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  • Submit bugs and patches

    13 avril 2011

    Unfortunately a software is never perfect.
    If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
    If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
    You may also (...)

  • HTML5 audio and video support

    13 avril 2011, par

    MediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
    The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
    For older browsers the Flowplayer flash fallback is used.
    MediaSPIP allows for media playback on major mobile platforms with the above (...)

  • Support audio et vidéo HTML5

    10 avril 2011

    MediaSPIP utilise les balises HTML5 video et audio pour la lecture de documents multimedia en profitant des dernières innovations du W3C supportées par les navigateurs modernes.
    Pour les navigateurs plus anciens, le lecteur flash Flowplayer est utilisé.
    Le lecteur HTML5 utilisé a été spécifiquement créé pour MediaSPIP : il est complètement modifiable graphiquement pour correspondre à un thème choisi.
    Ces technologies permettent de distribuer vidéo et son à la fois sur des ordinateurs conventionnels (...)

Sur d’autres sites (4911)

  • How to flush buffer data to disk when using FFmpeg to write a mp4 file ?

    9 juin 2016, par Sean

    I am using FFmpeg to write a mp4 file, I grab bitmap images from remote IP camera and encode it by h.264, the media container is mp4 file, no problem to generate the MP4 file if I only record several minutes, the problem is FFmpeg never flushs buffer data to disk when I call method "av_interleaved_write_frame"(all encoded data in memory, never free them), only when I call method "avio_close(oc->pb) ;", it will flush all encoded data to disk, I tried to call method "avcodec_flush_buffers" every time after calling "av_interleaved_write_frame", but no effect. I am newbie to FFmpeg, if you are familiar with FFmpeg, please help me.

    thanks in advance.

    Sean

  • avcodec/webvttenc : Don't copy data around unnecessarily

    17 février 2024, par Andreas Rheinhardt
    avcodec/webvttenc : Don't copy data around unnecessarily

    Using av_bprint_init_for_buffer() avoids copying data
    
into the internal AVBPrint buffer (or worse : to allocate
    
a temporary buffer in case the internal buffer does not
    
suffice). It also ensures that the data is always
    
0-terminated.
    

    Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
    • [DH] libavcodec/webvttenc.c

  • Sdd watermark to YUV video data (SDL_Overlay) programmatically

    2 septembre 2012, par user325320

    My application plays video via SDL + ffmpeg library(not the exe tool).

    and I want to add the text onto the video

    The ffmpeg's VHOOK source code shows it converts the data to RGB32.
    Can't it be done in YUV directly ?

    Here my current code, can you please give me some suggestion ?

    SDL_Overlay * pOverlay = SDL_CreateYUVOverlay( pDecodedFrame->width
    
            , pDecodedFrame->height
    
            , SDL_YV12_OVERLAY
    
            , pThis->m_pSurface
    
            );
    
if( pOverlay != NULL )
    
{
    
    SDL_LockYUVOverlay(pOverlay);
    

    
    pSwsContext = sws_getCachedContext( pSwsContext
    
        , pDecodedFrame->width
    
        , pDecodedFrame->height
    
        , pThis->m_pMediaFile->GetVideoPixcelFormat()
    
        , pDecodedFrame->width
    
        , pDecodedFrame->height
    
        , PIX_FMT_YUV420P
    
        , SWS_SPLINE
    
        , NULL
    
        , NULL
    
        , NULL
    
        );
    

    
    AVPicture tPicture;
    
    tPicture.data[0] = pOverlay->pixels[0];
    
    tPicture.data[1] = pOverlay->pixels[2];
    
    tPicture.data[2] = pOverlay->pixels[1];
    

    
    tPicture.linesize[0] = pOverlay->pitches[0];
    
    tPicture.linesize[1] = pOverlay->pitches[2];
    
    tPicture.linesize[2] = pOverlay->pitches[1];
    

    
    int nSliceHeight = sws_scale( pSwsContext
    
        , pDecodedFrame->data
    
        , pDecodedFrame->linesize
    
        , 0
    
        , pDecodedFrame->height
    
        , tPicture.data
    
        , tPicture.linesize
    
        );
    

    

    
    SDL_UnlockYUVOverlay(pOverlay);
    
    VideoPicture tVideoPicture = {0};
    
    tVideoPicture.pOverlay = pOverlay;
    
    tVideoPicture.nWidth = pDecodedFrame->width;
    
    tVideoPicture.nHeight = pDecodedFrame->height;
    
    tVideoPicture.dbPTS = dbPTS;
    

    
    pThis->m_pVideoPictureQueue.Append(tVideoPicture);
    
}

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