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  • Publier sur MédiaSpip

    13 juin 2013

    Puis-je poster des contenus à partir d’une tablette Ipad ?
    Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir

  • Encoding and processing into web-friendly formats

    13 avril 2011, par

    MediaSPIP automatically converts uploaded files to internet-compatible formats.
    Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
    Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
    Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
    All uploaded files are stored online in their original format, so you can (...)

  • Ajouter des informations spécifiques aux utilisateurs et autres modifications de comportement liées aux auteurs

    12 avril 2011, par

    La manière la plus simple d’ajouter des informations aux auteurs est d’installer le plugin Inscription3. Il permet également de modifier certains comportements liés aux utilisateurs (référez-vous à sa documentation pour plus d’informations).
    Il est également possible d’ajouter des champs aux auteurs en installant les plugins champs extras 2 et Interface pour champs extras.

Sur d’autres sites (11512)

  • Stream Internet radio using ffmpeg

    2 juillet 2022, par Hadi M.NourAllah

    i am a beginner at IOS Development now i make app that streaming internet and there was a problem that there is extinction that ios not support like .asf and .rm and there prifx that ios not support too like mms :// so after a lot of searching a lot of people told me that "use ffmpeg" and after a lot of wasted time i successfully build ffmpeg to my xcode now i am stuck because i don't how i use it .
so could any one tell me how can i use it please don't tell me use IFrameExtrator because i tried and i failed.

    


  • Stream Internet radio using ffmpeg

    28 janvier 2014, par Hadi M.NourAllah

    i am a beginner at IOS Development now i make app that streaming internet and there was a problem that there is extinction that ios not support like .asf and .rm and there prifx that ios not support too like mms :// so after a lot of searching a lot of people told me that "use ffmpeg" and after a lot of wasted time i successfully build ffmpeg to my xcode now i am stuck because i don't how i use it .
    so could any one tell me how can i use it please don't tell me use IFrameExtrator because i tried and i failed.

  • avcodec/bitpacked_dec : optimize bitpacked_decode_yuv422p10

    5 mai 2023, par Devin Heitmueller
    avcodec/bitpacked_dec : optimize bitpacked_decode_yuv422p10

    Rework the code a bit to speed up the 10-bit bitpacked decoding
    
routine.  This is probably about as fast as I can get it without
    
switching to assembly language.
    

    Demonstratable with :
    

    ./ffmpeg -f lavfi -i "smptehdbars=size=3840x2160" -c bitpacked -f image2 -frames:v 1 source.yuv
    
./ffmpeg -f bitpacked -pix_fmt yuv422p10le -s 3840x2160 -c:v bitpacked -i source.yuv -pix_fmt yuv422p10le out.yuv
    

    On my development system, it went from 80ms for a 2160p frame
    
down to 20ms (i.e. a 4X speedup).  Good enough for now, I hope...
    

    Comments from Marton :
    

    Originally on my system better performance could be achieved by simply
    
switching to the cached bitstream reader, but for Devin it was slower than
    
his direct byte operations.
    

    I changed the order of writing output from u/y/v/y to u/v/y/y, and that made
    
the code faster than the cached bitstream reader on my system as well.
    

    TIMER measurement of the decode loop on Ryzen 5 3600 with command line :
    

    ./ffmpeg -stream_loop 256 -threads 1 -f bitpacked -pix_fmt yuv422p10le -s 3840x2160 -c:v bitpacked -i source.yuv -pix_fmt yuv422p10le -f null none -loglevel error
    

    Before : 823204127 decicycles in YUV,     256 runs,      0 skips
    
After :  315070524 decicycles in YUV,     256 runs,      0 skips
    

    Signed-off-by : Devin Heitmueller <dheitmueller@ltnglobal.com>
    
Signed-off-by : Marton Balint <cus@passwd.hu>
    • [DH] libavcodec/bitpacked_dec.c

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