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Autres articles (31)

  • 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 ;

  • Supporting all media types

    13 avril 2011, par

    Unlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)

  • De l’upload à la vidéo finale [version standalone]

    31 janvier 2010, par

    Le chemin d’un document audio ou vidéo dans SPIPMotion est divisé en trois étapes distinctes.
    Upload et récupération d’informations de la vidéo source
    Dans un premier temps, il est nécessaire de créer un article SPIP et de lui joindre le document vidéo "source".
    Au moment où ce document est joint à l’article, deux actions supplémentaires au comportement normal sont exécutées : La récupération des informations techniques des flux audio et video du fichier ; La génération d’une vignette : extraction d’une (...)

Sur d’autres sites (4458)

  • ffmpeg different resolution hstack

    24 octobre 2022, par kaycaborr

    How can i vertically or horizontally stack videos with different resolutions ?

    


    I currently use
ffmpeg -i top.mp4 -i bottom.mp4 -filter_complex vstack output.mp4 but this fails due to resolutions 1920x640 and 1024x384.

    


  • Variable resolution in video file containers like mp4, mkv

    15 novembre 2022, par Artem Suprunov

    I need to make an application that gets media data from some proprietary system and save to files mkv and mp4, on user's choice. In that system resolution of video frames may vary (for instance, 1920x1080, 1280x720 etc.). My question is whether it's possible to have in that containers a video track with variable resolution ?

    


    I'm going to use ffmpeg libs C api, but if it has design limitations that don't allow to change resolution on fly, then I'll have to implement own muxers, but firstly need to find out if it's possible n terms of the containers format, at least one of them.

    


  • what is the name of the video codec that could dynamic adjust resolution and FPS

    29 novembre 2015, par user454083

    I remember that there is video codec could dynamic adjust frame rate and resolution.
    For example, sender side, always send a base profile with QQVGA with 15 FPS, and receiver side always could at least decode QQVGA with 15 FPS. As long as there is more capacity in the bandwidth or CPU process time, sender side could add more details on the pixel of each frame. For example, add more details in the QQVGA, then new frame can be decoded as QVGA or VGA. And insert frames between frames in base profile. The 15 FPS can be 30 FPS etc..
    I wonder what is the name of this codec. If I remember it correctly, YouTube uses this codec and Google holds the patent of this video codec.

    If someone could remind me what is the name of this codec and more details of this codec. thanks

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