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Autres articles (98)

  • Personnaliser les catégories

    21 juin 2013, par

    Formulaire de création d’une catégorie
    Pour ceux qui connaissent bien SPIP, une catégorie peut être assimilée à une rubrique.
    Dans le cas d’un document de type catégorie, les champs proposés par défaut sont : Texte
    On peut modifier ce formulaire dans la partie :
    Administration > Configuration des masques de formulaire.
    Dans le cas d’un document de type média, les champs non affichés par défaut sont : Descriptif rapide
    Par ailleurs, c’est dans cette partie configuration qu’on peut indiquer le (...)

  • 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 (...)

  • 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 (...)

Sur d’autres sites (9452)

  • Hot to copy frame data from FFmpegSource2 (FFMS2) FFMS_Frame struct to OpenCV Mat ?

    4 octobre 2013, par Yashil

    I'm trying to read video file using FFmpegSource2 (FFMS2) and then process frames using OpenCV. What is the proper and efficient way to copy frame data from a FFMS_Frame struct returned by FFMS_GetFrame function to an OpenCV Mat ?

    Thank you very much in advance.

  • FFmpeg : How to change tempo dynamically

    25 octobre 2018, par Ankush

    I am working on an android project in which I need to change the tempo of an mp3 (50 seconds audio) file dynamically as shown :

          Time            |    Tempo
    
 ----------------------------------------------
    
      0-4             |     1.0    
    
                      |    
    
      4-8             | change form 1.0 to 0.5 
    
                      |
    
      8-12            |     0.5
    
                      |
    
      12-16           | change from 0.5 to 1
    
                      |
    
      16-20           |     1
    
                      |
    
      20-24           | change from 1 to 1.5
    
                      |
    
      24-28           |     1.5
    
                      |
    
      28-32           | change from 1.5 to 1
    
                      |
    
      32-36           |     1
    
                      |
    
      36-40           | change from 1 to 1.5
    
                      |
    
      40-44           |     1.5
    
                      |
    
      44-48           | change from 1.5 to 1
    
                      |
    
      48-50           |     1

    I had searched and found that I can use atempo for this. But it changes the whole audio tempo. I think that I can split the audio and apply the effect but it also not work for this type of dynamic task. Please help me to find the solution. Thank you in advance :)

  • Scaling seems to crop edges of video

    7 septembre 2020, par Jao

    I'm doing some automation with FFmpeg and I need to be able to scale up and down videos. So I tried using the scale filter. No issue when I'm scaling up but when I'm scaling down I'm losing a few pixels from the bottom of the video and I must keep everything.

    


    Here is an example :

    


    $ ffmpeg.exe -i video.avi -vf scale=1536:644 video_resized.avi


    


    Here, video.avi is 2048x858.
I tried a lot of parameters, algorithms and flags but nothing seems to "fix" it. Maybe it is normal and I'm not understanding correctly how scaling works but I need to resize without loss of edges.
Thanks in advance

    


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