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  • 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" (...)

  • Les formats acceptés

    28 janvier 2010, par

    Les commandes suivantes permettent d’avoir des informations sur les formats et codecs gérés par l’installation local de ffmpeg :
    ffmpeg -codecs ffmpeg -formats
    Les format videos acceptés en entrée
    Cette liste est non exhaustive, elle met en exergue les principaux formats utilisés : h264 : H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 m4v : raw MPEG-4 video format flv : Flash Video (FLV) / Sorenson Spark / Sorenson H.263 Theora wmv :
    Les formats vidéos de sortie possibles
    Dans un premier temps on (...)

  • Les vidéos

    21 avril 2011, par

    Comme les documents de type "audio", Mediaspip affiche dans la mesure du possible les vidéos grâce à la balise html5 .
    Un des inconvénients de cette balise est qu’elle n’est pas reconnue correctement par certains navigateurs (Internet Explorer pour ne pas le nommer) et que chaque navigateur ne gère en natif que certains formats de vidéos.
    Son avantage principal quant à lui est de bénéficier de la prise en charge native de vidéos dans les navigateur et donc de se passer de l’utilisation de Flash et (...)

Sur d’autres sites (4105)

  • C api on capturing video stream from webcam using ffmpeg

    14 juillet 2013, par Tanjim Hossain Sifat

    I am a new user of ffmpeg. Ffmpeg has a good documentation on using it in command-line, but i am looking for some C API code.

    I want to make a software using C, that would capture video stream from webcam and give me the video stream in raw format, that I would encode in a codec later.

    I have visited this given link, but it provided only the command-line use, not the use of libraries provided by ffmpeg :
    http://ffmpeg.org/trac/ffmpeg/wiki/How%20to%20capture%20a%20webcam%20input

    I also visited this link, which gave me good idea on using the libavcodec, but no other tutorial is available :
    ffmpeg C API documentation/tutorial

    Please someone help me finding C api on video stream capturing from webcam using ffmpeg's library. Thanks in advance.

  • error = "sh : /root/bin/ffmpeg : Permission denied

    6 août 2015, par user1503606

    Ffmpeg install location.

    Hi All i am running Centos 6.6 and i installed ffmpeg using this guide following each step.

    http://trac.ffmpeg.org/wiki/CompilationGuide/Centos

    But when i try and run.

    $output = shell_exec("cd {$targetDir} && /root/bin/ffmpeg -i {$fileName} {$wav} 2>&1");

    I get

    sh : /root/bin/ffmpeg : Permission denied

    After reading through lots of post i believe i should not have installed ffmpeg in /root/bin/

    How do i install it in say /usr/local/bin ?

    I ran this.

    PKG_CONFIG_PATH="$HOME/ffmpeg_build/lib/pkgconfig" ./configure
    —prefix="$HOME/ffmpeg_build" —extra-cflags="-I$HOME/ffmpeg_build/include" —extra-ldflags="-L$HOME/ffmpeg_build/lib" —bindir="$HOME/bin" —pkg-config-flags="—static" —enable-gpl —enable-nonfree —enable-libfdk-aac —enable-libfreetype —enable-libmp3lame —enable-libopus —enable-libvorbis —enable-libvpx —enable-libx264 —enable-libx265

    Can someone let me know who i would do this thanks.

  • Unrecognized options even though compiled FFmpeg on Ubuntu manually

    11 février 2016, par Kathy Lee

    I would like to convert a video from .avi to .mp4 with same quality using ffmpeg but the command I put in the terminal always report some errors saying that there are unrecognized options.

    I have compiled the ffmpeg manually following the steps in http://trac.ffmpeg.org/wiki/CompilationGuide/Ubuntu

    After compiling the ffmpeg, I used the command below the compress the video

    ffmpeg -i input.avi -c:v libx264 -crf 19 -preset slow -c:a libfaac -b:a 192k -ac 2 output.mp4

    But the error message is saying "Unrecognized option ’crf’" :

    ffmpeg version 2.8.5 Copyright (c) 2000-2016 the FFmpeg developers
    
built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04)
    
configuration: --enable-nonfree --enable-pic --enable-shared
    
libavutil      54. 31.100 / 54. 31.100
    
libavcodec     56. 60.100 / 56. 60.100
    
libavformat    56. 40.101 / 56. 40.101
    
libavdevice    56.  4.100 / 56.  4.100
    
libavfilter     5. 40.101 /  5. 40.101
    
libswscale      3.  1.101 /  3.  1.101
    
libswresample   1.  2.101 /  1.  2.101
    
Unrecognized option 'crf'.
    
Error splitting the argument list: Option not found

    Then I tried to omit flag -crf, but I got error saying

    Unrecognized option 'preset'.
    
Error splitting the argument list: Option not found

    Then I omitted flag -preset, it says I do not have libx264....

    [mjpeg @ 0x164f2c0] Changeing bps to 8
    
Input #0, avi, from 'backup_bush.avi':
    
  Duration: 00:01:40.70, start: 0.000000, bitrate: 12409 kb/s
    
    Stream #0:0: Video: mjpeg (MJPG / 0x47504A4D), yuvj420p(pc, bt470bg/unknown/unknown), 400x250 [SAR 1:1 DAR 8:5], 12407 kb/s, 30 fps, 30 tbr, 30 tbn, 30 tbc
    
Unknown encoder 'libx264'

    I am very confused what is going on because I have complied ffmpeg step by step and also installed the dependencies such as libx264 as described in http://trac.ffmpeg.org/wiki/CompilationGuide/Ubuntu. The command I used to configure ffmpeg is

     ./configure   --prefix="$HOME/ffmpeg_build"   --pkg-config-flags="--static"   --extra-cflags="-I$HOME/ffmpeg_build/include"   --extra-ldflags="-L$HOME/ffmpeg_build/lib"   --bindir="$HOME/bin"   --enable-gpl   --enable-libass   --enable-libfdk-aac   --enable-libfreetype   --enable-libmp3lame   --enable-libopus   --enable-libtheora   --enable-libvorbis   --enable-libvpx   --enable-libx264   --enable-nonfree

    Why these errors happen ? How can I fix them to allow me to convert the video from .avi to .mp4 ?

    Thank you very much !

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