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  • Contribute to a better visual interface

    13 avril 2011

    MediaSPIP is based on a system of themes and templates. Templates define the placement of information on the page, and can be adapted to a wide range of uses. Themes define the overall graphic appearance of the site.
    Anyone can submit a new graphic theme or template and make it available to the MediaSPIP community.

  • Encoding and processing into web-friendly formats

    13 avril 2011, par

    MediaSPIP automatically converts uploaded files to internet-compatible formats.
    Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
    Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
    Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
    All uploaded files are stored online in their original format, so you can (...)

  • 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" ;

Sur d’autres sites (5575)

  • How to plot animated time series in R ?

    28 août 2016, par pOrlando

    I am trying use the ’animation’ package in R to plot an animated time series.

    My dataset consists of a time vector and a value vector, each with 1800 rows.

    I keep getting an error message after running the loop which reads :

    Error in jpeg(gname[i]) : unable to start jpeg() device
    
In addition: Warning messages:
    
1: In jpeg(gname[i]) : unable to open file 'g11:30:00.jpg' for writing
    
2: In jpeg(gname[i]) : opening device failed

    Here’s the source code

    timemax<-1800
    
setwd("~/Documents/Animation/")
    
graphdata<-read.csv("filling_line_data_construction_v2.csv")
    
attach(graphdata)
    
gname<-paste("g",time, ".jpg", sep="")
    
for (i in 1:timemax){
    
    jpeg(gname[i])
    
    plot(time[1],value[1],type="l",ylim=c(0,35), xlim=c(0,100),
    
      ylim = c(0, 35),ylab = "", xlab="time")
    
    lines(time[1:i],value[1:i])
    
    dev.off(dev.cur())
    
}

    The end goal is to string together these 1800 plots as a stop animation video by calling the ffmpeg shell :

    shell("C:/ffmpeg/bin/ffmpeg.exe -report -i g%d.jpg -b:v 2048k fillin_lineR.mpg",mustWork=FALSE)

    This is code that I’ve been trying to adapt from http://www.animatedgraphs.co.uk/LondonR.html#slide-30, but this example uses a .tif file instead of .jpg, and my computer gives me 1800 error messages when trying to make a video from .tif files...

    Thanks in advance !

  • How to cut using ffmpeg using start and end time not duration ?

    16 octobre 2020, par Joan Venge

    I have seen many links that shows specifying the start time and duration but I want to specify the start and end time. From example from 5 min mark to 12 min mark. How to do this using ffmpeg ?

    


  • mp4 video plays from beginning while seeking to another time [on hold]

    13 août 2013, par user2649860

    i am using lighttpd and h264 with jwplayer. I am trying to stream the MP4 video.

    My problem is that the MP4 video downloads whole file before playing and i have another problem i.e. when i seek to another time/point the video plays from beginning and it plays after the end time also.

    i have already tried the ffmpeg tools to create the h264 video and qt-faststart.exe tool to fix the video index problem of the video. But it does not work.

    Any solution ?? THanks in advanced

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