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Autres articles (35)

  • 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 (...)

  • 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 (...)

  • 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 (3600)

  • lavc/videotoolboxenc : support additional options

    20 mai 2023, par Rick Kern
    lavc/videotoolboxenc : support additional options

    Added support for more VideoToolbox encoder options :

    - qmin and qmax options are now used

    - max_slice_bytes : Max number of bytes per H.264 slice

    - max_ref_frames : Limit the number of reference frames

    - Disable open GOP when the cgop flag is set

    - power_efficient : Enable power-efficient mode
    

    Signed-off-by : Rick Kern <kernrj@gmail.com>
    • [DH] libavcodec/videotoolboxenc.c

  • Generate and concatenate videos from images with ffmpeg in single command

    17 août 2022, par YulkyTulky

    My goal is to generate a video from images. Let's say I have 2 images 1.png and 2.png.

    &#xA;

    I can do

    &#xA;

    ffmpeg -loop 1 1.png -t 3 1.mp4&#xA;

    &#xA;

    ffmpeg -loop 1 2.png -t 5 2.mp4&#xA;

    &#xA;

    to create a 3 second video from the first image and 5 second video from the second image.

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    Then, I merge the two videos using

    &#xA;

    ffmpeg -i 1.mp4 -I 2.mp4 -filter_complex "concat" final.mp4 &#xA;

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    to create my final 8 second video.

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    This process seems extremely inefficient, and I feel I do not have to use all this processing power+disk reading/writing to create 2 intermediary video files when I only want the one final video.

    &#xA;

    Is there a way to execute this entire process in one ffmpeg command (efficiently) ?

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  • How to merge list of videos with frame specifiec order using ffmpeg ?

    9 décembre 2015, par Il'ya Zhenin

    I have a list of files :

    even_0.avi
    
odd_0.avi
    
even_1.avi
    
odd_1.avi
    
...
    
even_n.avi
    
odd_n.avi

    And I want to merge them in a single video file in such a way, that zero frame would be taken from even_0.avi, first frame from odd_0.avi, second - from even_0.avi and so on.

    And if all frames in even_0.avi are taken, then next frame we will take from even_1.avi, next from odd_0.avi, next again from even_1.avi. Basically, when one video ends, we just start taking frames from the next video with prefix "even_" or "odd_".

    I just started using ffmpeg, know, how to simply merge videos, change resolution, fps and so on, but this is beyond my power, so, please, help.

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