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Autres articles (53)

  • Websites made ​​with MediaSPIP

    2 mai 2011, par

    This page lists some websites based on MediaSPIP.

  • Creating farms of unique websites

    13 avril 2011, par

    MediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
    This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...)

  • Other interesting software

    13 avril 2011, par

    We don’t claim to be the only ones doing what we do ... and especially not to assert claims to be the best either ... What we do, we just try to do it well and getting better ...
    The following list represents softwares that tend to be more or less as MediaSPIP or that MediaSPIP tries more or less to do the same, whatever ...
    We don’t know them, we didn’t try them, but you can take a peek.
    Videopress
    Website : http://videopress.com/
    License : GNU/GPL v2
    Source code : (...)

Sur d’autres sites (7507)

  • ffmpeg command to scale, show images at exactly 130bpm [closed]

    17 août 2023, par S. Imp

    I have a sequence of images which I would like to display to some music that plays at 130bpm. I'll also need to scale the images, which are a rather strange 2673x2151 pixels each down to something, ideally something that would fit without stretching inside a 1080p frame — e.g. 1342x1080.

    


    130BPM yields weirdness with frame rates. There are 2.16666666667 (13/6) beats per second. This being the case, I can't figure out how many frames to show each each image at the usual frame rates (24, 25, 30 fps). If I could make a movie with a frame rate of 2.16666667 frames per second, i could simply show each image for one frame. This seems like it might actually be optimal — it would probably make a a very compact video file, right ??

    


    Alternatively, if we must set the frame rate to an positive integer value, 13 frames per second works if we just display each image for six frames. 13 FPS means 780 frames per minute. 780 frames divided by 130 beats means 6 frames per beat.

    


    Finally, my images are named j1.jpg, j2.jpg, j3.jpg, etc.

    


    Can someone help me concoct an ffmpeg command to assemble these images into a video with each image lasting one beat at 130BPM ? I've been trying to massage this command, which does assemble the images into a movie, but my attempts to specify a frame rate have had weird effects. E.g., doing a -r results in strange videos that change image very erratically. I think it's because there's a setpts=N/25/TB bit in there.

    


    ffmpeg -pattern_type glob -i "j*.jpg" -filter_complex "[0]reverse[r];[0][r]concat,loop=2:250,setpts=N/25/TB,scale=1342:1080" -pix_fmt yuv420p -c:v libx264 -preset slow -b:v 3500k output_looped.mp4


    


    Also, I don't understand what the 250 means in loop=2:250. If someone could explain that to me, I'd be grateful.

    


  • lavfi/aspect : show log info even in case no argument is provided to setdar/setsar

    18 février 2012, par Stefano Sabatini

    lavfi/aspect : show log info even in case no argument is provided to setdar/setsar

  • Diagonal split to show two positions of the same video frame. Landscape input, portrait output

    23 septembre 2020, par ajomajo

    I have a 16:9 video with two faces talking to eachother. I want to make a portrait video output (for smartphones viewport) where I show both faces in the same frame, split diagonally. Is this possible ? Like this : from [o o] to [%]

    


    I have used a filter .script-file earlier to fit one face into the frame, but now I'd like to fit both faces from the same scene, and preferably diagonally.

    


    The viewer will be able to see the two faces having a dialogue in a portrait aspect ratio, no matter how far away they are from eachother in the original landscape aspect ratio.

    


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