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Médias (91)

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  • 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 (...)

  • Emballe médias : à quoi cela sert ?

    4 février 2011, par

    Ce plugin vise à gérer des sites de mise en ligne de documents de tous types.
    Il crée des "médias", à savoir : un "média" est un article au sens SPIP créé automatiquement lors du téléversement d’un document qu’il soit audio, vidéo, image ou textuel ; un seul document ne peut être lié à un article dit "média" ;

  • 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 (...)

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  • lavc/cbrt_tablegen : speed up tablegen

    11 janvier 2016, par Ganesh Ajjanagadde
    lavc/cbrt_tablegen : speed up tablegen

    This exploits an approach based on the sieve of Eratosthenes, a popular
    
method for generating prime numbers.
    

    Tables are identical to previous ones.
    

    Tested with FATE with/without —enable-hardcoded-tables.
    

    Sample benchmark (Haswell, GNU/Linux+gcc) :
    
prev :
    
7860100 decicycles in cbrt_tableinit,       1 runs,      0 skips
    
7777490 decicycles in cbrt_tableinit,       2 runs,      0 skips
    
[...]
    
7582339 decicycles in cbrt_tableinit,     256 runs,      0 skips
    
7563556 decicycles in cbrt_tableinit,     512 runs,      0 skips
    

    new :
    
2099480 decicycles in cbrt_tableinit,       1 runs,      0 skips
    
2044470 decicycles in cbrt_tableinit,       2 runs,      0 skips
    
[...]
    
1796544 decicycles in cbrt_tableinit,     256 runs,      0 skips
    
1791631 decicycles in cbrt_tableinit,     512 runs,      0 skips
    

    Both small and large run count given as this is called once so small run
    
count may give a better picture, small numbers are fairly consistent,
    
and there is a consistent downward trend from small to large runs,
    
at which point it stabilizes to a new value.
    

    Reviewed-by : Michael Niedermayer <michael@niedermayer.cc>
    
Signed-off-by : Ganesh Ajjanagadde <gajjanagadde@gmail.com>
    • [DH] libavcodec/cbrt_tablegen.h

  • Speed change command fails when audio stream is not present in video - ffmpeg

    26 juillet 2016, par lalith

    I am trying to change speed of the video that does not contain audio stream via below command

    String[]{"ffmpeg", "-y", "-i", orginalFile, "-threads", "5", "-preset", "ultrafast", "-strict", "experimental", "-filter_complex", "[0:v]setpts=0.50*PTS[v];[0:a]atempo=2.0[a]", "-map", "[v]", "-map", "[a]", "-b", "2097k", "-ab", "48000", "-ac", "2", "-ar", "22050", "-vcodec", "mpeg4", destinationFile};

    Command fails stating that video does not have audio stream. So, do I need to check whether audio stream is present in the video or is there something I can do in this scenario ?

  • FFMPEG record http video stream with normal speed

    18 mai 2017, par user3119509

    I’m recording an http stream from my IP Camera (TPLINK NC200), using this command :

    ffmpeg -i http://admin:YWRtaW4=@192.168.0.18:8080/stream/getvideo -t 30 -acodec copy -vcodec copy abc.mp4

    As you can see , the video length is set to 30 seconds ( -t option ) . But it takes about 1 minute 30 seconds to record , and the video speed is very high ( the camera recording a stopwatch and a 30-second video recorded the timer to 1 minute and 11 seconds ).

    Is there some ffmpeg option to get a normal speed video ? Or the problem is the camera configuration ?

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