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Autres articles (24)

  • 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 (...)

  • Personnaliser les catégories

    21 juin 2013, par

    Formulaire de création d’une catégorie
    Pour ceux qui connaissent bien SPIP, une catégorie peut être assimilée à une rubrique.
    Dans le cas d’un document de type catégorie, les champs proposés par défaut sont : Texte
    On peut modifier ce formulaire dans la partie :
    Administration > Configuration des masques de formulaire.
    Dans le cas d’un document de type média, les champs non affichés par défaut sont : Descriptif rapide
    Par ailleurs, c’est dans cette partie configuration qu’on peut indiquer le (...)

  • 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 (...)

Sur d’autres sites (6037)

  • Merge commit ’9d5fed6dc4cccb0689f694112f5026988bebc472’

    9 octobre 2014, par Michael Niedermayer
    Merge commit ’9d5fed6dc4cccb0689f694112f5026988bebc472’

    * commit ’9d5fed6dc4cccb0689f694112f5026988bebc472’ :
    
  avcodec : fix descriptions on color transfer options
    

    Merged-by : Michael Niedermayer <michaelni@gmx.at>
    • [DH] libavcodec/options_table.h

  • ffmpeg Format settings, Matrix bt709

    22 mars 2023, par user1722669

    Does anyone know how I can achieve the following color space (bt.709) via FFmpeg ?
    &#xA;Here is what I have now in my files...

    &#xA;&#xA;

    enter image description here

    &#xA;&#xA;

    As you can see there is Format settings, Matrix as default, how can I set it like this :

    &#xA;&#xA;

      &#xA;
    • Format settings (Matrix) : Custom or Standard

      • &#xA;

    • Component Color primaries : BT.709

      • &#xA;

    • Transfer characteristics : BT.709

      • &#xA;

    • Matrix coefficients : BT.709

      • &#xA;

    &#xA;&#xA;

    Thank you

    &#xA;

  • ffmpeg : trsfer a h264 video to a series of jpg failed

    21 juin 2018, par 徐立派

    me and a partner are trying to transfer a h264 video to a series of images using ffmpeg with the following command line :

    ffmpeg -i input.h264 -qscale:v 2 output_%03d.jpg

    The input.h264 can be played perfectly on vlc, but the images generated by ffmpeg are just all black. The message in the console are below :

    ffmpeg version 3.4.2-2 Copyright (c) 2000-2018 the FFmpeg developers
    
  built with gcc 7 (Ubuntu 7.3.0-16ubuntu2)
    
  configuration: --prefix=/usr --extra-version=2 --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 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --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-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
    
