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Other articles (24)

  • Support de tous types de médias

    10 April 2011

    Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...); audio (MP3, Ogg, Wav et autres...); vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...); contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google (...)

  • HTML5 audio and video support

    13 April 2011, by

    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 (...)

  • Support audio et vidéo HTML5

    10 April 2011

    MediaSPIP utilise les balises HTML5 video et audio pour la lecture de documents multimedia en profitant des dernières innovations du W3C supportées par les navigateurs modernes.
    Pour les navigateurs plus anciens, le lecteur flash Flowplayer est utilisé.
    Le lecteur HTML5 utilisé a été spécifiquement créé pour MediaSPIP : il est complètement modifiable graphiquement pour correspondre à un thème choisi.
    Ces technologies permettent de distribuer vidéo et son à la fois sur des ordinateurs conventionnels (...)

On other websites (5496)

  • Revision 00d54aa331: First pass clean up. One of a series of changes to clean up two pass allocation

    9 May 2014, by Paul Wilkins

    Changed Paths:
     Modify /vp9/encoder/vp9_firstpass.c



    First pass clean up.

    One of a series of changes to clean up two pass
    allocation as precursor to support for multiple arf
    or boosted frames per GF/ARF group.

    This change pulls out the calculation of the total bits
    allocated to a GF/ARF group into a function, to aid
    readability and reduce the line count for define_gf_group().

    This change should have no material impact on output.

    Change-Id: I716fba08e26f9ddde3257e7d9b188453791883a3

  • Size of files was increased after splitting by Ffmpeg

    29 April 2014, by user3584205

    I use this code to split file to multiple parts:

    @echo off
    
for %%i in (*.mp4) do ( 
    
  ffmpeg -i "%%~i" -vcodec copy -acodec copy -ss 00:00:00 -t 00:00:05 "D:\Ebook\%%~ni_1.mp4"
    
  ffmpeg -i "%%~i" -vcodec copy -acodec copy -ss 00:00:05 -t 00:00:10 "D:\Ebook\%%~ni_2.mp4"
    
  ffmpeg -i "%%~i" -vcodec copy -acodec copy -ss 00:00:10 "D:\Ebook\%%~ni_3.mp4"
    
  )
    
pause

    It worked but I have a problem. It is total size of parts is larger than original file.

    Original: 700 MB and after splitting:

    Part 1: 225
    
Part 1: 500
    
Part 2: 250

    Why ? And how to keep same quality and size of files after splitting ? Thank you very much !

  • ffmpeg keyframe extraction

    26 September 2012, by Shikhar Shrivastav

    I have been trying to extract keyframes from video using ffmpeg 0.11.1 . So far all the commands I have tried do not extract keyframes but return all the frames ie 25fps*total time number of frames in the output.
    I tried setting the keyint_min as 25 to make sure there is a amximum of 1 keyframe per second.

    ffmpeg -vf select="eq(pict_type\,PICT_TYPE_I)" -g 250 -keyint_min 25 -i C:\test.mp4 -vsync 2 -f image2 C:\testTemp\thumbnails-%02d.jpeg

    But still all the frames are returned.

    Then i tried, to separate the keyframes by 20 seconds.

    ffmpeg -i C:\test.mp4 -vf select='eq(pict_type\,I)*(isnan(prev_selected_t)+gte(t-prev_selected_t\,20))' -vsync 0 -f image2 C:\testTemp\%09d.jpg

    Again same result, all the frames are returned.

    What should I do?

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