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Autres articles (112)

  • Keeping control of your media in your hands

    13 avril 2011, par

    The vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
    While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
    MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
    MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...)

  • Participer à sa traduction

    10 avril 2011

    Vous pouvez nous aider à améliorer les locutions utilisées dans le logiciel ou à traduire celui-ci dans n’importe qu’elle nouvelle langue permettant sa diffusion à de nouvelles communautés linguistiques.
    Pour ce faire, on utilise l’interface de traduction de SPIP où l’ensemble des modules de langue de MediaSPIP sont à disposition. ll vous suffit de vous inscrire sur la liste de discussion des traducteurs pour demander plus d’informations.
    Actuellement MediaSPIP n’est disponible qu’en français et (...)

  • Submit bugs and patches

    13 avril 2011

    Unfortunately a software is never perfect.
    If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
    If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
    You may also (...)

Sur d’autres sites (13389)

  • Live WebRTC streams (getUserMedia) to DASH using WebM

    4 septembre 2015, par cyp

    I’m trying to understand the feasibility of a live streaming solution.
    I want to grab WebRTC streams (audio and video), send them to a server and transform them in chunks to send to a html5 video tag or a DASH player using WebM container (VP8 and Opus codecs).

    I also looked into ffmpeg, ffserver and gstreamer but...

    My question is how to feed the WebRTC streams (live) and transform them in HTTP chunks (live DASH compatible) ?

    Anyone achieved something like this ?

  • 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 ?

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