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Autres articles (61)

  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

  • 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

  • List of compatible distributions

    26 avril 2011, par

    The table below is the list of Linux distributions compatible with the automated installation script of MediaSPIP. Distribution nameVersion nameVersion number Debian Squeeze 6.x.x Debian Weezy 7.x.x Debian Jessie 8.x.x Ubuntu The Precise Pangolin 12.04 LTS Ubuntu The Trusty Tahr 14.04
    If you want to help us improve this list, you can provide us access to a machine whose distribution is not mentioned above or send the necessary fixes to add (...)

Sur d’autres sites (12551)

  • Debayer video with ffmpeg

    26 septembre 2016, par Andrew Spence

    Looking to debayer video with ffmpeg. I can’t find a way to do it without piping raw video between two instances of ffmpeg, because I can’t change the pixel format of my input video "in place" from gray to bayer_gbrg8. So, this command works :

    ffmpeg -i fr_losslessmovie_png_codec.avi -f image2pipe -pix_fmt gray \
    
-vcodec rawvideo - | ffmpeg -r 25 -f rawvideo -s 2048x700 \
    
-pix_fmt bayer_gbrg8 -i pipe:0 -y -pix_fmt yuv420p -b:v 25000k \
    
fr_debayer_compressed.mp4

    I would have given the source movie this pixel format, but didn’t realize ffmpeg suported bayered pixel formatting.

    Didn’t see this exact question online, and have not found a way to change the pixel format with video filters etc. without ffmpeg thinking i’m trying to convert the data. I just want to change the pixel format that the already existing gray data has been assigned.

    Thanks in advance !
    Andrew

  • avcodec/videotoolboxenc : Set profile (main/main10) on HEVC encode

    21 septembre 2020, par Harry Mallon
    avcodec/videotoolboxenc : Set profile (main/main10) on HEVC encode

    Signed-off-by : Harry Mallon <harry.mallon@codex.online>
    
Signed-off-by : Rick Kern <kernrj@gmail.com>
    • [DH] libavcodec/videotoolboxenc.c

  • Removing / Overlaying logo on mp4 video format with ffmpeg on linux

    12 septembre 2020, par SilverShadow

    I'm trying to remove a logo from an .mp4 video file with ffmpeg on linux machine without re-encoding (for preserving the same quality) with the following command :

    &#xA;

    ffmpeg -i input.mp4 -vf delogo=x=270:y=190:w=40:h=40 -c:a copy output.mp4 &#xA;

    &#xA;

    and it gives me the following errors :

    &#xA;

    Unrecognized option &#x27;vf&#x27;&#xA;

    &#xA;

    then a new error came up :

    &#xA;

    Unable to find a suitable output format for &#x27;delogo=x=270:y=190:w=40:h=40&#x27;&#xA;

    &#xA;

    ffmpeg is always updating and it seems that they change command line arguments a lot so any material or tutorial I find online seems to get outdated quickly ...

    &#xA;

    I reviewed the documentation but can't get it to work, I think I'm missing something...?

    &#xA;

    So : What is the correct command line in linux shell ? Also, how to view or find out the exact coordinates of the area to be removed before actually removing the logo ? And how can I overlay a solid color in a certain area instead of removing the logo transparently ?

    &#xA;

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