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Autres articles (56)

  • 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 (...)

  • Contribute to documentation

    13 avril 2011

    Documentation is vital to the development of improved technical capabilities.
    MediaSPIP welcomes documentation by users as well as developers - including : critique of existing features and functions articles contributed by developers, administrators, content producers and editors screenshots to illustrate the above translations of existing documentation into other languages
    To contribute, register to the project users’ mailing (...)

  • Ecrire une actualité

    21 juin 2013, par

    Présentez les changements dans votre MédiaSPIP ou les actualités de vos projets sur votre MédiaSPIP grâce à la rubrique actualités.
    Dans le thème par défaut spipeo de MédiaSPIP, les actualités sont affichées en bas de la page principale sous les éditoriaux.
    Vous pouvez personnaliser le formulaire de création d’une actualité.
    Formulaire de création d’une actualité Dans le cas d’un document de type actualité, les champs proposés par défaut sont : Date de publication ( personnaliser la date de publication ) (...)

Sur d’autres sites (3491)

  • Can I use ffserver to stream multiple video files from multiple users ?

    4 août 2017, par zeroh7

    First, forgive me for not having good English.

    I learned about ffmpeg and I’m studying it.

    I have a question, but I can not find any related documents on the Internet.

    Here are my questions.

    1. Can I use ffserver to stream multiple video files from multiple users ?

    2. Can I use the ffmpeg command to generate and destroy a feed in server.conf

    please : )

  • FFmpeg - combine 2 commands Mirror video and Watermark

    24 juin 2022, par 杨华邦

    I have 2 commands as shown below.

    


    Mirror video

    


    ffmpeg -i $srcFile -vf hflip $targetFile


    


    Watermark the mirrored video

    


    ffmpeg -i $srcFile -i $waterMark -filter_complex overlay=0:0 $targetFile


    


    but I was wondering is it possible to combine these into the 1 command ?

    


    Thanks !!!

    


  • how the packuswb instruction works ? (in low level bit operation)

    17 avril 2019, par MaikonNascimento

    Studying ffmpeg convertion from yuv to rgb , I came across the equation being implemented in assembly, yuv2rgb_template.c located in ffmpeg/libswscale/x86.

    I want to know how the instruction packuswb works ? Google says it :

    Converts 4 signed word integers from mm and 4 signed word integers from mm/m64 into 8 unsigned byte integers in mm using unsigned saturation.

        DEST[7:0] ← SaturateSignedWordToUnsignedByte DEST[15:0];
    
    DEST[15:8] ← SaturateSignedWordToUnsignedByte DEST[31:16];
    
    DEST[23:16] ← SaturateSignedWordToUnsignedByte DEST[47:32];
    
    DEST[31:24] ← SaturateSignedWordToUnsignedByte DEST[63:48];
    
    DEST[39:32] ← SaturateSignedWordToUnsignedByte SRC[15:0];
    
    DEST[47:40] ← SaturateSignedWordToUnsignedByte SRC[31:16];
    
    DEST[55:48] ← SaturateSignedWordToUnsignedByte SRC[47:32];
    
    DEST[63:56] ← SaturateSignedWordToUnsignedByte SRC[63:48];

    Since I dont know Assembly x86, it is even hard to simulate it or debug the current code.

    I want to know how they fit 16 bits in 8 bits ?

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