  libavutil      55. 78.100 / 55. 78.100
    
  libavcodec     57.107.100 / 57.107.100
    
  libavformat    57. 83.100 / 57. 83.100
    
  libavdevice    57. 10.100 / 57. 10.100
    
  libavfilter     6.107.100 /  6.107.100
    
  libavresample   3.  7.  0 /  3.  7.  0
    
  libswscale      4.  8.100 /  4.  8.100
    
  libswresample   2.  9.100 /  2.  9.100
    
  libpostproc    54.  7.100 / 54.  7.100
    
[h264 @ 0x562ab2afd9e0] error while decoding MB 54 2, bytestream -16
    
[h264 @ 0x562ab2afd9e0] top block unavailable for requested intra mode -1
    
[h264 @ 0x562ab2afd9e0] error while decoding MB 2 9, bytestream 6907
    
[h264 @ 0x562ab2afd9e0] concealing 1275 DC, 1275 AC, 1275 MV errors in P frame
    
[h264 @ 0x562ab2afd9e0] top block unavailable for requested intra mode -1
    
[h264 @ 0x562ab2afd9e0] error while decoding MB 27 0, bytestream 5564
    
[h264 @ 0x562ab2afd9e0] deblocking filter parameters 7 13 out of range
    
[h264 @ 0x562ab2afd9e0] decode_slice_header error
    
[h264 @ 0x562ab2afd9e0] concealing 1440 DC, 1440 AC, 1440 MV errors in P frame
    
[h264 @ 0x562ab2afd9e0] deblocking filter parameters 7 -14 out of range
    
[h264 @ 0x562ab2afd9e0] decode_slice_header error
    
[h264 @ 0x562ab2afd9e0] concealing 1387 DC, 1387 AC, 1387 MV errors in P frame
    
[h264 @ 0x562ab2afd9e0] deblocking filter parameters -7 0 out of range
    
[h264 @ 0x562ab2afd9e0] decode_slice_header error
    
[h264 @ 0x562ab2afd9e0] concealing 1413 DC, 1413 AC, 1413 MV errors in P frame
    
[h264 @ 0x562ab2afd9e0] top block unavailable for requested intra mode -1
    
[h264 @ 0x562ab2afd9e0] error while decoding MB 9 0, bytestream 6647
    
[h264 @ 0x562ab2afd9e0] concealing 1186 DC, 1186 AC, 1186 MV errors in P frame
    
[h264 @ 0x562ab2afd9e0] top block unavailable for requested intra mode
    
[h264 @ 0x562ab2afd9e0] error while decoding MB 16 9, bytestream 6182
    
[h264 @ 0x562ab2afd9e0] top block unavailable for requested intra mode -1
    
[h264 @ 0x562ab2afd9e0] error while decoding MB 6 18, bytestream 7043
    
[h264 @ 0x562ab2afd9e0] concealing 1440 DC, 1440 AC, 1440 MV errors in P frame
    
[h264 @ 0x562ab2afc8c0] Stream #0: not enough frames to estimate rate; consider increasing probesize
    
Input #0, h264, from 'temp_file.h264':
    
  Duration: N/A, bitrate: N/A
    
    Stream #0:0: Video: h264 (High), yuvj420p(pc, progressive), 1280x720, 29.97 fps, 29.97 tbr, 1200k tbn, 59.94 tbc
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> mjpeg (native))
    
Press [q] to stop, [?] for help
    
[h264 @ 0x562ab2b2f900] error while decoding MB 54 2, bytestream -16
    
[h264 @ 0x562ab2b2f900] top block unavailable for requested intra mode -1
    
[h264 @ 0x562ab2b2f900] error while decoding MB 2 9, bytestream 6907
    
[h264 @ 0x562ab2b2f900] concealing 1275 DC, 1275 AC, 1275 MV errors in P frame
    
[h264 @ 0x562ab2b01080] top block unavailable for requested intra mode -1
    
[h264 @ 0x562ab2b01080] error while decoding MB 27 0, bytestream 5564
    
[h264 @ 0x562ab2b01080] deblocking filter parameters 7 13 out of range
    
[h264 @ 0x562ab2b01080] decode_slice_header error
    
[h264 @ 0x562ab2b01080] concealing 1440 DC, 1440 AC, 1440 MV errors in P frame
    
[h264 @ 0x562ab2c49240] deblocking filter parameters 7 -14 out of range
    
[h264 @ 0x562ab2c49240] decode_slice_header error
    
[h264 @ 0x562ab2c49240] concealing 1387 DC, 1387 AC, 1387 MV errors in P frame
    
Output #0, image2, to 'output_%03d.jpg':
    
  Metadata:
    
    encoder         : Lavf57.83.100
    
    Stream #0:0: Video: mjpeg, yuvj420p(pc), 1280x720, q=2-31, 200 kb/s, 29.97 fps, 29.97 tbn, 29.97 tbc
    
    Metadata:
    
      encoder         : Lavc57.107.100 mjpeg
    
    Side data:
    
      cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
    
[h264 @ 0x562ab2b7fec0] deblocking filter parameters -7 0 out of range
    
[h264 @ 0x562ab2b7fec0] decode_slice_header error
    
[h264 @ 0x562ab2b7fec0] concealing 1413 DC, 1413 AC, 1413 MV errors in P frame
    
[h264 @ 0x562ab2c15240] top block unavailable for requested intra mode -1
    
[h264 @ 0x562ab2c15240] error while decoding MB 9 0, bytestream 6647
    
[h264 @ 0x562ab2c15240] concealing 1186 DC, 1186 AC, 1186 MV errors in P frame
    
[h264 @ 0x562ab2c315a0] top block unavailable for requested intra mode
    
[h264 @ 0x562ab2c315a0] error while decoding MB 16 9, bytestream 6182
    
[h264 @ 0x562ab2c315a0] top block unavailable for requested intra mode -1
    
[h264 @ 0x562ab2c315a0] error while decoding MB 6 18, bytestream 7043
    
[h264 @ 0x562ab2c315a0] concealing 1440 DC, 1440 AC, 1440 MV errors in P frame
    
[h264 @ 0x562ab2c447a0] top block unavailable for requested intra mode -1
    
[h264 @ 0x562ab2c447a0] error while decoding MB 12 9, bytestream 6863
    
[h264 @ 0x562ab2c447a0] concealing 1342 DC, 1342 AC, 1342 MV errors in P frame
    
[h264 @ 0x562ab2bb9180] top block unavailable for requested intra mode
    
[h264 @ 0x562ab2bb9180] error while decoding MB 29 18, bytestream 6611
    
[h264 @ 0x562ab2bb9180] concealing 1405 DC, 1405 AC, 1405 MV errors in P frame
    
[h264 @ 0x562ab2bd54e0] top block unavailable for requested intra mode
    
[h264 @ 0x562ab2bd54e0] error while decoding MB 25 9, bytestream 6051
    
[h264 @ 0x562ab2bd54e0] top block unavailable for requested intra mode -1
    
[h264 @ 0x562ab2bd54e0] error while decoding MB 70 18, bytestream 5088
    
[h264 @ 0x562ab2bd54e0] concealing 1419 DC, 1419 AC, 1419 MV errors in P frame
    
[h264 @ 0x562ab2bf1840] top block unavailable for requested intra mode
    
[h264 @ 0x562ab2bf1840] error while decoding MB 14 9, bytestream 6071
    
[h264 @ 0x562ab2bf1840] deblocking filter parameters -9 0 out of range
    
[h264 @ 0x562ab2bf1840] decode_slice_header error
    
[h264 @ 0x562ab2bf1840] concealing 1440 DC, 1440 AC, 1440 MV errors in P frame
    
[h264 @ 0x562ab318e0a0] top block unavailable for requested intra mode -1
    
[h264 @ 0x562ab318e0a0] error while decoding MB 54 9, bytestream 4422
    
[h264 @ 0x562ab318e0a0] concealing 1256 DC, 1256 AC, 1256 MV errors in P frame
    
[h264 @ 0x562ab31aa020] top block unavailable for requested intra mode -1
    
[h264 @ 0x562ab31aa020] error while decoding MB 22 9, bytestream 5862
    
[h264 @ 0x562ab31aa020] concealing 1335 DC, 1335 AC, 1335 MV errors in P frame
    
[h264 @ 0x562ab2d5a8c0] deblocking filter parameters 7 -4 out of range
    
[h264 @ 0x562ab2d5a8c0] decode_slice_header error
    
[h264 @ 0x562ab2d5a8c0] concealing 1430 DC, 1430 AC, 1430 MV errors in P frame
    
[h264 @ 0x562ab2b2f900] concealing 1319 DC, 1319 AC, 1319 MV errors in P frame
    
[h264 @ 0x562ab2b01080] top block unavailable for requested intra mode -1
    
[h264 @ 0x562ab2b01080] error while decoding MB 16 9, bytestream 6218
    
[h264 @ 0x562ab2b01080] concealing 1416 DC, 1416 AC, 1416 MV errors in P frame
    
[h264 @ 0x562ab2c49240] top block unavailable for requested intra mode -1
    
[h264 @ 0x562ab2c49240] error while decoding MB 12 0, bytestream 6854
    
[h264 @ 0x562ab2c49240] top block unavailable for requested intra mode -1
    
[h264 @ 0x562ab2c49240] error while decoding MB 2 9, bytestream 7092
    
[h264 @ 0x562ab2c49240] concealing 1440 DC, 1440 AC, 1440 MV errors in P frame
    
[h264 @ 0x562ab2b7fec0] top block unavailable for requested intra mode -1
    
[h264 @ 0x562ab2b7fec0] error while decoding MB 59 0, bytestream 4955
    
[h264 @ 0x562ab2b7fec0] deblocking filter parameters 7 15 out of range
    
[h264 @ 0x562ab2b7fec0] decode_slice_header error
    
[h264 @ 0x562ab2b7fec0] concealing 1430 DC, 1430 AC, 1430 MV errors in P frame
    
[h264 @ 0x562ab2c15240] top block unavailable for requested intra mode -1
    
[h264 @ 0x562ab2c15240] error while decoding MB 34 0, bytestream 5338
    
[h264 @ 0x562ab2c15240] deblocking filter parameters 7 13 out of range
    
[h264 @ 0x562ab2c15240] decode_slice_header error
    
[h264 @ 0x562ab2c15240] concealing 1440 DC, 1440 AC, 1440 MV errors in P frame
    
[h264 @ 0x562ab2c315a0] concealing 1344 DC, 1344 AC, 1344 MV errors in P frame
    
[h264 @ 0x562ab2c447a0] top block unavailable for requested intra mode -1
    
[h264 @ 0x562ab2c447a0] error while decoding MB 49 9, bytestream 4992
    
[h264 @ 0x562ab2c447a0] concealing 1228 DC, 1228 AC, 1228 MV errors in P frame
    
frame=   21 fps=0.0 q=2.0 Lsize=N/A time=00:00:00.70 bitrate=N/A speed=1.31x    
    
video:601kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown

    However, this command works perfectly fine on random h264 videoes on the internet, so I guess there may be something wrong with our h264 video, but the weird thing is that it can be played by vlc player just fine...

    Any idea what the problem can be ? Any help will be appreciated !

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