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Médias (1)
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Publier une image simplement
13 avril 2011, par ,
Mis à jour : Février 2012
Langue : français
Type : Video
Autres articles (28)
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Les autorisations surchargées par les plugins
27 avril 2010, parMediaspip core
autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs -
Publier sur MédiaSpip
13 juin 2013Puis-je poster des contenus à partir d’une tablette Ipad ?
Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir -
Support de tous types de médias
10 avril 2011Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...) ; audio (MP3, Ogg, Wav et autres...) ; vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...) ; contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google Earth) (...)
Sur d’autres sites (5010)
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MPEG-DASH create initialization segment
3 novembre 2014, par staticI’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/%03dThe 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: 0How can i create the initialization segment for the generated segments ? I can’t seem to be able to get it to work.
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qpel_template : Restore author attribution
30 mai 2014, par Michael Niedermayerqpel_template : Restore author attribution
See : 368f50359eb328b0b9d67451f56fda20b3255f9a
See : 59fe111e8122acc614ace5618e1a4ba7416e9875
See :
similarity index 98%
rename from libavcodec/dsputil_template.c
rename to libavcodec/qpel_template.c
index 95d966e..500c75b 100644
— - a/libavcodec/dsputil_template.c
+++ b/libavcodec/qpel_template.c
@@ -1,9 +1,5 @@
/** DSP utils
* Copyright (c) 2000, 2001 Fabrice Bellard
* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
*
* gmc & q-pel & 32/64 bit based MC by Michael Niedermayer <michaelni@gmx.at>
+ * quarterpel DSP function templates
*
* This file is part of FFmpeg.
*Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
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avcodec/x86/qpeldsp_init : Restore author attribution
30 mai 2014, par Michael Niedermayeravcodec/x86/qpeldsp_init : Restore author attribution
See : 368f50359eb328b0b9d67451f56fda20b3255f9a
See : 44eb49512888143905860af2de2932ab002cdbf7, and many others
See :
similarity index 83%
copy from libavcodec/x86/dsputil_init.c
copy to libavcodec/x86/qpeldsp_init.c
index ebbf97f..8f296a1 100644
— - a/libavcodec/x86/dsputil_init.c
+++ b/libavcodec/x86/qpeldsp_init.c
@@ -1,6 +1,5 @@
/** Copyright (c) 2000, 2001 Fabrice Bellard
* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
+ * quarterpel DSP functions
*
* This file is part of FFmpeg.
*Signed-off-by : Michael Niedermayer <michaelni@gmx.at>