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    Utilité
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  • 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.
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  • MediaSPIP 0.1 Beta version

    25 avril 2011, par

    MediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
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Sur d’autres sites (8661)

  • 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.

  • qpel_template : Restore author attribution

    30 mai 2014, par Michael Niedermayer
    qpel_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>
    • [DH] libavcodec/qpel_template.c

  • avcodec/x86/qpeldsp_init : Restore author attribution

    30 mai 2014, par Michael Niedermayer
    avcodec/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>
    • [DH] libavcodec/x86/qpeldsp_init.c

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