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  • L’agrémenter visuellement

    10 avril 2011

    MediaSPIP est basé sur un système de thèmes et de squelettes. Les squelettes définissent le placement des informations dans la page, définissant un usage spécifique de la plateforme, et les thèmes l’habillage graphique général.
    Chacun peut proposer un nouveau thème graphique ou un squelette et le mettre à disposition de la communauté.

  • Ajouter des informations spécifiques aux utilisateurs et autres modifications de comportement liées aux auteurs

    12 avril 2011, par

    La manière la plus simple d’ajouter des informations aux auteurs est d’installer le plugin Inscription3. Il permet également de modifier certains comportements liés aux utilisateurs (référez-vous à sa documentation pour plus d’informations).
    Il est également possible d’ajouter des champs aux auteurs en installant les plugins champs extras 2 et Interface pour champs extras.

  • 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 (...)

Sur d’autres sites (12376)

  • Create stopmotion video with ffmpeg - error while rendering

    30 mai 2012, par Niklas

    I'm currently creating a stopmotion video with the help of ffmpeg and some scripts I've made. Although in the last clip I attempted to render I had a couple of frames which I've edited. The method I'm using has worked before so I'm certain that it has to do with GIMP changing something with the files. I work with .png-images. This is the command and the output I get :

    ffmpeg -sameq -f image2 -r 7 -i "$src_dir/frame-%06d.png" -r 25 "$dest_dir/$file_name.avi"

    output :

    ffmpeg version 0.8.1-4:0.8.1-0ubuntu1, Copyright (c) 2000-2011 the Libav developers
    
  built on Mar 22 2012 05:09:06 with gcc 4.6.3
    
This program is not developed anymore and is only provided for compatibility. Use avconv instead (see Changelog for the list of incompatible changes).
    
Input #0, image2, from '/mnt/storage/selected_frames/005-Middag-Animation/frame-%06d.png':
    
  Duration: 00:00:02.85, start: 0.000000, bitrate: N/A
    
    Stream #0.0: Video: png, bgra, 1280x720, 7 fps, 7 tbr, 7 tbn, 7 tbc
    
File '/mnt/storage/Videoklipp//005-Middag-Animation.avi' already exists. Overwrite ? [y/N] y
    
Incompatible pixel format 'bgra' for codec 'mpeg4', auto-selecting format 'yuv420p'
    
[buffer @ 0x1b88860] w:1280 h:720 pixfmt:bgra
    
[avsink @ 0x1b8a480] auto-inserting filter 'auto-inserted scaler 0' between the filter 'src' and the filter 'out'
    
[scale @ 0x1b8ab80] w:1280 h:720 fmt:bgra -> w:1280 h:720 fmt:yuv420p flags:0x4
    
Output #0, avi, to '/mnt/storage/Videoklipp//005-Middag-Animation.avi':
    
  Metadata:
    
    ISFT            : Lavf53.21.0
    
    Stream #0.0: Video: mpeg4, yuv420p, 1280x720, q=2-31, 2 kb/s, 25 tbn, 25 tbc
    
Stream mapping:
    
  Stream #0.0 -> #0.0
    
Press ctrl-c to stop encoding
    
[buffer @ 0x1b88860] Changing frame properties on the fly is not supported.
    
    Last message repeated 6 times
    
frame=   13 fps=  0 q=0.0 Lsize=     524kB time=2.20 bitrate=1951.2kbits/s    
    
video:517kB audio:0kB global headers:0kB muxing overhead 1.323318%

    "[buffer @ 0x1b88860] Changing frame properties on the fly is not supported"

    What can I do to fix this ? Any help is appreciated :)

  • libopenjpeg encoding with ffmpeg

    21 décembre 2012, par stib

    The libopenjpeg codec for ffmpeg is deemed experimental. Does anyone know if it is useable for storage of archival video material, i.e. if I write a whole bunch of video files with it, am I likely top be able to open them in the future ?

    Is there any other Free/OSS alternative to using ffmpeg for encoding motionJpeg2000, or for archiving video in general ?

  • Revision cc80247f16 : Switch the order of calculating 2-D inverse transform The 2-D inverse transform

    27 décembre 2012, par Yunqing Wang

    Changed Paths : Modify /vp9/common/vp9_idctllm.c Switch the order of calculating 2-D inverse transform The 2-D inverse transform X = M1*Z*Transposed_M2 was calculated in 2 steps from left to right : 1. Vertical transform : Y = M1*Z 2. Horizontal transform : X= Y*Transposed_M2 In SIMD, a transpose is (...)

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