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  • Supporting all media types

    13 avril 2011, par

    Unlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)

  • Le plugin : Podcasts.

    14 juillet 2010, par

    Le problème du podcasting est à nouveau un problème révélateur de la normalisation des transports de données sur Internet.
    Deux formats intéressants existent : Celui développé par Apple, très axé sur l’utilisation d’iTunes dont la SPEC est ici ; Le format "Media RSS Module" qui est plus "libre" notamment soutenu par Yahoo et le logiciel Miro ;
    Types de fichiers supportés dans les flux
    Le format d’Apple n’autorise que les formats suivants dans ses flux : .mp3 audio/mpeg .m4a audio/x-m4a .mp4 (...)

  • 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 (...)

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  • isom : lpcm in mov default to big endian

    1er novembre 2013, par Mark Himsley
    isom : lpcm in mov default to big endian

    It is my understanding that "Unless otherwise stated, all data in a
    
QuickTime movie is stored in big-endian byte ordering" [1] in MOV files.
    

    I have a couple of thousand files, which technically are invalid because
    
their sound sample description element 4CC is ’lpcm’ but its version is
    
0 - and "Version 0 supports only uncompressed audio in raw (’raw ’) or
    
twos-complement (’twos’) format" [2]
    

    Because isom.c only contains a mapping for 4CC ’lpcm’ to
    
AV_CODEC_ID_PCM_S16LE, these files have their audio decoded as LE when
    
it is actually BE.
    

    This commit adds AV_CODEC_ID_PCM_S16BE as the first match for 4CC ’lpcm’.
    

    [1]
    
https://developer.apple.com/library/mac/documentation/quicktime/QTFF/qtff.pdf
    
page 21
    
[2]
    
https://developer.apple.com/library/mac/documentation/quicktime/QTFF/qtff.pdf
    
page 178
    

    Reviewed-by : Yusuke Nakamura <muken.the.vfrmaniac@gmail.com>
    • [DBH] libavformat/isom.c

  • Screen capture in CircleCI VMs in macOS [closed]

    16 août 2024, par Anton Shkurenko

    I'm trying to record test videos using either ffmpeg or appium mac2 driver (as far as I know, it uses ffmpeg behind the scenes anyway)

    &#xA;

    deviceId == 0 is screen capture in CircleCI VM.

    &#xA;

    In python code is simple :

    &#xA;

    appium_driver.start_recording_screen(deviceId=0)

    &#xA;

    Or using raw ffmpeg :

    &#xA;

    ffmpeg -f avfoundation -i "0" -t 10 output.mp4

    &#xA;

    But I can't give permissions somehow. Once I start video recording, there is a popup :

    &#xA;

    permissions popup

    &#xA;

    And an error :

    &#xA;

    [ffmpeg] objc[23088]: class &#x27;NSKVONotifying_AVCaptureScreenInput&#x27; not linked into application

    &#xA;

    What I've tried :

    &#xA;

    basically main are ffmpeg and .machine-agent, others are just out of desperation 🙂

    &#xA;

          - macos/add-permission:&#xA;         bundle-id: /Applications/Utilities/Terminal.app&#xA;         permission-type: kTCCServiceScreenCapture&#xA;     - macos/add-permission:&#xA;         bundle-id: /private/tmp/.machine-agent&#xA;         permission-type: kTCCServiceScreenCapture&#xA;     - macos/add-permission:&#xA;         bundle-id: /usr/local/bin/ffmpeg&#xA;         permission-type: kTCCServiceScreenCapture&#xA;     - macos/add-permission:&#xA;         bundle-id: /opt/homebrew/bin/appium&#xA;         permission-type: kTCCServiceScreenCapture&#xA;

    &#xA;

    P.S.&#xA;Screen capturing via applescript and quicktime doesn't work for me (I can't click "Record" button). What I've also tried : wrap ffmpeg into apple Automator or Apple Script to make a fake app and give permissions to it, but it didn't work neither.

    &#xA;

  • Anomalie #4331 (Fermé) : Ajouté l’extension jpeg dans spip_types_documents

    9 mai 2019, par Maïeul Rouquette

    Le mime type image/jpeg a pour extension classique jpg. Mais les logiciels apple utilisenrt fréquement jpeg. En cas de double vérif (sur la base du mime et de l’extension), il faudrait disposer donc de jpeg.

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