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  • Gestion générale des documents

    13 mai 2011, par

    MédiaSPIP ne modifie jamais le document original mis en ligne.
    Pour chaque document mis en ligne il effectue deux opérations successives : la création d’une version supplémentaire qui peut être facilement consultée en ligne tout en laissant l’original téléchargeable dans le cas où le document original ne peut être lu dans un navigateur Internet ; la récupération des métadonnées du document original pour illustrer textuellement le fichier ;
    Les tableaux ci-dessous expliquent ce que peut faire MédiaSPIP (...)

  • Des sites réalisés avec MediaSPIP

    2 mai 2011, par

    Cette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
    Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page.

  • MediaSPIP Init et Diogène : types de publications de MediaSPIP

    11 novembre 2010, par

    À l’installation d’un site MediaSPIP, le plugin MediaSPIP Init réalise certaines opérations dont la principale consiste à créer quatre rubriques principales dans le site et de créer cinq templates de formulaire pour Diogène.
    Ces quatre rubriques principales (aussi appelées secteurs) sont : Medias ; Sites ; Editos ; Actualités ;
    Pour chacune de ces rubriques est créé un template de formulaire spécifique éponyme. Pour la rubrique "Medias" un second template "catégorie" est créé permettant d’ajouter (...)

Sur d’autres sites (4281)

  • dashjs can't find initialization segment on manifest.mpd

    30 avril 2016, par Abelardo Mendoza

    I am following this tutorial to stream a WebM. I have no issues running the ffmpeg commands to generate the videos/audio/manifest files but when I try to run it locally, there’s no video or audio at all and dashjs floods the console with :

    Searching for initialization.    
    
Start searching for initialization.     
    
Perform init search: http://localhost:8080/video_1280x720_500k.webm    
    
Perform SIDX load: http://localhost:8080/video_640x360_750k.webm     
    
Perform SIDX load: http://localhost:8080/video_1280x720_500k.webm

    Writing that to console until I stop the server. I have tried using other mpd files such as this, which is used on the dashjs quickstart and it plays the video without any problems.

    I used this guide to install the latest version of ffmpeg on Ubuntu 14.04 LTS :

    ffmpeg version N-79688-g3cb3ddd Copyright (c) 2000-2016 the FFmpeg developers
    
built with gcc 5.3.0 (Ubuntu 5.3.0-3ubuntu1~14.04) 20151204
    
configuration: --prefix=/home/ab/cpp/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/ab/cpp/ffmpeg_build/include --extra-ldflags=-L/home/ab/cpp/ffmpeg/lib --bindir=/home/ab/bin --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-nonfree
    
libavutil      55. 23.100 / 55. 23.100
    
libavcodec     57. 38.100 / 57. 38.100
    
libavformat    57. 34.103 / 57. 34.103
    
libavdevice    57.  0.101 / 57.  0.101
    
libavfilter     6. 44.100 /  6. 44.100
    
libswscale      4.  1.100 /  4.  1.100
    
libswresample   2.  0.101 /  2.  0.101
    
libpostproc    54.  0.100 / 54.  0.100

    When running on ffmpeg :

    ffmpeg \
    
 -f webm_dash_manifest -i video_160x90_250k.webm \
    
 -f webm_dash_manifest -i video_320x180_500k.webm \
    
 -f webm_dash_manifest -i video_640x360_750k.webm \
    
 -f webm_dash_manifest -i video_640x360_1000k.webm \
    
 -f webm_dash_manifest -i video_1280x720_500k.webm \
    
 -f webm_dash_manifest -i audio_128k.webm \
    
 -c copy -map 0 -map 1 -map 2 -map 3 -map 4 -map 5 \
    
 -f webm_dash_manifest \
    
 -adaptation_sets "id=0,streams=0,1,2,3,4 id=1,streams=5" \
    
 manifest.mpd

    It generates the following manifest.mpd :

