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Autres articles (62)

  • Websites made ​​with MediaSPIP

    2 mai 2011, par

    This page lists some websites based on MediaSPIP.

  • Personnaliser en ajoutant son logo, sa bannière ou son image de fond

    5 septembre 2013, par

    Certains thèmes prennent en compte trois éléments de personnalisation : l’ajout d’un logo ; l’ajout d’une bannière l’ajout d’une image de fond ;

  • Creating farms of unique websites

    13 avril 2011, par

    MediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
    This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...)

Sur d’autres sites (13704)

  • colored TV-Noise with windows

    8 janvier 2024, par LookAndSee

    I have some question to the colored noise at image 2 of the following thread :

    


    Simulating TV noise

    


      

    • how can i get this in windows ? I like a random pattern consisting of red, green, blue, white and black points, like 255:0:0, 0:255:0, 0:0:255, 255:255:0, 0:0:0 and 255:255:255 - no pink, no orange, no cyan ... at the first step.

      • 


    


    but random in all 3 places always delievers (with ceil, floor or round) whole black, or whole white or bw-noise :-(
does it mean, the random(1) per point is 3 times the same in one computing-cycle ?

    


    Any suggestion ?

    


    This is what i tried :

    


    ffmpeg -y -f lavfi -i nullsrc=s=1280x720 -filter_complex "geq=r=(round(random(1)))*255:g=(round(random(1)))*255:b=(round(random(1)))*255;aevalsrc=-2+random(0)" -t 5 output.mkv


    


  • ffmpeg - how to overlay multiple rotated texts and video

    10 novembre 2017, par user2893270

    I have the command for ffmpeg in order to rotate one text and overlay it to my video, but how to do it if I have multiple texts to be rotated ?

    ffmpeg -i input1.mp4 -filter_complex \
    
"color=black:100x100[c]; \
    
[c][0]scale2ref[ct][mv]; \
    
[ct]setsar=1, \
    
drawtext=fontfile=../../public/fonts/Roboto-Regular-webfont.ttf: \
    
text='Test Text':fontsize=36:fontcolor=white,split[text][alpha]; \
    
[text][alpha]alphamerge,rotate=30:ow=rotw(30):oh=roth(30):c=black@0[txta]; \
    
[mv][txta]overlay=x='min(0,-H*sin(30))+100':y='min(0,W*sin(30))+50':shortest=1" \
    
output_video.mp4

  • Putting two videos next to each other, improving performance

    17 mai 2018, par Zurechtweiser

    I am using this command I put together with quite some effort to put two videos next to each other.

    ffmpeg -y -i i1.mov -i i2.mp4 -filter_complex

    [0:v]scale=1824:1026,pad=width=1920:height=1080:x=0:y=27:color=black,crop=1641:923:170:79,scale=1920:1080[vl] ;

    [1:v]scale=2016:1134,crop=1759:1080:48:27,pad=width=1920:height=1080:x=161:y=0:color=black,crop=1641:923:170:79,scale=1920:1080[vr] ;

    [vl][vr]hstack=shortest=1 -c:v libx264 -crf 23 -preset veryfast output

    It works, but it is not elegant.

    How to shorten it and make it more performant ?

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