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Autres articles (20)

  • Websites made ​​with MediaSPIP

    2 mai 2011, par

    This page lists some websites based on MediaSPIP.

  • 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" (...)

  • 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 (5381)

  • FFMPEG creating video which have blinking opacity overlay

    13 juillet 2020, par Nikhil Solanki

    I am creating video which has an overlay of black color which is continuously changing opacity from 0.0 to 1.0(which means blinking). So, I am setting color as input and set it with blend=all_mode='overlay':all_opacity=0.5 full command :

    


    ffmpeg -i combine2.mp4 -loop 1 -i image1.png -i song.mp3 -f lavfi -i "color=black:s=540x960" -t 20 -filter_complex "[0]split=2[color][alpha]; [color]crop=iw/2:ih:0:0[color]; 
[alpha]crop=iw/2:ih:iw/2:ih[alpha]; [color][alpha]alphamerge[v1];
[1]scale=540:960, setsar=1[v2];
[3]scale=540:960, format=yuv420p, loop=-1:size=2048, fade=t=out:st=1:d=1[b];
[v2][b]blend=all_mode='overlay':all_opacity=0.5[out];
[2]showfreqs=s=540x50:mode=line:ascale=log:colors=red:win_size=540[v3];
[out][v3] overlay=main_w-overlay_w:main_h-overlay_h-10, trim=0:20[v4];
[v4][v1] overlay=1" output_video2.mp4 -y


    


    Using this command I am trying looping opacity but, its not work. Also fade=t=out is useless here ! So, what to do for blinking the layer black with opacity ?

    


  • FFMPEG : How do I set the transparency color of an animated GIF for overlaying on a video ?

    8 novembre 2017, par Jonathan Leger

    I have a video clip that I’ve converted to an animated GIF with ffmpeg. I would like to overlay that animated GIF onto a video clip. The problem is I can’t figure out how to set the transparency color of the GIF. I want the solid black background of the GIF to be transparent.

    ffmpeg -i video.mp4 output.gif

    That’s what I’m doing to created the animated GIF. Again, looks great. I just need to add black (#000000) as the transparent color of the GIF.

    Thanks !

  • ffmpeg - Text fontcolor is changed (faded) because of alpha(I think). Is there any possibility to avoid this behavior ?

    13 mai 2019, par Bedrule Paul

    I am using following command

        ffmpeg -i ~/Desktop/input.mp4 -filter_complex  "color=black:100x100[c];\
    
[c][0]scale2ref[ct][mv]; \
    
[ct]setsar=1,split=1[t1]; \
    
[t1]drawtext=text='Test Text 1':fontsize=36:fontcolor=#13348b\
    
,split[text1][alpha1]; \
    
[text1][alpha1]alphamerge,rotate=30:ow=rotw(30)\
    
:oh=roth(30):c=black@0[txta1]; \
    
[mv][txta1]overlay=x='min(0,-H*sin(30))+500':\
    
y='min(0,W*sin(30))+350':shortest=1" \
    
~/Desktop/result.mp4 -y

    I think alpha is the problem, but I don’t know how to avoid it.

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