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  • Contribute to translation

    13 avril 2011

    You can help us to improve the language used in the software interface to make MediaSPIP more accessible and user-friendly. You can also translate the interface into any language that allows it to spread to new linguistic communities.
    To do this, we use the translation interface of SPIP where the all the language modules of MediaSPIP are available. Just subscribe to the mailing list and request further informantion on translation.
    MediaSPIP is currently available in French and English (...)

  • 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

  • Librairies et binaires spécifiques au traitement vidéo et sonore

    31 janvier 2010, par

    Les logiciels et librairies suivantes sont utilisées par SPIPmotion d’une manière ou d’une autre.
    Binaires obligatoires FFMpeg : encodeur principal, permet de transcoder presque tous les types de fichiers vidéo et sonores dans les formats lisibles sur Internet. CF ce tutoriel pour son installation ; Oggz-tools : outils d’inspection de fichiers ogg ; Mediainfo : récupération d’informations depuis la plupart des formats vidéos et sonores ;
    Binaires complémentaires et facultatifs flvtool2 : (...)

Sur d’autres sites (12175)

  • Retrieving and Saving media metadata using FFmpeg

    10 juin 2015, par Rahul Patwa

    I want to read the metadata in media files and then save that metadata in a text/xml file, so that I can later insert that data in my database. I would prefer to use ffmpeg.

    Also is the same thing possible with MediaInfo ?? I know I can get the metadata for individual tracks using MediaInfo, but I would want to automate it ; as in whenever a new media file is found, read its metadata and then store it in a txt/xml file.

    Or, is there any other tool/utility/API that I can use for this ?

  • Extract RGB values from a AVFrame (FFMPEG) in C++

    9 novembre 2011, par Extrakun

    I am currently trying to read in video frames by using FFMPEG. The format is PIX_FMT_RGB24 ; For each frame, the RGB values are all combined together in frame->data[0] (Where frame is of the type AVFrame).

    How do I extract the individual R, G and B values for each frame ? This is for processing the video. I would think it would work the same way as extracting the RGB values from a bitmap too. Thanks !

  • FFMPEG dropping frames due to color space mismatch

    14 mai 2021, par Ismir Egal

    I've got two png image sequences with 30 frames each i'm trying to blend together.
The problem is that some of the images are in the rgb24 color space while some are in rgba.
Blending the two 30-frame animations together causes it to loose frames - the output is only 26 frames long and the two individual strips out-of-synch.

    


    Command used :

    


    ffmpeg -i a_%04d.png -i b_%04d.png -c:v libvpx -crf 4 -b:v 20M -filter_complex "blend=average" ab.webm


    


    Result :

    


    Input #0, image2, from 'a_%04d.png':
Duration: 00:00:01.20, start: 0.000000, bitrate: N/A
Stream #0:0: Video: png, rgb24(pc), 1280x720 [SAR 2835:2835 DAR 16:9], 25 fps, 25 tbr, 25 tbn, 25 tbc
Input #1, image2, from 'b_%04d.png':
Duration: 00:00:01.20, start: 0.000000, bitrate: N/A
Stream #1:0: Video: png, rgb24(pc), 1280x720 [SAR 2835:2835 DAR 16:9], 25 fps, 25 tbr, 25 tbn, 25 tbc
[...]
Input stream #0:0 frame changed from size:1280x720 fmt:rgb24 to size:1280x720 fmt:rgba
Input stream #1:0 frame changed from size:1280x720 fmt:rgb24 to size:1280x720 fmt:rgba
Input stream #0:0 frame changed from size:1280x720 fmt:rgba to size:1280x720 fmt:rgb24
Input stream #1:0 frame changed from size:1280x720 fmt:rgba to size:1280x720 fmt:rgb24
Input stream #0:0 frame changed from size:1280x720 fmt:rgb24 to size:1280x720 fmt:rgba
Input stream #1:0 frame changed from size:1280x720 fmt:rgb24 to size:1280x720 fmt:rgba
Input stream #0:0 frame changed from size:1280x720 fmt:rgba to size:1280x720 fmt:rgb24
Input stream #1:0 frame changed from size:1280x720 fmt:rgba to size:1280x720 fmt:rgb24
frame=26 fps=13 q=0.0 Lsize=942kB time=00:00:01.12 bitrate=6886.5kbits/s
video:941kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.072036%


    


    Creating videos from the individual sequences does not create this problem, it only occurs when blending them together.
    
Any idea how i can solve this problem or convert both inputs to the rgb24 format first (if that would help) ?

    


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