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  • Encoding and processing into web-friendly formats

    13 avril 2011, par

    MediaSPIP automatically converts uploaded files to internet-compatible formats.
    Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
    Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
    Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
    All uploaded files are stored online in their original format, so you can (...)

  • 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 (...)

  • Gestion de la ferme

    2 mars 2010, par

    La ferme est gérée dans son ensemble par des "super admins".
    Certains réglages peuvent être fais afin de réguler les besoins des différents canaux.
    Dans un premier temps il utilise le plugin "Gestion de mutualisation"

Sur d’autres sites (8339)

  • ffmpeg : How to change video duration (slow-down or speed-up) to exact value ?

    2 février 2017, par Moo

    I have miltiple videos with different durations and need to always set it to be exactly 10 seconds.

    I know that I can use -filter:v "setpts=speed*duration" but is there any way to make a universal one-line function to convert any-duration video to 10 seconds video ?

  • Overlaying video with text - ffmpeg speed

    12 février 2017, par Sebadc

    I’m developing an app that has a functionality similar to Snapchat’s, in which you can add text to an existing video and save it on your phone.

    I got this to work using ffmpeg’s "-drawtext" filter. The problem is that I’m getting a noticable delay (20 seconds or so) when adding text to videos, even though they are not too big (around 10 seconds length).

    Can anyone point me in the right direction on how to reduce this delay ? Taking Snapchat as reference, they overlay high quality videos with text with little to no delay.

    I’ve read about extracting the video’s frames and overlaying them manually, but shouldn’t that take longer ?

    Thank you for your help.

  • How to optimize/speed up ffmpeg resizing

    16 février 2017, par ALM

    I am trying to quickly compress mp4 videos and wanted to know if there is a better way than I am currently using.

    ffmpeg -i orig.mp4 -preset ultrafast -vf scale=iw/5:-2 out.mp4

    This is currently being run for videos around 2-4 minutes long but I would like to get it as quick as possible. Are there other settings for ffmpeg I should use ?
    This is running on a i7 system with external GPU.

    Thank you

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