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  • 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 (...)

  • Keeping control of your media in your hands

    13 avril 2011, par

    The vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
    While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
    MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
    MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...)

Sur d’autres sites (2630)

  • Cropping a mp4 into multiple fractions [duplicate]

    19 mai 2021, par DomDom

    Is it possible to crop a (huge) movie into fractions along the X- and Y-axis of the resolution ?

    


    Basically split it into smaller movies into rows and columns with each one having the full length ?

    


    I have no experience with ffmpeg and I tried figuring out this question in the docs but since I'm a noob, I don't understand half of it.

    


    By now I could only find information about cropping along the time of the movie, not resizing it multiple times with the full length.

    


    If not then maybe it is possible to just split an image into rows and columns ?

    


  • AVSampleBufferDisplayLayer with VTDecompressionSession

    7 juillet 2016, par user1784317

    I’ve been struggling with AVSampleBufferDisplayLayer being really choppy with a lot of motion. When there was motion in my live stream, it would be come pixelated and half frozen with multiple frames displaying at once. However, once I added the following piece of code, everything was solved :

    VTDecodeFrameFlags flags = kVTDecodeFrame_EnableAsynchronousDecompression 
    
| kVTDecodeFrame_EnableTemporalProcessing;
    
VTDecodeInfoFlags flagOut;
    
VTDecompressionSessionDecodeFrame(decompressionSession, sampleBuffer, flags,
    
(void*)CFBridgingRetain(NULL), &flagOut);

    Note that I did create the decompression session before, but I don’t actually do anything in the callback. I am still calling enqueueSampleBuffer : on AVSampleBufferDisplayLayer and that is how the video is displayed on the screen.

    Do you have to call VTDecompressionSessionDecodeFrame for AVSampleBufferDisplayLayer to display correctly ? I thought AVSampleBufferDisplayLayerr would use VTDecompressionSessionDecodeFrame internally. Is this due to being on the iOS Simulator ?

  • avformat/nut : support planar rgb

    9 août 2013, par Michael Niedermayer
    avformat/nut : support planar rgb

    Fixes first half of Ticket2274
    

    Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
    • [DH] libavformat/nut.c

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