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Autres articles (61)

  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

  • Creating farms of unique websites

    13 avril 2011, par

    MediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
    This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...)

  • Les formats acceptés

    28 janvier 2010, par

    Les commandes suivantes permettent d’avoir des informations sur les formats et codecs gérés par l’installation local de ffmpeg :
    ffmpeg -codecs ffmpeg -formats
    Les format videos acceptés en entrée
    Cette liste est non exhaustive, elle met en exergue les principaux formats utilisés : h264 : H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 m4v : raw MPEG-4 video format flv : Flash Video (FLV) / Sorenson Spark / Sorenson H.263 Theora wmv :
    Les formats vidéos de sortie possibles
    Dans un premier temps on (...)

Sur d’autres sites (8973)

  • Thread count option in FFmpeg for FASTEST conversion to h264 ?

    5 septembre 2013, par Saptarshi Biswas

    I need to maximize speed while converting videos using FFmpeg to h264

    • Any input format of source videos
    • User's machine can have any number of cores
    • Power and memory consumption are non-issues

    Of course, there are a whole bunch of options that can be tweaked but this question is particularly about choosing the best -thread <count></count> option. I am trying to find an ideal thread count as a function of

    • no. of cores
    • input video format
    • h264-friendly values maybe ?
    • anything else missed above ?

    I am aware the default -thread 0 follows one-thread-per-core approach which is supposed to be optimal. But I am not sure if this is time or space-optimized. Also, on certain testcases, I've seen more threads (say 4 threads on my dual core test machine) finishes quicker than the default.

    Any other direction, say configure options w.r.t. threads, worth pursuing ?

  • ffmpeg-Create the video slideshow with effect ? [on hold]

    1er octobre 2013, par Lily Shukla

    I want to make video slide show with image using the ffmpeg.
    i try the code

    Using a single image as an input

    If you want to create a video out of just one image, this will do (output video duration is set to 30 seconds with -t 30) :

    ffmpeg -loop 1 -i img.png -c:v libx264 -t 30 -pix_fmt yuv420p out.mp4

    but sir it only showing the picture without any effect.
    i want to add effect like we see in power point.
    plz sie how to do it
    ffmpeg-Create the video slideshow with effect ???

  • Adding a filter and title cards to user uploaded videos [on hold]

    5 septembre 2013, par Django Reinhardt

    A client is interested in applying a Sepia style filter, as well as title cards, to user-uploaded videos on their website. This would obviously be automated on their webserver, and it seems ffmpeg is a good way to make this happen.

    Unfortunately, from what I've read, such processing would require a lot of webserver CPU power — far more than the average webserver usually has. How can I practically perform these calculations on a website ?

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