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  • 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 (8259)

  • How to Play Smooth 4K Video with FFplay ? [closed]

    14 mai 2020, par Matan Marciano

    Im trying to play 4K video with ffplay and the video is not smooth.

    



    Video File :

    



    



    Hardware :

    



      

    • Dell OptiPlex 7070 Micro (8 Cores, 8GB RAM, GPU : Intel Corporation UHD Graphics 630)

      • 


    • Samsung U28E590D, 4K Screen

      • 


    • DisplayPort to HDMI Cable

      • 


    



    Software :

    



    



    The FFplay command I used is : ffplay -vcodec h264_qsv -i input.ts

    



      

    • Notes :

      • 


    • During the playing, my CPU usage is around 25% (according to 'top' command)

      • 


    • FFplay logs indicate on many frame drops

      • 


    • I also tried VLC and MPV player's- VLC looks bad also. MPV player looks better but still not smooth.

      • 


    



    So, its looks like my hardware is good enough for 4K playing. What am I missing ?
How can I play smooth 4K video via FFplay ?

    


  • FFMPEG throwing error nb_cpb invalid, what went wrong ?

    21 août 2023, par qkhanhpro

    I am trying to play with this file from Kodi sample page https://kodi.wiki/view/Samples

    


    


    HDR10+ Profile A HEVC 10-bit 23.976 Sample (in MKV with DTS:X audio)

    


    


    The ffmpeg command throw this error on every line, with the number always being 93 for multiple different output video codec

    


    nb_cpb 93 invalid.0 q=0.0 size=       0kB time=00:00:00.65 bitrate=   0.5kbits/s speed=3.95x  


    


    A search point to this source file https://github.com/FFmpeg/FFmpeg/blob/master/libavcodec/hevc_ps.c

    


    if (!hdr->flags.low_delay_hrd_flag) {
    hdr->cpb_cnt_minus1[i] = get_ue_golomb_long(gb);
    if (hdr->cpb_cnt_minus1[i] > 31) {
        av_log(NULL, AV_LOG_ERROR, "nb_cpb %d invalid\n",
               hdr->cpb_cnt_minus1[i]);
        return AVERROR_INVALIDDATA;
    }
}


    


    What went wrong ?

    


    ffmpeg -i E:\HDR.mkv -c:v libx265 -c:a copy "HDR.mp4" 

ffmpeg -i E:\HDR.mkv -c:v hevc_nvenc -c:a copy "HDR.mp4" 


    


  • rtl_fm piped to ffmpeg for udp stream

    4 novembre 2014, par user3936148

    rtl_fm piped to ffmpeg for udp stream

    Using Windows 7. I would like to pipe the rtl_fm standard out (pipe) to ffmpeg and udp stream it to an ip address. I have downloaded and installed rlt_sdr and other files and I have also installed sox. The console example given with the rtl_fm application using sox to play the radio station is below :

    rtl_fm -f 106500000 -M wbfm -s 200000 -r 48000 -l 0 -E deemp -g 50 - | play -r 48000 -t s16 -L -c 1 -

    This works great, using sox.

    Update :

    Below works with ffplay sounds ok not great..

    rtl_fm -f 106500000 -M wbfm -s 200000 -r 48000 -l 0 -E deemp -g 80- | ffplay -f s16le -ar 48000 -ac 1 -

    I would like to use ffmpeg instead, below is a non working example (just to give you an idea)

    rtl_fm -f 106500000 -M wbfm -s 200000 -r 48000 -l 0 -E deemp -g 50 - | ffmpeg -i - -f s16le -ar 48000 -ac 1 -acodec libmp3lame -ab 24k -ar 22050 -f mpegts udp ://192.168.1.196:1234 -

    useful links :

    http://kmkeen.com/rtl-demod-guide/

    http://sdr.osmocom.org/trac/wiki/rtl-sdr

    Thank you for your help

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