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  • Gestion générale des documents

    13 mai 2011, par

    MédiaSPIP ne modifie jamais le document original mis en ligne.
    Pour chaque document mis en ligne il effectue deux opérations successives : la création d’une version supplémentaire qui peut être facilement consultée en ligne tout en laissant l’original téléchargeable dans le cas où le document original ne peut être lu dans un navigateur Internet ; la récupération des métadonnées du document original pour illustrer textuellement le fichier ;
    Les tableaux ci-dessous expliquent ce que peut faire MédiaSPIP (...)

  • Des sites réalisés avec MediaSPIP

    2 mai 2011, par

    Cette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
    Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page.

  • 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 (8026)

  • Writing subtitles on a video on different time frames

    22 mars 2023, par sarveshsta

    I am trying to write subtitles on a video. The problem is , with cv2(opencv-python), I am unable to write text on different time frames , lets say for first two seconds I want "Hello", and for another 3 seconds the video will show "this is the introduction" and so on.

    


    My question is, how can I achieve this with opencv-python. The thing why I want to use cv2 only is it creates an object for that video and do not create a new file, and that is important for my project.

    


    If you guys have any idea how we can write subtitles on a video without creating another file, please do let me know.

    


    I also tried ffmpeg it worked absolutely fine for me and I used a .srt file for that, but again it was creating a new file and same happened with moviepy library so in any case if you could show me a way how can we overwrite the file in ffmpeg or moviepy, it would be very helpful.

    


    THANKS.

    


  • FFMPEG filter_complex wih speedup and subtitles and scaling

    11 décembre 2015, par Sambir

    Hi I am trying to convert a file to a specific framerate and remove any jittering, jumping of the screen. I also try to boost the volume and add a subtitle overlay. I get an error with the curent line than it is not allowed to use complex_filter in combination with vf and af. as an extra I also would like to add text in the left corner (this i did not try yet) and would want the screen to be sized to full hd (changed scale to 1920:1080 but no succes).

    ffmpeg -i movie.mp4 -r 25 -filter_complex "[0:v]setpts=0.959*PTS[v];[0:a]atempo=1.0427[a]" -map "[v]" -map "[a]" -vf subtitles=sub.srt,scale=1920:1080 -af volume=2 -strict -2 -preset veryfast movie_new.mp4

    Got it !

    New :

    ffmpeg -i inside.mp4 -r 25 -filter_complex "[0:v]setpts=0.959*PTS[i];[i]scale=1920:1080[j];[j]subtitles=inside.srt[k];[0:a]atempo=1.0427[p];[p]volume=2[q]" -map "[k]" -map "[q]" -strict -2 -preset veryfast inside_new.mp4

    But now there is a new issue. Subs out of sync :P is there a easy fix for this or do i first need to encode without subs then resync then encode with subs ?

    found this link by the way Subtitle Resync Tool

    moviespeed is changed by 0.959. is there a calculation i can do to adjust the subtitles by x miliseconds ?

    EDIT : Got the subtitles fixed with subtitle workshop. Was just a small setting to change which directly shifted all the text :)

  • avfilter/vf_zscale : fix leaks in fast/bypass path

    4 mars 2022, par Paul B Mahol
    avfilter/vf_zscale : fix leaks in fast/bypass path
    • [DH] libavfilter/vf_zscale.c

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