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  • 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 (...)

  • 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 (9405)

  • FFMPEG Add 2 watermarks (txt + png) to a video

    21 mai 2020, par razz

    I'm trying to add 2 watermarks to a video, one should be a .png file and the second some moving/scrolling text.

    



    Png = fixed at right bottom

    



    Text = Moving/scrolling from the top right to the top left. Starting at 50% of total video length (appear at 1:00 if total length is 2:00) and disappearing in 20 seconds.

    



    I already use a command to encode the video and add a logo at the right bottom but having trouble adding scrolling text at the same time.

    



    -i logo.png -filter_complex "overlay=main_w-overlay_w:main_h-overlay_h-4" -keyint_min 20 -vcodec libx264 -c:a copy -b:v 1500k -movflags +faststart


    


  • ffmpeg : Considers AVPixelFormat as Int ?

    16 mars 2014, par jamie_y

    I would like to use a function ff_load_image.

    program.c

    #include "../ffmpeg/libavfilter/lavfutils.h"
    

    
int main ()
    
{
    
  uint8_t* data;
    

    
  int linesize, width, height, log_ctx;
    

    
  int i = ff_load_image(&data, &linesize, &width, &height, AV_PIX_FMT_RGB24, "blue.jpg", &log_ctx);
    
}

    This compiles, but gives a warning.

    program.c: In function 'main':
    
program.c:11: warning: passing argument 5 of 'ff_load_image' makes pointer from integer without a cast
    
../ffmpeg/libavfilter/lavfutils.h:39: note: expected 'enum AVPixelFormat *' but argument is of type 'int'

    When I run the program, it segment faults. I can't think of any other way to specify a pixel format. Why would ffmpeg think AV_PIX_FMT_RGB8 is an integer ? It's obviously an AVPixelFormat.

  • ffmpeg doesn't always create wave picture

    17 février 2017, par Sean

    @LordNeckbeard and other ffmpeg experts,

    can you please help me with generating wave picture. the following command works perfectly on some videos and it doesn’t on other videos :

    ffmpeg  -i "input.mp4" -filter_complex "[0:a]aformat = channel_layouts = mono, compand = gain = -6, showwavespic = s = 1920x384: colors =red|blue[fg]; color = s = 1920x384: color =#444444, drawgrid = width = 38:height = 38:color =#555555@0.5[bg]; [bg][fg]overlay = format = rgb, drawbox = x = (iw - w) / 2:y = (ih - h) / 2:w = iw:h = 2:color =#000000@0.4" -vframes 1  "output.png"

    when working, it generates the following wave pic :
    working example

    on other videos, it shows the grid but it seems that the wave signal is hidden behind the grid

    wave hidden behind the grid

    Your help is greatly appreciated !

    Thank you,
    Sean.

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