Recherche avancée

Médias (91)

Autres articles (93)

  • Script d’installation automatique de MediaSPIP

    25 avril 2011, par

    Afin de palier aux difficultés d’installation dues principalement aux dépendances logicielles coté serveur, un script d’installation "tout en un" en bash a été créé afin de faciliter cette étape sur un serveur doté d’une distribution Linux compatible.
    Vous devez bénéficier d’un accès SSH à votre serveur et d’un compte "root" afin de l’utiliser, ce qui permettra d’installer les dépendances. Contactez votre hébergeur si vous ne disposez pas de cela.
    La documentation de l’utilisation du script d’installation (...)

  • Installation en mode standalone

    4 février 2011, par

    L’installation de la distribution MediaSPIP se fait en plusieurs étapes : la récupération des fichiers nécessaires. À ce moment là deux méthodes sont possibles : en installant l’archive ZIP contenant l’ensemble de la distribution ; via SVN en récupérant les sources de chaque modules séparément ; la préconfiguration ; l’installation définitive ;
    [mediaspip_zip]Installation de l’archive ZIP de MediaSPIP
    Ce mode d’installation est la méthode la plus simple afin d’installer l’ensemble de la distribution (...)

  • 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" (...)

Sur d’autres sites (8770)

  • Add watermark-overlay with -filter_complex to multiple outputs (dash)

    13 juillet 2020, par Werner

    I'm creating a set of files for DASH (without audio) with :

    


    ffmpeg -i "input.mov"
 -y
 -keyint_min 100 -g 100
 -sc_threshold 0
 -c:v libx264
 -pix_fmt yuv420p
 -map v:0 -s:0 320x180 -b:v:0 681.125k -maxrate:0 681.125k -bufsize:0 340.5625k
 -map v:0 -s:1 640x360 -b:v:1 2724.5k -maxrate:1 2724.5k -bufsize:1 1362.25k
 -map v:0 -s:2 1280x720 -b:v:2 5449k -maxrate:2 5449k -bufsize:2 2724.5k
 -map v:0 -s:3 1920x1080 -b:v:3 10898k -maxrate:3 10898k -bufsize:3 5449k
 -init_seg_name "myname_$RepresentationID$.$ext$"
 -media_seg_name "myname_$RepresentationID$-$Number%05d$.$ext$"
 -use_template 1 -use_timeline 1
 -seg_duration 4 -adaptation_sets "id=0,streams=v"
 -f dash "myname.mpd"


    


    Now I want to add a watermark. How is it done ? I tried something like :

    


    ffmpeg -i "input.mov"
 -y
 -i "watermark.png" // Added
 -filter_complex "overlay=24:960" // Added
 -keyint_min 100 -g 100
 -sc_threshold 0
 -c:v libx264
 -pix_fmt yuv420p
 -map v:0 -s:0 320x180 -b:v:0 681.125k -maxrate:0 681.125k -bufsize:0 340.5625k
 -map v:0 -s:1 640x360 -b:v:1 2724.5k -maxrate:1 2724.5k -bufsize:1 1362.25k
 -map v:0 -s:2 1280x720 -b:v:2 5449k -maxrate:2 5449k -bufsize:2 2724.5k
 -map v:0 -s:3 1920x1080 -b:v:3 10898k -maxrate:3 10898k -bufsize:3 5449k
 -init_seg_name "myname_$RepresentationID$.$ext$"
 -media_seg_name "myname_$RepresentationID$-$Number%05d$.$ext$"
 -use_template 1 -use_timeline 1
 -seg_duration 4 -adaptation_sets "id=0,streams=v"
 -f dash "myname.mpd"


    


    But this results in only getting the 180p-Version of the video. How can I still get all versions of the video with the overlay ?

    


    Added :
I tried as well :

    


    ffmpeg -i "input.mov"
 -y
 -i "watermark.png"
 -filter_complex "[0:v][1:v]overlay=24:960[out0][out1][out2][out3]"
 -keyint_min 100 -g 100
 -sc_threshold 0
 -c:v libx264
 -pix_fmt yuv420p
 -map "[out0]" -s:0 320x180 -b:v:0 681.125k -maxrate:0 681.125k -bufsize:0 340.5625k
 -map "[out1]" -s:1 640x360 -b:v:1 2724.5k -maxrate:1 2724.5k -bufsize:1 1362.25k
 -map "[out2]" -s:2 1280x720 -b:v:2 5449k -maxrate:2 5449k -bufsize:2 2724.5k
 -map "[out3]" -s:3 1920x1080 -b:v:3 10898k -maxrate:3 10898k -bufsize:3 5449k
 -init_seg_name "myname_$RepresentationID$.$ext$"
 -media_seg_name "myname_$RepresentationID$-$Number%05d$.$ext$"
 -use_template 1 -use_timeline 1
 -seg_duration 4 -adaptation_sets "id=0,streams=v"
 -f dash "myname.mpd"


    


    which results in the error :
No output pad can be associated to link label 'out1'.

    


  • movenc : use similar logic to DASH when writing bit rate to ISML

    28 septembre 2016, par Jan Ekström
    movenc : use similar logic to DASH when writing bit rate to ISML
    

    This way, in case of bit rate not being set, max_bitrate will be
    used instead. This enables, for example, re-using max_bitrate
    information from the input or doing transcoding with a rate
    control mode that is not bit rate based.

    Signed-off-by : Jan Ekström <jeebjp@gmail.com>
    Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>

    • [DH] libavformat/movenc.c
  • 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

    &lt;?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.