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Autres articles (39)

  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

  • Soumettre améliorations et plugins supplémentaires

    10 avril 2011

    Si vous avez développé une nouvelle extension permettant d’ajouter une ou plusieurs fonctionnalités utiles à MediaSPIP, faites le nous savoir et son intégration dans la distribution officielle sera envisagée.
    Vous pouvez utiliser la liste de discussion de développement afin de le faire savoir ou demander de l’aide quant à la réalisation de ce plugin. MediaSPIP étant basé sur SPIP, il est également possible d’utiliser le liste de discussion SPIP-zone de SPIP pour (...)

  • HTML5 audio and video support

    13 avril 2011, par

    MediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
    The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
    For older browsers the Flowplayer flash fallback is used.
    MediaSPIP allows for media playback on major mobile platforms with the above (...)

Sur d’autres sites (5548)

  • 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.

  • 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 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 ?

    


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