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  • Des sites réalisés avec MediaSPIP

    2 mai 2011, par

    Cette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
    Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page.

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    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 (4495)

  • converting png to movies with R via ffmpeg

    10 mai 2021, par user237554

    I want to convert a series of *.png files to a movie with R and have installed ffmpeg in the root directory. I think the installation has been successful because if I type

    


         ffmpeg -version


    


    in terminal I get all of the version information etc., etc.

    


    I have my *.png files saved in the wd and in R I say

    


        imgs <- list.files(pattern="*.png")
        saveVideo({
        for(img in imgs){
          im <- magick::image_read(img)
          plot(as.raster(im))
        }
      })


    


    I get an error message that "the command ""ffmpeg"" is not available in your system. Please install FFmpeg". Is there something I need to do to get R and ffmpeg to talk to each other ? Again, from terminal, ffmpeg is in the directory and it looks like it installed.

    


    thanks

    


  • Flutter Desktop Images Sequences into Video

    8 octobre 2019, par Hari Anugrah

    I am building a Flutter Desktop App (Mainly running for MacOs) that compile a series of images into a stop motion video

    How do I achieve such goal ?

    I’ve used ffmpeg via terminal to do this, but I want to achieve it using Flutter Desktop now.

    I looked into https://pub.dev/packages/flutter_ffmpeg but seems like it doesn’t support desktop

    I looked into dart:ffi but I don’t have enough experience to run ffmpeg command via C to begin with

  • opencv cannot read MP4 file from sony camcorder

    7 juin 2016, par Jundong

    The sony camcorder recorded video in MP4 format. I am reading the file by

    import cv2
    
vid = cv2.VideoCapture('sample.MP4')

    my OpenCV version is 2.4.8, as a Python module.

    The codec of the ’sample.MP4’ is H.264, Linear PCM.

    ffprobe sample.MP4

    returns :

    > Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C0004.mp4':   Metadata:
    
>     major_brand     : XAVC
    
>     minor_version   : 16785407
    
>     compatible_brands: XAVCmp42iso2
    
>     creation_time   : 2016-06-06 13:41:51   Duration: 00:00:15.02, start: 0.000000, bitrate: 50439 kb/s
    
>     Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709/bt709/iec61966-2-4), 1920x1080 [SAR 1:1 DAR 16:9],
    
> 48655 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc (default)
    
>     Metadata:
    
>       creation_time   : 2016-06-06 13:41:51
    
>       handler_name    : Video Media Handler
    
>       encoder         : AVC Coding
    
>     Stream #0:1(und): Audio: pcm_s16be (twos / 0x736F7774), 48000 Hz, 2 channels, s16, 1536 kb/s (default)
    
>     Metadata:
    
>       creation_time   : 2016-06-06 13:41:51
    
>       handler_name    : Sound Media Handler
    
>     Stream #0:2(und): Data: none (rtmd / 0x646D7472), 245 kb/s (default)
    
>     Metadata:
    
>       creation_time   : 2016-06-06 13:41:51
    
>       handler_name    : Timed Metadata Media Handler 
    
> Unsupported codec with id 0 for input stream 2

    It seems that the codec for h.264 is missing. The version of my FFmpeg is 3.0.

    I tried avconv -i sample.MP4 -c:a copy -c:v copy sample_converted.mp4 to convert the sample.MP4 to sample_converted.mp4, this command line did not work. The command ffmpeg -i sample.mp4 sample_converted.mp4 worked ; however, it compromised the video quality badly.I used an online video converter : http://www.online-convert.com/ (which output nice quality video in mp4 format, but it has size limitation for free users)
    to convert the MP4 to mp4, the command in Terminal as below :

    ffprobe 'sample_converted.mp4'

    returns

    > Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C0001_converted.mp4':  
    
> Metadata:
    
>     major_brand     : isom
    
>     minor_version   : 512
    
>     compatible_brands: isomiso2avc1mp41
    
>     encoder         : Lavf57.36.100   Duration: 00:00:02.02, start: 0.000000, bitrate: 16777 kb/s
    
>     Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 16801 kb/s, 59.94
    
> fps, 59.94 tbr, 60k tbn, 119.88 tbc (default)
    
>     Metadata:
    
>       handler_name    : VideoHandler
    
>     Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 127 kb/s (default)
    
>     Metadata:
    
>       handler_name    : SoundHandler

    Obviously, the encoders, handler_names etc. of the sample.MP4 and sample_converted.mp4 are different. Any idea using FFmpeg or OpenCV to convert this raw video from camcorder to the readable format without compromising the video quality ?

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