Recherche avancée

Médias (1)

Mot : - Tags -/wave

Autres articles (90)

  • Taille des images et des logos définissables

    9 février 2011, par

    Dans beaucoup d’endroits du site, logos et images sont redimensionnées pour correspondre aux emplacements définis par les thèmes. L’ensemble des ces tailles pouvant changer d’un thème à un autre peuvent être définies directement dans le thème et éviter ainsi à l’utilisateur de devoir les configurer manuellement après avoir changé l’apparence de son site.
    Ces tailles d’images sont également disponibles dans la configuration spécifique de MediaSPIP Core. La taille maximale du logo du site en pixels, on permet (...)

  • Participer à sa traduction

    10 avril 2011

    Vous pouvez nous aider à améliorer les locutions utilisées dans le logiciel ou à traduire celui-ci dans n’importe qu’elle nouvelle langue permettant sa diffusion à de nouvelles communautés linguistiques.
    Pour ce faire, on utilise l’interface de traduction de SPIP où l’ensemble des modules de langue de MediaSPIP sont à disposition. ll vous suffit de vous inscrire sur la liste de discussion des traducteurs pour demander plus d’informations.
    Actuellement MediaSPIP n’est disponible qu’en français et (...)

  • Supporting all media types

    13 avril 2011, par

    Unlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)

Sur d’autres sites (11438)

  • FFmpeg audio channel rematrix (5.1 to stereo)

    29 octobre 2014, par Flock Dawson

    I’ve got a (very large !) Apple ProRes 422 file with 16ch audio. To be able to use it on a less powerful computer, I’d like to convert it to a standard MP4 file (h264 video codec, stereo audio). The original file has 16 channels of audio, however, and FFmpeg gives an error when I try to convert it (’Rematrix is needed’). How do I do rematrixing of audio channels ? Are there additional steps needed ?

    This is the FFmpeg command I used :

    ffmpeg -y -i Capture0000.mov -vcodec libx264 -vb 2000k -pix_fmt yuv420p -coder 0 -profile:v baseline -acodec libfaac -ab 128k /tmp/out.mp4

    This is the FFmpeg output :

    ffmpeg version 2.2.git Copyright (c) 2000-2014 the FFmpeg developers
    
      built on May  8 2014 14:17:45 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
    
      configuration: --prefix=/usr/local/ffmpeg_build --extra-cflags=-I/usr/local/ffmpeg_build/include --extra-ldflags=-L/usr/local/ffmpeg_build/lib --bindir=/usr/local/bin --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-x11grab --enable-libxvid --enable-libfaac
    
      libavutil      52. 81.100 / 52. 81.100
    
      libavcodec     55. 60.103 / 55. 60.103
    
      libavformat    55. 37.102 / 55. 37.102
    
      libavdevice    55. 13.101 / 55. 13.101
    
      libavfilter     4.  5.100 /  4.  5.100
    
      libswscale      2.  6.100 /  2.  6.100
    
      libswresample   0. 18.100 /  0. 18.100
    
      libpostproc    52.  3.100 / 52.  3.100
    
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Capture0000.mov':
    
      Metadata:
    
        creation_time   : 2014-08-17 18:30:31
    
      Duration: 01:01:22.52, start: 0.000000, bitrate: 202001 kb/s
    
        Stream #0:0(eng): Video: prores (apch / 0x68637061), yuv422p10le, 1920x1080, 183513 kb/s, SAR 1:1 DAR 16:9, 25 fps, 25 tbr, 2500 tbn, 2500 tbc (default)
    
        Metadata:
    
          creation_time   : 2014-08-17 18:30:31
    
          handler_name    : Apple Alias Data Handler
    
          encoder         : Apple ProRes 422 (HQ)
    
        Stream #0:1(eng): Audio: pcm_s24le (lpcm / 0x6D63706C), 48000 Hz, 16 channels, s32, 18432 kb/s (default)
    
        Metadata:
    
          creation_time   : 2014-08-17 18:30:31
    
          handler_name    : Apple Alias Data Handler
    
    [auto-inserted resampler 0 @ 0x3943da0] [SWR @ 0x39441a0] Rematrix is needed between 16 channels and 5.1 but there is not enough information to do it
    
    [auto-inserted resampler 0 @ 0x3943da0] Failed to configure output pad on auto-inserted resampler 0
    
    Error opening filters!

