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  • 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

  • Emballe médias : à quoi cela sert ?

    4 février 2011, par

    Ce plugin vise à gérer des sites de mise en ligne de documents de tous types.
    Il crée des "médias", à savoir : un "média" est un article au sens SPIP créé automatiquement lors du téléversement d’un document qu’il soit audio, vidéo, image ou textuel ; un seul document ne peut être lié à un article dit "média" ;

  • 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 (...)

Sur d’autres sites (9289)

  • cutting multiple segments with ffmpeg [duplicate]

    13 juin 2018, par B Pulsart

    This question already has an answer here :

    So there is a 10 min long .mp4 and I have to cut it in 2 seconds long segments every 10 seconds, then concatenate all 2 sec segments together to get a 2 min long film.

    I manage to do that with a loop in python that subprocep ffmpeg, but it’s long and ugly (cut, cut cut... and then glue)

    Is it a way to do that with just a line in ffmpeg ?

    my code in python for cutting sequences :

    import subprocess# as sp
    

    
ffmpeg = file on disk # on Windows
    
film_in =  a file name
    

    
t_total = 10#min
    
t_sec = t_total*60
    

    
def c_cut(time) :
    
    cmd = [ffmpeg  , '-i' ,film_in ,'-b:v', '800k' ,'-ss', str(time) , '-t','2' , '-an', film_out]
    
    return cmd
    

    

    
for tps in range(0, t_sec, 10) :
    
    film_out = a file name unique for each segment
    
    command = c_cut(tps)
    
    subprocess.call(command)

  • ffmpeg combined video increaes duration

    4 septembre 2022, par Imants Gulbis

    I am splitting video file in scenes and then process them. After processing and combining them I gain a lot of extra seconds. Original duration 24:29 after combining 24:59.

    


    First I split video with this command

    


    ffmpeg -i test.mkv -f segment -c copy -map 0 -y $HOME/Encoding/SPLIT/OUTPUT-%07d.mkv


    


    And then I process each file encoding x264 to AV1 :

    


    ffmpeg -i $HOME/Encoding/SPLIT/OUTPUT-0000125.mkv -map 0:0 -pix_fmt yuv420p10le -strict -1 -f yuv4mpegpipe /tmp/fifo_stream

SvtAv1EncApp -i /tmp/fifo_stream --profile 0 --preset 6 --qp 35 --max-qp 63 --min-qp 1 --rc 0 --keyint 240 --input-depth 10 --crf 30 --rc 0 --passes 2 --film-grain 0 -b $HOME/Encoding/CONVERTED/OUTPUT-0000125.ivf


    


    and store information about every converted file in $HOME/Encoding/list.txt file

    


    Then I combine files :

    


    ffmpeg -f concat -safe 0 -i $HOME/Encoding/list.txt -y $HOME/Encoding/encoded.mp4


    


    result video gained extra 30 seconds. Someone knows what to do so that combined file duration will be same as original ?

    


  • avformat/segafilmenc - set keyframe bit correctly

    5 mai 2018, par Gyan Doshi
    avformat/segafilmenc - set keyframe bit correctly

    As per
    
https://web.archive.org/web/20020803104640/http://www.pcisys.net:80/~melanson/codecs/film-format.txt,
    

    the top bit of the info1 chunk is set as 1 for inter-coded frames and 0
    
otherwise.
    • [DH] libavformat/segafilmenc.c
    • [DH] libavformat/version.h

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