    <?xml version="1.0" encoding="UTF-8"?>
    
<mpd xmlns="urn:mpeg:DASH:schema:MPD:2011" type="static" mediapresentationduration="PT117.726S" minbuffertime="PT1S" profiles="urn:webm:dash:profile:webm-on-demand:2012">
    
  <period start="PT0S" duration="PT117.726S">
    
    <adaptationset mimetype="video/webm" codecs="vp9" lang="eng" bitstreamswitching="true" subsegmentalignment="true" subsegmentstartswithsap="1">
    
      <representation bandwidth="198155" width="160" height="90">
    
        <baseurl>video_160x90_250k.webm</baseurl>
    
        <segmentbase indexrange="2007834-2008211">
    
          <initialization range="0-437"></initialization>
    
        </segmentbase>
    
      </representation>
    
      <representation bandwidth="459264" width="320" height="180">
    
        <baseurl>video_320x180_500k.webm</baseurl>
    
        <segmentbase indexrange="4459996-4460374">
    
          <initialization range="0-439"></initialization>
    
        </segmentbase>
    
      </representation>
    
      <representation bandwidth="718495" width="640" height="360">
    
        <baseurl>video_640x360_750k.webm</baseurl>
    
        <segmentbase indexrange="6614036-6614414">
    
          <initialization range="0-441"></initialization>
    
        </segmentbase>
    
      </representation>
    
      <representation bandwidth="931445" width="640" height="360">
    
        <baseurl>video_640x360_1000k.webm</baseurl>
    
        <segmentbase indexrange="8309082-8309460">
    
          <initialization range="0-441"></initialization>
    
        </segmentbase>
    
      </representation>
    
      <representation bandwidth="821274" width="1280" height="720">
    
        <baseurl>video_1280x720_500k.webm</baseurl>
    
        <segmentbase indexrange="8728812-8729190">
    
          <initialization range="0-441"></initialization>
    
        </segmentbase>
    
      </representation>
    
    </adaptationset>
    
    <adaptationset mimetype="audio/webm" codecs="vorbis" lang="eng" audiosamplingrate="44100" bitstreamswitching="true" subsegmentalignment="true" subsegmentstartswithsap="1">
    
      <representation bandwidth="107104">
    
        <baseurl>audio_128k.webm</baseurl>
    
        <segmentbase indexrange="1538710-1539184">
    
          <initialization range="0-4112"></initialization>
    
        </segmentbase>
    
      </representation>
    
    </adaptationset>
    
  </period>
    
</mpd>

    The index.html has a few changes because dash.js changed the way the player gets initialized.

        
    
        
    
        
    
        <code class="echappe-js">&lt;script src=&quot;http://cdn.dashjs.org/latest/dash.all.debug.js&quot;&gt;&lt;/script&gt;

    And here is Chromium’s log file. I’m converting this webm from this site.

    If I missed out any other relevant information or if anyone can guide me into the right direction, please let me know.

    Edit :

    Like Will Law mentioned, using the Shaka Player worked without any issues with my current manifest. Hope this helps anyone else.

  • Anomalie #2776 : sélecteur de rubrique

    24 décembre 2017, par b b

    Tu peux fournir un schéma de ce que ça donnerait pour qu’on avance là dessus ?

  • Adding some kind of subtitle to an mp4 with ffmpeg

    23 juin 2017, par Steven Van Ingelgem

    I have a subtitle (it certainly looks like it), but I don’t know how to add it into an MP4 I’m creating.
    First a hexdump of the subtitle :

    00000000  00 00 00 18 66 74 79 70  69 73 6f 36 00 00 00 00  |....ftypiso6....|
    
00000010  69 73 6f 36 64 61 73 68  00 00 00 28 66 72 65 65  |iso6dash...(free|
    
00000020  55 53 50 20 62 79 20 43  6f 64 65 53 68 6f 70 11  |USP by CodeShop.|
    
00000030  11 11 11 11 11 11 11 11  11 11 11 11 11 11 11 11  |................|
    
00000040  00 00 02 1d 6d 6f 6f 76  00 00 00 6c 6d 76 68 64  |....moov...lmvhd|
    
00000050  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 01  |................|
    
