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  • Websites made ​​with MediaSPIP

    2 mai 2011, par

    This page lists some websites based on MediaSPIP.

  • Les tâches Cron régulières de la ferme

    1er décembre 2010, par

    La gestion de la ferme passe par l’exécution à intervalle régulier de plusieurs tâches répétitives dites Cron.
    Le super Cron (gestion_mutu_super_cron)
    Cette tâche, planifiée chaque minute, a pour simple effet d’appeler le Cron de l’ensemble des instances de la mutualisation régulièrement. Couplée avec un Cron système sur le site central de la mutualisation, cela permet de simplement générer des visites régulières sur les différents sites et éviter que les tâches des sites peu visités soient trop (...)

  • 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 (...)

Sur d’autres sites (10476)

  • MPEG Dash output generated by FFMPEG not working

    8 janvier 2019, par Anto Joy

    I created a dash output sample_video.mpd file using ffmpeg, but when I tried to play it using dash js the video was just loading and nothing else.
    Below is the generated mpd file

    <?xml version="1.0" encoding="utf-8"?>
    
<mpd xmlns="urn:mpeg:dash:schema:mpd:2011" profiles="urn:mpeg:dash:profile:isoff-live:2011" type="static" mediapresentationduration="PT1M2.3S" minbuffertime="PT20.0S">
    
<programinformation>
    
</programinformation>
    
<period start="PT0.0S">
    
    <adaptationset contenttype="video" segmentalignment="true" bitstreamswitching="true" lang="und">
    
        <representation mimetype="video/mp4" codecs="avc1.640015" bandwidth="255520" width="426" height="240" framerate="24/1">
    
            <segmenttemplate timescale="12288" initialization="init-stream$RepresentationID$.m4s" media="chunk-stream$RepresentationID$-$Number%05d$.m4s" startnumber="3">
    
                <segmenttimeline>
    
                    <s t="198656" d="69120"></s>
    
                    <s d="75264"></s>
    
                    <s d="174592"></s>
    
                    <s d="122880"></s>
    
                    <s d="125440"></s>
    
                </segmenttimeline>
    
            </segmenttemplate>
    
        </representation>
    
        <representation mimetype="video/mp4" codecs="avc1.64001e" bandwidth="726596" width="854" height="480" framerate="24/1">
    
            <segmenttemplate timescale="12288" initialization="init-stream$RepresentationID$.m4s" media="chunk-stream$RepresentationID$-$Number%05d$.m4s" startnumber="3">
    
                <segmenttimeline>
    
                    <s t="198656" d="69120"></s>
    
                    <s d="75264"></s>
    
                    <s d="174592"></s>
    
                    <s d="122880"></s>
    
                    <s d="125440"></s>
    
                </segmenttimeline>
    
            </segmenttemplate>
    
        </representation>
    
        <representation mimetype="video/mp4" codecs="avc1.64001f" bandwidth="1433314" width="1280" height="720" framerate="24/1">
    
            <segmenttemplate timescale="12288" initialization="init-stream$RepresentationID$.m4s" media="chunk-stream$RepresentationID$-$Number%05d$.m4s" startnumber="3">
    
                <segmenttimeline>
    
                    <s t="198656" d="69120"></s>
    
                    <s d="75264"></s>
    
                    <s d="174592"></s>
    
                    <s d="122880"></s>
    
                    <s d="125440"></s>
    
                </segmenttimeline>
    
            </segmenttemplate>
    
        </representation>
    
    </adaptationset>
    
    <adaptationset contenttype="audio" segmentalignment="true" bitstreamswitching="true" lang="und">
    
        <representation mimetype="audio/mp4" codecs="mp4a.40.2" bandwidth="341000" audiosamplingrate="48000">
    
            <audiochannelconfiguration schemeiduri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="6"></audiochannelconfiguration>
    
            <segmenttemplate timescale="48000" initialization="init-stream$RepresentationID$.m4s" media="chunk-stream$RepresentationID$-$Number%05d$.m4s" startnumber="3">
    
