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  • Websites made ​​with MediaSPIP

    2 mai 2011, par

    This page lists some websites based on MediaSPIP.

  • Creating farms of unique websites

    13 avril 2011, par

    MediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
    This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...)

  • Other interesting software

    13 avril 2011, par

    We don’t claim to be the only ones doing what we do ... and especially not to assert claims to be the best either ... What we do, we just try to do it well and getting better ...
    The following list represents softwares that tend to be more or less as MediaSPIP or that MediaSPIP tries more or less to do the same, whatever ...
    We don’t know them, we didn’t try them, but you can take a peek.
    Videopress
    Website : http://videopress.com/
    License : GNU/GPL v2
    Source code : (...)

Sur d’autres sites (5710)

  • Why is one ffmpeg webm dash stream much larger than the others ?

    5 janvier 2017, par ranvel

    Over the summer, I worked on putting together a script which took a x264 video/mp3 stream and broke it up into the different streams so that it would work via MSE-DASH. (Based heavily on the instructions on the webmproject.org website) Those same scripts have ceased to work, turning a 6GB video into several 25 Gb videos. I kept up with updates of ffmpeg and so I don’t know when it stopped working, but I am guessing it was due to the way that their DASH Webm implementation was updated.

    I found new method which works better, but still has a major problem with one stream. I was hoping someone could explain how this encoding works so that I could understand the underlying cause.

    #!/bin/bash
    
COMMON_OPTS="-map 0:0 -an -threads 11 -cpu-used 4 -cmp chroma"
    
WEBM_OPTS="-f webm -c:v vp9 -keyint_min 50 -g 50 -dash 1"
    

    
ffmpeg -i $1 -vn -acodec libvorbis -ab 128k audio.webm &
    
ffmpeg -i $1 $COMMON_OPTS $WEBM_OPTS -b:v 500k -vf scale=1280:720 -y vid-500k.webm &
    
ffmpeg -i $1 $COMMON_OPTS $WEBM_OPTS -b:v 700k -vf scale=1280:720 -y vid-700k.webm & 
    
ffmpeg -i $1 $COMMON_OPTS $WEBM_OPTS -b:v 1000k -vf scale=1280:720 -y vid-1000k.webm &
    
ffmpeg -i $1 $COMMON_OPTS $WEBM_OPTS -b:v 1500k -vf scale=1280:720 -y vid-1500k.webm  

    The transcode is not yet complete, but you can see where this is headed :

    -rw-r--r--  1 user  staff    87M Jan  4 23:27 audio.webm
    
-rw-r--r--  1 user  staff    27M Jan  4 23:42 vid-1000k.webm
    
-rw-r--r--  1 user  staff   285M Jan  4 23:42 vid-1500k.webm
    
-rw-r--r--  1 user  staff    15M Jan  4 23:42 vid-500k.webm
    
-rw-r--r--  1 user  staff    20M Jan  4 23:42 vid-700k.webm

    The 1500k variant is disproportionately larger than the other streams.

    The other problem is that when I use a shorter video, lets say eight or nine minutes, the above configuration runs as expected and everything is perfect. I don’t know where the limit for this is since each test costs a lot of processing power and time, but if it’s less than ten minutes, it works and if its longer than an hour, it produces massive files.

  • Add aac single audio to MPEG DASH mpd files

    26 avril 2017, par Adminy

    I am trying to add manually to the .mpd file the following code.

        <adaptationset contenttype="audio" segmentalignment="true" bitstreamswitching="true" lang="English">
    
        <representation mimetype="audio/mp4" codecs="mp4a.40.2" audiosamplingrate="44100">
    
            <audiochannelconfiguration schemeiduri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="2"></audiochannelconfiguration>
    
            <segmenttemplate timescale="44100" media="http://localhost/audio.aac" startnumber="1">
    
            </segmenttemplate>
    
        </representation>
    
    </adaptationset>

    But its not working, Does everything have to be segmented in .mpd files ? or can I have a single .acc file ?

  • doc/muxers/dash : review documentation

    18 janvier 2024, par Stefano Sabatini
    doc/muxers/dash : review documentation

    Sort options by name, review formatting, apply consistency fixes and
    
fill the gaps (e.g. missing value for constants or flags), and review
    
and extend content.
    • [DH] doc/muxers.texi

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