Recherche avancée

Médias (1)

Mot : - Tags -/censure

Autres articles (39)

  • 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

  • MediaSPIP Player : problèmes potentiels

    22 février 2011, par

    Le lecteur ne fonctionne pas sur Internet Explorer
    Sur Internet Explorer (8 et 7 au moins), le plugin utilise le lecteur Flash flowplayer pour lire vidéos et son. Si le lecteur ne semble pas fonctionner, cela peut venir de la configuration du mod_deflate d’Apache.
    Si dans la configuration de ce module Apache vous avez une ligne qui ressemble à la suivante, essayez de la supprimer ou de la commenter pour voir si le lecteur fonctionne correctement : /** * GeSHi (C) 2004 - 2007 Nigel McNie, (...)

  • 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 (7090)

  • Trying to crop an image in ffmpeg using alphamerge but produces wrong alpha

    12 septembre 2021, par Alex Styl

    I am using alphamerge in order to crop an image within a circle.

    


    What I have so far is :

    


    ffmpeg -f lavfi -i "color=c=white:size=240x240" -i avatar.png -i mask.png -filter_complex \
 "[1][2]alphamerge[img]; \
 [0][img]overlay[out]" -c:v png -map "[out]" -pix_fmt rgba -t 5 -y out.mp4 2>&1


    


    with avatar.png and mask.png respectively being :

    


    avatar mask

    


    This produces the following output (1 frame of the output video) :

    


    enter image description here

    


    which is unexpected, given the original input is much darker than this.

    


    How can I crop the 'avatar.png' using the 'mask.png' so that the output is the avatar.png cropped in a circle and keeping the same alpha ?

    


    PS : The important bit here is for me to be able to crop the original image and maintaining the correct colors/apha of the original image. If there is an other way of doing this (other than alphamerge) I am happy to hear it.

    


  • flac : Fix channel order for mono files.

    28 juin 2014, par Erik de Castro Lopo
    flac : Fix channel order for mono files.

    * The default channel mask for mono files was 0x0001 (front left) but it
    
  makes more sense to use 0x0004 (front center) for such files.
    

    * Also FLAC will accept not only mono WAV files with 0x0001 mask, but also
    
  with 0x0002 (requested at https://sourceforge.net/p/flac/bugs/390/)
    
  and 0x0004 (e.g. SoX creates mono files with this mask).
    

    * The comment about channel support was updated.
    

    * The error message
    
     "Use —channel-map=none option to store channels in current order ; FLAC files
    
     must also be decoded with —channel-map=none to restore correct order."
    
  is misleading : FLAC never changes the order of channels.
    
  Decoding with this options also sets the channel mask of the resulting WAV
    
  file to 0. Without this option the mask is equal to the value of
    
  WAVEFORMATEXTENSIBLE_CHANNEL_MASK tag.
    

    Patch-from : lvqcl <lvqcl.mail@gmail.com>
    • [DH] src/flac/decode.c
    • [DH] src/flac/encode.c

  • Include a picture to audio file use CLI [on hold]

    20 mars 2016, par LXY

    i want to use something which can include pic file to an exist audio file. i tried using ffmpeg but the result seems like it can’t do that
    Then i used Foobar2k and it included the picture as cover successfully but it have no CLI and i want to use Linux app
    So how could i do this ?
    Sorry for my terrible English
    Just insert a cover art image into an exist ogg file.
    The format of picture should be png or jpg
    Thanks for help

Navigation