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Médias (91)

Autres articles (35)

  • Support de tous types de médias

    10 avril 2011

    Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...) ; audio (MP3, Ogg, Wav et autres...) ; vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...) ; contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google Earth) (...)

  • 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 (...)

  • 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 (...)

Sur d’autres sites (4241)

  • Reading custom SEI message when decoding using VideoCodec (NVENC)

    23 avril 2018, par cloudraven

    I have a series of videos with custom information encoded in the sei message NAL. Is it possible to read that information when decoding using the Nvidia hardware decoder. If it is not supported, should I use FFMPEG compiled with NVENC support instead ?

    UPDATE :
    I want to decode the media and read the SEI message. I am streaming live video and including postprocessing info in the sei message. The client has to use that info to apply effects to the decoded media.
    Decoding the media as quickly as possible is important, and I want to do it in hardware. I assume that the Nvidia decoder must parse the NAL units to decode them. I would like to avoid duplicating work if possible.

  • ffmpeg nvenc GPU Memory Usage

    22 novembre 2016, par Ivan Kolesnikov

    I transcoding video on NVIDIA QUADRO K4200 in Ubuntu (ffmpeg version is 2.7.1, NVENC SDK 5.0.1). GPU Memory usage for one stream is 100 MB. Please see an output of nvidia-smi command :
    enter image description here

    But when I run the same transcoding process with the same ffmpeg parameters on another computer with NVIDIA GTX 980 TI (ffmpeg version is 3.0, NVENC SDK 5.0.1) then GPU Memory usage for one stream is 170 MB. Please see the screenshot below :
    enter image description here

    Why such a difference in memory usage ? Can I decrease a GPU Memory usage on GTX 980 TI to 100MB for one transcode process as on QUADRO K4000 ?

  • Is there a way to use the cuvid decoder in OpenCV ?

    7 septembre 2018, par whadhack

    Wondering if there is way to use the NVIDIA codecs (e.g. cuvid, scale_npp, nvenc_h264/nvenc_hevc ) in OpenCV ? These codecs can be used in FFMpeg command line. As FFMpeg is a backend for OpenCV (e.g uses libavcodec, libavfilter etc ), is it possible to specify these codecs in code ?

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