Recherche avancée

Médias (0)

Mot : - Tags -/serveur

Aucun média correspondant à vos critères n’est disponible sur le site.

Autres articles (102)

  • MediaSPIP 0.1 Beta version

    25 avril 2011, par

    MediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
    The zip file provided here only contains the sources of MediaSPIP in its standalone version.
    To get a working installation, you must manually install all-software dependencies on the server.
    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

  • Modifier la date de publication

    21 juin 2013, par

    Comment changer la date de publication d’un média ?
    Il faut au préalable rajouter un champ "Date de publication" dans le masque de formulaire adéquat :
    Administrer > Configuration des masques de formulaires > Sélectionner "Un média"
    Dans la rubrique "Champs à ajouter, cocher "Date de publication "
    Cliquer en bas de la page sur Enregistrer

  • 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 (11755)

  • FFMPEG : How to extract a PNG sequence from a video, remove duplicate frames in the process and keep the original frame number ?

    16 mai 2020, par Simon

    I have a recording of an old game which has variable framerate. Since I want to process individual frames to upscale and modernize the footage I would like to avoid any duplicate frames. I know that I can use this function to extract all frames from a video :

    



    ffmpeg -i input.mov -r 60/1 out%04d.png


    



    And I know that I can remove duplicate frames using this function :

    



    ffmpeg -i input.mov -vf mpdecimate,setpts=N/FRAME_RATE/TB output.mov


    



    However, the above command removes duplicate frames and puts frames next to each other whereas in order to keep a timecode of sorts it would be a lot more useful to be able to extract PNGs with frame number (video is progressive 60fps) but without all of the duplicates.

    



    So, the question is : what if I want to extract PNG files BUT maintain the original corresponding framenumber within the sequence ? So, if we have a video with 10 frames and frames 2-8 are duplicates it spits out 1.png 2.png 9.png and 10.png ? How do I combine both bits of code listed above ?

    


  • libavutil : Use an intermediate variable in AV_COPY*U

    28 juillet 2016, par Martin Storsjö
    libavutil : Use an intermediate variable in AV_COPY*U

    If AV_RN and AV_WN are macros with multiple individual reads and
    
writes, the previous version of the AV_COPYU macro would fail if
    
the reads and writes overlap.
    

    This should not be any less efficient in any case, given a
    
sensibly optimizing compiler.
    

    Signed-off-by : Martin Storsjö <martin@martin.st>
    • [DBH] libavutil/intreadwrite.h

  • FFmpeg GIF dump & video slideshow errors

    27 avril 2017, par Techie Android

    I’m running Windows 10 and have the latest static 64bit nightly FFmpeg version. Here are my scripts, I’ve been trying to get them fixed but I can’t seem to get either to work.

    I have a GIF file named gif.gif that I need the frames dumped out of and named in this order : img000.png img001.png img002.png and so forth.

    ffmpeg -i "gif.gif" "%img%%03d.png"

    It’s error message is :

    [NULL @ 052857c0] Unable to find a suitable output format for ’C :\Users\username’
    C :\Users\username : Invalid argument

    This is where I need the individual frames to be encoded into a video file and get it to duplicate the frames necessary to make it a slideshow. It should copy each frame 150 times so that they will last for 5s each at 30fps.
    The filename is video maker.bat

    ffmpeg -i %img%%03d.png -framerate 1/5 -c:v libx264 -r 30 -pix_fmt yuv420p "output.mp4"

    It’s error message is :

    imgC :\myfilesdirectoryhere\video maker.bat3d.png : Protocol not found

Navigation