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• ffmpeg conversion fails for 640x360 video size

  12 novembre 2015, par user3132858

  Can somebody advice how I can fix the ffmpeg error below :

  Array ( [0] => ffmpeg version 2.0.1 Copyright (c) 2000-2013 the FFmpeg developers 
  
  [1] => built on Nov 11 2015 12:17:12 with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-16) [2] 
  
  => configuration: --enable-gpl --enable-version3 --enable-shared --enable-nonfree 
  
  --enable-postproc --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb 
  
  --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libvpx 
  
  --enable-libx264 --enable-libxvid [3] => libavutil 52. 38.100 / 52. 38.100 [4]
  
  => libavcodec 55. 18.102 / 55. 18.102 [5] => libavformat 55. 12.100 / 55. 12.100 [6] 
  
  => libavdevice 55. 3.100 / 55. 3.100 [7] => libavfilter 3. 79.101 / 3. 79.101 [8] 
  
  => libswscale 2. 3.100 / 2. 3.100 [9] => libswresample 0. 17.102 / 0. 17.102 [10] 
  
  => libpostproc 52. 3.100 / 52. 3.100 [11] => Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '3.mov': [12] 
  
  => Metadata: [13] => major_brand : qt [14] => minor_version : 537199360 [15] => compatible_brands: qt [16] 
  
  => creation_time : 2005-10-17 22:54:32 [17] => Duration: 00:01:25.50, start: 0.000000, 
  
  bitrate: 307 kb/s [18] => Stream #0:0(eng): Video: mpeg4 (Simple Profile) (mp4v / 0x7634706D), 
  
  yuv420p, 640x480 [SAR 1:1 DAR 4:3], 261 kb/s, 10 fps, 10 tbr, 3k tbn, 25 tbc [19] 
  
  => Metadata: [20] => creation_time : 2005-10-17 22:54:33 [21] => handler_name : 
  
  Apple Video Media Handler [22] => Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 
  
  32000 Hz, mono, fltp, 43 kb/s [23] => Metadata: [24] => creation_time : 2005-10-17 22:54:34 [25] 
  
  => handler_name : Apple Sound Media Handler [26] => [libx264 @ 0x19fbb00] using SAR=944/945 [27] 
  
  => [libx264 @ 0x19fbb00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX [28] 
  
  => Output #0, mp4, to '4.mp4': [29] => Metadata: [30] => major_brand : qt [31] 
  
  => minor_version : 537199360 [32] => compatible_brands: qt [33] => Stream #0:0
  
  (eng): Video: h264, yuv420p, 630x472 [SAR 944:945 DAR 4:3], q=-1--1, 900 kb/s, 90k tbn, 
  
  10 tbc [34] => Metadata: [35] => creation_time : 2005-10-17 22:54:33 [36] 
  
  => handler_name : Apple Video Media Handler [37] => Stream #0:1(eng): Audio: aac, 32000 Hz, 
  
  mono, fltp, 128 kb/s [38] => Metadata: [39] => creation_time : 2005-10-17 22:54:34 [40] 
  
  => handler_name : Apple Sound Media Handler [41] => Stream mapping: [42] 
  
  => Stream #0:0 -> #0:0 (mpeg4 -> libx264) [43] => Stream #0:1 -> #0:1 (aac -> aac) [44] 
  
  => Error while opening encoder for output stream #0:0 - maybe incorrect parameters 
  
  such as bit_rate, rate, width or height )

  This is my code :

  $width=640;
  
  $height=360;
  
  $aspect=round($width/$height, 1);
  
  
  
  $command = "/usr/bin/ffmpeg -threads 1 -y -i 3.mov -vf \"scale=min(1\,gt(iw\,".$width.")+gt(ih\,".$height.")) * (gte(a\,".$aspect.")*".$width." + \
  
  lt(a\,".$aspect.")*((".$height."*iw)/ih)) + not(min(1\,gt(iw\,".$width.")+gt(ih\,".$height.")))*iw : \
  
  min(1\,gt(iw\,".$width.")+gt(ih\,".$height.")) * (lte(a\,".$aspect.")*".$height." + \
  
  gt(a\,".$aspect.")*((".$width."*ih)/iw)) + not(min(1\,gt(iw\,".$width.")+gt(ih\,".$height.")))*ih\"  -b:v 900k -acodec aac -strict -2 -ab 96k 4.mp4 ";

  It is rather strange but when I change the width and height parameters to 300 and 200 respectively, the command executes, the error appears when the width x height is 640x360.

  Any ideas of what might be wrong ?

  UPDATE : I am pretty sure the error has got something to do with the audio encoding. If I change the -ab 96k part to -c:a copy, command executes.
  I cannot however use -c:a copy because for some audio formats the video does not play on mobile devices. Therefore i need the audio settings to be fixed and the same for all videos.

