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Autres articles (69)

  • List of compatible distributions

    26 avril 2011, par

    The table below is the list of Linux distributions compatible with the automated installation script of MediaSPIP. Distribution nameVersion nameVersion number Debian Squeeze 6.x.x Debian Weezy 7.x.x Debian Jessie 8.x.x Ubuntu The Precise Pangolin 12.04 LTS Ubuntu The Trusty Tahr 14.04
    If you want to help us improve this list, you can provide us access to a machine whose distribution is not mentioned above or send the necessary fixes to add (...)

  • Problèmes fréquents

    10 mars 2010, par

    PHP et safe_mode activé
    Une des principales sources de problèmes relève de la configuration de PHP et notamment de l’activation du safe_mode
    La solution consiterait à soit désactiver le safe_mode soit placer le script dans un répertoire accessible par apache pour le site

  • Encodage et transformation en formats lisibles sur Internet

    10 avril 2011

    MediaSPIP transforme et ré-encode les documents mis en ligne afin de les rendre lisibles sur Internet et automatiquement utilisables sans intervention du créateur de contenu.
    Les vidéos sont automatiquement encodées dans les formats supportés par HTML5 : MP4, Ogv et WebM. La version "MP4" est également utilisée pour le lecteur flash de secours nécessaire aux anciens navigateurs.
    Les documents audios sont également ré-encodés dans les deux formats utilisables par HTML5 :MP3 et Ogg. La version "MP3" (...)

Sur d’autres sites (8635)

  • what parameters for SD ?

    6 janvier 2015, par SledgehammerPL

    I have this :

    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'film.mp4':
    
  Metadata:
    
    major_brand     : mp42
    
    minor_version   : 0
    
    compatible_brands: mp42mp41
    
    creation_time   : 2013-07-09 17:41:04
    
  Duration: 00:00:15.04, start: 0.000000, bitrate: 6132 kb/s
    
    Stream #0.0(eng): Video: h264 (Main), yuv420p, 1280x720 [PAR 1:1 DAR 16:9],                                                               5951 kb/s, 25 fps, 25 tbr, 25k tbn, 50 tbc
    
    Metadata:
    
      creation_time   : 2013-07-09 17:41:04
    
    Stream #0.1(eng): Audio: aac, 48000 Hz, stereo, s16, 189 kb/s
    
    Metadata:
    
      creation_time   : 2013-07-09 17:41:04

    and want to down quality to standard PAL - how to do with ffmpeg/avconv ?

  • FFmpeg returning an error - What does it mean ?

    19 mars 2013, par user1031947

    I am using FFmpeg, libmp3lame & libx264 along with the node fluent-ffmpeg module. This is my first foray into processing uploaded videos.

    From node, I use the following code to process an uploaded video :

    var proc = new ffmpeg({ source: src, nolog: true })
    
    .usingPreset( "podcast" )
    
    .withAudioCodec( "libmp3lame" )
    
    .saveToFile( dest, function( retcode, err ){
    
         if( err ) throw err;
    
         ...
    
    });

    When I try to process a video, this fails with the following error, which I don't understand. I am hoping someone here can help point me in the right direction. Thanks !

    > ffmpeg version 0.8.5-6:0.8.5-1, Copyright (c) 2000-2012 the Libav
    
> developers   built on Jan 13 2013 12:05:48 with gcc 4.7.2
    
> *** THIS PROGRAM IS DEPRECATED *** This program is only provided for compatibility and will be removed in a future release. Please use
    
> avconv instead.
    
> 
    
> Seems stream 0 codec frame rate differs from container frame rate:
    
> 5994.00 (5994/1) -> 29.97 (2997/100) Input #0, mov,mp4,m4a,3gp,3g2,mj2, from
    
> '/home/ssp/resources/tmp/32111bf4217e87c23328ec81c56c7d02':  
    
> Metadata:
    
>     major_brand     : M4VP
    
>     minor_version   : 1
    
>     compatible_brands: M4VPM4A mp42isom
    
>     creation_time   : 2008-08-26 17:28:47   Duration: 00:00:08.01, start: 0.000000, bitrate: 944 kb/s
    
>     Stream #0.0(eng): Video: h264 (Constrained Baseline), yuv420p, 480x272, 815 kb/s, 29.97 fps, 29.97 tbr, 2997 tbn, 5994 tbc
    
>     Metadata:
    
>       creation_time   : 2008-08-26 17:28:47
    
>     Stream #0.1(eng): Audio: aac, 44100 Hz, stereo, s16, 124 kb/s
    
>     Metadata:
    
>       creation_time   : 2008-08-26 17:28:47 [buffer @ 0xb685a0] w:480 h:272 pixfmt:yuv420p [scale @ 0xb63280] w:480 h:272 fmt:yuv420p ->
    
> w:320 h:176 fmt:yuv420p flags:0x4 [libx264 @ 0xb67c20] VBV maxrate
    
> unspecified, assuming CBR [libx264 @ 0xb67c20] using cpu capabilities:
    
> MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX [libx264 @ 0xb67c20]
    
> profile Main, level 1.3 Output #0, m4v, to
    
> '/home/ssp/resources/users/11/026468c8f4ea1beee0a585ebc2208137.m4v':  
    
> Metadata:
    
>     major_brand     : M4VP
    
>     minor_version   : 1
    
>     compatible_brands: M4VPM4A mp42isom
    
>     creation_time   : 2008-08-26 17:28:47
    
>     encoder         : Lavf53.21.1
    
>     Stream #0.0(eng): Video: libx264, yuv420p, 320x176, q=10-51, 512 kb/s, 90k tbn, 29.97 tbc
    
>     Metadata:
    
