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Autres articles (35)

  • Support de tous types de médias

    10 avril 2011

    Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...) ; audio (MP3, Ogg, Wav et autres...) ; vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...) ; contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google Earth) (...)

  • Other interesting software

    13 avril 2011, par

    We don’t claim to be the only ones doing what we do ... and especially not to assert claims to be the best either ... What we do, we just try to do it well and getting better ...
    The following list represents softwares that tend to be more or less as MediaSPIP or that MediaSPIP tries more or less to do the same, whatever ...
    We don’t know them, we didn’t try them, but you can take a peek.
    Videopress
    Website : http://videopress.com/
    License : GNU/GPL v2
    Source code : (...)

  • Keeping control of your media in your hands

    13 avril 2011, par

    The vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
    While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
    MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
    MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...)

Sur d’autres sites (8037)

  • oggdec : fix invalid free on error

    30 août 2014, par wm4
    oggdec : fix invalid free on error

    The read_packet callback passes a pointer to a stack-allocated AVPacket.
    
Attempting to free it with av_free() makes no sense.
    

    Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
    • [DH] libavformat/oggdec.c

  • Can I use ffmpeg's default Arial font commercially-free ?

    11 avril 2021, par batatop

    I'm trying to find out if I can use ffmpeg's default Arial font commercially-free when burning subtitles to videos.

    &#xA;

    There are a lot of Arial fonts out there and I don't know which ones are free to use. I'm just trying to use the one that comes default with ffmpeg.

    &#xA;

    I know that Arial MS can be used on a Windows machine but I will use ffmpeg in an Ubuntu machine.

    &#xA;

    Thank you for your concern.

    &#xA;

  • Bad pictures displayed by SDL after decoded using ffmpeg from a rtp stream

    2 juin 2015, par clouyfsail

    My program is a H323 endpoint.I receive a H263 rtp stream from H323 protocol stack,and I need to decode and play it with SDL2.0.

    Here is what I did.Firstly I assembled rtp packets into H263 frames myself before decode them.After I got a H263 frame, I sent it to ffmpeg to decode it.Just like this :

    void DecodeFrame(uint8_t *buff, unsigned size)
    
{
    
    //There is no rtp header in this buff,just rtp payload,and this is a 
    
    //a complete frame
    
    if(!buff || size &lt;= 0)
    
        return;
    
    AVPacket packet;
    
    av_init_packet(&amp;packet);
    
    int got_picture = 0;
    

    
    packet.data = buff;
    
    packet.size = size;
    

    
    //I have assigned a H263 codec and initialized corresponding structures.
    
    int len = avcodec_decode_video2(m_codec_context, m_picture, 
    
                                    &amp;got_picture, &amp;packet);
    

    
    if(len &lt; 0)
    
        return;
    

    
    if (got_picture)
    
    {
    
        packet.pts = AV_NOPTS_VALUE;
    
        sws_scale(m_sws_context, (const uint8_t *  const *)m_picture->data,
    
                  m_picture->linesize, 0, m_codec_context->height, m_yuv_frame->data,
    
                  m_yuv_frame->linesize);
    

    
        SDL_UpdateYUVTexture(m_sdl_texture, &amp;m_sdl_rect, 
    
                             m_yuv_frame->data[0], m_yuv_frame->linesize[0],
    
                             m_yuv_frame->data[1], m_yuv_frame->linesize[1],
    
                             m_yuv_frame->data[2], m_yuv_frame->linesize[2]);
    
        SDL_RenderClear(m_sdl_renderer);
    
        SDL_RenderCopy(m_sdl_renderer, m_sdl_texture, nullptr, &amp;m_sdl_rect);
    
        SDL_RenderPresent(m_sdl_renderer);
    
    }
    
}

    It worked, but not as I wished.At the begining of the play,I got a foggy picture,then it turned to clear in a strange way.The image became clear row by row.After that,it turned to foggy sharply if the scene changed drastically(In remote endpoint,the source of video is a camera),and it became clear slowly row by row again.This confuses me much.I want to know why this happened.

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