctness - I wrote it by myself) :

    AVFormatParameters formatParams = NULL;
    
AVInputFormat* pInfmt = NULL;
    
pInFormatCtx*  pInFormatCtx = NULL;
    

    
av_register_all();
    

    
//formatParams.device = NULL; //this was probably deprecated and then removed
    
formatParams.channel = 0;
    
formatParams.standard = "ntsc"; //deprecated too but still available
    
formatParams.width = 640;
    
formatParams.height = 480;
    
formatParams.time_base.num = 1000;
    
formatParams.time_base.den = 30000; //so we want 30000/1000 = 30 frames per second
    
formatParams.prealloced_context = 0;
    

    

    
pInfmt = av_find_input_format("vfwcap");
    
if( !pInfmt )
    
{
    
  fprintf(stderr,"Unknown input format\n");
    
  return -1;
    
}
    

    
// Open video file (formatParams can be NULL for autodetecting probably)
    
if (av_open_input_file(&pInFormatCtx, 0, pInfmt, 0, formatParams) < 0)
    
   return -1; // Couldn't open device
    

    
/* Same as video4linux code*/

    So another question is : how many devices are supported by Libav ? All I have found about capture cameras output with libav on windows is advice to use DirectShow for this purpose because libav supports too few devices. Maybe situation has already changed now and it does support enough devices to use it in production applications ?

    If this isn't possible.. Well I hope my question won't be useless and this composed from different sources piece of code will help someone interested in this theme 'coz there are really too few information about it in the whole internet.

Navigation