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  • 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 (...)

  • ANNEXE : Les plugins utilisés spécifiquement pour la ferme

    5 mars 2010, par

    Le site central/maître de la ferme a besoin d’utiliser plusieurs plugins supplémentaires vis à vis des canaux pour son bon fonctionnement. le plugin Gestion de la mutualisation ; le plugin inscription3 pour gérer les inscriptions et les demandes de création d’instance de mutualisation dès l’inscription des utilisateurs ; le plugin verifier qui fournit une API de vérification des champs (utilisé par inscription3) ; le plugin champs extras v2 nécessité par inscription3 (...)

  • Encoding and processing into web-friendly formats

    13 avril 2011, par

    MediaSPIP automatically converts uploaded files to internet-compatible formats.
    Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
    Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
    Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
    All uploaded files are stored online in their original format, so you can (...)

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  • how to use ffmpeg -cookies to download aes encrypted hls stream

    3 mars 2014, par Shuman

    i need this cookies, so i can download stream from a m3u8 file,(it has this line

    #EXT-X-KEY:METHOD=AES-128,URI="https://xxx/myStream.php?wowzasessionid=861683502"

    so i can get the key right ? ( i have the login credential cookies to that site )

    according to this discussion, it was there, and i checked the code on github, it has the option.

    but when i compile it with the default options, there is no cookies option. how do i turn it on ?

    > ./ffmpeg -buildconf
    
ffmpeg version N-61050-g2dcaa1b Copyright (c) 2000-2014 the FFmpeg developers
    
  built on Mar  3 2014 14:31:05 with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-3)
    
  configuration:
    
  libavutil      52. 66.100 / 52. 66.100
    
  libavcodec     55. 52.102 / 55. 52.102
    
  libavformat    55. 33.100 / 55. 33.100
    
  libavdevice    55. 10.100 / 55. 10.100
    
  libavfilter     4.  2.100 /  4.  2.100
    
  libswscale      2.  5.101 /  2.  5.101
    
  libswresample   0. 18.100 /  0. 18.100
    

    
  configuration:
    

    

    
> ffmpeg -cookies
    
/sww/gfx/lib64/python2.6/pytz/__init__.py:32: UserWarning: Module argparse was already imported from /sww/tools/lib64/python2.6/argparse.py, but /usr/lib/python2.6/site-packages is being added to sys.path
    
  from pkg_resources import resource_stream
    
ffmpeg version 1.2 Copyright (c) 2000-2013 the FFmpeg developers
    
  built on Mar 22 2013 09:58:42 with gcc 4.1.2 (GCC) 20080704 (Red Hat 4.1.2-44)
    
  configuration: --prefix=/dept/srd/vendor/ffmpeg/bundle.rhel5/ffmpeg1.2.0 --enable-static --enable-pthreads --enable-gpl --disable-ffserver --disable-ffplay --disable-ffprobe --extra-cflags=-I/dept/srd/vendor/ffmpeg/extern/rhel5/include --extra-ldflags=-L/dept/srd/vendor/ffmpeg/extern/rhel5/lib --enable-x11grab --enable-libx264 --enable-nonfree --enable-fontconfig --enable-libfreetype --enable-swscale --enable-libmp3lame --enable-libfaac
    
  libavutil      52. 18.100 / 52. 18.100
    
  libavcodec     54. 92.100 / 54. 92.100
    
  libavformat    54. 63.104 / 54. 63.104
    
  libavdevice    54.  3.103 / 54.  3.103
    
  libavfilter     3. 42.103 /  3. 42.103
    
  libswscale      2.  2.100 /  2.  2.100
    
  libswresample   0. 17.102 /  0. 17.102
    
  libpostproc    52.  2.100 / 52.  2.100
    
Unrecognized option 'cookies'.
    
Error splitting the argument list: Option not found

  • Using VLC for MPEG2 video encoding with I-frames only

    4 mars 2014, par user3319428

    Is there a VLC option to be able to do MPEG2 video encoding with I-frames only (not P and B) ? I would like to be able to transcode from one file format (such as AVI) to another with MPEG2 transcoding done so that only I-frames are encoded. Later this file will be streamed to an MPEG2 decoder, and I would like to have this feature to simplify the decoder (due to hardware/software restrictions).

    It looks like the ffmpeg module in VLC may be able to do this, but I am not sure of the options for it. I tried to use the keyint=0 option (where the key frames are considered to be I-frames), but it did not seem to work, as the same output file size resulted with or without this option.

    What I really want is for the output file to be in transport stream format too.

    I am using VLC ver. 2.1.3 under Windows 7.

    Thanks in advance for any help you can offer.

  • screen mess when change video on rtmp

    16 mars 2014, par dingyaguang117

    1. when I use "ffmpeg -i" to probe video info， the infos below will be shown (take 2 examples)

      Stream #0:0 : Video : h264 (High), yuv420p, 600x352, 281 kb/s, 29.97 tbr, 1k tbn, 59.94 tbc
Stream #0:0(und) : Video : h264 (Main) (avc1 / 0x31637661), yuv420p, 640x480 [SAR 1:1 DAR 4:3], 532 kb/s, 25 fps, 25 tbr, 25k tbn, 50 tbc

      What does the "avc1" mean？why the first doesn't shown ?

      Will it be "screen mess","no sound" or "no image" when switch the video that is publishing to rtmp server if the contiguous video encode by different codec ?

    2. How to switch video publishing to rtmp smoothly ？
      I use nginx-rtmp-module，set "live on"，and use "ffmpeg -re" to publish video.
      My method to switch video is to "pkill ffmpeg", and start another "ffmpeg -re" process.
      If the contiguous videos encode by different codec，it maybe "screen mess","no sound" or "no image". What can I do to solve it ?

    3. Are there any experiences(about tools,switch videos,how to choose encoding) when doing live video ?

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