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Autres articles (54)

  • Configurer la prise en compte des langues

    15 novembre 2010, par

    Accéder à la configuration et ajouter des langues prises en compte
    Afin de configurer la prise en compte de nouvelles langues, il est nécessaire de se rendre dans la partie "Administrer" du site.
    De là, dans le menu de navigation, vous pouvez accéder à une partie "Gestion des langues" permettant d’activer la prise en compte de nouvelles langues.
    Chaque nouvelle langue ajoutée reste désactivable tant qu’aucun objet n’est créé dans cette langue. Dans ce cas, elle devient grisée dans la configuration et (...)

  • Contribute to translation

    13 avril 2011

    You can help us to improve the language used in the software interface to make MediaSPIP more accessible and user-friendly. You can also translate the interface into any language that allows it to spread to new linguistic communities.
    To do this, we use the translation interface of SPIP where the all the language modules of MediaSPIP are available. Just subscribe to the mailing list and request further informantion on translation.
    MediaSPIP is currently available in French and English (...)

  • Les tâches Cron régulières de la ferme

    1er décembre 2010, par

    La gestion de la ferme passe par l’exécution à intervalle régulier de plusieurs tâches répétitives dites Cron.
    Le super Cron (gestion_mutu_super_cron)
    Cette tâche, planifiée chaque minute, a pour simple effet d’appeler le Cron de l’ensemble des instances de la mutualisation régulièrement. Couplée avec un Cron système sur le site central de la mutualisation, cela permet de simplement générer des visites régulières sur les différents sites et éviter que les tâches des sites peu visités soient trop (...)

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  • How to add dynamic captions with animations on a video in a cross-platform Android & iOS app and export it as a final video ? [closed]

    29 avril, par Danial Qsk

    I'm building a cross-platform mobile app using Flutter (or React Native) where users can :

    


    Add dynamic text captions with animations over a video, similar to TikTok

    


    See these changes in real-time during video playback

    


    Export the video with the animated captions burned into the output (e.g., MP4)

    


    What I’ve implemented so far :

    


    Video playback using video_player in Flutter (or react-native-video).

    


    Captions are rendered using Canvas/UI layer during playback.

    


    Problem : While I can overlay animated text in the UI, I can't figure out how to include these in the exported video. I’m considering using FFmpeg to burn in the captions, but I’m unclear how to integrate it with the animated UI overlays or render them into a final video on both Android and iOS.

    


    What I want to achieve :

    


    Efficient way to render animated text overlays onto a video and export it as a final video file on both Android and iOS.

    


    Maintain good performance for real-time playback and smooth export.

    


    What approaches or processing pipelines could achieve this ?
(For example, rendering the UI layer to an offscreen video, integrating with FFmpeg, or using native rendering techniques.)

    


  • How to convert VP8 track with different frame resolution to h264

    13 septembre 2016, par Nikita

    I have a .webm file with VP8 track, recorded from WebRTC stream by external service (TokBox Archiving). The stream is adaptive, so each frame in track could have different resolution. Most players (in webkit browsers) use video resolution from track description (which is always 640x480) and scale frames to this resolution. Firefox and VLC player uses real frame resolution, changing video resolution respectively.

    I want to achieve 2 goals :

    1. play this video in Internet Explorer 9+ without additional plugin installation.
    2. change frames resolution to one fixed resolution, so the video will look identically in different browsers.

    So, my plan is :

    • extract frames from source webm file to images with real frame resolution (e.g. PNG or BMP) (how could I do that ?)
    • find max width and max height of images
    • add black padding to images, so smaller frames will be in the center of a new frame (of size MAX_WIDHTxMAX_HEIGHT)
    • combine images to h264 track using ffmpeg

    Is all correct ? How can I achieve this ? Can this algorithm be optimized some way ?

    I tried ffmpeg to extract images, but it does not parse real frame resolution, using resolution from track header.
    I think some libwebm functions can help me (to parse frame headers and extract images). Maybe someone has some code snippets to do this ?

    Example .webm (download source, do not play google-converted version) : https://drive.google.com/file/d/0BwFZRvYNn9CKcndhMzlVa0psX00/view?usp=sharing

    Official description of adaptive stream from TokBox support : https://support.tokbox.com/hc/en-us/community/posts/206241666-Archived-video-resolution-is-supposed-to-be-720x1280-but-reports-as-640x480

  • How should one start with ffmpeg's API ?

    20 mai 2018, par JoeDough

    I’d like to make a real time streaming program that takes input from a webcamera, ffmpeg looks like a good library for encoding a stream of images but there is no documentation or community tutorials (there is just a doxygen API reference).Where should I start if there’s no official documentation ?

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