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  • 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" (...)

  • 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 (...)

  • 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 (...)

Sur d’autres sites (6431)

  • Revision 60008 : - Ajout de possibilités de configuration dans la noisette du bouton like ...

    2 avril 2012, par yffic@… — Log

    - Ajout de possibilités de configuration dans la noisette du bouton like de facebook
    - Ajout d’une noisette pour la boîte Like de Facebook

  • Combine 2 .FLV videos

    4 décembre 2015, par Rune

    For the last 4 hours I’ve been trying to combine 2 .flv files into one using ffmpeg (or well, just C# in general).

    Here’s what I got so far :
    I’ve converted both the videos to .mp4 videos :

    "-i " + videoFileLocation + " -c copy -copyts " + newConvertedFileLocation

    I have then combined the two .mp4 files into a single one using :
    (txtPath is the text file with the two mp4 file locations)

    "-f concat -i " + txtPath + " -c copy " + saveLocation

    This ends up with an mp4 file which contains the combination of both the videos BUT with the following fault :

    The length of the first video is 0:05

    The length of the second video is 6:11

    However the length of the combined video is for some reason 07:51 - thus the video runs at a slower pace than it should.

    Furthermore the audio is async with the video.

    What am I doing wrong here ?

    I haven’t used ffmpeg before and I just wanna get this working.

    Any help is greatly appreciated !

    As requested here is the output from running ’ffmpeg -i input1.flv -i input2.flv’ :

    ffmpeg version 2.7 Copyright (c) 2000-2015 the FFmpeg developers   built with gcc 4.9.2 (GCC)...
    

    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'filepath\input1.flv':   Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    creation_time   : 1970-01-01 00:00:00
    
    encoder         : Lavf53.24.2   Duration: 00:00:05.31, start: 0.000000, bitrate: 1589 kb/s
    
    Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 1205 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
    
    Metadata:
    
      creation_time   : 1970-01-01 00:00:00
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, 5.1, fltp, 384 kb/s (default)
    
    Metadata:
    
      creation_time   : 1970-01-01 00:00:00
    
      handler_name    : SoundHandler Input #1, flv, from 'filepath\input2.flv':   Metadata:
    
    audiosize       : 4476626
    
    canSeekToEnd    : true
    
    datasize        : 23876671
    
    videosize       : 19004263
    
    hasAudio        : true
    
    hasCuePoints    : false
    
    hasKeyframes    : true
    
    hasMetadata     : true
    
    hasVideo        : true
    
    lasttimestamp   : 372
    
    metadatacreator : flvtool++ (Facebook, Motion project, dweatherford)
    
    totalframes     : 9298
    
    encoder         : Lavf56.36.100   Duration: 00:06:11.92, start: 0.080000, bitrate: 513 kb/s
    
    Stream #1:0: Video: h264 (High), yuv420p, 646x364 [SAR 1:1 DAR 323:182], 400 kb/s, 25 fps, 25 tbr, 1k tbn, 50 tbc
    
    Stream #1:1: Audio: aac (LC), 44100 Hz, stereo, fltp, 96 kb/s At least one output file must be specified

  • How do I create a 360 [stereo] panorama video of a virtual scene using OpenGL or DirectX ?

    14 novembre 2015, par Prashant Raina

    Like many of you, I have seen the magical 360 degree videos doing the rounds on Facebook right now. I would really like to know how to programmatically create such a video using OpenGL or DirectX, but I found surprisingly little information about it.
    There are several issues I am not clear on :

    1. How do I set up my vertex and fragment shaders to render a frame of 360 video ?
    2. Do I have to generate one image per frame, or a cubemap, or something else ?
    3. Once I have the frames, how do I combine them into a single video file for upload ? My Googling suggests that I should use ffmpeg, but I couldn’t figure out which parameters to use, or what sort of input it expects for 360 video.
    4. What additional steps are needed to make a stereo 360 video ?

    I am not asking how to render an existing video onto the screen, or how to use physical cameras for 360 video.

    Thanks in advance !

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