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Médias (1)

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  • Emballe médias : à quoi cela sert ?

    4 février 2011, par

    Ce plugin vise à gérer des sites de mise en ligne de documents de tous types.
    Il crée des "médias", à savoir : un "média" est un article au sens SPIP créé automatiquement lors du téléversement d’un document qu’il soit audio, vidéo, image ou textuel ; un seul document ne peut être lié à un article dit "média" ;

  • Installation en mode ferme

    4 février 2011, par

    Le mode ferme permet d’héberger plusieurs sites de type MediaSPIP en n’installant qu’une seule fois son noyau fonctionnel.
    C’est la méthode que nous utilisons sur cette même plateforme.
    L’utilisation en mode ferme nécessite de connaïtre un peu le mécanisme de SPIP contrairement à la version standalone qui ne nécessite pas réellement de connaissances spécifique puisque l’espace privé habituel de SPIP n’est plus utilisé.
    Dans un premier temps, vous devez avoir installé les mêmes fichiers que l’installation (...)

  • 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 (4202)

  • FFMPEG SCREENSHOT GENERATE ERROR : No such filter : 'tile' [duplicate]

    23 mai 2013, par itseasy21

    This question is an exact duplicate of :

    i have been trying on making multiple screenshots from a video file using ffmpeg and i succeed too in command but the only problem is while executing that i am getting this error :

    No such filter: 'tile'
    
Error opening filters!

    The command i execute is :

    ffmpeg -ss 00:00:10 -i './tmp/try.avi' -vcodec mjpeg -vframes 1 -vf 'select=not(mod(n\,1000)),scale=320:240,tile=2x3' './tmp/try.jpg'

    The output i get is :

    xxxxx@xxxx.com [~/public_html/xxxx]# ffmpeg -ss 00:00:10 -i './tmp/try.avi' -vcodec mjpeg -vframes 1 -vf 'select=not(mod(n\,1000)),scale=320:240,tile=2x3' './tmp/try.jpg'
    

    
ffmpeg version 0.7.11, Copyright (c) 2000-2011 the FFmpeg developers
    
  built on Mar 10 2012 18:07:20 with gcc 4.4.6 20110731 (Red Hat 4.4.6-3)
    
  configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --mandir=/usr/share/man --enable-shared --enable-runtime-cpudetect --enable-gpl --enable-version3 --enable-postproc --enable-avfilter --enable-pthreads --enable-x11grab --enable-vdpau --disable-avisynth --enable-frei0r --enable-libopencv --enable-libdc1394 --enable-libdirac --enable-libgsm --enable-libmp3lame --enable-libnut --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --extra-cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -fPIC' --disable-stripping
    
  libavutil    50. 43. 0 / 50. 43. 0
    
  libavcodec   52.123. 0 / 52.123. 0
    
  libavformat  52.111. 0 / 52.111. 0
    
  libavdevice  52.  5. 0 / 52.  5. 0
    
  libavfilter   1. 80. 0 /  1. 80. 0
    
  libswscale    0. 14. 1 /  0. 14. 1
    
  libpostproc  51.  2. 0 / 51.  2. 0
    

    
Seems stream 0 codec frame rate differs from container frame rate: 29.97 (30000/1001) -> 25.00 (25/1)
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from './tmp/try.avi':
    
  Metadata:
    
    major_brand     : 3gp4
    
    minor_version   : 512
    
    compatible_brands: isomiso23gp4
    
    creation_time   : 1970-01-01 00:00:00
    
  Duration: 00:09:24.82, start: 0.000000, bitrate: 118 kb/s
    
    Stream #0.0(und): Video: h263, yuv420p, 176x144 [PAR 12:11 DAR 4:3], 102 kb/s, 25 fps, 25 tbr, 25 tbn, 29.97 tbc
    
    Metadata:
    
      creation_time   : 1970-01-01 00:00:00
    
    Stream #0.1(und): Audio: amrnb, 8000 Hz, 1 channels, flt, 12 kb/s
    
    Metadata:
    
      creation_time   : 1970-01-01 00:00:00
    
Incompatible pixel format 'yuv420p' for codec 'mjpeg', auto-selecting format 'yuvj420p'
    
[buffer @ 0x1ad89a0] w:176 h:144 pixfmt:yuv420p tb:1/1000000 sar:12/11 sws_param:
    
No such filter: 'tile'
    
Error opening filters!

    any solution for this ????

