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Autres articles (60)

  • Use, discuss, criticize

    13 avril 2011, par

    Talk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
    The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
    A discussion list is available for all exchanges between users.

  • Formulaire personnalisable

    21 juin 2013, par

    Cette page présente les champs disponibles dans le formulaire de publication d’un média et il indique les différents champs qu’on peut ajouter. Formulaire de création d’un Media
    Dans le cas d’un document de type média, les champs proposés par défaut sont : Texte Activer/Désactiver le forum ( on peut désactiver l’invite au commentaire pour chaque article ) Licence Ajout/suppression d’auteurs Tags
    On peut modifier ce formulaire dans la partie :
    Administration > Configuration des masques de formulaire. (...)

  • Les tâches Cron régulières de la ferme

    1er décembre 2010, par

    La gestion de la ferme passe par l’exécution à intervalle régulier de plusieurs tâches répétitives dites Cron.
    Le super Cron (gestion_mutu_super_cron)
    Cette tâche, planifiée chaque minute, a pour simple effet d’appeler le Cron de l’ensemble des instances de la mutualisation régulièrement. Couplée avec un Cron système sur le site central de la mutualisation, cela permet de simplement générer des visites régulières sur les différents sites et éviter que les tâches des sites peu visités soient trop (...)

Sur d’autres sites (10102)

  • ffmpeg convert any file to any file

    28 mai 2015, par Vishnu

    I Want simple command to convert any supported file to any file with little possible video compression.

    for example

    avi to mp4
    
mp4 to 3gp
    
.
    
.etc..

    I tried below code

    ffmpeg -i infile.flv outfile.3gp

    It works for some but for some other like flv to 3gp conversion it throws error like below and also output file size is very large than input.

    "Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height"

    P:s i compiled with below librareis

    ./configure --enable-version3 --enable-libopencore-amrnb --enable-libvo-aacenc --enable-libopencore-amrwb --enable-libvpx --enable-libfaac --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --enable-gpl --enable-postproc --enable-nonfree

    full response

    array(48) {
    
  [0]=>
    
  string(77) "ffmpeg version N-72286-gd9b264b Copyright (c) 2000-2015 the FFmpeg developers"
    
  [1]=>
    
  string(56) "  built with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-11)"
    
  [2]=>
    
  string(261) "  configuration: --enable-version3 --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libvpx --enable-libfaac --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --enable-gpl --enable-postproc --enable-nonfree"
    
  [3]=>
    
  string(40) "  libavutil      54. 23.101 / 54. 23.101"
    
  [4]=>
    
  string(40) "  libavcodec     56. 39.101 / 56. 39.101"
    
  [5]=>
    
  string(40) "  libavformat    56. 33.101 / 56. 33.101"
    
  [6]=>
    
  string(40) "  libavdevice    56.  4.100 / 56.  4.100"
    
  [7]=>
    
  string(40) "  libavfilter     5. 16.101 /  5. 16.101"
    
  [8]=>
    
  string(40) "  libswscale      3.  1.101 /  3.  1.101"
    
  [9]=>
    
  string(40) "  libswresample   1.  1.100 /  1.  1.100"
    
  [10]=>
    
  string(40) "  libpostproc    53.  3.100 / 53.  3.100"
    
  [11]=>
    
  string(32) "Input #0, flv, from 'video.flv':"
    
  [12]=>
    
  string(11) "  Metadata:"
    
  [13]=>
    
  string(25) "    major_brand     : M4V"
    
  [14]=>
    
  string(23) "    minor_version   : 1"
    
  [15]=>
    
  string(39) "    compatible_brands: M4V M4A mp42isom"
    
  [16]=>
    
  string(26) "    date            : 2008"
    
  [17]=>
    
  string(71) "    copyright       : © 2008 Blender Foundation | www.bigbuckbunny.org"
    
  [18]=>
    
  string(36) "    title           : Big Buck Bunny"
    
  [19]=>
    
  string(43) "    artist          : Peach Open Movie Team"
    
  [20]=>
    
  string(56) "    composer        : Sacha Goedegebure / Ton Roosendaal"
    
  [21]=>
    
  string(35) "    encoder         : Lavf55.33.100"
    
  [22]=>
    
  string(59) "  Duration: 00:09:56.58, start: 0.058000, bitrate: 663 kb/s"
    
  [23]=>
    
  string(88) "    Stream #0:0: Video: h264 (High), yuv420p, 640x360, 24.42 fps, 24 tbr, 1k tbn, 48 tbc"
    
  [24]=>
    
  string(61) "    Stream #0:1: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/s"
    
  [25]=>
    
  string(90) "[h263 @ 0x1ef5f60] The specified picture size of 640x360 is not valid for the H.263 codec."
    
