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Autres articles (20)

  • 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 (...)

  • 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 (...)

  • Other interesting software

    13 avril 2011, par

    We don’t claim to be the only ones doing what we do ... and especially not to assert claims to be the best either ... What we do, we just try to do it well and getting better ...
    The following list represents softwares that tend to be more or less as MediaSPIP or that MediaSPIP tries more or less to do the same, whatever ...
    We don’t know them, we didn’t try them, but you can take a peek.
    Videopress
    Website : http://videopress.com/
    License : GNU/GPL v2
    Source code : (...)

Sur d’autres sites (4970)

  • Using WebHDFS to play video over HTTP

    3 février 2015, par Qin.Yang

    I used ffmpeg + libx264 to convert file format as H264, then uploaded the file to Hadoop. I used WebHDFS to access the file by HTTP, but can not online play. If I download this file over HTTP, it can play by HTML5 video. My English is poor, hope you know what I mean.

  • Using WebHDFS to play video over HTTP

    3 février 2015, par Qin.Yang

    I used ffmpeg + libx264 to convert file format as H264, then uploaded the file to Hadoop. I used WebHDFS to access the file by HTTP, but can not online play. If I download this file over HTTP, it can play by HTML5 video. My English is poor, hope you know what I mean.

  • JPEG quality problems

    26 février 2020, par atokzz

    I am currently using C# to retrieve frames from a borescope (via the FFMPEG library). However, I came across a problem weeks ago and I can’t solve it.

    The images are returned in JPEG format (since the borescope stream is MJPEG).

    Some images come without quality problems, but others come with a strange line in the middle
    followed by random staining. (At the end of the question there is an example of a normal image and one with problems).

    Analyzing the structure of the files, I realized that there are some differences, but I don’t really understand JPEG’s binary structure very well, and I can’t tell what is corrupted.

    Getting to know what is corrupted in the image, which culminates in the quality problem, is very important to me because, through this, I can discard the frame using C#. However, without understanding this problem, I can’t even discard the frame, much less fix it.

    So, having the image without quality problems as a reference, what is the problem with the binary structure of the image with quality problems ?

    Examples :

    JPEG 1 : Image without quality problems

    Image’s preview (just to see the quality, do not download from here)

    JPEG 2 : Image with quality problems

    Image’s preview (just to see the quality, do not download from here)

    It’s possible to look into binary structure of images through online HEX editors like : Online hex editor, Hexed or Hex-works.

    Thank you for reading and have a nice day.

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