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Autres articles (94)

  • MediaSPIP 0.1 Beta version

    25 avril 2011, par

    MediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
    The zip file provided here only contains the sources of MediaSPIP in its standalone version.
    To get a working installation, you must manually install all-software dependencies on the server.
    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

  • Multilang : améliorer l’interface pour les blocs multilingues

    18 février 2011, par

    Multilang est un plugin supplémentaire qui n’est pas activé par défaut lors de l’initialisation de MediaSPIP.
    Après son activation, une préconfiguration est mise en place automatiquement par MediaSPIP init permettant à la nouvelle fonctionnalité d’être automatiquement opérationnelle. Il n’est donc pas obligatoire de passer par une étape de configuration pour cela.

  • 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.

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    14 novembre 2014, par Anton Khirnov
    mov : export audio service type as side data
    • [DBH] libavformat/mov.c

  • lavc : support extracting audio service type from side data

    14 novembre 2014, par Anton Khirnov
    lavc : support extracting audio service type from side data
    • [DBH] libavcodec/utils.c

  • webM files shows green and purple effects on mobile

    11 octobre 2015, par Naveen Gamage

    I have converted several GIFs to webM files using ffmpeg on my Ubuntu 14.04 server.

    Heres the code I used for conversation.

    ffmpeg -i your_gif.gif -c:v libvpx -crf 12 -b:v 500K output.webm

    source https://gist.github.com/ndarville/10010916

    The problem is converted webM files shows perfectly fine on PCs but on my mobile it shows with green and purple shadows.

    PC

    pc

    Mobile

    mobile

    I tried changing -crf and -b:v values to their max but nothing happens.

    webM file : http://d1pnsuxwa0it39.cloudfront.net/uploads/comments/webm/4673555.webm

    edit :

    also I can see webM files on some other sites fine. I think this has to do something with the way I convert files.

    edit :

    I have tried another code I found on stackoverflow but still the same.

    ffmpeg -f gif -i infile.gif outfile.mp4

    EDIT :

    If anyone think this has something to do with the way I installed FFMPEG, I followed the steps on FFMPEG official docs.

    https://trac.ffmpeg.org/wiki/CompilationGuide/Ubuntu

    EDIT :

    Input file :

    http://d1pnsuxwa0it39.cloudfront.net/test/1.gif

    Output file :

    http://d1pnsuxwa0it39.cloudfront.net/test/output.webm

    FFMPEG CLI output

     /home/naveencg/bin/ffmpeg -i 1.gif -c:v libvpx -crf 12 -b:v 500K output.webm
    
ffmpeg version 2.5.git Copyright (c) 2000-2014 the FFmpeg developers
    
  built on Dec 31 2014 14:37:15 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
    
  configuration: --prefix=/home/naveencg/ffmpeg_build --extra-cflags=-I/home/naveencg/ffmpeg_build/include --extra-ldflags=-L/home/naveencg/ffmpeg_build/lib --bindir=/home/naveencg/bin --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree
    
  libavutil      54. 15.100 / 54. 15.100
    
  libavcodec     56. 19.100 / 56. 19.100
    
  libavformat    56. 16.102 / 56. 16.102
    
  libavdevice    56.  3.100 / 56.  3.100
    
  libavfilter     5.  6.100 /  5.  6.100
    
  libswscale      3.  1.101 /  3.  1.101
    
  libswresample   1.  1.100 /  1.  1.100
    
  libpostproc    53.  3.100 / 53.  3.100
    
Input #0, gif, from '1.gif':
    
  Duration: N/A, bitrate: N/A
    
    Stream #0:0: Video: gif, bgra, 350x169, 25 fps, 25 tbr, 100 tbn, 100 tbc
    
[libvpx @ 0x1e2bf60] v1.3.0
    
Output #0, webm, to 'output.webm':
    
  Metadata:
    
    encoder         : Lavf56.16.102
    
    Stream #0:0: Video: vp8 (libvpx), yuva420p, 350x169, q=-1--1, 500 kb/s, 25 fps, 1k tbn, 25 tbc
    
    Metadata:
    
      encoder         : Lavc56.19.100 libvpx
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (gif (native) -> vp8 (libvpx))
    
Press [q] to stop, [?] for help
    
frame=   21 fps=0.0 q=0.0 size=      58kB time=00:00:00.84 bitrate= 569.7kbits/sframe=   44 fps= 41 q=0.0 size=     110kB time=00:00:01.76 bitrate= 512.4kbits/sframe=   62 fps= 39 q=0.0 size=     153kB time=00:00:02.48 bitrate= 505.9kbits/sframe=   84 fps= 40 q=0.0 size=     210kB time=00:00:03.36 bitrate= 510.8kbits/sframe=   88 fps= 41 q=0.0 Lsize=     218kB time=00:00:03.52 bitrate= 508.3kbits/s
    
video:216kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.971527%

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