  • MPEG DASH - do I need to have audio and video tracks as seperate source file for creating DASH package using mp4box

    10 juillet 2016, par Tarun

    I have one source mp4, I tried to create MPEG DASH package using mp4box by GPAC.
    I am able to play output MPD files in OSMO4 player by GPAC.

    However I am not able to play the same in DASH JS player @ http://dashif.org/reference/players/javascript/0.2.3/index.html

    When I try to play the mpd in it I get error "Error creating source buffer"

    I tried reading their MPD files, and I found that those guys are using audio and video as separate source track.

    Ques1) Does DASH specs states that audio and video tracks should be seprate source tracks ?

    Ques2) Please find below the MPD file created by me, Let me know if anybody thinks that there is a problem in it

    <mpd type="static" xmlns="urn:mpeg:DASH:schema:MPD:2011" profiles="urn:mpeg:dash:profile:full:2011" minbuffertime="PT1.5S" mediapresentationduration="PT0H2M31.63S">
    
<programinformation moreinformationurl="http://gpac.sourceforge.net">
    

    
</programinformation>
    
 <period start="PT0S" duration="PT0H2M31.63S">
    
  <adaptationset>
    
<contentcomponent contenttype="video"></contentcomponent>
    
<contentcomponent contenttype="audio" lang="und"></contentcomponent>
    
<segmenttemplate initialization="flight_init.mp4"></segmenttemplate>
    
<representation mimetype="video/mp4" codecs="avc1.64001f,mp4a.40.02" width="1280" height="720" samplerate="44100" numchannels="2" lang="und" startwithsap="1" bandwidth="3096320">
    
<segmenttemplate timescale="1000" duration="20164" media="flight_test_flight_3000$Number$.mp4" startnumber="1"></segmenttemplate>
    
</representation>
    
<representation mimetype="video/mp4" codecs="avc1.64001e,mp4a.40.02" width="640" height="360" samplerate="44100" numchannels="2" lang="und" startwithsap="1" bandwidth="1119428">
    
<segmenttemplate timescale="1000" duration="20099" media="flight_test_flight_1000$Number$.mp4" startnumber="1"></segmenttemplate>
    
</representation>
    
<representation mimetype="video/mp4" codecs="avc1.640014,mp4a.40.02" width="320" height="180" samplerate="44100" numchannels="2" lang="und" startwithsap="1" bandwidth="722208">
    
<segmenttemplate timescale="1000" duration="20164" media="flight_test_flight_600$Number$.mp4" startnumber="1"></segmenttemplate>
    
</representation>
    
</adaptationset>
    
</period> 
    
</mpd>

  • How to merge videos and add audio in a single command using ffmpeg ?

    9 janvier 2017, par harishkumar329

    I use the following commands to concat audio-less video files to one and add audio to it,

    To concat individual videos,

    ffmpeg  -i 1.mp4 -i 2.mp4 -i 3.mp4 -i 4.mp4 -i 5.mp4 -filter_complex 'concat=n=5:v=1:a=0[out]'  -map '[out]' -strict -2 -y video_withoutaudio.mp4

    To add audio,

    ffmpeg -i video_withoutaudio.mp4 -i audio.mp4 -c:v copy -c:a aac -strict -2 video_withaudio.mp4

    is there a way to combine these two commands to one ?

    My requirement is to optimise the commands as I have 1000+ commands taking a lot of time to complete, hoping combining these two to one will save some time.

    Thanks in advance !

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