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Autres articles (85)

  • 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 (...)

  • 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 (...)

  • Submit bugs and patches

    13 avril 2011

    Unfortunately a software is never perfect.
    If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
    If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
    You may also (...)

Sur d’autres sites (10684)

  • ffmpeg - how to set histogram size ?

    7 avril 2015, par Pedro Lobito

    I’m trying to add a histogram to a video using ffmpeg, I’m following this example but I’m having trouble setting the size of the histogram, this is code I’m using :

    ffmpeg -y -report -i input.mp4 -vf "split[a][b];[a]format=gray,histogram=mode=waveform:waveform_mode=column,vflip,split[c][d];[b]pad=iw:ih+256[padded];[c]geq=g=1:b=1[red];[d]geq=r=1:b=1,crop=in_w:220:0:16[mid];[red][mid]overlay=0:16[wave];[padded][wave]overlay=0:H-h"  output.mp4

    I’ve tried to play around with the pad and crop values without luck.
    How can I set the size of histogram to 100 pixels only ?

  • ffmpeg utility vs direct libav* capabilities

    15 avril 2015, par ransh

    I would like to ask some general question about ffmpeg utility.
    When it is documented in ffmpeg wiki’s :
    https://www.ffmpeg.org/general.html
    That it support some feature (for example jpeg2000), does it mean that only ffmpeg utility support this feature, or does it mean that using directly the libraries in the ffmpeg repository (through libav*, libavcodecand , libopenjpeg, and other external libraries which are part of ffmpeg) will also support this feature as well ?

    Thank you very much,

    Ran

  • Playing high-res video in node-webkit

    17 mars 2015, par fin

    Under node-webkit, it seems that the maximum resolution a video can be played is 2k

    Is there any way to change this limitation ?

    Another observation is, I have enabled mp3 and mp4 from this link. It takes Chrome’s ffmpeg lib to render the file. However, under Chrome I can play video width up to 4k, while node-webkit can only support 2K. So I’m guessing it’s not the ffmpeg lib that forces the limitation.

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