    This is the FFprobe output :

    ffprobe version 2.2.git Copyright (c) 2007-2014 the FFmpeg developers
    
  built on May  8 2014 14:17:45 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
    
  configuration: --prefix=/usr/local/ffmpeg_build --extra-cflags=-I/usr/local/ffmpeg_build/include --extra-ldflags=-L/usr/local/ffmpeg_build/lib --bindir=/usr/local/bin --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-x11grab --enable-libxvid --enable-libfaac
    
  libavutil      52. 81.100 / 52. 81.100
    
  libavcodec     55. 60.103 / 55. 60.103
    
  libavformat    55. 37.102 / 55. 37.102
    
  libavdevice    55. 13.101 / 55. 13.101
    
  libavfilter     4.  5.100 /  4.  5.100
    
  libswscale      2.  6.100 /  2.  6.100
    
  libswresample   0. 18.100 /  0. 18.100
    
  libpostproc    52.  3.100 / 52.  3.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Capture0000.mov':
    
  Metadata:
    
    creation_time   : 2014-08-17 18:30:31
    
  Duration: 01:01:22.52, start: 0.000000, bitrate: 202001 kb/s
    
    Stream #0:0(eng): Video: prores (apch / 0x68637061), yuv422p10le, 1920x1080, 183513 kb/s, SAR 1:1 DAR 16:9, 25 fps, 25 tbr, 2500 tbn, 2500 tbc (default)
    
    Metadata:
    
      creation_time   : 2014-08-17 18:30:31
    
      handler_name    : Apple Alias Data Handler
    
      encoder         : Apple ProRes 422 (HQ)
    
    Stream #0:1(eng): Audio: pcm_s24le (lpcm / 0x6D63706C), 48000 Hz, 16 channels, s32, 18432 kb/s (default)
    
    Metadata:
    
      creation_time   : 2014-08-17 18:30:31
    
      handler_name    : Apple Alias Data Handler

  • 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.

  • ffmpeg binary in osx archive shows kCMSampleBufferError_RequiredParameterMissing when app runs

    20 mars 2017, par Swati

    I have created an OSX App, bundled ffmpeg binary in it.
    When i debug my code everything works fine and ffmpeg commands execute properly via NSTask.

    However when i create archive and run the app inside the products, ffmpeg commands are not executed and i get error

    1/17/17 3:34:21.951 PM ffmpeg[2229]: [15:34:21.951] CMSampleBufferGetImageBuffer signalled err=-12731 
    
(kCMSampleBufferError_RequiredParameterMissing) (!sbuf) at 
    
/Library/Caches/com.apple.xbs/Sources/CoreMedia_frameworks/CoreMedia-1731.15.206/Sources
    
/Core/FigSampleBuffer/FigSampleBuffer.c line 2394
    

    
  0   CoreMedia 0x00007fff86749713 CMSampleBufferGetImageBuffer + 138
    
  1   ffmpeg    0x00000001002b9714 avdevice_list_output_sinks   + 10116

    Edit :

    I tried the below mentioned way but when I try to run my app on other mac machines the error still persists

    I added Capability "App Sandbox" to my Target. Due to this an entitlements file was added in my project named Target.entitlements

    Inside this Entitlements file 2 values are added viz :

    com.apple.security.inherit >> Boolean >> YES

    App Sandbox >> Boolean >> YES
    I also added a runscript for codesign :

    codesign -f -s "Developer Certificate" --entitlements ./path/Target.entitlements  path/ffmpeg-binary-file

Navigation