• Anomalie #3605 (Fermé) : Le temps s’est arrêté sur ma page d’accueil en Escal avec le passage en 3.1

  24 novembre 2015, par Ysabeau Dutailly

  Bonjour,

  Sur un site avec le squelette Escal dont la page d’accueil comporte des articles à la une : un en "gros" avec photo (dans mes réglages normalement le plus récent), les six autres dans des petits cartouches sans photo, depuis que je suis passée à SPIP 3.1, il semble que le temps se soit arrêté en août 2015 au plus tard. Si j’ai bien les derniers articles dans les cartouches, ce n’est pas le plus récent qui est mis en avant.

  En fait j’avais vu ce changement dès le passage, mais j’ai mis du temps à percuter.

  Après avoir effectué les diverses vidanges préconisées, vérifié les réglages et en avoir conféré avec Jean-Christophe qui fabrique le squelette, il semble que ce soit un bug de SPIP 3.1. Il ne semble pas dépendant du navigateur (bon vérifié uniquement avec Chrome et Firefox mais sur PC, Mac et Linux).

  Une adresse pour vérifier : http://www.aiguilles-magiques.com

  Merci.

• Concatenation of files with different codecs attributes ?

  11 novembre 2015, par Laurence Rosenzweig

  It shows in the ffmpeg documentation the following code example :

  ffmpeg -i input1.mp4 -i input2.webm \ 
  
  -filter_complex "[0:v:0] [0:a:0] [1:v:0] [1:a:0] concat=n=2:v=1:a=1 [v] [a]" \
  
  -map "[v]" -map "[a]" <encoding options="options"> output.mkv
  
  </encoding>

  It says a little below the example : "As you can infer from this example, multiple types of input are supported, and anything readable by ffmpeg should work. The inputs have to be of the same frame size, and a handful of other attributes have to match."

  Does anyone know what attributes need to be the same ? Below are my two files I am trying to merge and I don’t know if it’s even possible given the many differences in attributes despite these files both being of .avi format :

  (Sidenote : file2.avi was looped from an image and I would be open to concatenating a looped image directly to file1.avi as well).

  ffmpeg -i file2.avi
  
  ffmpeg version 2.6.1 Copyright (c) 2000-2015 the FFmpeg developers
  
    built with Apple LLVM version 6.1.0 (clang-602.0.53) (based on LLVM 3.6.0svn)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/2.6.1 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-libx264 --enable-libmp3lame --enable-libvo-aacenc --enable-libxvid --enable-vda
  
    libavutil      54. 20.100 / 54. 20.100
  
    libavcodec     56. 26.100 / 56. 26.100
  
    libavformat    56. 25.101 / 56. 25.101
  
    libavdevice    56.  4.100 / 56.  4.100
  
    libavfilter     5. 11.102 /  5. 11.102
  
    libavresample   2.  1.  0 /  2.  1.  0
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  1.100 /  1.  1.100
  
    libpostproc    53.  3.100 / 53.  3.100
  
  Input #0, avi, from 'file2.avi':
  
    Metadata:
  
      encoder         : Lavf56.25.101
  
    Duration: 00:05:00.09, start: 0.000000, bitrate: 389 kb/s
  
      Stream #0:0: Video: mpeg2video (Main) (mpg2 / 0x3267706D), yuv420p(tv), 1000x700 [SAR 1:1 DAR 10:7], 244 kb/s, 47.95 fps, 23.98 tbr, 47.95 tbn, 47.95 tbc
  
      Stream #0:1: Audio: mp2 (P[0][0][0] / 0x0050), 44100 Hz, stereo, s16p, 128 kb/s
  
  At least one output file must be specified

  file1.avi was converted from a .mts raw video file.

  ffmpeg -i file1.avi
  
  ffmpeg version 2.6.1 Copyright (c) 2000-2015 the FFmpeg developers
  
    built with Apple LLVM version 6.1.0 (clang-602.0.53) (based on LLVM 3.6.0svn)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/2.6.1 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-libx264 --enable-libmp3lame --enable-libvo-aacenc --enable-libxvid --enable-vda
  
    libavutil      54. 20.100 / 54. 20.100
  
    libavcodec     56. 26.100 / 56. 26.100
  
    libavformat    56. 25.101 / 56. 25.101
  
    libavdevice    56.  4.100 / 56.  4.100
  
    libavfilter     5. 11.102 /  5. 11.102
  
    libavresample   2.  1.  0 /  2.  1.  0
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  1.100 /  1.  1.100
  
    libpostproc    53.  3.100 / 53.  3.100
  
  Input #0, avi, from 'file1.avi':
  
    Metadata:
  
      encoder         : Lavf56.25.101
  
    Duration: 00:16:28.06, start: 0.000000, bitrate: 6889 kb/s
  
      Stream #0:0: Video: h264 (High) (H264 / 0x34363248), yuv420p, 1440x1080 [SAR 4:3 DAR 16:9], 6616 kb/s, 59.94 fps, 59.94 tbr, 59.94 tbn, 59.94 tbc
  
      Stream #0:1: Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, stereo, fltp, 256 kb/s
  
  At least one output file must be specified

  Thank you very much for your help !