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  • 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 (...)

  • Participer à sa traduction

    10 avril 2011

    Vous pouvez nous aider à améliorer les locutions utilisées dans le logiciel ou à traduire celui-ci dans n’importe qu’elle nouvelle langue permettant sa diffusion à de nouvelles communautés linguistiques.
    Pour ce faire, on utilise l’interface de traduction de SPIP où l’ensemble des modules de langue de MediaSPIP sont à disposition. ll vous suffit de vous inscrire sur la liste de discussion des traducteurs pour demander plus d’informations.
    Actuellement MediaSPIP n’est disponible qu’en français et (...)

  • Websites made ​​with MediaSPIP

    2 mai 2011, par

    This page lists some websites based on MediaSPIP.

Sur d’autres sites (11541)

  • Libavcodec and QuickSync

    15 février 2016, par FrancescoBLT

    I’m attempting to encode in h264 format using libavcodec with and without QuickSync hardware acceleration. If I don’t use the hw acceleration is quite simple :

    ff_codec = avcodec_find_encoder(AV_CODEC_ID_H264) ;

    ff_cdctx = avcodec_alloc_context3(ff_codec) ;

    ff_cdctx->width = 1920;
    
ff_cdctx->height = 1080;
    
ff_cdctx->time_base.num = 1;
    
ff_cdctx->time_base.den = 25;
    
ff_cdctx->sample_aspect_ratio.num = 16;
    
ff_cdctx->sample_aspect_ratio.den = 9;
    
ff_cdctx->pix_fmt = AV_PIX_FMT_YUV420P;
    
av_dict_set(&param,"profile","main",0);
    
av_dict_set(&param,"preset","medium",0);
    
av_dict_set(&param,"tune","film",0)<0);
    
ff_cdctx->gop_size = 10;
    
ff_cdctx->max_b_frames = 1;
    
opres = avcodec_open2(ff_cdctx,ff_codec,&param);
    
ff_frame = av_frame_alloc();
    
ff_frame->format = ff_cdctx->pix_fmt;
    
ff_frame->width  = ff_cdctx->width;
    
ff_frame->height = ff_cdctx->height; 
    

    
opres = av_image_alloc(ff_frame->data, ff_frame->linesize,ff_cdctx->width,ff_cdctx->height,ff_cdctx->pix_fmt, 32);
    
ff_frame->linesize[0] = ff_cdctx->width;
    
ff_frame->linesize[1] = ff_frame->linesize[2] = ff_cdctx->width>>1;
    

    
ff_frame->sample_aspect_ratio.num = ff_cdctx->sample_aspect_ratio.num;
    
ff_frame->sample_aspect_ratio.den = ff_cdctx->sample_aspect_ratio.den;
    
av_init_packet(&pkt);
    
enc_err = avcodec_encode_video2(ff_cdctx,&pkt,ff_frame,&got_pkt);  }

    And so on for all source frame. Problem arise when I attempt to use hardware
    acceleration. In this case I use :

    ff_codec = avcodec_find_encoder_by_name("h264_qsv") ;
    for gathering the codec. But when I attempt to open it, the result is "invalid parameter" :
    opres = avcodec_open2(ff_cdctx,ff_codec,&param) ;
    if(opres<0)

    if(av_strerror(opres,err_str,256)==0) OutputDebugStringA(err_str) ;
    return -6 ;

    Did anyone have attempted to use QuickSync from code ? In the examples there is only one file (qsvdec.c) and is for decoding, not for encoding.
    regards

  • What is the commmand line to record destop screen with watermark using ffmpeg ?

    11 septembre 2020, par Yong Ju

    I tried to record screen using ffmpeg commmand line. So, I have complete it using this commmand.&#xA;ffmpeg.exe -rtbufsize 1500M -f -y -rtbufsize 100M -f gdigrab -t 00:02:00 -framerate 30 0 0 -probesize 10M 1920 1080 -draw_mouse 1 -i desktop -c:v libx264 -r 30 -preset ultrafast -tune zerolatency -crf 30 -pix_fmt yuv420p output.avi".

    &#xA;

    Now, I want to add watermark while recording video.&#xA;If you have good experience this field, Please give me good advice.&#xA;Thanks for your attention.&#xA;Sincerely.

    &#xA;

  • How to create ffmpeg mosaic with empty cells ?

    7 septembre 2020, par DenVebber

    I try to create video mosaic with ffmpeg.

    &#xA;

    Two videos with horizontal stack :

    &#xA;

    ffmpeg -i vid1.mp4 -i vid2.mp4 -filter_complex "[0]scale=-1:1080[v0];[1]scale=-1:1080[v1];[v0][v1]hstack=inputs=2[vmap]" -map "[vmap]" output.mp4

    &#xA;

    How can I replace vid1.mp4 with black background and save the stack with 2 elements ?&#xA;I can add blackvideo.mp4, but it should be easier, right ?

    &#xA;

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