00000060  00 00 00 00 00 01 00 00  01 00 00 00 00 00 00 00  |................|
    
00000070  00 00 00 00 00 01 00 00  00 00 00 00 00 00 00 00  |................|
    
*
    
00000090  00 00 00 00 40 00 00 00  00 00 00 00 00 00 00 00  |....@...........|
    
000000a0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
    
000000b0  00 00 00 02 00 00 01 81  74 72 61 6b 00 00 00 5c  |........trak...\|
    
000000c0  74 6b 68 64 00 00 00 07  00 00 00 00 00 00 00 00  |tkhd............|
    
000000d0  00 00 00 01 00 00 00 00  00 00 00 00 00 00 00 00  |................|
    
000000e0  00 00 00 00 00 00 00 00  00 00 00 00 00 01 00 00  |................|
    
*
    
00000100  00 00 00 00 00 00 00 00  00 00 00 00 40 00 00 00  |............@...|
    
00000110  00 00 00 00 00 00 00 00  00 00 01 1d 6d 64 69 61  |............mdia|
    
00000120  00 00 00 20 6d 64 68 64  00 00 00 00 00 00 00 00  |... mdhd........|
    
00000130  00 00 00 00 00 00 03 e8  00 00 00 00 39 84 00 00  |............9...|
    
00000140  00 00 00 35 68 64 6c 72  00 00 00 00 00 00 00 00  |...5hdlr........|
    
00000150  73 75 62 74 00 00 00 00  00 00 00 00 00 00 00 00  |subt............|
    
00000160  55 53 50 20 53 75 62 74  69 74 6c 65 20 48 61 6e  |USP Subtitle Han|
    
00000170  64 6c 65 72 00 00 00 00  c0 6d 69 6e 66 00 00 00  |dler.....minf...|
    
00000180  0c 73 74 68 64 00 00 00  00 00 00 00 24 64 69 6e  |.sthd.......$din|
    
00000190  66 00 00 00 1c 64 72 65  66 00 00 00 00 00 00 00  |f....dref.......|
    
000001a0  01 00 00 00 0c 75 72 6c  20 00 00 00 01 00 00 00  |.....url .......|
    
000001b0  88 73 74 62 6c 00 00 00  3c 73 74 73 64 00 00 00  |.stbl.../www.|
    
000001e0  77 33 2e 6f 72 67 2f 6e  73 2f 74 74 6d 6c 00 00  |w3.org/ns/ttml..|
    
000001f0  00 00 00 00 10 73 74 74  73 00 00 00 00 00 00 00  |.....stts.......|
    
00000200  00 00 00 00 10 73 74 73  63 00 00 00 00 00 00 00  |.....stsc.......|
    
00000210  00 00 00 00 14 73 74 73  7a 00 00 00 00 00 00 00  |.....stsz.......|
    
00000220  00 00 00 00 00 00 00 00  10 73 74 63 6f 00 00 00  |.........stco...|
    
00000230  00 00 00 00 00 00 00 00  28 6d 76 65 78 00 00 00  |........(mvex...|
    
00000240  20 74 72 65 78 00 00 00  00 00 00 00 01 00 00 00  | trex...........|
    
00000250  01 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
    
00000260  18 73 74 79 70 69 73 6f  36 00 00 00 00 69 73 6f  |.stypiso6....iso|
    
00000270  36 6d 73 64 68 00 00 00  28 66 72 65 65 55 53 50  |6msdh...(freeUSP|
    
00000280  20 62 79 20 43 6f 64 65  53 68 6f 70 11 11 11 11  | by CodeShop....|
    
00000290  11 11 11 11 11 11 11 11  11 11 11 11 11 00 00 00  |................|
    
