Recherche avancée

Médias (91)

Autres articles (55)

  • Personnaliser en ajoutant son logo, sa bannière ou son image de fond

    5 septembre 2013, par

    Certains thèmes prennent en compte trois éléments de personnalisation : l’ajout d’un logo ; l’ajout d’une bannière l’ajout d’une image de fond ;

  • 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

  • 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 (12147)

  • ffmpeg drawtext on ubuntu : ffmpeg does not change text location [closed]

    10 juin 2024, par Wolf Wolf

    I am designing a video editor bot for Telegram. I want to use ffmpeg
and I need a text to be placed on the video and change the place of
the text randomly every few seconds.

    


    There is an example on the site itself.

    


    I used the following command :

    


       ffmpeg -i
   "/home/editor/downloads/video_2023-07-10_17-53-05_7375753324605210932.mp4"
   -filter:v drawtext="fontsize=30:fontfile=/usr/share/hellotext=hellotext/share/World':
   x=if(eq(mod(t\,30)\,0)\,rand(0\,(w-text_w))\,x):y=if(eq(mod (t\,30
   )\, 0)\,rand(0\,(h-text_h))\,y)" -codec:v libx264 -codec:a copy
   -preset slow -crf 18 -y output.mp4


    


    This command executes and even the text is placed on the video, now
the problem is that it doesn't change the location of the text. I
tested this before and it worked fine, but now it doesn't run
properly.

    


  • avcodec/dovi_rpu{enc,dec} : fix ms_weight handling

    25 mai 2024, par Niklas Haas
    avcodec/dovi_rpuenc,dec : fix ms_weight handling

    The code as written was wrong. In the spec, these fields are treated
    
merely as plain integers in the range 0 to 4095. The only difference
    
between L2 and L8 is that L2.ms_weight also accepts an additional value
    
of -1, hence the extra sign bit. While it's likely that these are still
    
shifted integers in disguise, since all real-world samples seem to use
    
a value of 2048 here, the offset used in the code was wrong.
    

    In addition, because the l8.ms_weight struct member is unsigned, these
    
wrong shifting semantics ended up overflowing the field, leading to
    
undefined behavior when transcoding. Fortunately, the damage was
    
relatively contained in practice, because it just corrupts the coding of
    
this field, which is ignored in practice in all implementations I have
    
seen.
    • [DH] libavcodec/dovi_rpudec.c
    • [DH] libavcodec/dovi_rpuenc.c

  • tests/fate/hevc : add a test for selecting view by position

    13 septembre 2024, par Anton Khirnov
    tests/fate/hevc : add a test for selecting view by position

    Using a real-world iPhone-recorded file.
    • [DH] tests/fate/hevc.mak
    • [DH] tests/ref/fate/hevc-mv-position

Navigation