>       creation_time   : 2008-08-26 17:28:47
    
>     Stream #0.1(eng): Audio: libmp3lame, 44100 Hz, 1 channels, s16, 128 kb/s
    
>     Metadata:
    
>       creation_time   : 2008-08-26 17:28:47 Stream mapping:   Stream #0.0 -> #0.0   Stream #0.1 -> #0.1 Press ctrl-c to stop encoding frame=  240 fps=154 q=11.0 Lsize=     642kB time=7.97 bitrate=
    
> 659.3kbits/s     video:516kB audio:126kB global headers:0kB muxing overhead 0.000000% frame I:1     Avg QP:15.35  size:  9995 [libx264 @
    
> 0xb67c20] frame P:77    Avg QP:13.25  size:  5419 [libx264 @ 0xb67c20]
    
> frame B:162   Avg QP:18.31  size:   625 [libx264 @ 0xb67c20]
    
> consecutive B-frames:  2.5% 12.5% 30.0% 55.0% [libx264 @ 0xb67c20] mb
    
> I  I16..4:  9.1%  0.0% 90.9% [libx264 @ 0xb67c20] mb P  I16..4:  2.1% 
    
> 0.0%  2.8%  P16..4: 18.0% 29.9% 44.8%  0.0%  0.0%    skip: 2.3% [libx264 @ 0xb67c20] mb B  I16..4:  0.1%  0.0%  0.0%  B16..8: 35.2%
    
> 20.2%  1.9%  direct:14.5%  skip:28.1%  L0:26.3% L1:38.1% BI:35.6% [libx264 @ 0xb67c20] coded y,uvDC,uvAC intra: 83.7% 91.7% 84.7% inter:
    
> 27.7% 43.4% 13.9% [libx264 @ 0xb67c20] i16 v,h,dc,p: 20% 29% 42%  9% [libx264 @ 0xb67c20] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 17% 29% 20%  4% 
    
> 8%  6%  9%  3%  4% [libx264 @ 0xb67c20] i8c dc,h,v,p: 60% 19% 16%  5%
    
> [libx264 @ 0xb67c20] Weighted P-Frames: Y:2.6% UV:0.0% [libx264 @
    
> 0xb67c20] ref P L0: 75.6% 13.5%  8.0%  2.8%  0.1% [libx264 @ 0xb67c20]
    
> ref B L0: 94.5%  5.5% [libx264 @ 0xb67c20] kb/s:528.00

  • ffmpeg cannot generate thumbnail [migrated]

    25 mars 2013, par Alex Flo

    I use ffmpeg to generate 10 .jpeg thumbs out of a video file. Most of the time it works fine but for some files (a 55seconds .mp4 for example) I get only the first 4 out of 10 captures, for the rest I get this error :
    Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)

    The command I use to convert is this one
    ffmpeg -ss 16 -i /path/source.mp4 -y -f image2 -t 0.001 -s 320*240 /path/thumb4.jpg
    where -ss value is a multiple of 4 and from 20 it stops working.

    Command line full output :

    `# ffmpeg -ss 77 -i /path/source.mp4 -y -f image2 -t 0.001 -s 320*240 /path/thumb7.jpg  
    
ffmpeg version git-2013-02-25-b8f6912 Copyright (c) 2000-2013 the FFmpeg developers  
    
  built on Feb 25 2013 15:18:21 with gcc 4.4.5 (Debian 4.4.5-8)  
    
  configuration: --enable-shared --enable-libx264 --enable-gpl  
    
  libavutil      52. 17.103 / 52. 17.103  
    
  libavcodec     54. 92.100 / 54. 92.100  
    
  libavformat    54. 63.100 / 54. 63.100  
    
  libavdevice    54.  3.103 / 54.  3.103  
    
  libavfilter     3. 41.100 /  3. 41.100  
    
  libswscale      2.  2.100 /  2.  2.100  
    
  libswresample   0. 17.102 /  0. 17.102  
    
  libpostproc    52.  2.100 / 52.  2.100  
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/path/source.mp4':  
    
  Metadata:  
    
    major_brand     : mp42  
    
    minor_version   : 19529845  
    
    compatible_brands: mp42isom  
    
    creation_time   : 2013-03-20 21:45:43  
    
  Duration: 00:02:04.62, start: 0.000000, bitrate: 605 kb/s  
    
    Stream #0:0(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 64 kb/s  
    
    Metadata:  
    
      creation_time   : 2013-03-20 21:45:43  
    
      handler_name    : Sound Media Handler  
    
    Stream #0:1(eng): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p, 720x480 [SAR 40:33 DAR 20:11], 983 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc  
    
    Metadata:  
    
      creation_time   : 2013-03-20 21:45:43  
    
      handler_name    : Video Media Handler  
    
Output #0, image2, to '/path/thumb7.jpg':  
    
  Metadata:  
    
    major_brand     : mp42  
    
    minor_version   : 19529845  
    
    compatible_brands: mp42isom  
    
    encoder         : Lavf54.63.100  
    
    Stream #0:0(eng): Video: mjpeg, yuvj420p, 320x240 [SAR 15:11 DAR 20:11], q=2-31, 200 kb/s, 90k tbn, 29.97 tbc  
    
    Metadata:
    
      creation_time   : 2013-03-20 21:45:43  
    
      handler_name    : Video Media Handler  
    
Stream mapping:  
    
  Stream #0:1 -> #0:0 (h264 -> mjpeg)  
    
Press [q] to stop, [?] for help  
    
frame=    0 fps=0.0 q=0.0 Lsize=N/A time=00:00:00.00 bitrate=N/A      
    
video:0kB audio:0kB subtitle:0 global headers:0kB muxing overhead -inf%  
    
Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)`  

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