000002a0  2c 73 69 64 78 00 00 00  00 00 00 00 01 00 00 03  |,sidx...........|
    
000002b0  e8 00 00 00 00 00 00 00  00 00 00 00 01 00 00 0f  |................|
    
000002c0  09 00 00 ea 60 90 00 00  00 00 00 00 68 6d 6f 6f  |....`.......hmoo|
    
000002d0  66 00 00 00 10 6d 66 68  64 00 00 00 00 00 00 00  |f....mfhd.......|
    
000002e0  01 00 00 00 50 74 72 61  66 00 00 00 14 74 66 68  |....Ptraf....tfh|
    
000002f0  64 00 02 00 02 00 00 00  01 00 00 00 01 00 00 00  |d...............|
    
00000300  14 74 66 64 74 01 00 00  00 00 00 00 00 00 00 00  |.tfdt...........|
    
00000310  00 00 00 00 20 74 72 75  6e 00 00 07 01 00 00 00  |.... trun.......|
    
00000320  01 00 00 00 70 00 00 ea  60 00 00 0e 99 02 80 00  |....p...`.......|
    
00000330  40 00 00 0e a1 6d 64 61  74 3c 3f 78 6d 6c 20 76  |@....mdat&lt;?xml v|
    
00000340  65 72 73 69 6f 6e 3d 22  31 2e 30 22 20 65 6e 63  |ersion="1.0" enc|
    
00000350  6f 64 69 6e 67 3d 22 75  74 66 2d 38 22 3f 3e 3c  |oding="utf-8"?>&lt;|
    
00000360  74 74 20 78 6d 6c 6e 73  3d 22 68 74 74 70 3a 2f  |tt xmlns="http:/|
    
00000370  2f 77 77 77 2e 77 33 2e  6f 72 67 2f 6e 73 2f 74  |/www.w3.org/ns/t|
    
00000380  74 6d 6c 22 20 78 6d 6c  6e 73 3a 73 6d 70 74 65  |tml" xmlns:smpte|
    
00000390  3d 22 68 74 74 70 3a 2f  2f 77 77 77 2e 73 6d 70  |="http://www.smp|
    
000003a0  74 65 2d 72 61 2e 6f 72  67 2f 73 63 68 65 6d 61  |te-ra.org/schema|
    
000003b0  73 2f 32 30 35 32 2d 31  2f 32 30 31 30 2f 73 6d  |s/2052-1/2010/sm|

    I honestly have never seen anything like this before...

    So the command I’m running now is this :

    ffmpeg -y -i ’audionld#24000.mp4’ -i ’audionld#48000.mp4’ -i
    ’textnld.mp4’ -i ’video.mp4’ -map 0:a -map 1:a -map 2:d -map 3:v
    -metadata:s:a:0 language=nld -metadata:s:a:1 language=nld -acodec copy -bsf:a aac_adtstoasc -vcodec copy -c:d copy -movflags faststart "test.mp4" 2>&1

    Which results in this output :

    ffmpeg version 3.2.5-1~bpo8+1 Copyright (c) 2000-2017 the FFmpeg developers
    
  built with gcc 4.9.2 (Debian 4.9.2-10)
    
  configuration: --prefix=/usr --extra-version='1~bpo8+1' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --disable-libebur128 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
    
  libavutil      55. 34.101 / 55. 34.101
    
  libavcodec     57. 64.101 / 57. 64.101
    
  libavformat    57. 56.101 / 57. 56.101
    
  libavdevice    57.  1.100 / 57.  1.100
    
  libavfilter     6. 65.100 /  6. 65.100
    
  libavresample   3.  1.  0 /  3.  1.  0
    
  libswscale      4.  2.100 /  4.  2.100
    
  libswresample   2.  3.100 /  2.  3.100
    
  libpostproc    54.  1.100 / 54.  1.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'audionld#24000.mp4':
    
