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Médias (3)

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Autres articles (58)

  • Publier sur MédiaSpip

    13 juin 2013

    Puis-je poster des contenus à partir d’une tablette Ipad ?
    Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir

  • Support de tous types de médias

    10 avril 2011

    Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...) ; audio (MP3, Ogg, Wav et autres...) ; vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...) ; contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google Earth) (...)

  • List of compatible distributions

    26 avril 2011, par

    The table below is the list of Linux distributions compatible with the automated installation script of MediaSPIP. Distribution nameVersion nameVersion number Debian Squeeze 6.x.x Debian Weezy 7.x.x Debian Jessie 8.x.x Ubuntu The Precise Pangolin 12.04 LTS Ubuntu The Trusty Tahr 14.04
    If you want to help us improve this list, you can provide us access to a machine whose distribution is not mentioned above or send the necessary fixes to add (...)

Sur d’autres sites (8934)

  • vc2enc : halve allocated table size, refactor and optimize quantization

    26 février 2016, par Rostislav Pehlivanov
    vc2enc : halve allocated table size, refactor and optimize quantization

    Since coefficients differ only in the last bit when writing to the
    
bitstream it was possible to remove the sign from the tables, thus
    
halving them. Also now all quantization is done in the unsigned domain
    
as the sign is completely separate, which gets rid of the need to do
    
quantization on 32 bit signed integers.
    

    Overall, this slightly speeds up the encoder depending on the machine.
    
The commit still generates bit-identical files as before the commit.
    

    Signed-off-by : Rostislav Pehlivanov <atomnuker@gmail.com>
    • [DH] libavcodec/vc2enc.c
    • [DH] libavcodec/vc2enc_dwt.h

  • How to concatenate multiple M4P videos with FFMPEG without audio sync issues ?

    16 mars 2016, par sb3k

    I have been trying to concatenate a number of MP4 clips (h264,aac) using the FFMPEG concat protocol documented here. The clips concatenate successfully, however there are multiple errors in the logs including :

    • Non-monotonous DTS in output stream
    • Past duration too large

    Additionally, it seems that the audio and video go slightly out of sync as more clips are added - though it is more noticeable on certain players (Quicktime & Chrome HTML5).

    Here is the code I am using, any tips would be appreciated !

    Convert each video to temp file

    ffmpeg -y -i <input file="file" /> -vcodec libx264 -acodec aac -f mpegts -bsf:v h264_mp4toannexb -mpegts_copyts 1 <temp file="file"></temp>

    Concat temp files

    ffmpeg -i concat  -map 0 -vcodec copy -aprofile aac_low -acodec aac -strict experimental -cutoff 15000 -vbsf aac_adtstoasc -b:a 32k <output file="file"></output>

  • avutil/random_seed : Add the runtime in cycles of the main loop to the entropy pool

    9 décembre 2015, par Michael Niedermayer
    avutil/random_seed : Add the runtime in cycles of the main loop to the entropy pool

    This should theoretically improve the randomness slightly
    

    Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
    • [DH] libavutil/random_seed.c

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