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  • MediaSPIP 0.1 Beta version

    25 avril 2011, par

    MediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
    The zip file provided here only contains the sources of MediaSPIP in its standalone version.
    To get a working installation, you must manually install all-software dependencies on the server.
    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

  • MediaSPIP version 0.1 Beta

    16 avril 2011, par

    MediaSPIP 0.1 beta est la première version de MediaSPIP décrétée comme "utilisable".
    Le fichier zip ici présent contient uniquement les sources de MediaSPIP en version standalone.
    Pour avoir une installation fonctionnelle, il est nécessaire d’installer manuellement l’ensemble des dépendances logicielles sur le serveur.
    Si vous souhaitez utiliser cette archive pour une installation en mode ferme, il vous faudra également procéder à d’autres modifications (...)

  • Amélioration de la version de base

    13 septembre 2013

    Jolie sélection multiple
    Le plugin Chosen permet d’améliorer l’ergonomie des champs de sélection multiple. Voir les deux images suivantes pour comparer.
    Il suffit pour cela d’activer le plugin Chosen (Configuration générale du site > Gestion des plugins), puis de configurer le plugin (Les squelettes > Chosen) en activant l’utilisation de Chosen dans le site public et en spécifiant les éléments de formulaires à améliorer, par exemple select[multiple] pour les listes à sélection multiple (...)

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  • MPEG-DASH create initialization segment

    3 novembre 2014, par static

    I’m segmenting the video capture of the desktop using ffmpeg -segment and sending them over network in order to be served to clients and to be played using dash.js. The problem is that the player is searching for the initialization segment and i don’t seem to be able to figure out how to create it.
    I create the segments using this ffmpeg command :

    ffmpeg -rtbufsize 1500M -f dshow -r 15 -i video="UScreenCapture"
    
-flags +global_header -vcodec libvpx -crf 10 -quality good -keyint_min 15 -g 15
    
-cpu-used 3 -b:v 1000k -qmin 10 -qmax 42  -threads 2 -vf scale=-1:480 -bufsize 1
    
500 -map 0 -f stream_segment -segment_time 2 -segment_format webm http://localho
    
st:3000/stream/22/%03d

    The manifest that i create for the stream looks something like this :

    <mpd xmlns="urn:mpeg:dash:schema:mpd:2011" type="dynamic" availabilitystarttime="2014-06-19T07:47:40.079Z" minbuffertime="PT0S" profiles="urn:mpeg:dash:profile:isoff-live:2011" suggestedpresentationdelay="PT40S" maxsegmentduration="PT2.000S" minimumupdateperiod="PT1000M">
    
<period bitstreamswitching="true" start="PT0S">
    
<adaptationset mimetype="video/webm" segmentalignment="true" startwithsap="1" maxwidth="1280" maxheight="720" maxframerate="15">
    
<contentcomponent contenttype="video"></contentcomponent>
    
<segmenttemplate presentationtimeoffset="0" timescale="90000" media="$Number$/" duration="180000" startnumber="0"></segmenttemplate>
    
<representation width="853" height="480" framerate="15" bandwidth="1000000" codecs="vp8"></representation>
    
</adaptationset>
    
</period>
    
</mpd>

    The player debugging mode prints the following things :

    Getting the request for time: 0 dash.all.js:2073
    
Index for time 0 is 0 dash.all.js:2073
    
Waiting for more video buffer before starting playback. dash.all.js:2073
    
BufferController video seek: 0 dash.all.js:2073
    
Marking a special seek for initial video playback. dash.all.js:2073
    
Start searching for initialization. dash.all.js:2073
    
Perform init search: stream/22/ dash.all.js:2073
    
Getting the request for time: 0 dash.all.js:2073
    
Index for time 0 is 0 dash.all.js:2073
    
Data changed - loading the video fragment for time: 0 dash.all.js:2073
    
Getting the request for time: 0

    How can i create the initialization segment for the generated segments ? I can’t seem to be able to get it to work.

  • How to decode an MPEG Dash Widevine

    5 janvier 2016, par Martijn

    I have a video stream that I’d like to save to disk so I can play this back at a later time when I don’t have an internet connection at my disposal.

    The stream is a MPEG Dash Stream that uses Common Encryption, PlayReady, Widevine or Marlin.

    Is this possible in language like Go or NodeJS ?
    Could this be done using a command line utility like ffmpeg ?

  • fate : Add basic tests for WebM Dash Manifest

    26 août 2014, par Vignesh Venkatasubramanian
    fate : Add basic tests for WebM Dash Manifest

    Add fate tests that test out the functionality of WebM DASH
    
Manifest XML generation. This patch contains the vpx.mak file
    
changes and the reference gold XML files.
    

    Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
    • [DH] tests/fate/vpx.mak
    • [DH] tests/ref/fate/webm-dash-manifest
    • [DH] tests/ref/fate/webm-dash-manifest-unaligned-audio-streams
    • [DH] tests/ref/fate/webm-dash-manifest-unaligned-video-streams

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