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  • Supporting all media types

    13 avril 2011, par

    Unlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)

  • Configurer la prise en compte des langues

    15 novembre 2010, par

    Accéder à la configuration et ajouter des langues prises en compte
    Afin de configurer la prise en compte de nouvelles langues, il est nécessaire de se rendre dans la partie "Administrer" du site.
    De là, dans le menu de navigation, vous pouvez accéder à une partie "Gestion des langues" permettant d’activer la prise en compte de nouvelles langues.
    Chaque nouvelle langue ajoutée reste désactivable tant qu’aucun objet n’est créé dans cette langue. Dans ce cas, elle devient grisée dans la configuration et (...)

  • Contribute to translation

    13 avril 2011

    You can help us to improve the language used in the software interface to make MediaSPIP more accessible and user-friendly. You can also translate the interface into any language that allows it to spread to new linguistic communities.
    To do this, we use the translation interface of SPIP where the all the language modules of MediaSPIP are available. Just subscribe to the mailing list and request further informantion on translation.
    MediaSPIP is currently available in French and English (...)

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  • FFmpeg error : ratecontrol_init : can't open stats file

    18 décembre 2015, par oldo.nicho

    I’ve setup an AWS EC2 instance running Ubuntu 14.04 and have installed FFmpeg so that I can compress and transcode video.

    I’m trying to do a two pass conversion with the following code :

    ffmpeg -i input-file.avi -codec:v libx264 -profile:v high -preset slow -b:v 500k -maxrate 500k -bufsize 1000k -vf scale=702:-1 -threads 0 -pass 1 -an -f mp4 ~/encoded/null

    and second pass :

    ffmpeg -i input-file.avi -codec:v libx264 -profile:v high -preset slow -b:v 500k -maxrate 500k -bufsize 1000k -vf scale=702:-1 -threads 0 -pass 2 -codec:a libfdk_aac -b:a 128k -f mp4 output-file.mp4

    However I get the following error :

    ffmpeg version N-77283-g91c2a33 Copyright (c) 2000-2015 the FFmpeg developers
    
  built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04)
    
  configuration: --prefix=/home/ubuntu/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/ubuntu/ffmpeg_build/include --extra-ldflags=-L/home/ubuntu/ffmpeg_build/lib --bindir=/home/ubuntu/bin --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libx264 --enable-nonfree
    
  libavutil      55. 11.100 / 55. 11.100
    
  libavcodec     57. 17.100 / 57. 17.100
    
  libavformat    57. 20.100 / 57. 20.100
    
  libavdevice    57.  0.100 / 57.  0.100
    
  libavfilter     6. 21.100 /  6. 21.100
    
  libswscale      4.  0.100 /  4.  0.100
    
  libswresample   2.  0.101 /  2.  0.101
    
  libpostproc    54.  0.100 / 54.  0.100
    
Input #0, avi, from 'input-file.avi':
    
  Duration: 01:18:05.29, start: 0.000000, bitrate: 2025 kb/s
    
    Stream #0:0: Video: mpeg4 (Simple Profile) (XVID / 0x44495658), yuv420p, 720x480 [SAR 1:1 DAR 3:2], 1789 kb/s, 29.97 fps, 29.97 tbr, 29.97 tbn, 29.97 tbc
    
    Stream #0:1: Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, stereo, fltp, 224 kb/s
    
[libx264 @ 0x1e04240] using SAR=1/1
    
[libx264 @ 0x1e04240] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX AVX2 FMA3 LZCNT BMI2
    
[libx264 @ 0x1e04240] ratecontrol_init: can't open stats file
    
Output #0, mp4, to '/home/ubuntu/encoded/null':
    
    Stream #0:0: Video: h264, none, q=2-31, 128 kb/s, SAR 1:1 DAR 0:0, 29.97 fps
    
    Metadata:
    
      encoder         : Lavc57.17.100 libx264
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (mpeg4 (native) -> h264 (libx264))
    
Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height

    The command as written above works fine on my local computer (running OSX). Would anyone have any suggestions as to how to fix this problem ?

  • ffplay : toggle full screen when double-clicking the video window with the left mouse...

    19 janvier 2016, par Vittorio Gambaletta (VittGam)
    ffplay : toggle full screen when double-clicking the video window with the left mouse button

    Now that the seek only happens with the right mouse button, it makes
    
sense to toggle full screen when double-clicking with the left mouse
    
button, like other video players do.
    

    Signed-off-by : Vittorio Gambaletta <ffmpeg-dev@vittgam.net>
    
Signed-off-by : Marton Balint <cus@passwd.hu>
    • [DH] Changelog
    • [DH] ffplay.c

  • Is it legal to have inconsistent frame rate in an mp4 (h.264/avc) video

    30 janvier 2016, par Dmitry Fink

    I am constructing a video from a content that doesn’t change at a constant rate (phone screen virtual display), in fact I receive frame only when there is such a change. Is it legal according to the standards to have inconsistent frame rate in a video ? For example have frames with PTS of 0s, 0.066s, 0.1333s, 0.2s and then the next frame at 20s, etc ?

    It seems some players (Chrome) are struggling playing it back correctly, when encountering such a time gap, it sometimes start showing frames from the beginning of the video instead. Should I replicate the last frame myself to maintain a constant frame rate ? Is there a way to instruct a codec (ffmpeg) to inject "skip frames" at a constant rate when such gaps are detected.

    Thanks

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