Recherche avancée

Médias (1)

Mot : - Tags -/punk

Autres articles (41)

  • 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

  • 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 (...)

  • 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 (5262)

  • 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 ?

  • FFMPEG - Palettegen for animations is not working

    18 juillet 2018, par deanhodges

    I have a script taken from the correct answer at https://superuser.com/questions/1002562/convert-multiple-images-to-a-gif-with-cross-dissolve, but I am getting no results.

    Even copying the code word for word does not work for me.

    However, if I run $ffmpeg = shell_exec("ffmpeg -i images/image001.jpg -vf palettegen palette_test.png"); on a single image, it works fine. But because I need it for an animation, I need to create a pallete for all images.

    Unless of course, on each image in the GIF sequence I can load a new palette ?

    $q = "ffmpeg -f image2 -framerate 0.5 -i ../view/client/files/".$dir."/%*.jpg -i palettePro.png -lavfi paletteuse -y .." . $save_path . '/' . $filename . " -report";

  • Next drawtext clears the previous one ffmpeg

    27 août 2021, par Макс Шульдинер
    ffmpeg.exe -i ffmpeg_inputs/zheltiy_chelik.mp4  -vf "[in]drawtext=fonts/Temporarium.otf:text='r':fontcolor=orange:fontsize=100:x=(w-text_w)/2+0:y=0:enable='between(t,0, 11)', drawtext =fonts/Temporarium.otf:text = 'r':fontcolor=orange:fontsize=100:x=(w-text_w)/2+20:y=0:enable='between(t,11, 22)', drawtext =fonts/Temporarium.otf:text = 'r':fontcolor=orange:fontsize=100:x=(w-text_w)/2+40:y=0:enable='between(t,22, 33)'[out]" ffmpeg_outputs/test2.mp4 -y 


    


    There is such a ffmpeg line. Its meaning is to draw a letter 20 pixels to the right of the current position of the word every 11 seconds, and in this way "write the word". But here's the problem - when the second letter starts to render, it overwrites the first, and the third, respectively, overwrites the second. The string seems to have prescribed [in] and [out] but does not help, maybe someone has ideas

    


Navigation