  [26]=>
    
  string(77) "Valid sizes are 128x96, 176x144, 352x288, 704x576, and 1408x1152. Try H.263+."
    
  [27]=>
    
  string(33) "Output #0, 3gp, to 'outfile.3gp':"
    
  [28]=>
    
  string(11) "  Metadata:"
    
  [29]=>
    
  string(25) "    major_brand     : M4V"
    
  [30]=>
    
  string(23) "    minor_version   : 1"
    
  [31]=>
    
  string(39) "    compatible_brands: M4V M4A mp42isom"
    
  [32]=>
    
  string(26) "    date            : 2008"
    
  [33]=>
    
  string(71) "    copyright       : © 2008 Blender Foundation | www.bigbuckbunny.org"
    
  [34]=>
    
  string(36) "    title           : Big Buck Bunny"
    
  [35]=>
    
  string(43) "    artist          : Peach Open Movie Team"
    
  [36]=>
    
  string(56) "    composer        : Sacha Goedegebure / Ton Roosendaal"
    
  [37]=>
    
  string(35) "    encoder         : Lavf55.33.100"
    
  [38]=>
    
  string(60) "    Stream #0:0: Video: h263, none, q=2-31, 128 kb/s, 24 fps"
    
  [39]=>
    
  string(13) "    Metadata:"
    
  [40]=>
    
  string(42) "      encoder         : Lavc56.39.101 h263"
    
  [41]=>
    
  string(52) "    Stream #0:1: Audio: amr_nb, 0 channels, 128 kb/s"
    
  [42]=>
    
  string(13) "    Metadata:"
    
  [43]=>
    
  string(55) "      encoder         : Lavc56.39.101 libopencore_amrnb"
    
  [44]=>
    
  string(15) "Stream mapping:"
    
  [45]=>
    
  string(54) "  Stream #0:0 -> #0:0 (h264 (native) -> h263 (native))"
    
  [46]=>
    
  string(66) "  Stream #0:1 -> #0:1 (mp3 (native) -> amr_nb (libopencore_amrnb))"
    
  [47]=>
    
  string(119) "Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height"
    
}

  • dnxhddec : decode and use interlace mb flag

    25 septembre 2015, par Christophe Gisquet
    dnxhddec : decode and use interlace mb flag

    This bit is 1 in some samples, and seems to coincide with interlaced
    
mbs and CID1260. 2008 specs do not know about it, and maintain qscale
    
is 11 bits. This looks oversized, but may help larger bitdepths.
    

    Currently, it leads to an obviously incorrect qscale value, meaning
    
its syntax is shifted by 1. However, reading 11 bits also leads to
    
obviously incorrect decoding : qscale seems to be 10 bits.
    

    However, as most profiles still have 11bits qscale, the feature is
    
restricted to the CID1260 profile.
    

    The encoder writes 12 bits of syntax, last and first bits always 0,
    
which is now somewhat inconsistent with the decoder, but ends up with
    
the same effect (progressive + reserved bit).
    

    Partially fixes ticket #4876.
    

    Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
    • [DH] libavcodec/dnxhddec.c

  • dnxhddec : Decode and use interlace mb flag

    26 septembre 2015, par Christophe Gisquet
    dnxhddec : Decode and use interlace mb flag

    This bit is 1 in some samples, and seems to coincide with interlaced
    
mbs and CID1260. 2008 specs do not know about it, and maintain qscale
    
is 11 bits. This looks oversized, but may help larger bitdepths.
    

    Currently, it leads to an obviously incorrect qscale value, meaning
    
its syntax is shifted by 1. However, reading 11 bits also leads to
    
obviously incorrect decoding : qscale seems to be 10 bits.
    

    However, as most profiles still have 11bits qscale, the feature is
    
restricted to the CID1260 profile (this flag is dependent on
    
a higher-level flag located in the header).
    

    The encoder writes 12 bits of syntax, last and first bits always 0,
    
which is now somewhat inconsistent with the decoder, but ends up with
    
the same effect (progressive + reserved bit).
    

    Signed-off-by : Vittorio Giovara <vittorio.giovara@gmail.com>
    • [DBH] libavcodec/dnxhddec.c

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