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Autres articles (23)

  • 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

  • Monitoring de fermes de MediaSPIP (et de SPIP tant qu’à faire)

    31 mai 2013, par

    Lorsque l’on gère plusieurs (voir plusieurs dizaines) de MediaSPIP sur la même installation, il peut être très pratique d’obtenir d’un coup d’oeil certaines informations.
    Cet article a pour but de documenter les scripts de monitoring Munin développés avec l’aide d’Infini.
    Ces scripts sont installés automatiquement par le script d’installation automatique si une installation de munin est détectée.
    Description des scripts
    Trois scripts Munin ont été développés :
    1. mediaspip_medias
    Un script de (...)

  • Automated installation script of MediaSPIP

    25 avril 2011, par

    To overcome the difficulties mainly due to the installation of server side software dependencies, an "all-in-one" installation script written in bash was created to facilitate this step on a server with a compatible Linux distribution.
    You must have access to your server via SSH and a root account to use it, which will install the dependencies. Contact your provider if you do not have that.
    The documentation of the use of this installation script is available here.
    The code of this (...)

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    random_seed : Support using CryptGenRandom on windows

  • How to get the real, actual duration of an MP3 file (VBR or CBR) server-side

    25 septembre 2016, par SquareCat

    I used to calculate the duration of MP3 files server-side using ffmpeg - which seemed to work fine. Today i discovered that some of the calculations were wrong. Somehow, for some reason, ffmpeg will miscalculate the duration and it seems to happen with variable bit rate mp3 files only.

    When testing this locally, i noticed that ffmpeg printed two extra lines in green.

    Command used :

    ffmpeg -i song_9747c077aef8.mp3

    ffmpeg says :

    [mp3 @ 0x102052600] max_analyze_duration 5000000 reached at 5015510
    
[mp3 @ 0x102052600] Estimating duration from bitrate, this may be inaccurate

    After a nice, warm google session, i discovered some posts on this, but no solution was found.

    I then tried to increase the maximum duration :

    ffmpeg -analyzeduration 999999999 -i song_9747c077aef8.mp3

    After this, ffmpeg returned only the second line :

    [mp3 @ 0x102052600] Estimating duration from bitrate, this may be inaccurate

    But in either case, the calculated duration was just plain wrong. Comparing it to VLC i noticed that there the duration is correct.

    After more research i stumbled over mp3info - which i installed and used.

    mp3info -p "%S" song_9747c077aef8.mp3

    mp3info then returned the CORRECT duration, but only as an integer, which i cannot use as i need a more accurate number here. The reason for this was explained in a comment below, by user blahdiblah - mp3info is simply pulling ID3 info from the file and not actually performing any calculations.

    I also tried using mplayer to retrieve the duration, but just as ffmpeg, mplayer is returning the wrong value.

  • ffmpeg SDP file for Darwin Streaming Server

    10 septembre 2012, par SP Sandhu

    I am making a streaming server to view live video feed of my webcam on my mobile device.

    I considered using ffmpeg , VLC and DSS and made the following setup that worked somewhat, though the frames were skipped :-

    video4linux2 > ffserver > VLC transcoding > DSS

    (RAW to ffserver) > (outputs to SDP link) > (SDP link to SDP file) > (SDP file to live streaming to mobile)

    Later, on testing VLC i found to be very inefficient and slow on my Netbook(Intel Atom N480) as it skips lot of frames.

    DSS can stream a SDP file from its /usr/local/movies(default).

    And at the same time, ffmpeg's ffserver module can stream live feed to SDP link(not SDP file).

    My requirement is that i need to create SDP file in DSS's /usr/local/movies directory so as to pass this DSS for streaming.

    So, how to create a sdp file from ffmpeg or how to create SDP file from SDP link (without using VLC's trans-coding).

    How to do that ?

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