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  • La file d’attente de SPIPmotion

    28 novembre 2010, par

    Une file d’attente stockée dans la base de donnée
    Lors de son installation, SPIPmotion crée une nouvelle table dans la base de donnée intitulée spip_spipmotion_attentes.
    Cette nouvelle table est constituée des champs suivants : id_spipmotion_attente, l’identifiant numérique unique de la tâche à traiter ; id_document, l’identifiant numérique du document original à encoder ; id_objet l’identifiant unique de l’objet auquel le document encodé devra être attaché automatiquement ; objet, le type d’objet auquel (...)

  • Contribute to documentation

    13 avril 2011

    Documentation is vital to the development of improved technical capabilities.
    MediaSPIP welcomes documentation by users as well as developers - including : critique of existing features and functions articles contributed by developers, administrators, content producers and editors screenshots to illustrate the above translations of existing documentation into other languages
    To contribute, register to the project users’ mailing (...)

  • Selection of projects using MediaSPIP

    2 mai 2011, par

    The examples below are representative elements of MediaSPIP specific uses for specific projects.
    MediaSPIP farm @ Infini
    The non profit organizationInfini develops hospitality activities, internet access point, training, realizing innovative projects in the field of information and communication technologies and Communication, and hosting of websites. It plays a unique and prominent role in the Brest (France) area, at the national level, among the half-dozen such association. Its members (...)

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  • MIME type for transcoded stream

    11 septembre 2012, par Matt Joiner

    I wish to determine the MIME type of the contents of a pipe. The pipe is outputting a transcoded video stream, so there is no corresponding file extension.

    Can I determine the MIME type in these circumstances using say ffprobe -i pipe:0 or some equivalent ? Is there a canonical mapping of codecs or container formats to MIME type ?

  • Converting series of images with ffmpeg results in black video [migrated]

    27 avril 2013, par Marco Gagliardi

    I've just downloaded ffmpeg since it seems to perfectly match my needs (make a video from a set of pictures). I'm currently playing around with some examples just to get started and there's something weird happening that I can't explain.
    I'm trying this command (provided in the official documentation) :

    ffmpeg -f image2 -pattern_type glob -i 'foo-*.jpeg' -r 12 -s WxH foo.avi

    on a data set of 10 jpg pictures (of course I changed the pattern with '*.jpg'). The video seems to be encoded correctly but it's simply too fast to be sure about that (anyway it stops on the last frame that corresponds to the last picture). In order to get a longer video i thought to low the frame rate from 12 to 1 (one sec each picture) or 0.5 (2 sec each one) and so on.. no way ! with low rate values even if the video is played the pictures are simply not displayed. The player (VLC in my case) just shows a blank/empty video for a few seconds.

    Am I making something wrong or have I misunderstood the -r parameter ? Is it something related to codecs involved ? Finally.. How can i get each picture displayed for 1 or 2 seconds ?

    Here's the output :

    MacBook-Pro$ ffmpeg -f image2 -pattern_type glob -i '*.jpg' -r 1 -s 200x300 foo.avi
    
ffmpeg version N-52517-g1e4f75d Copyright (c) 2000-2013 the FFmpeg developers
    
  built on Apr 27 2013 19:41:11 with llvm-gcc 4.2.1 (LLVM build 2336.11.00)
    
  configuration: --disable-yasm
    
  libavutil      52. 27.101 / 52. 27.101
    
  libavcodec     55.  6.100 / 55.  6.100
    
  libavformat    55.  3.100 / 55.  3.100
    
  libavdevice    55.  0.100 / 55.  0.100
    
  libavfilter     3. 61.100 /  3. 61.100
    
  libswscale      2.  2.100 /  2.  2.100
    
  libswresample   0. 17.102 /  0. 17.102
    
Input #0, image2, from '*.jpg':
    
  Duration: 00:00:00.40, start: 0.000000, bitrate: N/A
    
    Stream #0:0: Video: mjpeg, yuvj422p, 2560x1920 [SAR 1:1 DAR 4:3], 25 fps, 25 tbr, 25 tbn, 25 tbc
    
File 'foo.avi' already exists. Overwrite ? [y/N] y
    
Output #0, avi, to 'foo.avi':
    
  Metadata:
    
    ISFT            : Lavf55.3.100
    
    Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 200x300 [SAR 2:1 DAR 4:3], q=2-31, 200 kb/s, 1 tbn, 1 tbc
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (mjpeg -> mpeg4)
    
Press [q] to stop, [?] for help
    
frame=    2 fps=0.0 q=2.0 Lsize=      43kB time=00:00:02.00 bitrate= 177.1kbits/s dup=0 drop=8    
    
video:38kB audio:0kB subtitle:0 global headers:0kB muxing overhead 15.099197%
    
MacBook-Pro$

  • PHP imagick equivalent of -define png:color-type=6

    5 avril 2016, par user1661677

    I’m needing to save my PNG files with a different color type so ffmpeg can process them correctly. I’m using the PHP library for imagemagick, and I’m trying to figure out how to implement the following (command line) in imagick PHP :

    -define png:color-type=6

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