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  • 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 (...)

  • ANNEXE : Les plugins utilisés spécifiquement pour la ferme

    5 mars 2010, par

    Le site central/maître de la ferme a besoin d’utiliser plusieurs plugins supplémentaires vis à vis des canaux pour son bon fonctionnement. le plugin Gestion de la mutualisation ; le plugin inscription3 pour gérer les inscriptions et les demandes de création d’instance de mutualisation dès l’inscription des utilisateurs ; le plugin verifier qui fournit une API de vérification des champs (utilisé par inscription3) ; le plugin champs extras v2 nécessité par inscription3 (...)

  • Problèmes fréquents

    10 mars 2010, par

    PHP et safe_mode activé
    Une des principales sources de problèmes relève de la configuration de PHP et notamment de l’activation du safe_mode
    La solution consiterait à soit désactiver le safe_mode soit placer le script dans un répertoire accessible par apache pour le site

Sur d’autres sites (3047)

  • Losslessly convert from RGBA rawvideo to H.264

    11 décembre 2017, par J''

    I am creating a tool that generates frames of RGBA video and pipes it to ffmpeg to create an .mp4 video. Here is the command that I give ffmpeg :

    ffmpeg -y -f rawvideo -vcodec rawvideo -s 960x540 -pix_fmt rgba -r 60 -i - 
    
-an -c:v libx264 -pix_fmt yuv420p -b:v 995328k vigeo_demo.mp4

    However, the quality is very, very, poor. The video consists of around 2-px wide lines being drawn across the screen at various angles. The lines are very blurry and blocky. What could be the cause of this and how do I fix it ?

    Things I’ve tried :

    • -q:v 0
    • crf 1 (crf 0 gives me an error)

  • Revision c5443fc881 : Fix decoder mismatch in sub-pixel SSSE3 intrinsic filters In 8-tap filtering, t

    23 mai 2014, par Yunqing Wang

    Changed Paths :
     Modify /vp9/common/x86/vp9_asm_stubs.c


     Modify /vp9/common/x86/vp9_subpixel_8t_intrin_ssse3.c



    Fix decoder mismatch in sub-pixel SSSE3 intrinsic filters

    In 8-tap filtering, to guarantee the intermediate results fit in
    16 bits, the order of accumulating the products needs to be done
    correctly, and the largest product should be added last. This
    patch fixed the problem using the method in commit "Correct ssse3
    8/16-pixel wide sub-pixel filter calculation".

    Change-Id : I79d0ad60c057b15011ece84cda9648eee0809423

  • FFmpeg Negative Duration [migrated]

    22 septembre 2014, par filby

    i have a large number of small videos (parts of a larger) of the form :

    Metadata:
    
major_brand     : isom
    
minor_version   : 512
    
compatible_brands: isomiso2avc1mp41
    
encoder         : Lavf55.43.100
    
Duration: 00:00:05.53, start: -1.831497, bitrate: 3355 kb/s
    
Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 4760 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc (default)
    
Metadata:
    
  handler_name    : VideoHandler
    
Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 157 kb/s (default)
    
Metadata:
    
  handler_name    : SoundHandler

    I want to completely discard the negative start, the 1.83 seconds, and keep only the 3.67 seconds in the positive ’axis’.

    I cut the videos with the correct duration however i believe due to some sync i did in sound (in the original), resulted in me having a video of 5.53 second, of which 1.83 is audio only, and the last 3.67 seconds are the ones i want to keep (and the ones i did cut).

    In a video player i can watch the 3.67 seconds i want to however if i extract the audio i get +1.83 seconds of audio at start from the original video (from which i cut the parts) which i didnt intend to cut. What can i do ;

    P.S.
    Example of the command i used to cut the part :

    ffmpeg -ss 818 -i input -t 3.67 -codec:v libx264 -profile:v high -preset slow -b:v 5000k -maxrate 5000k -threads 0 -codec:a copy output

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