                <segmenttimeline>
    
                    <s t="772096" d="270336"></s>
    
                    <s d="293888"></s>
    
                    <s d="681984"></s>
    
                    <s d="480256"></s>
    
                    <s d="492544"></s>
    
                </segmenttimeline>
    
            </segmenttemplate>
    
        </representation>
    
        <representation mimetype="audio/mp4" codecs="mp4a.40.2" bandwidth="341000" audiosamplingrate="48000">
    
            <audiochannelconfiguration schemeiduri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="6"></audiochannelconfiguration>
    
            <segmenttemplate timescale="48000" initialization="init-stream$RepresentationID$.m4s" media="chunk-stream$RepresentationID$-$Number%05d$.m4s" startnumber="3">
    
                <segmenttimeline>
    
                    <s t="772096" d="270336"></s>
    
                    <s d="293888"></s>
    
                    <s d="681984"></s>
    
                    <s d="480256"></s>
    
                    <s d="492544"></s>
    
                </segmenttimeline>
    
            </segmenttemplate>
    
        </representation>
    
        <representation mimetype="audio/mp4" codecs="mp4a.40.2" bandwidth="341000" audiosamplingrate="48000">
    
            <audiochannelconfiguration schemeiduri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="6"></audiochannelconfiguration>
    
            <segmenttemplate timescale="48000" initialization="init-stream$RepresentationID$.m4s" media="chunk-stream$RepresentationID$-$Number%05d$.m4s" startnumber="3">
    
                <segmenttimeline>
    
                    <s t="772096" d="270336"></s>
    
                    <s d="293888"></s>
    
                    <s d="681984"></s>
    
                    <s d="480256"></s>
    
                    <s d="492544"></s>
    
                </segmenttimeline>
    
            </segmenttemplate>
    
        </representation>
    
    </adaptationset>
    
</period>
    
</mpd>

    The following is the ffmpeg command that i used to generate multi bitrate video

    ffmpeg -y -i sample_video.mp4 ^
    
-c:v libx264 -x264opts "keyint=24:min-keyint=24:no-scenecut" -r 24 ^
    
-c:a aac -b:a 128k ^
    
-bf 1 -b_strategy 0 -sc_threshold 0 -pix_fmt yuv420p ^
    
-map 0:v:0 -map 0:a:0 -map 0:v:0 -map 0:a:0 -map 0:v:0 -map 0:a:0 ^
    
-b:v:0 250k  -filter:v:0 "scale=-2:240" -profile:v:0 baseline ^
    
-b:v:1 750k  -filter:v:1 "scale=-2:480" -profile:v:1 main ^
    
-b:v:2 1500k -filter:v:2 "scale=-2:720" -profile:v:2 high ^
    
sample_dash.mp4

    and to generate the mpd file

    ffmpeg -y -re -i sample_dash.mp4 ^
    
-map 0 ^
    
-use_timeline 1 -use_template 1 -window_size 5 -adaptation_sets 
    
"id=0,streams=v id=1,streams=a" ^
    
-f dash sample_video.mpd

    Also I saw in the chrome network tab that only init-stream4.m4s and init-stream5.m4s was called.

  • FFMPEG MPEG-DASH playback - Update SPS and PPS info on receiving init segment

    4 novembre 2014, par Chakkra

    I am trying to playback a DASH stream using libdash (for MPD parsing) and FFMPEG (for fmp4 parsing). When we don’t switch between Representations, FFMPEG was able to successfully parse the fmp4 file and give proper SPS and PPS info for the video stream (H.264 video).

    When we implement the adaptive bitrate switching logic to switch between Representations of an Adaptation set, FFMPEG is not able to update the SPS and PPS data. Even after we give the init segment to FFMPEG (of the newly switched Representaion), the SPS and PPS data were not updated ? May I know, how can we get the SPS and PPS info for the newly switched Representation segments from FFMPEG ?

    Thanks and Regards.

  • fate/vpx : make webm dash manifest tests depend on the WEBM_DASH_MANIFEST demuxer

    29 août 2014, par Michael Niedermayer
    fate/vpx : make webm dash manifest tests depend on the WEBM_DASH_MANIFEST demuxer

    Found-by : James Almer <jamrial@gmail.com>
    
Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
    • [DH] tests/fate/vpx.mak

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