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  • Gestion des droits de création et d’édition des objets

    8 février 2011, par

    Par défaut, beaucoup de fonctionnalités sont limitées aux administrateurs mais restent configurables indépendamment pour modifier leur statut minimal d’utilisation notamment : la rédaction de contenus sur le site modifiables dans la gestion des templates de formulaires ; l’ajout de notes aux articles ; l’ajout de légendes et d’annotations sur les images ;

  • Keeping control of your media in your hands

    13 avril 2011, par

    The vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
    While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
    MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
    MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...)

  • Dépôt de média et thèmes par FTP

    31 mai 2013, par

    L’outil MédiaSPIP traite aussi les média transférés par la voie FTP. Si vous préférez déposer par cette voie, récupérez les identifiants d’accès vers votre site MédiaSPIP et utilisez votre client FTP favori.
    Vous trouverez dès le départ les dossiers suivants dans votre espace FTP : config/ : dossier de configuration du site IMG/ : dossier des média déjà traités et en ligne sur le site local/ : répertoire cache du site web themes/ : les thèmes ou les feuilles de style personnalisées tmp/ : dossier de travail (...)

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  • FFMPEG - Scale video filter not providing expected results

    11 novembre 2011, par dpassera

    Apologies if this question has been asked. I couldn't find it, but if it has, please let me know and I'll close this out.

    I'm attempting a simple scale of a video whose original dimensions are 480x360 and whose target dimensions are 400x300. The video starts as an FLV and eventually needs to end up as an MPEG. I'm using the following command line to do this :

    ffmpeg -i user.flv -vf "scale=400:300" user_scaled.mpg

    When I play the scaled video in MPEG Streamclip, the scale is correct and the video info shows that the dimensions are 400x300. However, when I play the scaled video in Quicktime, the video is scaled to 478x359. More importantly, FFMPEG, itself, treats the video as being 478x359, so any future commands (trimming, conversion, overlaying, etc) executed on it result in a video of 478x359.

    The initial workflow required an FLV to MPEG conversion, but I've tried this with several different in and out formats (FLV -> FLV, FLV -> MPEG, MPEG -> MPEG, etc) all with the same results. As long as I can end up with an MPEG, though, I can deal with however many steps and conversions it would take to get this scaling working.

    I'll paste the command-line output below, and a sample input video is also linked below, if you'd like it. Thank you very much for any help.

    http://www.monkeydriver.com/dpassera/stack_flv.zip

    Command-line output :

    ffmpeg -i user.flv -vf "scale=400:300" user_scaled.mpg
    

    
ffmpeg version 0.7-rc1, Copyright (c) 2000-2011 the FFmpeg developers
    
  built on May 21 2011 22:13:19 with gcc 4.1.2 20080704 (Red Hat 4.1.2-50)
    
  configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 
    
 --mandir=/usr/share/man --incdir=/usr/include --disable-avisynth
    
 --extra-cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions
    
 -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -fPIC'
    
 --enable-avfilter --enable-libdirac --enable-libgsm --enable-libmp3lame
    
 --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264
    
 --enable-gpl --enable-postproc --enable-pthreads --enable-shared
    
 --enable-swscale --enable-vdpau --enable-version3 --enable-x11grab
    
 --disable-yasm --enable-filters --enable-filter=movie
    

    
  libavutil    50. 40. 1 / 50. 40. 1
    
  libavcodec   52.120. 0 / 52.120. 0
    
  libavformat  52.108. 0 / 52.108. 0
    
  libavdevice  52.  4. 0 / 52.  4. 0
    
  libavfilter   1. 77. 0 /  1. 77. 0
    
  libswscale    0. 13. 0 /  0. 13. 0
    
  libpostproc  51.  2. 0 / 51.  2. 0
    

    
[flv @ 0x11dd3b30] Estimating duration from bitrate, this may be inaccurate
    
Input #0, flv, from 'user.flv':
    

    
  Metadata:
    
    duration        : 5
    
    videocodecid    : 2
    
    audiocodecid    : 6
    
    canSeekToEnd    : true
    
    createdby       : FMS 4.0
    
    creationdate    : Mon Oct 31 11:43:44 2011
    

    
  Duration: 00:00:04.62, start: 0.000000, bitrate: N/A
    
    Stream #0.0: Video: flv, yuv420p, 640x480, 1k tbr, 1k tbn, 1k tbc
    
    Stream #0.1: Audio: nellymoser, 44100 Hz, mono, s16
    

    
[buffer @ 0x11ddc950] w:640 h:480 pixfmt:yuv420p
    

    
[scale @ 0x11dda610] w:640 h:480 fmt:yuv420p -> w:400 h:300 fmt:yuv420p flags:0xa0000004
    

    
[mpeg @ 0x11dd6bd0] VBV buffer size not set, muxing may fail
    

    
Output #0, mpeg, to 'user_scaled.mpg':
    
  Metadata:
    
    duration        : 5
    
    videocodecid    : 2
    
    audiocodecid    : 6
    
    canSeekToEnd    : true
    
    createdby       : FMS 4.0
    
    creationdate    : Mon Oct 31 11:43:44 2011
    
    encoder         : Lavf52.108.0
    

    
    Stream #0.0: Video: mpeg1video, yuv420p, 400x300, q=2-31, 200 kb/s, 90k tbn, 60 tbc
    

    
    Stream #0.1: Audio: mp2, 44100 Hz, mono, s16, 64 kb/s
    

    
Stream mapping:
    
Stream #0.0 -> #0.0
    
Stream #0.1 -> #0.1
    

    
Press [q] to stop encoding
    
frame=  230 fps=  0 q=10.2 size=     366kB time=3.82 bitrate= 785.6kbits/s dup=175 drop=0 
    
frame=  267 fps=  0 q=10.7 Lsize=     412kB time=4.43 bitrate= 761.3kbits/s dup=203 drop=0    
    

    
video:370kB audio:36kB global headers:0kB muxing overhead 1.568959%

  • Increase maximum encoding video buffer size.

    14 janvier 2012, par Carl Eugen Hoyos

    Increase maximum encoding video buffer size.

  • ffmpeg c api for cutting video

    13 janvier 2012, par user1148080

    first thing sorry for my bad english, i'm making an android app that need to get part of a video, the idea is i need a method that get input a video file, start-time, end-time then cutting video from star-time to end-time and output to a new file, i get ffmpeg for android from http://bambuser.com/opensource and able to compile it, integrate with JNI, but now i dont know which ffmpeg's api to use for do the thing a need, any help, example are much appreciated.

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