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  • Automated installation script of MediaSPIP

    25 avril 2011, par

    To overcome the difficulties mainly due to the installation of server side software dependencies, an "all-in-one" installation script written in bash was created to facilitate this step on a server with a compatible Linux distribution.
    You must have access to your server via SSH and a root account to use it, which will install the dependencies. Contact your provider if you do not have that.
    The documentation of the use of this installation script is available here.
    The code of this (...)

  • 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 : (...)

  • Personnaliser en ajoutant son logo, sa bannière ou son image de fond

    5 septembre 2013, par

    Certains thèmes prennent en compte trois éléments de personnalisation : l’ajout d’un logo ; l’ajout d’une bannière l’ajout d’une image de fond ;

Sur d’autres sites (7170)

  • How to set segment duration of a DASH stream using ffmpeg ?

    25 juillet 2024, par ipartola

    I am trying to convert a video to a live DASH stream using ffmpeg. The command looks like this :

    


    ffmpeg -i input.mp4 -preset veryfast \
-c:v libx264 -pix_fmt yuv420p -map 0:v:0 \
-s:0 1280x720 -b:v:0 2M -maxrate:0 2.5M -bufsize:0 4M \
-use_template 1 -use_timeline 1 -seg_duration 1 -f dash foo/stream.mpd


    


    I would like to have the segment duration be 1 second long. However the above command seems to produce chunk files about 8 seconds long instead. However if I change the command to the following (adding -g 5) :

    


    ffmpeg -i input.mp4 -preset veryfast \
-c:v libx264 -pix_fmt yuv420p -map 0:v:0 \
-s:0 1280x720 -b:v:0 2M -maxrate:0 2.5M -bufsize:0 4M \
-g 5 \
-use_template 1 -use_timeline 1 -seg_duration 1 -f dash foo/stream.mpd


    


    I get chunk files that are much closer to 1 second long. Obviously this isn't ideal since that will produce a keyframe every 5 frames. So :

    


    a) I don't understand the relationship between seg_duration and keyframe interval. Why is ffmpeg not automatically just putting a keyframe at the beginning of each chunk ?

    


    b) How do I get the chunk/segment length I want ?

    


  • dash.js not playing mpd file generated by MP4Box

    9 mars 2016, par user3291299

    I have transcoded and stripped the audio of an mp4 file as follows :

    $ ffmpeg -codec:a libvo_aacenc -ar 44100 -ac 1 -codec:v libx264 -profile:v baseline -level 13 -b:v 2000k dir/out.mp4 -i dir/original.mp4

    $ ffmpeg -i dir/out.mp4 -an dir/out_an.mp4

    I’ve used the following MP4Box command to generate a mpd :

    $ MP4Box -dash 30000 -dash-profile on-demand -segment-name out-seg -out dir/out_dash dir/out.mp4

    This results in the following mpd file :

    <?xml version="1.0"?>
    

    
<mpd xmlns="urn:mpeg:dash:schema:mpd:2011" minbuffertime="PT1.500000S" type="static" mediapresentationduration="PT0H2M11.77S" profiles="urn:mpeg:dash:profile:full:2011">
    
 <programinformation moreinformationurl="http://gpac.sourceforge.net">
    
  
    
 </programinformation>
    

    
 <period duration="PT0H2M11.77S">
    
  <adaptationset segmentalignment="true" maxwidth="640" maxheight="360" maxframerate="30000/1001" par="16:9">
    
   <contentcomponent contenttype="video" lang="und"></contentcomponent>
    
   <contentcomponent contenttype="audio" lang="und"></contentcomponent>
    
   <representation mimetype="video/mp4" codecs="avc1.42c00d,mp4a.40.02" width="640" height="360" framerate="30000/1001" sar="1:1" audiosamplingrate="44100" startwithsap="0" bandwidth="2097272">
    
    <audiochannelconfiguration schemeiduri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="2"></audiochannelconfiguration>
    
    <segmentlist timescale="1000" duration="30046">
    
     <initialization sourceurl="out-seginit.mp4"></initialization>
    
     <segmenturl media="out-seg1.m4s"></segmenturl>
    
     <segmenturl media="out-seg2.m4s"></segmenturl>
    
     <segmenturl media="out-seg3.m4s"></segmenturl>
    
     <segmenturl media="out-seg4.m4s"></segmenturl>
    
     <segmenturl media="out-seg5.m4s"></segmenturl>
    
    </segmentlist>
    
   </representation>
    
  </adaptationset>
    
 </period>
    
</mpd>

  • How to convert mpeg-dash files back to mp4 or mkv via FFMPEG

    15 janvier 2017, par Saif Ullah

    Recently I tried downloading a video file via a program called "video cache view", it created two video files instead of one numbered as mpegdashtmp1.mp4 which are i guess in some mpeg-dash format. I searched about it and came to know that out of these two files one should contain the audio and the other will be the video part. How can I convert those files to mp4/mkv via FFMPEG.

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