  Metadata:
    
    major_brand     : iso6
    
    minor_version   : 0
    
    compatible_brands: iso6dash
    
  Duration: 00:03:06.07, start: 0.000000, bitrate: 64 kb/s
    
    Stream #0:0(nld): Audio: aac (HE-AAC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 62 kb/s (default)
    
    Metadata:
    
      handler_name    : USP Sound Handler
    
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'audionld#48000.mp4':
    
  Metadata:
    
    major_brand     : iso6
    
    minor_version   : 0
    
    compatible_brands: iso6dash
    
  Duration: 00:03:06.07, start: 0.000000, bitrate: 95 kb/s
    
    Stream #1:0(nld): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 93 kb/s (default)
    
    Metadata:
    
      handler_name    : USP Sound Handler
    
Input #2, mov,mp4,m4a,3gp,3g2,mj2, from 'textnld.mp4':
    
  Metadata:
    
    major_brand     : iso6
    
    minor_version   : 0
    
    compatible_brands: iso6dash
    
  Duration: 00:03:05.76, bitrate: 0 kb/s
    
    Stream #2:0(nld): Data: none (stpp / 0x70707473), 0 kb/s (default)
    
    Metadata:
    
      handler_name    : USP Subtitle Handler
    
Input #3, mov,mp4,m4a,3gp,3g2,mj2, from 'video.mp4':
    
  Metadata:
    
    major_brand     : iso6
    
    minor_version   : 0
    
    compatible_brands: iso6dash
    
  Duration: 00:03:06.08, start: 0.000000, bitrate: 152 kb/s
    
    Stream #3:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 416x234 [SAR 1:1 DAR 16:9], 144 kb/s, 25 fps, 25 tbr, 25k tbn, 50 tbc (default)
    
    Metadata:
    
      handler_name    : USP Video Handler
    
      encoder         : Elemental H.264
    
[mp4 @ 0x7f15299c4520] Could not find tag for codec none in stream #2, codec not currently supported in container
    
Could not write header for output file #0 (incorrect codec parameters ?): Invalid argumentStream mapping:
    
  Stream #0:0 -> #0:0 (copy)
    
  Stream #1:0 -> #0:1 (copy)
    
  Stream #2:0 -> #0:2 (copy)
    
  Stream #3:0 -> #0:3 (copy)
    
    Last message repeated 1 times

    This gives the error :
    Could not find tag for codec none in stream #2, codec not currently supported in container
    Could not write header for output file #0 (incorrect codec parameters ?) : Invalid argument

    So I tried playing with the map like this :

    -map 2:s
    ==> Gives me :
    Stream map ’2:s’ matches no streams.
    To ignore this, add a trailing ’ ?’ to the map.

    -map 2:s ?
    ==> Gives me no error, but the subtitle stream isn’t added into the final file.

    Stream mapping:
    
  Stream #0:0 -> #0:0 (copy)
    
  Stream #1:0 -> #0:1 (copy)
    
  Stream #3:0 -> #0:2 (copy)

    Maybe I first have to convert the subtitle into srt or such, but for that I don’t find on google what type of file this is.

    Any help would be greatly appreciated !

    Thanks

    ---EDIT---

    Hereby the code that I am using to convert this in PHP :

      private function convert_TTML_subtitle_file($orig) {
    
    if ( $orig == '' || !file_exists($orig) ) {
    
      return false;
    
    }
    

    
    $f = file_get_contents($orig);
    
    $pos = stripos($f, '<tt xmlns="http://www.w3.org/ns/ttml" if="if" false="false" return="return" while="while">body->div->p as $p ) {
    
          $txt .= "{$counter}\r\n";
    
          $counter++;
    
          $txt .= $p['begin'] . ' --> ' . $p['end'] . "\r\n";
    
          $txt .= $p->span . "\r\n\r\n";
    
        }
    
      }
    
      $cur += $curSize;
    
    }
    

    
    $fname = tempnam(getcwd(), 'sub');
    
    file_put_contents($fname, $txt);
    
    return $fname;
    
  }
    
</tt>

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