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Médias (91)

Autres articles (42)

  • 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 (5768)

  • alsa-audio-dec : explicitly cast the delay to a signed int64

    1er décembre 2013, par Anton Khirnov
    alsa-audio-dec : explicitly cast the delay to a signed int64

    Otherwise the expression will be evaluated as unsigned, which will break
    
when the result should be negative.
    
CC:libav-stable@libav.org
    • [DBH] libavdevice/alsa-audio-dec.c

  • libvpx : Cast a pointer to const to squelch a warning

    24 août 2016, par Diego Biurrun
    libvpx : Cast a pointer to const to squelch a warning

    libavcodec/libvpxdec.c:100:57 : warning : passing argument 3 of ’av_image_copy’ from incompatible pointer type
    
         av_image_copy(picture->data, picture->linesize, img->planes,
    
libavutil/imgutils.h:116:6 : note : expected ’const uint8_t **’ but argument is of type ’unsigned char **’
    
 void av_image_copy(uint8_t *dst_data[4], int dst_linesizes[4],
    • [DBH] libavcodec/libvpxdec.c

  • Correcting color cast with ffmpeg

    16 mai 2018, par Henry H

    I have two videos that have a pretty significant blue cast to them. I took some stills at the same time and I’m happy enough with the colors on those and I’d like to re-encode the videos, adjusting the colors to something similar to the stills.

    I understand I could either create a large collection of jpg images from the video and color correct them before reassembling them into a new video or I could use ffmpeg’s color level’s filter to do it directly. What I don’t know is how to get the numbers to pass to the filter. I’m assuming I want to do something like this :

    ffmpeg -i video.mov -vf "colorlevels=rimin=##/255:gimin=##/255:bimin=#/255:rimax=###/255:gimax=###/255:bimax=###/255, eq=gamma=#.##" -y out.mov

    How do I get the values to use for each of the r, g, and b min and max settings and gamma to use in place of the ###s ? Assuming this is the right approach, of course.

    Update : Perhaps this question would be better asked in a forum for gimp or photoshop. But I know how to adjust the color in those. What I need to know is how I translate those changes to what ffmpeg is expecting.

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