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  • Publier sur MédiaSpip

    13 juin 2013

    Puis-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

  • Use, discuss, criticize

    13 avril 2011, par

    Talk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
    The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
    A discussion list is available for all exchanges between users.

  • 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 (...)

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  • How to programmatically adjust a folder of audio files so they are all about the same loudness ?

    6 mars 2016, par Biagio Arobba

    I have a website that collects audio recordings from visitors using Flash, I am using ffmpeg2theora to convert the files from FLV to OGG...because I am re-using the files for an HTML5 Web page (OGG is supported on Firefox and Chrome). But, some files are loud and some are really quiet.

    Is there a way to make all the files sound about the same loudness ? It’s OK if the quality is poorer for the quieter audio files, just as long as it’s easier to hear the message that someone has left.

  • RED5 1.0.2 recorded FLV convert to Mobile/HTML5 format with FFMPEG av out of sync

    14 août 2014, par Daew dawe

    I have problem with recorded video in Red5 v1.0.2 (i had issues with previous v1, it does not recorded any video, with 1.0.2 it works). When I record flv I want to convert it to some mp4. But I have problem with settings, because every time there is some issue with quality/audio sync. Can u please help me how to convert with ffmpeg (in future automatic process on server).

    Second problem is that in flash client buffer length is always 0, but in v0.8 it was filled and on end I waited until empty, here I’m not sure how long should I wait. I founded this url http://code.google.com/p/red5/issues/detail?id=312 where they said to wait until i get UnPublish.Success, but that event I got only after ns.close()

    My flash client record settings is (FP10) :

    video :

    • resolution = 640x360
    • fps = 30
    • keyframeinterval = 15
    • video quality = 90
    • bandwidth = 0

    audio :

    • microphone codec = SPEEX
    • encodeQuality = 9

    • silencelevel = 0

    • bufferTime = 15

    recorded video parameters in VLC (translated from czech to english) :

    video

    • Codec : Flash Video (FLV1)
    • Resolution : 640x360
    • format : Planar 4:2:0 YUV

    audio

    • codec : Speex Audio (spx )
    • frequency : 16000Hz
    • bits per sample : 16
    • data flow : 16 kb/s

    FFMEPG info about video :

     Metadata:
    
   server          : Red5 Server 1.0.2 Rev: 4616
    
   creationdate    : Mon Sep 02 23:17:08 CEST 2013
    
   canSeekToEnd    : true
    
 Duration: 00:00:33.24, start: 0.000000, bitrate: 645 kb/s
    
   Stream #0:0: Video: flv1, yuv420p, 640x360, 625 kb/s, 1k tbr, 1k tbn, 1k tbc
    

    
   Stream #0:1: Audio: speex, 16000 Hz, mono, s16, 16 kb/s

    bsplayer showing 25fps - but I recorded 30fps, I dont understand this so much.

    what I tried with ffmpeg (I’m ffmpeg newbie).

    First I recorded 33sec long video

    when I convert audio with command : ffmpeg -i test.flv -ar 44100 -ab 160k -ac 1 output.mp3 , then the audio have only 30sec

    I tried this commands, but no one with good solution

    ffmpeg -i test.flv -vcodec mpeg4 -acodec libvo_aacenc output.mp4
    

    
ffmpeg -i test.flv -acodec libvo_aacenc -aq 200 outputsss.mp4
    

    
ffmpeg -i test.flv -c:v libvpx -c:a libvorbis output.webm // here is sound synced good - but sound have repeating silence lags (every 1-2s)

    really thank you for your help, I’m fighting with conversion many days :(

  • Ffmpeg how to reduce video weight after convertation

    27 octobre 2013, par Dirk Swarz

    Im using this php code to convert from avi to mp4 :

    $ffmpeg_command = 'ffmpeg -i '.$convert_source.' -acodec libmp3lame -vcodec libx264 -s 1280x720 -ar 44100 -async 44100 -r 29.970 -ac 2 -qscale 5 '.$converted_file;

    and this is bad becose when i convert for example 1mb avi movie it converts and plays in flash player but it weights 11mb how can i reduce it ?

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