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Autres articles (13)

  • D’autres logiciels intéressants

    12 avril 2011, par

    On ne revendique pas d’être les seuls à faire ce que l’on fait ... et on ne revendique surtout pas d’être les meilleurs non plus ... Ce que l’on fait, on essaie juste de le faire bien, et de mieux en mieux...
    La liste suivante correspond à des logiciels qui tendent peu ou prou à faire comme MediaSPIP ou que MediaSPIP tente peu ou prou à faire pareil, peu importe ...
    On ne les connais pas, on ne les a pas essayé, mais vous pouvez peut être y jeter un coup d’oeil.
    Videopress
    Site Internet : (...)

  • 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 (...)

  • 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" ;

Sur d’autres sites (4329)

  • Fixing animation strobiness with FFMPEG

    26 juillet 2022, par MarcTheSpark

    I have an animation I'm making with Processing (it's of some numbers moving around on a black background), and I'm trying to avoid the strobe-like effect that happens when the numbers move fast.

    


    I think the way to go is to do some sort of blur of adjacent frames, and I was wondering how to accomplish this in FFMPEG. I could create a high FPS version of the animation (120 FPS or whatever), but how would I reduce this to a 30fps video with some sort of motion blur ?

    


    Sorry if I'm not explaining this well. I feel like the strobiness is a well-known issue with probably a well-known solution, but I'm having trouble finding it by searching online.

    


  • mov and mp4 files to play in browser

    5 novembre 2016, par Pranav Unde

    Currently I am playing with html5 video tag and database video files. I have couple of records in database that contains mov & mp4 files. HTML5 video tag supports mp4 but what about mov files ? I am trying to use external libraries but it not helps .. might be my implementation is wrong ...

    Can we get any library that converts mov to mp4 or browser that support ONLINE rather than saving it anywhere ... ?

    Also can I get any code snippet for handbrake source code implementation so that I can try for it.

  • Why after rendering with ffmpeg, file size did not decrease ?

    15 avril 2021, par ptrra

    PROBLEM : After rendering a certain video with ffmpeg file size increased from 4GB to 6GB.
    
ORIGINAL VIDEO : EE1.mkv
    
FFMPEG COMMAND : ffmpeg -i EE1.mkv -c:a copy -c:v libx264 -crf 23 -preset medium -profile:v high out.mp4
    
QUESTIONS : Why did the file size increase ? What am I doing wrong ?

    


     !DETAILS !
    
After a few years I made about 30 gaming videos (130GB) and with the current covid-19 situation I started recording my online classes (about 40 videos or 150GB). Now because I'm lacking space on my 1TB external HDD I started getting into ffmpeg. Before I was only using obs-studio and not good parameters for recording.

    


    I was using CBR mode for recording, either 5000KB or 15000KB bit rate with varying x264 presets and profiles because I was also experimenting with them. Usually superfast preset with high profile. So I wanted to convert all those videos with ffmpeg using CRF 23, medium preset and high profile. A note that when I'm recording with obs-studio it's set to record in matroska format (.mkv).

    


    When I was rendering my online classes videos with these settings I managed to achieve 10x better compression with the same quality. And when rendering my gaming videos I managed to achieve up to 3x better compression with the same quality. However there is this one video that when rendered with the same parameters the file size increases.

    


    The EE1.mkv should be recorded with CBR 15000KB bit rate, with superfast preset and high profile. Also the game that is recorded in this video is Empire Earth which needs around 8000KB for it to look good. Everything more than 8000KB is not needed.

    


    Thank you all for your help.

    


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