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Autres articles (42)

  • 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" (...)

  • 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 : (...)

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  • YUY2 image ==>>sws_scale ==>>x264_encoder_encode doesn't work in Windows

    8 décembre 2011, par shiju sasi

    I have a multi media app in Windows using x264 built using MSYS-MingW and ffmpeg Windows binaries. This works for most of the cameras which capture data in RGB24 and RGB32 formats in most of the OSes. But when I tested the app on a Windows 7 (64 bit OS) Sony Vaio Laptop which has an integrated webcam capturing in YUY2 format, the x264_enoder_encode crashes. The sws_scale to convert the YUY2 data to YUV420 Planar any way works fine here too and returns proper stride values. Please check the relevant code fragments that I have attached below.

         x264_param_apply_profile(&m_param, "baseline");
    
       m_pEncoder = x264_encoder_open(&m_param);
    
       x264_encoder_parameters(m_pEncoder,&m_param);
    

    
       m_encoderConvertCtx = sws_getContext(g_iWidth, g_iHeight, PIX_FMT_YUYV422, SCALE_WIDTH, SCALE_HEIGHT, PIX_FMT_YUV420P, SWS_BICUBIC, NULL, NULL, NULL);
    

    
       x264_picture_t m_pic_in, m_pic_out;   //X264 picture variables to get the X264 encoded picture out.
    
       x264_picture_init(&m_pic_in);
    
 m_pic_in.i_type = X264_CSP_I420;
    

    
 x264_nal_t*  m_nals;
    

    

    
 srcstride = g_iWidth * 2;  //For YUYV422 Packed
    

    
 AVFrame* pictIn;
    
 AVFrame* pictOut;
    

    
 int iInBytes = avpicture_get_size(PIX_FMT_YUV420P, SCALE_WIDTH, SCALE_HEIGHT); 
    
 uint8_t* outbuffer = (uint8_t*)av_malloc(iInBytes); 
    
 pictOut = avcodec_alloc_frame(); 
    

    
 avpicture_fill((AVPicture*)pictOut, outbuffer, PIX_FMT_YUV420P, SCALE_WIDTH, SCALE_HEIGHT); 
    

    
 sws_scale(m_encoderConvertCtx, &in_buf, &srcstride, 0, g_iHeight, pictOut->data, pictOut->linesize); //Scale from YUYV422 Packed to YUV420 Plane
    

    

    
///Code after Scale begins
    

    
memcpy(m_pic_in.img.plane[0],pictOut->data[0],SCALE_WIDTH * SCALE_HEIGHT);
    
memcpy(m_pic_in.img.plane[1],pictOut->data[1],SCALE_WIDTH * SCALE_HEIGHT/4);
    
memcpy(m_pic_in.img.plane[2],pictOut->data[2],SCALE_WIDTH * SCALE_HEIGHT/4);
    
m_pic_in.img.plane[3] = 0; 
    

    
for(int iPlane = 0; iPlane < 3; iPlane++)
    
{
    
 m_pic_in.img.i_stride[iPlane] = pictOut->linesize[iPlane];
    
}
    
m_pic_in.img.i_stride[3] = 0;
    

    
int frame_size = x264_encoder_encode(m_pEncoder, &m_nals, &i_nals, &m_pic_in, &m_pic_out);

    Please help if possible, as this has been consuming a lot of time at my end. But I am not able to dig in to the library side for debugging. Any experienced hands are requested to assist.

  • 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

  • using ffmpeg for live streaming MPEG-TS with windows media services

    14 mars 2012, par Yanniv

    I'm trying to live stream MPEG-TS source to Windows Media service.
    I found how to live stream using RTMP with this code :

    ffmpeg -y -f mpegts -i udp://@:1234 -re -vcodec libx264 -maxrate 700k
    
-r 25 -s 640x360 -deinterlace -acodec libvo_aacenc -ab 64k -ac 1 -ar 44100 -f flv "rtmp://rtmp1.youtube.com/videolive?sparams=<stream parameters="parameters" here="here">"
    
</stream>
    • How can I convert it to support WM9/VC1 format ?
    • Does ffmpeg support pulling of the stream or only pushing to Windows Media services ?

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